第五十二卷(2023)
105. 季節對杜洛克公豬精液品質之影響
彭麟量(1) 郭廷雍(1) 林秀蓮(1) 賴永裕(1) 林德育(1) 許順貴(2) 劉桂柱(2) 楊鎮榮(1)
(1)農業部畜產試驗所 (2)台灣區種豬產業協會
氣候變遷走全球面臨的議題，環境溫度提高使熱帶及亞熱帶地區動物飼養挑戰加劇，熱緊 迫會對公豬生殖力造成負面影響。試驗收集 2014 至 2015 年台灣區種豬協會拍賣之杜洛克 公豬精液，依採精月份分為 3-5 月（春季）、6-8 月（夏季）、9-11 月（秋季）及 12-2 月（冬 季），評估採精季節對精液量、活力、濃度、總精子數、存活力、頭帽與精子膜完整性、粒 線體去極化及精子染色質結構完整性之影響，結果顯示，杜洛克公豬精液濃度春季及冬季 顯著高於夏季及秋季（P < 0.05），總精子數春季及冬季顯著高於秋季（P < 0.05）﹔粒線體去 極化比例秋季顯著高於春季（P < 0.05），精子染色質結構完整性秋季顯著低於春季（P < 0.05），秋季收集之精液品質較春季差，綜上，杜洛克公豬的精液品質受季節影響，為因應 氣候變遷，未來選育公豬耐熱性能可考慮將熱季精液評估納入指標。
關鍵語：精液品質、流式細胞儀
Seasonal effect to semen quality of duroc boars
L. L. Peng(1), T. Y. Kou(1), H. L. Lin(1), Y. Y. Lai(1), D. Y. Lin(1), S. K. Hsu(2), K. J. Liu
(2) and J. R. Yang(1)
(1)Taiwan Livestock Research Institute, Ministry of Agriculture.
(2)Formosan Farmers Association for Swine Improvement
Climate change is a global issue. Increased ambient temperatures will intensify the challenges of raising animal in tropical and subtropical areas. Heat stress have a negative impact on boar fertility. This experiment collected the semen of Duroc boars auctioned by the Formosan Farmers Association for Swine Improvement from 2014 to 2015. Samples were divided into 4 group by March-May (spring), June-August (summer), September-November (autumn) and December- February (winter) and evaluated the effect of season on semen quality traits such as volume, motility, concentration, total sperm number, viability, acrosome and sperm membrane integrity, mitochondria depolarization and sperm chromosome structural integrity. The results showed that the semen concentration of Duroc boars in spring and winter were significantly higher than that in summer and autumn (P < 0.05). The total sperm number in spring and winter were significantly higher than in autumn (P < 0.05). The proportion of sperm mitochondria depolarization in autumn was higher than in spring (P < 0.05). The sperm chromatin structure integrity in autumn was lower than in spring (P
< 0.05). It shows that the semen quality in autumn was worse than in spring. The semen quality of Duroc boars are affected by season. In order to cope with climate change, semen evaluation indicators in hot seasons can be considered selection of boars for heat tolerance in the future.
Key Words: Semen quality, Flow cytometry
  
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