Beyond Bypass

Two dairy cows standing in field on a sunny day

Meeting the metabolizable needs of the high-producing cow is a ration-formulating challenge. There is a maximum limit on the amount of degradable protein that can be used by ruminal microbes to synthesize metabolizable protein for the cow.

Too much of the protein you feed your herd may be breaking down in the rumen, and you need to replace some degradable protein with some bypass protein. By limiting protein breakdown in the rumen and providing a desirable profile of amino acids in the bypass portion, you may be able to lower total crude protein in the ration and thereby reduce total feed costs. With SoyPlus®, bypass proteins deliver the amino acids cows need to achieve a higher performance, saving money and increasing the efficiency of your herd.

Introduced to the dairy industry as a high quality bypass protein in 1984, SoyPlus quickly became recognized as the gold standard of dairy nutrition because of its quality and consistency.

Supported by dozens of scientific studies and upheld by stringent production and quality control measures, SoyPlus has earned a reputation for providing consistent, quality results, a reputation it still holds today.

SoyPlus is manufactured using an all-natural, mechanical expeller process.

SoyPlus Nutrition Spec Sheet

SoyPlus Benefits

Universities have trusted SoyPlus in more than 180 published trials over more than 30 years to provide a desirable amino acid profile, high intestinal digestibility and reliable RUP values. With more than 400 different monitoring points, SoyPlus proteins consistently achieve maximum rumen bypass and 93% intestinal digestibility, lot after lot and year after year.

Features & Benefits Sheet Features & Benefits Sheet, Spanish

In the manufacturing of plant-based bypass proteins, the increases in the rumen bypass characteristics can sometimes result in decreased intestinal digestibility of the bypass portion. The SoyPlus manufacturing process is designed to optimize the relationship between ruminal bypass and intestinal digestibility.

Years of university research and third-party laboratory testing verify that both the ruminal bypass and intestinal digestibility of the proteins in SoyPlus have been maximized.

SoyPlus is higher in energy than solvent extracted products. SoyPlus contains essential fatty acids which can replace some of the supplemental fat sources that may be added separately to the ration. With a fat percentage of roughly 6%, SoyPlus provides higher energy content than solvent-extracted products providing average fat of 1-2%.

Even the small portion of protein that is ruminally degradable still makes valuable contributions to the metabolizable protein supply to the animal.

The rumen degradable protein in SoyPlus exists as quickly-metabolized soluble protein and more slowly degraded proteins to provide a steady supply of nitrogen necessary for microbial growth. SoyPlus contains a good mix of sugars, starches, and highly digestible soluble fiber. Together, the degradable protein and energy sources drive rumen microbial growth and enhance rumen microbial digestion of the entire ration.

SoyPlus® has a pleasant roasted aroma. The higher fat content contributes flavor and dust control resulting in high dry matter intake and more milk production.

Cows love it!

Unlike solvent extracted soybean meal, some of which is made with hexane, SoyPlus is made without added chemicals. It is entirely plant derived.

Our soybeans are cracked, heated, and squeezed. This removes much of the oil while increasing the RUP content and preserving the integrity of the raw ingredient.

Your decision on which protein products will best supply the metabolizable protein and essential amino acids your cows need while supplying energy and supporting microbial protein production should be based on a review of controlled research data. SoyPlus has been extensively researched at major universities throughout the USA. Using SoyPlus to balance degradable and undegradable protein ratios and supply limiting amino acids allows for lower total protein diets to reduce feed costs while maintaining or improving milk production and components.

Consistency in feed ingredients matters, and the rigorous testing applied to SoyPlus ensures that what we claim our product to be is what you actually get. SoyPlus is routinely subjected to not just one, but two protein analytical procedures. The RUP content is verified via ongoing in situ testing as well as being subjected to additional evaluation using the “Ross” in vitro method. The SoyPlus manufacturing process is ISO and HACCP certified.

Research & Trial Results

SoyPlus® positively benefits dairy farmers around the globe by offering a positive return on investment for milk production as a high quality protein source. As a dairy bypass feed ingredient, SoyPlus delivers a research-proven 60% bypass protein with an excellent profile of available amino acids, including lysine and methionine, key in milk production. Used in more than 180 published university trials, SoyPlus is the established industry constant.

What is Protein Bypass?

Bypass protein, or ruminally undegradable protein (RUP), is defined as that portion of dietary protein that escapes degradation by ruminal microorganisms. 

Bypass protein from feed, along with microbial protein synthesized in the rumen, is passed into the small intestine for digestion and absorption. Bypass protein helps support production that exceeds levels that can be supported by microbial protein alone.

The purpose of feeding bypass protein is to supply amino acids that may be absent or lowered in a cow's current diet. The addition of these amino acids can lead to increased milk production. Soybean-based bypass proteins are considered very high quality protein because of their amino acid profile.

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Response profiles of enteric methane emissions and lactational performance during habituation to dietary coconut oil in dairy cows

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Mary Beth Hall
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Enteric methane emissions and lactational performance of Holstein cows fed different concentrations of coconut oil

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K.L. Kammes, M.S. Allen
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M.S. Allen, Y. Ying
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Nutrient demand interacts with forage family to affect digestion responses in dairy cows

K.L. Kammes, M.S. Allen
journalOfDairyScience, Journal of Dairy Science Vol. 95, Issue 6, p3269–3287
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Rates of particle size reduction and passage are faster for legume compared with cool-season grass, resulting in lower rumen fill and less effective fiber

K.L. Kammes, M.S. Allen
journalOfDairyScience, Journal of Dairy Science Vol. 95, Issue 6, p3288–3297
Published: January 1, 2012

Nutrient demand interacts with legume particle length to affect digestion responses and rumen pool sizes in dairy cows

K.L. Kammes, Y. Ying, M.S. Allen
journalOfDairyScience, Journal of Dairy Science Vol. 95, Issue 5, p2616–2631
Published: January 1, 2012

Effect of cooling heat-stressed dairy cows during the dry period on insulin response

