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Influence of sex and rearing method on performance and flock uniformity in broilers—implications for research settings
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Ashley England, Kosar Gharib-Naseri, Sarbast K. Kheravii, Shu-Biao Wu*
Animal Nutrition | 2023, 12(1) : 276 - 283
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Animal Nutrition | 2023, 12(1): 276-283
• Review Article •
Influence of sex and rearing method on performance and flock uniformity in broilers—implications for research settings
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Ashley England, Kosar Gharib-Naseri, Sarbast K. Kheravii, Shu-Biao Wu*
Affiliations
  • School of Environmental and Rural Science, University of New England, Armidale, NSW, 2351, Australia
Published: 2023-03-10 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.

Sex effect  /  Chicken  /  Gut microbiota  /  Nutrient transporter gene expression  /  Sexing method
Ashley England, Kosar Gharib-Naseri, Sarbast K. Kheravii, Shu-Biao Wu. Influence of sex and rearing method on performance and flock uniformity in broilers—implications for research settings[J]. Animal Nutrition, 2023 , 12 (1) : 276 -283 . DOI: 10.1016/j.aninu.2022.12.003
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Article Info
doi: 10.1016/j.aninu.2022.12.003
  • Receive Date：2022-06-21
  • Online Date：2026-02-03
  • Published：2023-03-10
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History
  • Received：2022-06-21
  • Revised：2022-11-02
  • Accepted：2022-12-02
Affiliations
    School of Environmental and Rural Science, University of New England, Armidale, NSW, 2351, Australia

Corresponding:

* Corresponding author. E-mail address: (S.-B. Wu).
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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