Determining the effects of standardized ileal digestible tryptophan:lysine ratio and tryptophan source in diets containing dried distillers grains with solubles on growth performance and carcass characteristics of finishing pigs (2012)

Authors

S Nitikanchana
J L. Usry
Michael D. Tokach
Robert D. Goodband
Joel M. DeRouchey
Jim L. Nelssen
Steven S. Dritz

Keywords

Kansas Agricultural Experiment Station contribution; no. 13-026-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 1074; Swine; Amino acids; DDGS; Finishing pig; Lysine; Tryptophan

Abstract

A total of 2,290 pigs (PIC 1050 × 337; initially 157 lb) were used to determine the effect of tryptophan source (L-tryptophan vs. soybean meal) and increasing SID tryptophan:lysine ratio in diets containing 30% dried distillers grains with solubles (DDGS) on finishing pig performance. Pens of pigs were balanced by initial weight and randomly allotted to 1 of 7 dietary treatments in a completely randomized design with 26 to 28 pigs per pen and 10 to 13 replications per treatment. Treatments were arranged as a 2 × 3 factorial with main effects of tryptophan source (L-tryptophan or soybean meal) and SID tryptophan:lysine ratio (18, 20, and 22% of lysine). The seventh treatment was a negative control diet formulated to a 16% SID tryptophan:lysine ratio.; Swine Day, Manhattan, KS, November 15, 2012

Recommended Citation

Nitikanchana, S; Usry, J L.; Tokach, Michael D.; Goodband, Robert D.; DeRouchey, Joel M.; Nelssen, Jim L.; and Dritz, Steven S. (2012) "Determining the effects of standardized ileal digestible tryptophan:lysine ratio and tryptophan source in diets containing dried distillers grains with solubles on growth performance and carcass characteristics of finishing pigs (2012)," Kansas Agricultural Experiment Station Research Reports: Vol. 0: Iss. 10. https://doi.org/10.4148/2378-5977.7090