Division of Avian Physiology and Reproduction, ICAR-Central Avian Research Institute, Bareilly, India.
Department of Livestock Farm Complex, Tamil Nadu Veterinary and Animal Sciences University, Chennai, India.
Int J Biometeorol. 2022 Aug;66(8):1547-1560. doi: 10.1007/s00484-022-02299-x. Epub 2022 May 14.
A biological experiment was carried out in twenty-four adult healthy breeder males each in turkey (Beltsville small white) and egg type chicken (White Leghorn Babcock) in order to assess the seasonal influence on semen production and quality. The birds were maintained in individual cages under uniform husbandry conditions throughout the year. The birds were fed with breeder ration and water ad libitum was offered with a constant photoperiod of 14 h/day. Physical and biochemical characteristics of semen, serum hormones (testosterone and thyroxine), and antioxidant activity (catalase and lipid peroxidation) were evaluated throughout the year (January-December). Based on the THI calculations, the observations were classified under three different seasons, namely, winter (November-February), spring (March, April, and October), and summer (May-September). Semen physical parameters, sperm concentration, motility, live sperm percentage, and sperm plasma membrane integrity were superior during the winter season. In seminal plasma, biochemical parameters (phosphorus, ALT, ALP, AST, and uric acid) had a significant (P < 0.05) difference between seasons. There was a significant difference (P < 0.05) among serum hormones (testosterone and thyroxine) that were higher during the winter season. Significant variation was observed in catalase and lipid peroxidation antioxidant enzyme activities (seminal and blood plasma) in winter than in the other two seasons. Both the turkey and egg type chicken breeders exhibited superior seminal characteristics, sex hormone profile, and antioxidant enzyme activity during winter seasons.
为了评估季节对精液生产和质量的影响，在 24 只成年健康雄性繁殖土耳其（贝尔茨维尔小型白）和蛋鸡（白来航巴布考克）中进行了一项生物学实验。全年，这些鸟类在单独的笼子中以统一的饲养条件饲养。鸟类喂食繁殖饲料，自由饮水，并保持每天 14 小时的恒定光照周期。全年评估精液的物理和生化特性、血清激素（睾酮和甲状腺素）和抗氧化活性（过氧化氢酶和脂质过氧化）。根据 THI 计算，观察结果分为三个不同季节，即冬季（11 月至 2 月）、春季（3 月、4 月和 10 月）和夏季（5 月至 9 月）。冬季精液的物理参数、精子浓度、活力、活精子百分比和精子质膜完整性较好。在精液中，生化参数（磷、ALT、ALP、AST 和尿酸）在季节之间存在显著差异（P<0.05）。血清激素（睾酮和甲状腺素）在冬季较高，存在显著差异（P<0.05）。冬季的抗氧化酶活性（精液和血浆）中过氧化氢酶和脂质过氧化的变化明显。土耳其和蛋鸡繁殖者在冬季表现出较好的精液特性、性激素谱和抗氧化酶活性。
