Plano nutricional com diferentes níveis de proteína bruta e energia metabolizável na ração para frangos de corte
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Data
2003
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Resumo
Two trials were conducted to evaluate four different nutritional plans with different energy (ME) and protein (CP)
levels, nominated PN1 (highest levels), PN2 (medium), PN3 (low) and PN4 (lowest) in starter, grower and finisher periods of broiler
raising. The performance, carcass and parts yield and economic analyses were evaluated in male (Trail 1) and female (Trail 2) broilers.
The experimental design consisted of 4 treatments and 4 replicates with 880 chickens, randomized into 16 floor pens (55 birds/pen).
When necessary, we used Tukey’s test to compared difference among means. The results showed that the increase of nutrients of diets
improved the performance of 1-39-day-old male broilers and 1-46-day-old females. The different nutritional plan did not affect the carcass
yield of male and female birds. Nevertheless, broilers fed with high protein and energy levels (PN1 and PN2) showed better breast yield.
No significant differences among treatments were observed for carcass and part yields. The greatest economic return in kg of weight male
broilers was obtained when low protein and energy was used. However, for carcass and part yields of male broilers, PN2 group presented
the greatest economic return. Independently of the product sold, female broiler fed PN3 showed better economic return.
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Desempenho, Frango de corte, Programa alimentar, Rendimento, Viabilidade econômica, Broiler, Carcass yield, Feeding program, Performance
Citação
LEANDRO, Nadja Susana Mogyca; CAFÉ, Marcos Barcellos; STRINGHINI, José Henrique; MORAES FILHO, Roberto; MOURA, Keily Alves de; SILVA JÚNIOR, Renato Pinto da. Plano nutricional com diferentes níveis de proteína bruta e energia metabolizável na ração para frangos de corte. Revista Brasileira de Zootecnia, Viçosa, v. 32, n. 3, p. 620-631, 2003.