Effects of programs of feed restriction on the productivity and economic performance and fat deposition in broiler chickens carcass

Revista Brasileira de Zootecnia

Lana, Ângela Maria Quintão³  Rostagno, Horacio Santiago²  Donzele, Juarez Lopes²  Lana, Geraldo Roberto Quintão¹ 

[1] UFRPE, Recife;UFV;UFRRJ

关键词: economic analysis;    broiler chicken;    abdominal fat;    total fat;    carcass;    special cuts yield     Introdução Nos últimos anos;    a avicultura teve seu perfil radicalmente modificado;    devido aos avanços nas áreas de manejo;    melhoramento genético;    nutrição e sanidade;    que permitiram significativos aumentos na eficiência da produção avícola;   

DOI  :  10.1590/S1516-35981999000600018

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

The objective of this work was to evaluate, at 42 days of age, the productivity and economic performance, and the carcass and special cuts yield, in broiler chickens allotted to different quantitative feeding restriction programs applied in early age. A completely randomized design was used, in a 5 x 2 (feeding restriction program versus sex) factorial arrangement and five replicates with 20 birds per experimental unit. Feed intake and weight gain were reduced by the feed restriction programs, but feed: gain was not affected. The carcass and special cuts yield and abdominal content were not affected by feed restriction programs. The economic results showed that feed restriction is indicated mainly when the diet price is high and broiler chicken price is low in the producer market.

【 授权许可】

CC BY-NC