Journal article

The impact of dietary supplementation of different feed additives on performances of broiler breeders characterized by different egg-laying rate.

Shuju Zhao, Keying Zhang, Xuemei Ding, Pietro Celi, Lei Yan, Shiping Bai, Qiufeng Zeng, Xiangbing Mao, Shengyu Xu, Jianping Wang

Poultry Science | Published : 2019

Abstract

This study was conducted to determine the impact of different feed additives on reproductive performance, egg quality, intestinal morphology, and blood metabolic profile of broiler breeder with different egg-laying rate. A total of 512 AA broiler breeders (48 wk old) were used in a 2 × 4 factorial design which encompassed 2 egg-laying rate levels [average (AR) and low (LR)] and 4 different dietary groups [control (no additive), 6 × 108 CFU/kg Enterococcus faecium (EF), 200 mg/kg apple pectic oligosaccharide (APO), and 1,000 mg/kg tributyrin (TRI)]. As expected, the LR breeders presented higher egg weight, eggshell thickness (P < 0.05), and feed conversion ratio as well as lower egg-laying an..

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University of Melbourne Researchers