Dietary supplementation with astaxanthin alleviates ovarian aging in aged laying hens by enhancing antioxidant capacity and increasing reproductive hormones
文献类型: 外文期刊
第一作者: He, Weizhao
作者: He, Weizhao;Wang, Hao;Tang, Chaohua;Zhao, Qingyu;Zhang, Junmin;He, Weizhao;Wang, Hao;Tang, Chaohua;Zhao, Qingyu;Zhang, Junmin
作者机构:
关键词: astaxanthin; aged laying hen; antioxidant; reproductive hormone
期刊名称:POULTRY SCIENCE ( 影响因子:4.014; 五年影响因子:4.192 )
ISSN: 0032-5791
年卷期: 2023 年 102 卷 1 期
页码:
收录情况: SCI
摘要: We investigated the effects of astaxan-thin supplementation on the egg quality, antioxidant capacity, and ovarian aging of aged laying hens. Six groups of 68-wk-old Hy-line brown laying hens with six replications each, fifteen chickens in each replicate were fed for 12 wk. The control group was fed a basal diet, the positive control group was fed the basal diet supple-mented with 100 mg/kg vitamin E, and the experimen-tal groups were fed the basal diet supplemented with 15 mg/kg, 30 mg/kg, 45 mg/kg, or 60 mg/kg astaxan-thin (Ax15, Ax30, Ax45, and Ax60, respectively). The results showed that astaxanthin accumulated in the egg yolks and improved egg yolk color (P < 0.01) and Haugh unit (P < 0.05). Compared with the control group, the experimental groups a higher number of fol-licles in the ovary and a lower rate of atresia (P < 0.01). Astaxanthin increased the expression of nuclear factor e2-related factor 2 (NRF2) in the ovary (P < 0.05), enhanced the antioxidant capacity of aged laying hens (P < 0.05), and reduced cellular apoptosis (P < 0.05). In addition, astaxanthin improved serum reproductive hor-mone levels (follicle-stimulating hormone, luteinizing hormone, and progesterone) (P < 0.05) with a maximum value observed in Ax60. However, astaxanthin had no effects on estrogen level (P > 0.05). The expression of FSHR and CYP11A1 increased in the follicular granu-losa cells (P < 0.05). Therefore, astaxanthin prevented ovarian aging by improving the antioxidant capacity of laying hens and promoting the production of reproduc-tive hormones. The declining reproductive performance of laying hens in the late laying period may be improved with astaxanthin supplementation.
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