Níveis de lisina digestível para frangos de corte tipo caipira de 28 a 56 dias de idade

Rosa, Evellize Pereira MoraraKiefer, CharlesSouza, Karina Márcia Ribeiro deSilva, Jardel Barbosa daOzelame, Aline MarholdGomes, Eva Nara OliveiraRosa, Rafael Arantes

The objective of this study was to evaluate digestible lysine levels for free-range broiler hillbilly, from 28 to 56 days old. We used 720 naked neck chickens slow-growing Label Rouge strain males, distributed in a completely randomized design with six digestible lysine levels (0.800, 0.850, 0.900, 0.950, 1.000 and 1.050%), six replicates of 20 birds each. The lysine levels did not influence (P>0.05) broiler performance in accumulated periods 28-35 days, 28-42 days and 28-49 days. There was no effect (P>0.05) of treatments on feed intake and feed conversion in the total periods (28-56 days). Effect was observed (P0.05) for carcass and breast weights of abdominal fat, thigh + drumstick, back, wing and fat deposition between the levels of lysine.(AU)

1. rendimento de carcaça
2. naked neck
3. performance
4. exigência nutricional
5. carcass yield
6. desempenho
7. nutritional requirement
8. pescoço pelado
9. acids
10. aminoácidos