Free Dietary Choice and Free-Range Rearing Improve the Product Quality, Gait Score, and Microbial Richness of Chickens
文献类型： 外文期刊
作者： Chen, Siyu 1 ; Xiang, Hai 1 ; Zhu, Xu 1 ; Zhang, Hui 1 ; Wang, Dan 1 ; Liu, Huagui 5 ; Wang, Jikun 1 ; Yin, Tao 1 ; Liu, Lan 1 ;
作者机构： 1.China Agr Univ, Coll Anim Sci & Technol, Natl Engn Lab Anim Breeding, Key Lab Anim Genet Breeding & Reprod,Minist Agr, Beijing 100193, Peoples R China
2.Tohoku Univ, Field Sci Ctr, Lab Land Ecol, Grad Sch Agr Sci, Sendai, Miyagi 9896711, Japan
3.Foshan Univ, Sch Life Sci & Engn, Foshan 528225, Peoples R China
4.Chinese Acad Sci, Inst Genet & Dev Biol, Beijing 100101, Peoples R China
5.Beijing Acad Agr & Forestry Sci, Inst Anim Husb & Vet Med, Beijing 100097, Peoples R China
关键词： chicken welfare; cage rearing; free dietary choice; free-range rearing; gut microbial composition
期刊名称：ANIMALS （ 影响因子：2.752； 五年影响因子：2.942 ）
ISSN： 2076-2615
年卷期： 2018 年 8 卷 6 期
页码：
收录情况： SCI
摘要： Poultry welfare has been extensively studied; however, there is a lack of rigorous scientific knowledge relating to the different aspects of welfare factors and how this may contribute to the production quantity and product quality as well as the welfare of chickens. Therefore, we conducted an integrated study to compare welfare factors in chickens by providing free dietary choice under cage rearing, and further comparing cage rearing with free-range rearing. One hundred chickens each were allocated to a cage rearing group with conventional feeding (CC), a cage rearing group with free dietary choice of mealworms (FDM), a cage rearing group with free dietary choice of mealworms and fresh grass (FDMG), and a free-range rearing system group with free dietary choice of mealworms and fresh grass (FRMG). Results showed that under cage rearing, free dietary choice contributed to better meat quality and gait score, higher values of blood platelets, and a richer gut microbial composition, but poorer egg production than CC chickens. As compared to FDMG, FRMG chickens showed better meat quality, gait score, and feather conditions, as well as a richer gut microbial composition; however, they had poorer egg production and a poorer foot pad and foot feather condition. We conclude that free dietary choice and free-range rearing systems improve the product quality, gait score, and microbial richness of chickens.
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