Journal article
The impact of dietary supplementation of different feed additives on performances of broiler breeders characterized by different egg-laying rate
S Zhao, K Zhang, X Ding, P Celi, L Yan, S Bai, Q Zeng, X Mao, S Xu, J Wang
Poultry Science | ELSEVIER | Published : 2019
DOI: 10.3382/ps/pez316
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), 200mg/kg apple pectic oligosaccharide (APO), and 1,000mg/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 and qual..
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Awarded by Sichuan Agricultural University
Funding Acknowledgements
This work was supported by the earmarked grant for the National Key Research and Development Program of China (2017YFD0500500). The authors would also like to thank the members of 720-Poultry Nutrition Research Laboratory at the Sichuan Agricultural University for their kind help in animal care and sample collection.