S. Tao, I.M. Thompson, A.P.A. Monteiro, M.J. Hayen, L.J. Young, G.E. Dahl
journalOfDairyScience, Journal of Dairy Science Vol. 95, Issue 9, p5035–5046
Published: January 1, 2012

Performance, metabolic, and endocrine responses of periparturient Holstein cows fed 3 sources of fat

C. Caldari-Torres, A.L. Lock, C.R. Staples, L. Badinga
journalOfDairyScience, Journal of Dairy Science Vol. 94, Issue 3, p1500–1510
Published: January 1, 2011

Heat stress abatement during the dry period influences metabolic gene expression and improves immune status in the transition period of dairy cows

B.C. do Amaral, E.E. Connor, S. Tao, M.J. Hayen, J.W. Bubolz, G.E. Dahl
journalOfDairyScience, Journal of Dairy Science Vol. 94, Issue 1, p86–96
Published: January 1, 2011

Effect of forage-to-concentrate ratio in dairy cow diets on emission of methane, carbon dioxide, and ammonia, lactation performance, and manure excretion

M.J. Aguerre, M.A. Wattiaux, J.M. Powell, G.A. Broderick, C. Arndt
journalOfDairyScience, Journal of Dairy Science Vol. 94, Issue 6, p3081–3093
Published: January 1, 2011

Effect of feeding different sources of rumen-protected methionine on milk production and N-utilization in lactating dairy cows

Z.H. Chen, G.A. Broderick, N.D. Luchini, B.K. Sloan, E. Devillard
journalOfDairyScience, Journal of Dairy Science Vol. 94, Issue 4, p1978–1988
Published: January 1, 2011

Effects of jugular-infused lysine, methionine, and branched-chain amino acids on milk protein synthesis in high-producing dairy cows

J.A.D.R.N. Appuhamy, J.R. Knapp, O. Becvar, J. Escobar, M.D. Hanigan
journalOfDairyScience, Journal of Dairy Science Vol. 94, Issue 4, p1952–1960
Published: January 1, 2011

Effect of fibrolytic enzyme application to low- and high-concentrate diets on the performance of lactating dairy cattle

K.G. Arriola, S.C. Kim, C.R. Staples, A.T. Adesogan
journalOfDairyScience, Journal of Dairy Science Vol. 94, Issue 2, p832–841
Published: January 1, 2011

Effects of differential supplementation of fatty acids during the peripartum and breeding periods of Holstein cows: I. Uterine and metabolic responses, reproduction, and lactation

F.T. Silvestre, T.S.M. Carvalho, N. Francisco, J.E.P. Santos, C.R. Staples, T.C. Jenkins, W.W. Thatcher
journalOfDairyScience, Journal of Dairy Science Vol. 94, Issue 1, p189–204
Published: January 1, 2011

Carbohydrate source and protein degradability alter lactation, ruminal, and blood measures

M.B. Hall, C.C. Larson, C.J. Wilcox
journalOfDairyScience, Journal of Dairy Science Vol. 93, Issue 1, p311–322
Published: January 1, 2010

Saccharomyces cerevisiae fermentation product in dairy cow diets containing dried distillers grains plus solubles

A.R. Hippen, D.J. Schingoethe, K.F. Kalscheur, P.L. Linke, D.R. Rennich, M.M. Abdelqader, I. Yoon
journalOfDairyScience, Journal of Dairy Science Vol. 93, Issue 6, p2661–2669
Published: January 1, 2010

Prepartum dietary management of energy intake affects postpartum intake and lactation performance by primiparous and multiparous Holstein cows

N.A. Janovick, J.K. Drackley
journalOfDairyScience, Journal of Dairy Science Vol. 93, Issue 7, p3086–3102
Published: January 1, 2010

Performance and amino acid utilization of early lactation dairy cows fed regular or reduced-fat dried distillers grains with solubles

K. Mjoun, K.F. Kalscheur, A.R. Hippen, D.J. Schingoethe, D.E. Little
journalOfDairyScience, Journal of Dairy Science Vol. 93, Issue 7, p3176–3191
Published: January 1, 2010

Replacement of starch from corn with nonforage fiber from distillers grains and soyhulls in diets of lactating dairy cows

S.D. Ranathunga, K.F. Kalscheur, A.R. Hippen, D.J. Schingoethe
journalOfDairyScience, Journal of Dairy Science Vol. 93, Issue 3, p1086–1097
Published: January 1, 2010

Lactation performance and amino acid utilization of cows fed increasing amounts of reduced-fat dried distillers grains with solubles

K. Mjoun, K.F. Kalscheur, A.R. Hippen, D.J. Schingoethe, D.E. Little
journalOfDairyScience, Journal of Dairy Science Vol. 93, Issue 1, p288–303
Published: January 1, 2010

Effect of dietary modifications of calcium and magnesium on reducing solubility of phosphorus in feces from lactating dairy cows

D. Herrera, W.G. Harris, V.D. Nair, M. Josan, C.R. Staples
journalOfDairyScience, Journal of Dairy Science Vol. 93, Issue 6, p2598–2611
Published: January 1, 2010

Heat-stress abatement during the dry period: Does cooling improve transition into lactation?

B.C. do Amaral, E.E. Connor, S. Tao, J. Hayen, J. Bubolz, G.E. Dahl
journalOfDairyScience, Journal of Dairy Science Vol. 92, Issue 12, p5988–5999
Published: January 1, 2009

Effects of anion supplementation to low-potassium prepartum diets on macromineral status and performance of periparturient dairy cows

J.M. Ramos-Nieves, B.J. Thering, M.R. Waldron, P.W. Jardon, T.R. Overton
journalOfDairyScience, Journal of Dairy Science Vol. 92, Issue 11, p5677–5691
Published: January 1, 2009

Evaluation of catfish oil as a feedstuff for lactating Holstein cows

A.K. Amorocho, T.C. Jenkins, C.R. Staples
journalOfDairyScience, Journal of Dairy Science Vol. 92, Issue 10, p5178–5188
Published: January 1, 2009

Comparison of reproductive performance in lactating dairy cows bred by natural service or timed artificial insemination

