Effects of increasing total sulfur amino acid:lysine ratio on growth performance of 25 to 50 lb pigs (1998)

Authors

M De La Llata
P R. O'Quinn
J C. Woodworth
S A. Moser
Michael D. Tokach
Robert D. Goodband
Jim L. Nelssen
Steven S. Dritz

Keywords

Swine day, 1998; Kansas Agricultural Experiment Station contribution; no. 99-120-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 819; Swine; Methionine; Lysine; Nursery pigs

Abstract

Three hundred and fifty pigs were used in a 27-d growth study to determine the appropriate total sulfur amino acid:lysine ratio for 25 to 50 lb pigs. Pigs were blocked by weight (initially 22.5 lb) and allotted to one of 10 treatments arranged in a 2 x 5 factorial with two levels of total dietary lysine (.95 and 1.250/0) and five total sulfur amino acid ratios (.45, .50, .55, .60, and .65% of total lysine). Increasing total lysine from .95 to 1.25% increased ADG and improved FIG. Increasing the total sulfur amino acid:lysine ratio did not affect ADG but improved F/G. These results indicate that the optimal total sulfur amino acid:lysine ratio for the 25 to 50 lb pig is not greater than 55%.; Swine Day, Manhattan, KS, November 19, 1998

Recommended Citation

De La Llata, M; O'Quinn, P R.; Woodworth, J C.; Moser, S A.; Tokach, Michael D.; Goodband, Robert D.; Nelssen, Jim L.; and Dritz, Steven S. (1998) "Effects of increasing total sulfur amino acid:lysine ratio on growth performance of 25 to 50 lb pigs (1998)," Kansas Agricultural Experiment Station Research Reports: Vol. 0: Iss. 10. https://doi.org/10.4148/2378-5977.6593