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Performance and carcass yield of broilers fed with different digestible amino acid profiles recommended by nutrients requirements tables

Author(s): Pedroso AC | Franco SG | Flemming JS | Borges SA | Sillus PP

Journal: Revista Brasileira de Ciência Avícola
ISSN 1516-635X

Volume: 5;
Issue: 1;
Start page: 29;
Date: 2003;
Original page

Keywords: broilers | carcass yield | digestible aminoacids | ideal protein

An experiment was conducted to evaluate the effect of different digestible amino acid profiles on the performance of broilers in two phases: from 1 to 21 days and from 22 to 42 days of age. At the end of the experiment, carcass yield and cut percentages were evaluated. Nine hundred and sixty AgRoss birds were distributed in a randomized block design with four treatments (four digestible amino acid profiles): Rostagno et al. (2000), Baker & Han (1994b), Degussa (1997) and those recommended by AgRoss (2000), with six repetitions and 40 birds per repetition (20 males and 20 females). The results showed that the four diets were able to provide the requirements of the birds, since no significant differences were seen among the treatments on the performance in the two phases and on the carcass yield and cuts at 42 days of age. Males had better yields of feet, head and neck, and lower percentage of abdominal fat (p
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