F.S. Lima, C.A. Risco, M.J. Thatcher, M.E. Benzaquen, L.F. Archbald, J.E.P. Santos, W.W. Thatcher
journalOfDairyScience, Journal of Dairy Science Vol. 92, Issue 11, p5456–5466
Published: January 1, 2009

Evaluation of rumen-protected methionine sources and period length on performance of lactating dairy cows within Latin squares

B.C. Benefield, R.A. Patton, M.J. Stevenson, T.R. Overton
journalOfDairyScience, Journal of Dairy Science Vol. 92, Issue 9, p4448–4455
Published: January 1, 2009

Effect of acarbose on milk yield and composition in early-lactation dairy cattle fed a ration to induce subacute ruminal acidosis

C.L. McLaughlin, A. Thompson, K. Greenwood, J. Sherington, C. Bruce
journalOfDairyScience, Journal of Dairy Science Vol. 92, Issue 9, p4481–4488
Published: January 1, 2009

Increasing dietary sugar concentration may improve dry matter intake, ruminal fermentation, and productivity of dairy cows in the postpartum phase of the transition period

G.B. Penner, M. Oba
journalOfDairyScience, Journal of Dairy Science Vol. 92, Issue 7, p3341–3353
Published: January 1, 2009

Effects of feeding Fermenten on ruminal fermentation in lactating Holstein cows fed two dietary sugar concentrations

G.B. Penner, L.L. Guan, M. Oba
journalOfDairyScience, Journal of Dairy Science Vol. 92, Issue 4, p1725–1733
Published: January 1, 2009

Nutrient demand interacts with forage family to affect nitrogen digestion and utilization responses in dairy cows

J.A. Voelker Linton, M.S. Allen
journalOfDairyScience, Journal of Dairy Science Vol. 92, Issue 4, p1594–1602
Published: January 1, 2009

Effect of a low-moisture buffer block on ruminal pH in lactating dairy cattle induced with subacute ruminal acidosis

K.M. Krause, D.V. Dhuyvetter, G.R. Oetzel
journalOfDairyScience, Journal of Dairy Science Vol. 92, Issue 1, p352–364
Published: January 1, 2009

Yeast culture supplementation prevented milk fat depression by a short-term dietary challenge with fermentable starch

R.A. Longuski, Y. Ying, M.S. Allen
journalOfDairyScience, Journal of Dairy Science Vol. 92, Issue 1, p160–167
Published: January 1, 2009

Timothy hays differing in dietary cation-anion difference affect the capability of dairy cows to maintain their calcium homeostasis

V.S. Heron, G.F. Tremblay, M. Oba
journalOfDairyScience, Journal of Dairy Science Vol. 92, Issue 1, p238–246
Published: January 1, 2009

Intestinal digestibility of amino acids in rumen-undegraded protein estimated using a precision-fed cecectomized rooster bioassay: II. Distillers dried grains with solubles and fish meal

S.E. Boucher, S. Calsamiglia, C.M. Parsons, H.H. Stein, M.D. Stern, P.S. Erickson, P.L. Utterback, C.G. Schwab
journalOfDairyScience, Journal of Dairy Science Vol. 92, Issue 12, p6056–6067
Published: January 1, 2009

Optimal dairy farm adjustments to increased utilization of corn distillers dried grains with solubles

T.M. Schmit, R.N. Boisvert, D. Enahoro, L.E. Chase
journalOfDairyScience, Journal of Dairy Science Vol. 92, Issue 12, p6105–6115
Published: January 1, 2009

Ruminal Phosphorus Disappearance from Corn and Soybean Feedstuffs

K. Mjoun, K.F. Kalscheur, A.R. Hippen, D.J. Schingoethe, D.E. Little
journalOfDairyScience, Journal of Dairy Science Vol. 91, Issue 10, p3938–3946
Published: October 1, 2008

Rumen Digestion and Nutritional Efficiency of Dairy Heifers Limit-Fed a High Forage Ration to Four Levels of Dry Matter Intake

G.I. Zanton, A.J. Heinrichs
journalOfDairyScience, Journal of Dairy Science Vol. 91, Issue 9, p3579–3588
Published: January 1, 2008

Effects of Feeding a Dietary Antioxidant in Diets with Oxidized Fat on Lactation Performance and Antioxidant Status of the Cow

M. Vázquez-Añón, J. Nocek, G. Bowman, T. Hampton, C. Atwell, P. Vázquez, T. Jenkins
journalOfDairyScience, Journal of Dairy Science Vol. 91, Issue 8, p3165–3172
Published: January 1, 2008

Prevotella bryantii 25A Used as a Probiotic in Early-Lactation Dairy Cows: Effect on Ruminal Fermentation Characteristics, Milk Production, and Milk Composition

J. Chiquette, M.J. Allison, M.A. Rasmussen
journalOfDairyScience, Journal of Dairy Science Vol. 91, Issue 9, p3536–3543
Published: January 1, 2008

Effects of Feeding Prepubertal Heifers a High-Energy Diet for Three, Six, or Twelve Weeks on Feed Intake, Body Growth, and Fat Deposition

L.E. Davis Rincker, M.S. Weber Nielsen, L.T. Chapin, J.S. Liesman, M.J. VandeHaar
journalOfDairyScience, Journal of Dairy Science Vol. 91, Issue 5, p1913–1925
Published: January 1, 2008

Nutrient Demand Interacts with Forage Family to Affect Intake and Digestion Responses in Dairy Cows

J.A. Voelker Linton, M.S. Allen
journalOfDairyScience, Journal of Dairy Science Vol. 91, Issue 7, p2694–2701
Published: January 1, 2008

Timothy Hay with a Low Dietary Cation-Anion Difference Improves Calcium Homeostasis in Periparturient Holstein Cows

G.B. Penner, G.F. Tremblay, T. Dow, M. Oba
journalOfDairyScience, Journal of Dairy Science Vol. 91, Issue 5, p1959–1968
Published: January 1, 2008

Milk Synthetic Response of the Bovine Mammary Gland to an Increase in the Local Concentration of Amino Acids and Acetate

N.G. Purdie, D.R. Trout, D.P. Poppi, J.P. Cant
journalOfDairyScience, Journal of Dairy Science Vol. 91, Issue 1, p218–228
Published: January 1, 2008

Phlorizin Induces Lipolysis and Alters Meal Patterns in Both Early-and Late-Lactation Dairy Cows

B.J. Bradford, M.S. Allen
journalOfDairyScience, Journal of Dairy Science Vol. 90, Issue 4, p1810–1815
Published: January 1, 2007

Effect of L-Carnitine Infusion and Feed Restriction on Carnitine Status in Lactating Holstein Cows

D.B. Carlson, J.C. Woodworth, J.K. Drackley
journalOfDairyScience, Journal of Dairy Science Vol. 90, Issue 5, p2367–2376
Published: January 1, 2007

Effect of Direct-Fed Microbials on Performance, Diet Digestibility, and Rumen Characteristics of Holstein Dairy Cows

M.L. Raeth-Knight, J.G. Linn, H.G. Jung
journalOfDairyScience, Journal of Dairy Science Vol. 90, Issue 4, p1802–1809
Published: January 1, 2007

Effects of Feeding Fish Meal and n-3 Fatty Acids on Milk Yield and Metabolic Responses in Early Lactating Dairy Cows

A.R. Heravi Moussavi, R.O. Gilbert, T.R. Overton, D.E. Bauman, W.R. Butler
journalOfDairyScience, Journal of Dairy Science Vol. 90, Issue 1, p136–144
Published: January 1, 2007

Effect of Glutamine Supplementation on Splanchnic Metabolism in Lactating Dairy Cows

L. Doepel, G.E. Lobley, J.F. Bernier, P. Dubreuil, H. Lapierre
journalOfDairyScience, Journal of Dairy Science Vol. 90, Issue 9, p4325–4333
Published: January 1, 2007

Ruminal and Intestinal Degradability of Distillers Grains plus Solubles Varies by Source

D.H. Kleinschmit, J.L. Anderson, D.J. Schingoethe, K.F. Kalscheur, A.R. Hippen
journalOfDairyScience, Journal of Dairy Science Vol. 90, Issue 6, p2909–2918
Published: January 1, 2007

Depression in Feed Intake by a Highly Fermentable Diet Is Related to Plasma Insulin Concentration and Insulin Response to Glucose Infusion

B.J. Bradford, M.S. Allen
journalOfDairyScience, Journal of Dairy Science Vol. 90, Issue 8, p3838–3845
Published: January 1, 2007

Nutrient Demand Affects Ruminal Digestion Responses to a Change in Dietary Forage Concentration

J.A. Voelker Linton, M.S. Allen
journalOfDairyScience, Journal of Dairy Science Vol. 90, Issue 10, p4770–4779
Published: January 1, 2007

Short Communication: Rate of Propionate Infusion Within Meals Does Not Influence Feeding Behavior

B.J. Bradford, M.S. Allen
journalOfDairyScience, Journal of Dairy Science Vol. 90, Issue 5, p2305–2308
Published: January 1, 2007

Dietary L-Carnitine Affects Periparturient Nutrient Metabolism and Lactation in Multiparous Cows

D.B. Carlson, J.W. McFadden, A. D’Angelo, J.C. Woodworth, J.K. Drackley
journalOfDairyScience, Journal of Dairy Science Vol. 90, Issue 7, p3422–3441
Published: January 1, 2007

Slow-Release Urea and Highly Fermentable Sugars in Diets Fed to Lactating Dairy Cows

G.L. Golombeski, K.F. Kalscheur, A.R. Hippen, D.J. Schingoethe
journalOfDairyScience, Journal of Dairy Science Vol. 89, Issue 11, p4395–4403
Published: January 1, 2006

Metabolic Effects of Abomasal L-Carnitine Infusion and Feed Restriction in Lactating Holstein Cows

D.B. Carlson, N.B. Litherland, H.M. Dann, J.C. Woodworth, J.K. Drackley
journalOfDairyScience, Journal of Dairy Science Vol. 89, Issue 12, p4819–4834
Published: January 1, 2006

The Effect of Trace Mineral Fortification Level and Source on Performance of Dairy Cattle

J.E. Nocek, M.T. Socha, D.J. Tomlinson
journalOfDairyScience, Journal of Dairy Science Vol. 89, Issue 7, p2679–2693
Published: January 1, 2006

Pregnancy, Bovine Somatotropin, and Dietary n-3 Fatty Acids in Lactating Dairy Cows: I. Ovarian, Conceptus, and Growth Hormone–Insulin-Like Growth Factor System Responses

T.R. Bilby, A. Sozzi, M.M. Lopez, F.T. Silvestre, A.D. Ealy, C.R. Staples, W.W. Thatcher
journalOfDairyScience, Journal of Dairy Science Vol. 89, Issue 9, p3360–3374
Published: January 1, 2006

Feeding Lactose to Increase Ruminal Butyrate and the Metabolic Status of Transition Dairy Cows

J.M. DeFrain, A.R. Hippen, K.F. Kalscheur, D.J. Schingoethe
journalOfDairyScience, Journal of Dairy Science Vol. 89, Issue 1, p267–276
Published: January 1, 2006

Effects of Dietary Unsaturated Fatty Acids on Oocyte Quality and Follicular Development in Lactating Dairy Cows in Summer

T.R. Bilby, J. Block, B.C. do Amaral, O. Sa Filho, F.T. Silvestre, P.J. Hansen, C.R. Staples, W.W. Thatcher
journalOfDairyScience, Journal of Dairy Science Vol. 89, Issue 10, p3891–3903
Published: January 1, 2006

Lipid Metabolite Profiles and Milk Production for Holstein and Jersey Cows Fed Rumen-Protected Choline During the Periparturient Period

N.A. Janovick Guretzky, D.B. Carlson, J.E. Garrett, J.K. Drackley
journalOfDairyScience, Journal of Dairy Science Vol. 89, Issue 1, p188–200
Published: January 1, 2006

Diets During Far-Off and Close-Up Dry Periods Affect Periparturient Metabolism and Lactation in Multiparous Cows

H.M. Dann, N.B. Litherland, J.P. Underwood, M. Bionaz, A. D’Angelo, J.W. McFadden, J.K. Drackley
journalOfDairyScience, Journal of Dairy Science Vol. 89, Issue 9, p3563–3577
Published: January 1, 2006

Effect of Postruminal Glutamine Supplementation on Immune Response and Milk Production in Dairy Cows

L. Doepel, M. Lessard, N. Gagnon, G.E. Lobley, J.F. Bernier, P. Dubreuil, H. Lapierre
journalOfDairyScience, Journal of Dairy Science Vol. 89, Issue 8, p3107–3121
Published: January 1, 2006

Improving Intestinal Amino Acid Supply of Pre- and Postpartum Dairy Cows with Rumen-Protected Methionine and Lysine

M.T. Socha, D.E. Putnam, B.D. Garthwaite, N.L. Whitehouse, N.A. Kierstead, C.G. Schwab, G.A. Ducharme, J.C. Robert
journalOfDairyScience, Journal of Dairy Science Vol. 88, Issue 3, p1113–1126
Published: January 1, 2005

Effects of Dietary α-Amylase on Metabolism and Performance of Transition Dairy Cows

J.M. DeFrain, A.R. Hippen, K.F. Kalscheur, J.M. Tricarico
journalOfDairyScience, Journal of Dairy Science Vol. 88, Issue 12, p4405–4413
Published: January 1, 2005

Effects of Feeding Propionate and Calcium Salts of Long-Chain Fatty Acids on Transition Dairy Cow Performance

J.M. DeFrain, A.R. Hippen, K.F. Kalscheur, R.S. Patton
journalOfDairyScience, Journal of Dairy Science Vol. 88, Issue 3, p983–993
Published: January 1, 2005

Effects of Photoperiod During the Dry Period on Prolactin, Prolactin Receptor, and Milk Production of Dairy Cows

T.L. Auchtung, A.G. Rius, P.E. Kendall, T.B. McFadden, G.E. Dahl
journalOfDairyScience, Journal of Dairy Science Vol. 88, Issue 1, p121–127
Published: January 1, 2005

Comparison of Conventional Linted Cottonseed and Mechanically Delinted Cottonseed in Diets for Dairy Cows

V.R. Moreira, L.D. Satter, B. Harding
journalOfDairyScience, Journal of Dairy Science Vol. 87, Issue 1, p131–138
Published: January 1, 2004

The Effect of Steam Flaked or Dry Ground Corn and Supplemental Phytic Acid on Nitrogen Partitioning in Lactating Cows and Ammonia Emission from Manure

K.M. Burkholder, A.D. Guyton, J.M. McKinney, K.F. Knowlton
journalOfDairyScience, Journal of Dairy Science Vol. 87, Issue 8, p2546–2553
Published: January 1, 2004

Feeding Glycerol to Transition Dairy Cows: Effects on Blood Metabolites and Lactation Performance

J.M. DeFrain, A.R. Hippen, K.F. Kalscheur, P.W. Jardon
journalOfDairyScience, Journal of Dairy Science Vol. 87, Issue 12, p4195–4206
Published: January 1, 2004

Milk Fat Responses to a Change in Diet Fermentability Vary by Production Level in Dairy Cattle

B.J. Bradford, M.S. Allen
journalOfDairyScience, Journal of Dairy Science Vol. 87, Issue 11, p3800–3807
Published: January 1, 2004

Lactation Performance of Holstein Cows Fed Fescue, Orchardgrass, or Alfalfa Silage

D.J.R. Cherney, J.H. Cherney, L.E. Chase
journalOfDairyScience, Journal of Dairy Science Vol. 87, Issue 7, p2268–2276
Published: January 1, 2004

Feeding 2-Hydroxy-4-(Methylthio)-Butanoic Acid to Periparturient Dairy Cows Improves Milk Production but not Hepatic Metabolism

M.S. Piepenbrink, A.L. Marr, M.R. Waldron, W.R. Butler, T.R. Overton, M. Vázquez-Añón, M.D. Holt
journalOfDairyScience, Journal of Dairy Science Vol. 87, Issue 4, p1071–1084
Published: January 1, 2004

Effect of Feeding Whole, Unprocessed Sunflower Seeds and Flaxseed on Milk Production, Milk Composition, and Prostaglandin Secretion in Dairy Cows

H.V. Petit, C. Germiquet, D. Lebel
journalOfDairyScience, Journal of Dairy Science Vol. 87, Issue 11, p3889–3898
Published: January 1, 2004

Effect of Inhibitor Concentration and End-Product Accumulation on Estimates of Ruminal in Vitro Protein Degradation

Glen A. Broderick, Michael L. Murphy, Peter Udén
journalOfDairyScience, Journal of Dairy Science Vol. 87, Issue 5, p1360–1371
Published: January 1, 2004

Growth Hormone (GH) Binding and Expression of GH Receptor 1A mRNA in Hepatic Tissue of Periparturient Dairy Cows

R.P. Radcliff, B.L. McCormack, B.A. Crooker, M.C. Lucy
journalOfDairyScience, Journal of Dairy Science Vol. 86, Issue 12, p3933–3940
Published: January 1, 2003

Effects of Supplemental Energy on Metabolic and Immune Measurements in Periparturient Dairy Cows with Johne's Disease

J.R. Stabel, J.P. Goff, K. Kimura
journalOfDairyScience, Journal of Dairy Science Vol. 86, Issue 11, p3527–3535
Published: January 1, 2003

Effect of Two Levels of Crude Protein and Methionine Supplementation on Performance of Dairy Cows

C. Leonardi, M. Stevenson, L.E. Armentano
journalOfDairyScience, Journal of Dairy Science Vol. 86, Issue 12, p4033–4042
Published: January 1, 2003

Production Response of Lactating Cows Fed Dried Versus Wet Brewers’ Grain in Diets with Similar Dry Matter Content

T.R. Dhiman, H.R. Bingham, H.D. Radloff
journalOfDairyScience, Journal of Dairy Science Vol. 86, Issue 9, p2914–2921
Published: January 1, 2003

