Effects of energy restriction during growing phase on the productive performance of Hyline Brown laying hens aged 6 to 72 wk.

ABSTRACT: The aim of this study was to assess the effects of energy-restricted feeding during growing phase on the productive performance of Hyline Brown laying hens aged 6 to 72 wk. A total of 720 six-week-old layer chicks were allocated equally to 3 groups with 6 replicates of 40 pullets each, and were fed 1 of 3 diets that were nutritionally similar except for the apparent metabolizable energy corrected for nitrogen (AME_n) content. At the age of 6 to 17 wk, the pullets in the control group were given diet with 2,850 kcal/kg AME_n, and were fed ad libitum. The levels of AME_n in diet of pullets in the experimental groups were 90% (2,565 [2,850 × 90%] kcal/kg) and 80% (2,280 [2,850 × 80%] kcal/kg) of that in control group, and the daily amount of feed was restricted t

SUBMITTER: Lu J 

PROVIDER: S-EPMC10432841 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature