Abstract

A 20-d growth assay was conducted to determine the appropriate true ileal digestible lysine requirement to maximize growth performance of pigs between 27 to 44 lb. The basal diet (1.0% true ileal digestible lysine; 20.1% CP) was corn-soybean meal-based and was formulated to contain 3% added fat. Sand was substituted with L-lysineâ‹…HCl to form the other treatment diets (1.1, 1.2, 1.3, and 1.4% true ileal digestible lysine). The positive control contained more soybean meal than the basal diet (44.2 vs. 32.2% of the diet) and no L-lysineâ‹…HCl to provide 1.3% true ileal digestible lysine. Growth performance improved (quadratic, P<0.04) with increasing true ileal digestible lysine and was maximized at 1.1% true ileal digestible lysine. Feed efficiency was better (quadratic, P<0.01) for pigs fed increasing true ileal digestible lysine and was best for pigs fed 1.3% true ileal digestible lysine. These results indicate that the true ileal digestible lysine requirement for the 27 to 44 lb pig is at least 1.1% for ADG and 1.3% for feed efficiency.; Swine Day, Manhattan, KS, November 14, 2002

Keywords: Swine day, 2002, Kansas Agricultural Experiment Station contribution, no. 03-120-S, Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service), 897, Lysine, Growth performance, Nursery pigs, Swine

How to Cite:

James, B. W., Hastad, C. W., Lawrence, K. R., Usry, J. L., Tokach, M. D., Goodband, R. D., Nelssen, J. L. & Dritz, S. S., (2002) “The optimal true ileal digestible lysine requirement for nursery pigs between 27 to 44 lb”, Kansas Agricultural Experiment Station Research Reports 1(10), 63-65. doi: https://doi.org/10.4148/2378-5977.6767