Effects of a Polymer-Coated Urea Product on Nitrogen Metabolism in Lactating Holstein Dairy Cattle

E. Galo, S.M. Emanuele, C.J. Sniffen, J.H. White, J.R. Knapp
journalOfDairyScience, Journal of Dairy Science Vol. 86, Issue 6, p2154–2162
Published: January 1, 2003

The Effect of Steam-Flaked or Dry Ground Corn and Supplemental Phytic Acid on Phosphorus Partitioning and Ruminal Phytase Activity in Lactating Cows

A.D. Guyton, J.M. McKinney, K.F. Knowlton
journalOfDairyScience, Journal of Dairy Science Vol. 86, Issue 12, p3972–3982
Published: January 1, 2003

Physical and Processing Properties of Milk, Butter, and Cheddar Cheese from Cows Fed Supplemental Fish Meal

C.A. Avramis, H. Wang, B.W. McBride, T.C. Wright, A.R. Hill
journalOfDairyScience, Journal of Dairy Science Vol. 86, Issue 8, p2568–2576
Published: January 1, 2003

Altering Soluble and Potentially Rumen Degradable Protein for Prepubertal Holstein Heifers

M.T. Gabler, A.J. Heinrichs
journalOfDairyScience, Journal of Dairy Science Vol. 86, Issue 6, p2122–2130
Published: January 1, 2003

Lactation Performance by Dairy Cows Fed Supplemental Biotin and a B-Vitamin Blend

D.N. Majee, E.C. Schwab, S.J. Bertics, W.M. Seymour, R.D. Shaver
journalOfDairyScience, Journal of Dairy Science Vol. 86, Issue 6, p2106–2112
Published: January 1, 2003

Effect of Feeding Supplemental Fibrolytic Enzymes or Soluble Sugars with Malic Acid on Milk Production

J.L. Vicini, H.G. Bateman, M.K. Bhat, J.H. Clark, R.A. Erdman, R.H. Phipps, M.E. Van Amburgh, G.F. Hartnell, and others
journalOfDairyScience, Journal of Dairy Science Vol. 86, Issue 2, p576–585
Published: January 1, 2003

Reduced Fatty Acid Synthesis and Desaturation Due to Exogenous trans10, cis12-CLA in Cows Fed Oleic or Linoleic Oil

J.J. Loor, J.H. Herbein
journalOfDairyScience, Journal of Dairy Science Vol. 86, Issue 4, p1354–1369
Published: January 1, 2003

Influence of Dietary Nonfiber Carbohydrate Concentration and Supplementation of Sucrose on Lactation Performance of Cows Fed Fescue Silage

D.J.R. Cherney, J.H. Cherney, L.E. Chase
journalOfDairyScience, Journal of Dairy Science Vol. 86, Issue 12, p3983–3991
Published: January 1, 2003

Efficacy of Carbohydrate Sources for Milk Production by Cows Fed Diets Based on Alfalfa Silage

G.A. Broderick, D.R. Mertens, R. Simons
journalOfDairyScience, Journal of Dairy Science Vol. 85, Issue 7, p1767–1776
Published: July 1, 2002

Analysis of Variation in cis-9, trans-11 Conjugated Linoleic Acid (CLA) in Milk Fat of Dairy Cows

D.G. Peterson, J.A. Kelsey, D.E. Bauman
journalOfDairyScience, Journal of Dairy Science Vol. 85, Issue 9, p2164–2172
Published: January 1, 2002

Phosphorus Partitioning During Early Lactation in Dairy Cows Fed Diets Varying in Phosphorus Content

K.F. Knowlton, J.H. Herbein
journalOfDairyScience, Journal of Dairy Science Vol. 85, Issue 5, p1227–1236
Published: January 1, 2002

Effect of Protein Level in Prepartum Diets on Metabolism and Performance of Dairy Cows

A.F. Park, J.E. Shirley, E.C. Titgemeyer, M.J. Meyer, M.J. VanBaale, M.J. VandeHaar
journalOfDairyScience, Journal of Dairy Science Vol. 85, Issue 7, p1815–1828
Published: January 1, 2002

Effect of Dietary Forage Concentration and Buffer Addition on Duodenal Flow of Trans-C18:1 Fatty Acids and Milk Fat Production in Dairy Cows

K.F. Kalscheur, B.B. Teter, L.S. Piperova, R.A. Erdman
journalOfDairyScience, Journal of Dairy Science Vol. 80, Issue 9, p2104–2114
Published: January 1, 1997

Altered rumen fermentation patterns in lactating dairy cows supplemented with phytochemicals improve milk production and effeciency

R. C. B. Grazziontin, J. Halfen, F. Rosa, E. Schmitt, J. L. Anderson, V. Ballard, and J. S. Osorio.
animalFeedScienceAndTechnology, Volume 103:310-312

Lowering rumen degradable protein maintained energy-corrected milk yield and improved nitrogen-use efficiency in multiparous lactating dairy cows exposes to heat stress

J. D. Kaufman, K. R. Kassube and A. G. Ríus
journalOfDairyScience, Journal of Dairy Science Vol. 100, Issue 10, p8132–8145
Published: July 26, 2017

Effects of rumen protected methionine, lysine and histidine on lactation performance of dairy cows

F. Giallongo, M. T. Harper, J. Oh, J. C. Lopes, H. Lapierre, R. A. Patton, C. Parys, I Shinzato, and A. N. Hristov
journalOfDairyScience, Journal of Dairy Science Vol. 99, Issue 6, p4437–4452
Published: April 4, 2016

Effects of slow release urea and rumen-protected methionine and histidine on performance of dairy cows

F. Giallongo, A. N. Hristov, J. Oh, T. Frederick, H. Weeks, H. Lapierre, R. A. Patton, A. Gehman, and C. Parys
journalOfDairyScience, Journal of Dairy Science Vol. 98, Issue 5, p3292–3308
Published: February 25, 2015

Ruminal degradation and intestinal digestibility of protein and amino acids in high-protein feedstuffs commonly used in dairy diets

H.A. Paz, T.J. Klopfenstein, D. Hostetler, S.C. Fernando, E. Castillo-Lopez and P.J. Kononoff
journalOfDairyScience, Journal of Dairy Science Vol. 97, Issue 10, p6485–6498
Published: June 23, 2014

