Effects of β-carotene supplementation in the diet of laying breeder hens on the growth performance and liver development of offspring chicks

Wang, Guoxia; Wan, Dafang; Wang, Taiping; Gong, He; Ye, Tao; Zhang, Shuai; Lan, Hangzhen; Li, Suo; Wu, Zixiang; Zheng, Xin; Sun, Pu

doi:10.1080/10495398.2023.2218416

Cited by 2 publications

(2 citation statements)

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“…Breeding hens producing sufficient numbers of high-quality eggs and maintaining a good physiological condition are essential for the breeding of good poultry breeds [1,2]. The laying rate is a central issue in the production of commercial layers and breeding hens, and the effective induction of follicular development in laying production could be a promising strategy to improve the laying rate [1,3]. The hypothalamus of the poultry receives stimulation to secrete gonadotropin-releasing hormone (GnRH), which regulates the secretion of prolactin (PRL), follicle-stimulating hormone (FSH), and luteinizing hormone (LH) by the pituitary through body-fluid regulation to regulate poultry egg production.…”

Section: Introductionmentioning

confidence: 99%

“…Nutritional regulatory substances in the diet can affect egg quality and later embryonic development; especially, the efficacy of natural antioxidants has attracted wide attention [3,15]. Among them, carotenoids, mainly existing in the chloroplasts and chromatin of photosynthetic organisms such as plants and algae, are widely used in animal diets to promote growth and reproduction as a result of their good antioxidant and free radicalscavenging abilities [16,17].…”

Section: Introductionmentioning

confidence: 99%

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Dietary Canthaxanthin Supplementation Promotes the Laying Rate and Follicular Development of Huaixiang Hens

Zhao,

Wu,

Liu

et al. 2023

Biology

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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 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, E2 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.

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