report

The optimal threonine:lysine ratio to maximize growth performance of nursery pigs

Authors

Abstract

A total of 210 pigs (initially 18.2 lb and 25 d of age) were used in a 21-d growth assay. The seven treatments consisted of a basal diet (14.1% CP) with increasing levels of threonine (45, 50, 55, 60, 65, and 70% of 1.07% apparent digestible lysine) and a negative control containing 0.97% lysine. Increasing dietary threonine improved feed efficiency; however, there was no improvement in growth performance between pigs fed 0.97 and 1.07% apparent digestible lysine. Therefore, these results suggest the requirement for apparent digestible threonine is approximately 60% of lysine for 18- to 40-lb pigs.; Swine Day, Manhattan, KS, November 15, 2001

Keywords: Swine day, 2001, Kansas Agricultural Experiment Station contribution, no. 02-132-S, Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service), 880, Swine, Threonine, Lysine, Nursery pigs

How to Cite: James, B. W. , Woodworth, J. C. , Goodband, R. D. , Tokach, M. D. , Nelssen, J. L. , DeRouchey, J. M. & Dritz, S. S. (2001) “The optimal threonine:lysine ratio to maximize growth performance of nursery pigs”, Kansas Agricultural Experiment Station Research Reports. 1(10). doi: https://doi.org/10.4148/2378-5977.6695