Effect of replacing soybean meal protein with protein from upland cottonseed, Pima cottonseed, or extruded Pima cottonseed on production of lactating dairy cows

G.A. Broderick, T.M. Kerkman, H.M. Sullivan, M.K. Dowd, P.A. Funk
journalOfDairyScience, Journal of Dairy Science Vol. 96, Issue 4, p2374–2386
Published: February 1, 2013

Rumen-protected lysine, methionine, and histidine increase milk protein yield in dairy cows fed a metabolizable protein-deficient diet

C. Lee, A.N. Hristov, T.W. Cassidy, K.S. Heyler, H. Lapierre, G.A. Varga, M.J. de Veth, R.A. Patton, and others
journalOfDairyScience, Journal of Dairy Science Vol. 95, Issue 10, p6042–6056
Published: August 6, 2012

Effect of rumen-undegradable protein supplementation and fresh forage composition on nitrogen utilization of dairy ewes

C. Mikolayunas, D.L. Thomas, L.E. Armentano, Y.M. Berger
journalOfDairyScience, Journal of Dairy Science Vol. 94, Issue 1, p416–425
Published: January 1, 2011

Intestinal digestibility of amino acids in rumen undegradable protein estimated using a precision-fed cecectomized rooster bioassay: I. Soybean meal and SoyPlus

S.E. Boucher, S. Calsamiglia, C.M. Parsons, H.H. Stein, M.D. Stern, P.S. Erickson, P.L. Utterback, C.G. Schwab
journalOfDairyScience, Journal of Dairy Science Vol. 92, Issue 9, p4489–4498
Published: September 1, 2009

Effect of protein degradability on milk production of dairy ewes

C. Mikolayunas-Sandrock, L.E. Armentano, D.L. Thomas, Y.M. Berger
journalOfDairyScience, Journal of Dairy Science Vol. 92, Issue 9, p4507–4513
Published: September 1, 2009

Evaluation of the furosine and homoarginine methods for determining reactive lysine in rumen-undegraded protein

S.E. Boucher, C. Pedersen, H.H. Stein, C.G. Schwab
journalOfDairyScience, Journal of Dairy Science Vol. 92, Issue 8, p3951–3958
Published: August 1, 2009

In vitro digestibility of individual amino acids in rumen-undegraded protein: The modified three-step procedure and the immobilized digestive enzyme assay

S.E. Boucher, S. Calsamiglia, C.M. Parsons, M.D. Stern, M. Ruiz Moreno, M. Vázquez-Añón, C.G. Schwab
journalOfDairyScience, Journal of Dairy Science Vol. 92, Issue 8, p3939–3950
Published: August 1, 2009

Effect of dietary protein concentration and degradability on response to rumen-protected methionine in lactating dairy cows

G.A. Broderick, M.J. Stevenson, R.A. Patton
journalOfDairyScience, Journal of Dairy Science Vol. 92, Issue 6, p2719–2728
Published: June 1, 2009

Ruminal Phosphorus Disappearance from Corn and Soybean Feedstuffs

K. Mjoun, K.F. Kalscheur, A.R. Hippen, D.J. Schingoethe, D.E. Little
journalOfDairyScience, Journal of Dairy Science Vol. 91, Issue 10, p3938–3946
Published: October 1, 2008

The Relative Merit of Ruminal Undegradable Protein from Soybean Meal or Soluble Fiber from Beet Pulp to Improve Nitrogen Utilization in Dairy Cows

S.I. Borucki Castro, L.E. Phillip, H. Lapierre, P.W. Jardon, R. Berthiaume
journalOfDairyScience, Journal of Dairy Science Vol. 91, Issue 10, p3947–3957
Published: October 1, 2008

Ruminal Degradability and Intestinal Digestibility of Protein and Amino Acids in Treated Soybean Meal Products

S.I. Borucki Castro, L.E. Phillip, H. Lapierre, P.W. Jardon, R. Berthiaume
journalOfDairyScience, Journal of Dairy Science Vol. 90, Issue 2, p810–822
Published: February 1, 2007

Effect of Amount and Ruminal Degradability of Soybean Meal Protein on Performance of Lactating Dairy Cows

J.J. Olmos Colmenero, G.A. Broderick
journalOfDairyScience, Journal of Dairy Science Vol. 89, Issue 5, p1635–1643
Published: May 1, 2006

Rumen Fermentation and Intestinal Supply of Nutrients in Dairy Cows Fed Rumen-Protected Soy Products

I.R. Ipharraguerre, J.H. Clark, D.E. Freeman
journalOfDairyScience, Journal of Dairy Science Vol. 88, Issue 8, p2879–2892
Published: August 1, 2005

Effects of Parity and Supply of Rumen-Degraded and Undegraded Protein on Production and Nitrogen Balance in Holsteins

S.A. Flis, M.A. Wattiaux
journalOfDairyScience, Journal of Dairy Science Vol. 88, Issue 6, p2096–2106
Published: June 1, 2005

Impacts of the Source and Amount of Crude Protein on the Intestinal Supply of Nitrogen Fractions and Performance of Dairy Cows

I.R. Ipharraguerre, J.H. Clark
journalOfDairyScience, Journal of Dairy Science Vol. 88, E Supplemental, Pages E22-E37
Published: April 1, 2005

Sources of Variation in Rates of in Vitro Ruminal Protein Degradation

G.A. Broderick, P. Udén, M.L. Murphy, A. Lapins
journalOfDairyScience, Journal of Dairy Science Vol. 87, Issue 5, p1345–1359
Published: May 1, 2004

Effect of Feeding Protein Supplements of Differing Degradability on Omasal Flow of Microbial and Undegraded Protein

S.M. Reynal, G.A. Broderick, S. Ahvenjärvi, P. Huhtanen
journalOfDairyScience, Journal of Dairy Science Vol. 86, Issue 4, p1292–1305
Published: April 1, 2003

Effects of Feeding Dairy Cows Protein Supplements of Varying Ruminal Degradability

