Ken Greaney, ruminant technical services manager, Kemin Animal Nutrition and Health, Asia Pacific, Singapore
Typically, when it comes to providing a specific intestinally available amino acid, rumen- protected amino acids are more cost effective compared to commodity-based feedstuffs, in addition to allowing nutritionists greater flexibility in ration formulation.
S. Nitikanchana, M. D. Tokach, S. S. Dritz, J.L. Usry, J. M. DeRouchey, R. D. Goodband, J. R. Bergstrom, and J. L. Nelssen
A total of 96 pigs were used in 2 14-d studies to determine the effect of standardized ileal digestible (SID) tryptophan to large neutral amino acids (LNAA) ratio on growth performance of finishing pigs. Results suggest that the high level of LNAA relative to tryptophan in diets containing 30% DDGS or greater may not be responsible for the apparentincrease in the tryptophan requirement of finishing pigs seen in previous studies.