Determining the optimal threonine:lysine ratio in starter diets for the segregated early-weaned pig (1995)

Authors

J R. Bergstrom
K Q. Owen
B T. Richert
W B. Nessmith Jr
Jim L. Nelssen
Michael D. Tokach
Robert D. Goodband
Steven S. Dritz

Keywords

Swine day, 1995; Kansas Agricultural Experiment Station contribution; no. 96-140-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 746; Swine; Early-weaned pigs; Amino acids; Threonine

Abstract

A 35-day growth trial was conducted to determine the threonine: lysine ratio necessary to optimize growth performance of the segregated early-weaned (SEW) pig. Twelve experimental diets included two levels of lysine (1.15% and 1.5% digestible lysine) and six digestible threonine:lysine ratios (50, 55, 60, 65, 70, and 75%) in a 2 x 6 factorial arrangement. Growth performance was improved by feeding 1.5% digestible lysine, rather than 1. 15% digestible lysine. However, growth performance was not improved by increasing dietary threonine. These data indicate that the threonine requirement is no more than 50% of digestible lysine.; Swine Day, Manhattan, KS, November 16, 1995

Recommended Citation

Bergstrom, J R.; Owen, K Q.; Richert, B T.; Nessmith, W B. Jr; Nelssen, Jim L.; Tokach, Michael D.; Goodband, Robert D.; and Dritz, Steven S. (1995) "Determining the optimal threonine:lysine ratio in starter diets for the segregated early-weaned pig (1995)," Kansas Agricultural Experiment Station Research Reports: Vol. 0: Iss. 10. https://doi.org/10.4148/2378-5977.6475