S.M. Reynal, G.A. Broderick, S. Ahvenjärvi, P. Huhtanen
journalOfDairyScience, Journal of Dairy Science Vol. 86, Issue 3, p835–843
Published: March 1, 2003

Efficacy of Carbohydrate Sources for Milk Production by Cows Fed Diets Based on Alfalfa Silage

G.A. Broderick, D.R. Mertens, R. Simons
journalOfDairyScience, Journal of Dairy Science Vol. 85, Issue 7, p1767–1776
Published: July 1, 2002

Trans18:1 and 18:2 Isomers in Blood Plasma and Milk Fat of Grazing Cows Fed a Grain Supplement Containing Solvent-Extracted or Mechanically Extracted Soybean Meal

J.J. Loor, J.H. Herbein, C.E. Polan
journalOfDairyScience, Journal of Dairy Science Vol. 85, Issue 5, p1197–1207
Published: May 1, 2002

Effect of Protein Source and Soluble Carbohydrate Addition on Rumen Fermentation and Lactation Performance of Holstein Cows

M.E. McCormick, D.D. Redfearn, J.D. Ward, D.C. Blouin
journalOfDairyScience, Journal of Dairy Science Vol. 84, Issue 7, p1686–1697
Published: July 1, 2001

Milk Production During the Complete Lactation of Dairy Cows Fed Diets Containing Different Amounts of Protein

Z. Wu, L.D. Satter
journalOfDairyScience, Journal of Dairy Science Vol. 83, Issue 5, p1042–1051
Published: May 1, 2000

Effect of Processing High Moisture Ear Corn on Ruminal Fermentation and Milk Yield

Cansu Ekinci, Glen A. Broderick
journalOfDairyScience, Journal of Dairy Science Vol. 80, Issue 12, p3298–3307
Published: December 1, 1997

Lactational Evaluation of Protein Supplements of Varying Ruminal Degradabilities

Judy Ellison Henson, David J. Schingoethe, Harouna A. Maiga
journalOfDairyScience, Journal of Dairy Science Vol. 80, Issue 2, p385–392
Published: February 1, 1997

Effect of Yeast Culture in the Diets of Early Lactation Dairy Cows on Ruminal Fermentation and Passage of Nitrogen Fractions and Amino Acids to the Small Intestine

D.E. Putnam, C.G. Schwab, M.T. Socha, N.L. Whitehouse, N.A. Kierstead, B.D. Garthwaite
journalOfDairyScience, Journal of Dairy Science Vol. 80, Issue 2, p374–384
Published: February 1, 1997

Ruminal Degradation, Amino Acid Composition, and Intestinal Digestibility of the Residual Components of Five Protein Supplements

Harouna A. Maiga, David J. Schingoethe, Judy Ellison Henson
journalOfDairyScience, Journal of Dairy Science Vol. 79, Issue 9, p1647–1653
Published: September 1, 1996

Effect of Postweaning Age on Rate of In Situ Protein Disappearance in Calves Weaned at 5 Weeks of Age

M. Vazquez-Anon, A.J. Heinrichs, J.M. Aldrich, G.A. Varga
journalOfDairyScience, Journal of Dairy Science Vol. 76, Issue 9, p2749–2757
Published: September 1, 1993

Protein Versus Energy Supplementation of High Alfalfa Silage Diets for Early Lactation Cows

C. Cadorniga, L.D. Satter
journalOfDairyScience, Journal of Dairy Science Vol. 76, Issue 7, p1972–1977
Published: July 1, 1993

Effect of Fish Meal and Expeller-Processed Soybean Meal Fed to Dairy Cows Receiving Bovine Somatotropin (Sometribove)

S. Calsamiglia, D.D. Hongerholt, B.A. Crooker, M.D. Stern, G.F. Hartnell, R.L. Hintz
journalOfDairyScience, Journal of Dairy Science Vol. 75, Issue 9, p2454–2462
Published: September 1, 1992

Feeding Supplemental Fat and Undegraded Intake Protein to Early Lactation Dairy Cows

P.C. Hoffman, R.R. Grummer, R.D. Shaver, G.A. Broderick, T.R. Drendel
journalOfDairyScience, Journal of Dairy Science Vol. 74, Issue 10, p3468–3474
Published: October 1, 1991

Comparison of In Vitro Techniques to the In Situ Technique for Estimation of Ruminal Degradation of Protein

M.B. Roe, L.E. Chase, C.J. Sniffen
journalOfDairyScience, Journal of Dairy Science Vol. 74, Issue 5, p1632–1640
Published: May 1, 1991

Expeller Soybean Meal and Corn By-Products Versus Solvent Soybean Meal for Lactating Dairy Cows Fed Alfalfa Silage as Sole Forage

Glen A. Broderick, D. Bradford Ricker, L. Spence Driver
journalOfDairyScience, Journal of Dairy Science Vol. 73, Issue 2, p453–462
Published: February 1, 1990

Relative Value of Solvent and Expeller Soybean Meal for Lactating Dairy Cows

Glen A. Broderick
journalOfDairyScience, Journal of Dairy Science Vol. 69, Issue 11, p2948–2958
Published: November 1, 1986

Certifications

ISO 9001

The SoyPlus manufacturing process is ISO 9001 certified. ISO 9001 is an internationally recognized quality management standard. With its ISO 9001 certification, Landus Cooperative has proven that it follows and meets the requirements of the standard.

HACCP (Hazard Analysis Critical Control Points)

HACCP certification ensures that the process is evaluated for biological, chemical, and physical hazards. This evaluation includes procurement, raw material receiving, production, storage, and shipment of product. If there are areas in the process where biological, chemical, or physical hazards could enter or exist, actions are taken to reduce or eliminate these risks. This provides greater confidence that our feed is safe.

Quality & Consistency

Every batch of SoyPlus we produce follows the same production process which includes ingredient checks, process monitoring, in house production testing and external laboratory testing. The consistency in the SoyPlus production processes guarantees our customers a quality product every time. With more than 400 different monitoring points, SoyPlus proteins consistently achieve maximum rumen bypass and 93% intestinal digestibility.

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