Restricted Growth of Broilers 1. Effects of Different Restricted Feeding Programs on Broiler Performance and Carcass Characteristics

In this study, the influence of different methods of feed restriction on the performance of broiler with two genotypes, was investigated. Compensatory growth after feed restriction was studied and the effects of the restriction on feed consumption, growth and carcass characteristics were discussed. Broilers in each genotypes were separated in three groups randomly. In the first group, all birds were fed fully (Control). Feed restriction at the level of basal metabolism were used from 7 to 14 days of age in second group, and from 14 to 21 days of age in third group. There has been evidence of compensatory growth in birds restricted in early life (from 7 to 14 and from 14 to 21 days of age). Feed consumption in the restricted birds was less and feed conversion was better than the birds full fed, at 7 th weeks of age. Feed restiction had no significant effect on broiler carcass yield and percentage of abdominal fat pad, legs and breast. As a result, compensatory growth at 6th wk following feed restriction was observed in broilers.