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Title: Influence of sex and rearing method on performance and flock uniformity in broilers—implications for research settings
Contributor(s): England, Ashley  (author); Gharib-Naseri, Kosar  (author)orcid ; Kheravii, Sarbast K  (author)orcid ; Wu, Shu-Biao  (author)orcid 
Publication Date: 2023-03
Early Online Version: 2022-12-07
Open Access: Yes
DOI: 10.1016/j.aninu.2022.12.003
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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.

Publication Type: Journal Article
Source of Publication: Animal Nutrition, v.12, p. 276-283
Publisher: Zhongguo Xumu Shouyi Xuehui,Chinese Association of Animal Science and Veterinary Medicine
Place of Publication: China
ISSN: 2405-6383
Fields of Research (FoR) 2020: 300303 Animal nutrition
Socio-Economic Objective (SEO) 2020: 100411 Poultry
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Appears in Collections:Journal Article
School of Environmental and Rural Science

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