Glycine supplementation to low protein, amino acid-supplemented diets supports optimal performance of broiler chicks

Poultry Science
D W DeanL L Southern

Abstract

Six experiments were conducted to determine the effects of low CP in diets for broilers and to evaluate limiting essential and nonessential amino acids (AA) in these diets. All experiments were conducted with Ross x Ross broilers in brooder batteries from 0 to 17 or 18 d posthatch. Treatments were replicated with 6 pens of either 5 or 6 broilers each. In Experiment (Exp.) 1, corn-soybean meal diets were formulated to 16.18, 17.68, 19.18, 20.68, or 22.18% CP. The 22.18% CP diet provided 1.23% Lys and 0.89% TSAA, met or exceeded all nutrient requirements of young broilers, and served as the positive control (PC) diet in all experiments. Increasing dietary CP linearly increased final BW, daily gain (ADG), and gain:feed (G:F) (P < 0.005). In Exp. 2, additions of crystalline essential (EAA) or nonessential AA (NEAA) were added to the low CP diet to simulate the AA profile of the PC. Daily gain, final BW, and G:F were decreased (P < 0.01) when CP was reduced, but the addition of the NEAA increased final BW, ADG, and G:F (P < 0.07) to the level of broilers fed the PC. Addition of EAA alone was without effect. In Exp. 3, chicks fed diets with supplemental Glu, Ala, Asp, or Pro had reduced daily feed intake (ADFI), ADG, and final BW (P ...Continue Reading

Citations

Nov 15, 2008·Amino Acids·David H Baker
Nov 29, 2015·Journal of Animal Physiology and Animal Nutrition·R M BezerraD V G Vieira
Apr 24, 2013·Animal Science Journal = Nihon Chikusan Gakkaihō·Hiroyuki KobayashiMasaya Katsumata
Aug 31, 2016·Environmental Science and Pollution Research International·Mahmoud AlagawanyElwy A Ashour
Apr 2, 2008·The British Journal of Nutrition·Kazuaki TakahashiYukio Akiba
May 23, 2019·British Poultry Science·W Siegert, M Rodehutscord
May 4, 2017·Animal : an International Journal of Animal Bioscience·P BelloirS Tesseraud
Apr 26, 2020·Animals : an Open Access Journal From MDPI·Peter H SelleSonia Y Liu
Mar 9, 2021·Journal of Animal Science and Biotechnology·Sonia Yun LiuPeter H Selle
Mar 27, 2021·Poultry Science·Shemil P MacellineSonia Yun Liu
May 30, 2021·Animal : an International Journal of Animal Bioscience·J van Milgen
Aug 24, 2021·Journal of Animal Physiology and Animal Nutrition·Santi Devi UpadhayaIn Ho Kim

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