Low Crude Protein, Amino Acid-Supplemented Diets, and the Glycine Requirement in Low Crude Protein Diets for Broilers
The purpose of this research was to determine the optimal level of crystalline amino acid (AA) supplementation that supports maximum growth performance in broilers, and to determine the Gly requirement in broilers. Treatments were replicated with a minimum of 7 pens with 6 broilers per pen. Experiments (Exp.) were conducted from 0- to 18- days (d) post-hatching in brooder batteries. Three Exp. were conducted to determine the maximum level of L-Lysâ¢HCl that could be supplemented to corn-soybean meal (C-SBM) diets without negatively affecting growth performance of broilers. The results of these Exp. indicate that broilers can achieve maximum growth performance when fed a C-SBM diet supplemented with 0.25% L-Lysâ¢HCl. Two Exp. were conducted to determine the fifth, sixth, and seventh limiting AA in a low crude protein (CP), C-SBM diet in broilers. The results of these Exp. indicate that Arg and Val may be equally limiting followed by Ile in a C-SBM diet supplemented with DL-Met, L-Lysâ¢HCl, L-Thr, and Gly. Three Exp. were conducted to determine the Gly requirement of broiler chicks fed a low CP, AA-supplemented diet. The results of this research indicate that 2.078% total Gly + Ser is required for broilers fed a C-SBM diet supplemented with 0.25% L-Lysâ¢HCl.
Advisor:Cathleen C. Williams; Thomas D. Bidner; L. Lee Southern
School:Louisiana State University in Shreveport
School Location:USA - Louisiana
Source Type:Master's Thesis
Keywords:animal science dairy poultry sciences
Date of Publication:11/15/2007