文献类型：期刊文献

英文题名：Dietary Canthaxanthin Supplementation Promotes the Laying Rate and Follicular Development of Huaixiang Hens

作者：Zhao, Zhuangzhi[1];Wu, Jiang[1];Liu, Yuan[1];Zhuang, Yijie[1];Yan, Haoguo[1];Xiao, Mei[1];Zhang, Li[1];An, Lilong[1]

机构：[1]Guangdong Ocean Univ, Coll Coastal Agr Sci, Dept Anim Sci, Zhanjiang 524088, Peoples R China

年份：2023

卷号：12

期号：11

外文期刊名：BIOLOGY-BASEL

收录：SCI-EXPANDED(收录号：WOS:001123300300001)、、Scopus(收录号：2-s2.0-85189106071)、WOS

基金：No Statement Available

语种：英文

外文关键词：canthaxanthin; Huaixiang chicken; laying rate; follicular development; reproductive hormones

外文摘要：Canthaxanthin(CX) is a ketocarotenoid, which is widely used in poultry production as a lipophilic antioxidant. Huaixiang chickens are a local breed in China famous for their excellent meat quality; improving their laying rate via nutritional regulation has attracted extensive attention. The aim of this study was to evaluate the effects of dietary CX on the laying rate and follicular development in Huaixiang hens. A total of 180 Huaixiang hens were randomly divided into five groups with six replicates, and six chickens per replication. The control group (CON) were fed a basal diet, and the treatment group (NT) were fed a basal diet supplemented with 4, 6, 8 and 10 mg/kg CX. All chickens were 26 weeks old, living at an average environmental temperature of 25 +/- 2 C-degrees with a relative humidity of 65-75%. The results showed that supplementing the CX improved the laying rate and large white follicles (LWF) number (p < 0.05) and increased the concentration of reproductive hormones (LH, FSH, E(2 )and Prog) (p < 0.05), and the basal diet supplemented with 6 mg/kg CX worked best. Moreover, CX could increase the activities of antioxidant enzymes SOD and GSH-Px (p < 0.05) and reduce the content of the lipid peroxidation product MDA in Huaixiang chickens (p < 0.05); again, 6 mg/kg CX was best. In conclusion, dietary CX had positive effects on the laying rate, ovarian structure, reproductive hormone secretion, follicle development, and the antioxidant capacity of Huaixiang hens, and 6 mg/kg CX was recommended to be added to the diet of Huaixiang chickens.