Influence of sex and rearing method on performance and flock uniformity in broilers-implications for research settings  

作　　者：Ashley England Kosar Gharib-Naseri Sarbast KKheravii Shu-Biao Wu 

机构地区：[1]School of Environmental and Rural Science,University of New England,Armidale,NSW,2351,Australia

出　　处：《Animal Nutrition》2023年第1期276-283,共8页动物营养（英文版）

基　　金：Sustainable Commercial Egg Production Scholarship of The University of New England (UNE) for funding Ashley England.

摘　　要：Male and female broiler chickens differ in their growth performance,carcass part weights and nutrient requirements.The potential reasons for these differences have been explored by looking at differences in nutrient digestibility,nutrient transporter gene expression as well as gut microbiota populations between male and female birds.Studies have shown that male broilers have higher crude protein requirements compared to female broilers.The expression of monosaccharide and amino acid transporters show conflicting results as expression depends on the interactions between sex and bird age and breed as well as which tissue is sampled.Differences in microbiota populations between the genders were reported which may contribute towards performance differences,however research in this area is limited.The differences observed between the sexes contribute to increased variation in nutrition trials,and the potential to rear birds as equally mixed-sex becomes an option to reduce the variation introduced by the sex effect.Difference in rearing options obviously would only be feasible provided a quick,practical and cost-effective method of sexing birds is available,a topic that is also discussed in this review.

关 键 词：Sex effect CHICKEN Gut microbiota Nutrient transporter gene expression Sexing method 

分 类 号：S831[农业科学—畜牧学]