Abstract

The loss of meat and bone meal as a source of high quality protein for lactating cows creates an increased need for nonanimal sources. Fifty six Holstein cows were used to evaluate expeller soybean meal as a source of rumen undegradable intake (by-pass) protein for high producing cows. Expeller soybean meal tended to improve 3.5% contain fat-corrected milk yield and increased milk fat percentage relative to diets containing either solvent soybean meal or a meat and bone meal:blood meal mixture. In contrast, the protein percentage in milk was depressed significantly when cows were fed expeller soybean meal compared to animal protein. A limiting amino acid (possibly methionine) is implicated.; Dairy Day, 1997, Kansas State University, Manhattan, KS, 1997;

Keywords: Dairy Day, 1997, Kansas Agricultural Experiment Station contribution, no. 98-100-S, Report of progress (Kansas Agricultural Experiment Station and Cooperative Extension Service), 792, Dairy, Lactating cows, UIP, Expeller soybean meal

How to Cite:

Shirley, J. E., Piehl, D., Titgemeyer, E. C. & Scheffel, M. V., (1997) “Expeller soybean meal as a source of rumen undegradable protein for lactating dairy cows”, Kansas Agricultural Experiment Station Research Reports 1(2), 28-31. doi: https://doi.org/10.4148/2378-5977.3288