EFFECTS OF SOYBEAN HULLS AS ENERGY AND PROTEIN SOURCES IN DAIRY COW DIET ON PERFORMANCE OF LACTATING DAIRY COWS
Keywords:
Soybean hull, lactating dairy cow, milk production, and compositionAbstract
The effects of feeding soybean hulls as energy and protein sources in concentrate on the performance oflactating dairy cows were studied. Twenty four Holstein Friesian crossbred (>87.5% Holstein Friesian)lactating dairy cows, averaging 16.3 + 1.4 kg/d of milk, 84 + 15 days in milk, 42 + 5 mo old, and 415 +20 kg body weight, were blocked by milking days first and then by milk yield, body weight, and age into2 groups of 12 cows. Cows within each group were further randomly assigned to 3 treatments of 8 cowseach. The treatments were control (0% soybean hull (SH)), 10% SH and 20% SH in the concentrates.Performance parameters showed that DM intake, CP intake, NELP intake, milk yield, milk composition,and body weight change were similar in all treatments. However, milk fat and milk protein contentstended to linearly increase with increasing soybean hull in the concentrates while total solid contentwas significantly linearly increased by the addition of SH. Concentrations of ruminal ammonia nitrogen,volatile fatty acids, and pH were unaffected by the treatments. Milk fatty acid contents were alsosimilar in all treatments except for C18:2 and C18:3 that were significantly linearly increased by theaddition of SH. The present study suggested that SH can effectively replace high cost starchy groundcorn in the concentrates. Levels of SH addition in the concentrate should not be in excess of 20% andSH can replace ground corn up to 100% in the concentrate.
References
AAC (Australian Agricultural Council). (1990).Feeding Standards for AustralianLivestock: Ruminants. Standing Committeeon Agriculture, Ruminants Subcommittee.1st ed. CSIRO, Australian AgriculturalCouncil, Barton, ACT, Australia, 266p.
AOAC (Association of Official AnalyticalChemists). (1995). Official Methods ofAnalysis. 16th ed. Association of OfficialAnalytical Chemists, Arlington, VA,1,110p.
Bernard, J.K. and McNeill, W.W. (1991). Effectof high fiber energy supplements onnutrient digestibility and milk productionof lactating dairy cows. J. Dairy Sci.,74:991-995.
Blasi, D.A., Drouillard, J.S., Titgemeyer, E.C.,Paisley, S.I., and Brouk, M.J. (2000).Soybean hulls. Composition and feedingvalue for beef and dairy cattle. MF-2438.Kansas State Univ., Manhattan, KS.
Coomer, J.C., Amos, H.E., Williams, C.C., andWheeler, J.G. (1993). Responses of earlylactation cows to fat supplementationin diets with different nonstructuralcarbohydrate concentrations. J. Dairy Sci.,76:3,747-3,754.
Elliott, J.P., Drackley, J.K., Fahey, Jr., G.C., andShanks, R.D. (1995). Utilization ofsupplemental fat by dairy cows fed dietsvarying in content of nonstructuralcarbohydrates. J. Dairy Sci., 78:1,512-1,525.
Hara, A. and Radin, N.S. (1978). Lipid extractionof tissues with a low-toxicity solvent.Anal. Biochem., 90:420-426.
Ipharraguerre, I.R. and Clark, J.H. (2003).Soyhulls as an alternative feed forlactating dairy cows: a review. J. DairySci., 86:1,052-1,073.Ipharraguerre, I.R., Ipharraguerre, R.R., andClark, J.H. (2002). Performance oflactating dairy cows fed varying amountsof soy hulls as a replacement for corngrain. J. Dairy Sci., 85:2,905-2,912.
Mansfield, H.R. and Stern, M.D. (1994). Effectsof soybean hulls and lignosulfonatetreatedsoybean meal on ruminal fermen-tation in lactating dairy cows. J. Dairy Sci.,77:1,070-1,083.
Nocek, J.E. and Russell, J.B. (1988). Protein andenergy as an integrated system. Relationshipof ruminal protein and carbohydrateavailability to microbial synthesis and milkproduction. J. Dairy Sci., 71:2,070-2,107.
NRC (National Research Council). (2001).Nutrients Requirements of Dairy Cattle.7th ed. National Academy Press, WashingtonD.C., 340p.
Ostrowska, E., Dunshea, F.R., Muralitharan, M.,and Cross, R.F. (2000). Comparison ofsilver-ion high performance liquidchromatographic quantification of freeand methylated conjugated linoleic acid.Lipids., 35:1,147-1,153
Pantoja, J., Firkins, J.L., Eastridge, M.L., andHull, B.L. (1994). Effects of fat saturationand source of fiber on site of nutrientdigestion and milk production by lactatingdairy cows. J. Dairy Sci., 77:2,341-2,356.
SAS (Statistical Analysis System). (1988). SASUsers’ Guide: Statistics. Release 6.03th ed.NC: SAS Institute, 549p.Steel, R.G.D. and Torrie, J.H. (1980). Principlesand Procedures of Statistics: A BiometricalApproach. 2nd ed. McGraw-Hill, NewYork, NY, 631p.
Suksombat, W. and Junpanichjaroen, P. (2005).Feeding of sugar cane silage to dairy cattleduring the dry season. Asian-Aust. J. ofAnim. Sci., 18(8):1,125-1,129.
Suksombat, W. and Mernkratoke, P. (2005).Feeding of whole sugar cane to dairy cattleduring the dry season. Asian-Aust. J. ofAnim. Sci., 18(3):345-349.
Sutton, J.D. (1998). Altering milk compositionby feeding. J. Dairy Sci., 72:2,801-2,814.
Van Soest, P.J., Robertson, J.B., and Lewis,B.A. (1991). Methods for dietary fiber,neutral detergent fiber, and nonstarchpolysaccharides in relation to animalproduction. J. Dairy Sci., 74:3,583-3,597.
