Wannaratana Suwarak, Olanratmanee Em-On, Charoenmuang Kuekaroon, Boriharnthanawuth Thanvarath, Tangtrongwanich Banpatee, Jongpattana Thanawan, Sukhor Yanita, Kongthip Arrita, Sananmuang Thanida
Faculty of Veterinary Medicine, Rajamangala University of Technology Tawan-Ok, Chonburi, Thailand.
Vet World. 2021 Jun;14(6):1459-1464. doi: 10.14202/vetworld.2021.1459-1464. Epub 2021 Jun 7.
Seasonal variations among geographical regions could influence pigeon semen quality differently. This study aimed to determine the seasonal effect on semen availability and quality of racing pigeons in Thailand to understand and improve breeding management in the country.
Semen was collected from six fertile captive pigeons once a week during summer (March-June), monsoon (July-October), and winter (November-February) during 2019-2020. The success rate of semen collection and semen quality was determined in each season - by which changes in average temperature, humidity, and photoperiod were obtained.
Comparable success rates of semen collection were acquired among different seasons, while varied semen qualities were revealed. The percentages of total motility and progressive motility score of sperm were significantly lowest in summer (66.35±3.40 and 3.88±0.15, respectively) compared to monsoon (85.45±2.91 and 4.67±0.10, respectively) and winter (79.29±1.96 and 4.37±0.10, respectively), while its concentration (×10 sperm/mL) and outputs (×10 sperm) were significantly highest in winter (7.62±0.54 and 91.44±10.83, respectively) compared to summer (4.23±0.41 and 48.45±6.35, respectively) and monsoon (3.57±0.30 and 51.45±7.21, respectively). Besides, semen samples collected from birds housing at an average temperature of <29.5°C demonstrated better sperm motility sperm concentration and total sperm counts than those from at a higher temperature.
Winter was regarded as the best season contributing the best semen quality, while summer was the worst. Due to the fluctuation of temperature during summer and winter, the seasonal temperature was implied as the major factor contributing to changes in sperm quality of racing pigeons in Thailand.
地理区域间的季节变化可能对鸽精液质量产生不同影响。本研究旨在确定季节对泰国赛鸽精液可获得性和质量的影响，以了解并改善该国的育种管理。
在2019 - 2020年期间，于夏季（3月至6月）、季风季（7月至10月）和冬季（11月至2月）每周从6只可育的圈养鸽子采集一次精液。测定每个季节的精液采集成功率和精液质量，并获取平均温度、湿度和光照周期的变化情况。
不同季节间精液采集成功率相当，但精液质量存在差异。与季风季（分别为85.45±2.91和4.67±0.10）和冬季（分别为79.29±1.96和4.37±0.10）相比，夏季精子的总活力百分比和前向运动评分显著最低（分别为66.35±3.40和3.88±0.15）；而与夏季（分别为4.23±0.41和48.45±6.35）和季风季（分别为3.57±0.30和51.45±7.21）相比，冬季精子浓度（×10⁶精子/mL）和产量（×10⁶精子）显著最高（分别为7.62±0.54和91.44±10.83）。此外，从平均温度<29.5°C的鸽舍采集的精液样本，其精子活力、精子浓度和总精子数均优于温度较高鸽舍的样本。
冬季被认为是精液质量最佳的季节，而夏季最差。由于夏季和冬季温度波动，季节温度被认为是导致泰国赛鸽精子质量变化的主要因素。
