Effects of vitamin E on the reproductive performance of female and male Nile tilapia ( Oreochromis niloticus ) at the physiological and molecular levels

作者：Xu Zhang, Yanqun Ma, Jun Xiao, Huan Zhong, Zhongbao Guo, Cheng Zhou, Manyuan Li, Zhanyang Tang, Kai Huang, Ting Liu · 发表于：Aquaculture Research · 年份：2021 · DOI：10.1111/are.15193 · 被引用次数：13 · 研究领域：Reproductive biology and impacts on aquatic species、Aquaculture Nutrition and Growth、Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities

This study was explored the supplementary of vitamin E on reproduction of tilapia. Five vitamin E supplements (0, 40, 80, 120 and 160 mg/kg) were tested for 90 days. Results: The SGR, GSI and ovarian maturity of female were the highest at Group 120 mg/kg, and the FCR was the lowest. The SGR, GSI and testis maturity of male were the highest at Group 160 mg/kg, and the FCR was the lowest. The levels of FSH and P were significantly increased at Group 120 mg/kg in female, and the levels of E2 reached the maximum. The levels of T and GnRH were increased at Group 160 mg/kg in male. The expression of FSHR in female liver was the highest at Group 160 mg/kg, and the expression of FSHR in ovary was the highest at Group 40 mg/kg. The expression of FSHR and pgr in female kidney was significantly increased at Group 40 and 80 mg/kg. The expression of FSHR and pgr in testis was the highest at Group 160 mg/kg. In conclusion, vitamin E can regulate the secretion levels of reproductive hormones and the expression levels of FSHR and pgr during different developmental stages in tilapia, and thus promote tilapia reproduction and growth. Among them, the reproductive and growth performance of female tilapia were the greatest at Group 120 mg/kg, and for male tilapia, these parameters were the greatest at Group160 mg/kg.