Amino Acid Supplementation of Low-Protein Broiler Diets: 2. Formulation on an Ideal Amino Acid Basis

摘要: Abstract In order to apply the ideal amino acid concept broiler production, more knowledge is needed concerning low crude protein (CP), acid-supplemented diets. Three experiments were conducted evaluate performance, carcass traits, and nitrogen balance of broilers fed low-CP diets supplemented with acids according an ratio. Marginal reductions in CP both resulted equal body weight (BW) gain feed conversion compared birds control diet, regardless Thr supplementation. contrast, severe reduction a significant depression BW feed:gain. Although supplementation corrected Experiment 1, it did not restore 2. A small dietary had little effect on fat or lean yields, while further CP, without supplementation, demonstrated inconsistent responses. Breast meat yield was unaffected by Nitrogen excretion dramatically reduced 1.2 percentage units but unexpectedly when 2.7 units.