Efeitos da adição de complexo multienzimático sobre o desempenho de frangos de corte / Effects of adding multienzyme complex on the performance of broilers

AUTOR(ES)

Natália Barros Petroli Utimi

FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

22/06/2012

RESUMO

Two experiments were conducted at the Department of Animal Science, University of São Paulo (USP), College of Animal Science and Food Engineering (FZEA) in Pirassununga / SP, with the aim of studying the performance of broilers fed diets supplemented with exogenous enzymes. The experimental diets consisted of corn, soybean meal, vitamins, minerals and exogenous enzymes (50 g / 100 kg). In the first experiment were used Cobb 504 chicks distributed in a completely randomized 2x3 factorial: two sexes - males and females, three nutritional levels - Low, low + enzyme complex and conventional, totaling 6 treatments with seven replicates of 12 animals each. The results revealed that males and females, fed diets with reduced nutrient levelswith the addition of enzyme, showed higher average weight and weight gain at 21 and 42 days of age when compared to other treatments (P<0.05). There were no significant differences for carcass traits. In experiment II were used 1080 broilers, males, seven-day-old Cobb 500, distributed in a completely randomized design in factorial 3X3: with three levels of nutrition - conventional, reduced and reduced + enzyme complex and threelevels of restriction - 0%, 2% and 4% - a total of nine treatments with 10 replicates of 12animals. The results showed a significant effect on broiler performance with reducedweight gain and feed the animals. No effects on mortality and incidence of metabolic disorders. There were no significant differences for carcass traits and abdominal fat percentage, however, there was an increase in breast yield for birds fed the enzyme complex in the diet.

ASSUNTO(S)

broiler enzymes aves desempenho enzimas performance

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