第四十三卷(2014)
採精認證九月齡公豬總精子數之採精季節及品種差異研究
賴永裕(1) 郭廷雍(1) 顏念慈(1) 吳明哲(1) 陳裕琪(1) 李三玉(1) 蔡秀容(1) 李恒夫(1) 蘇天明(1) 劉振發(1) 廖宗文(1) 黃英豪(1) 劉桂柱(2) 陳培梅(3) 王忠恕(3)
(1)行政院農業委員會畜產試驗所 (2)台灣區種豬產業協會 (3)行政院農業委員會畜牧處
本研究分析2011年至2014年台灣區種豬產業協會所屬會員場的1,119頭參加採精認證9月齡公豬之精液量、精子濃度及總精子數，其中有233頭藍瑞斯、88頭約克夏及798頭杜洛克公豬。採集精液檢測精液量與精子濃度並換算總精子數。結果顯示，比較熱季(4月至9月)與涼季(10月至3月) 在藍瑞斯、約克夏及杜洛克3個品種公豬的精液量、精子濃度與總精子數皆無顯著差異。藍瑞斯公豬在涼季與熱季之平均總精子數分別為723±264億與736±221億，約克夏公豬在涼季與熱季之平均總精子數分別為720±189億與674±230億，杜洛克公豬在涼季與熱季之平均總精子數分別為670±201與689±205億。藍瑞斯公豬之平均總精子數與平均精子濃度在月份間具顯著差異 (P < 0.05)，約克夏公豬之平均精子濃度在月份間具顯著差異(P< 0.05)，杜洛克公豬之平均總精子數與平均精子濃度在月份間具極顯著差異 (P < 0.001)。杜洛克公豬之平均總精子數從2至5月皆達715億以上，並顯著高於7至12月。而杜洛克公豬之平均精子濃度於2至5月達4.02億/毫升，亦顯著高於8至11月份。雖然在涼季與熱季的分析性狀之比較中，3個品種皆無顯著差異，然而從杜洛克公豬各月份之平均總精子數與精子形成的生理期程，顯示公豬總精子數仍受到涼季與熱季的影響。
關鍵語：豬、精子、季節
THE DIFFERENCE OF TOTAL SPERM COUNT ON COLLECTION SEASON AND BREED IN THE SEMEN SAMPLES FROM SEMEN PROVED AT NINE MONTH AGE OF BOAR
Y. Y. Lai(1), T. Y. Kuo(1), H. C. Hsu(1), N. T. Yen (1), M. C. Wu(1), Y. C. Chen(1), S. Y. Lee(1), H. R. Tsai(1), H. F. Lee(1), T. M. Su(1), J. F. Liou(1), C. W. Liao(1), I. H. Hwang(1), K. C. Liu (2), P. M. Chen (3) and C. S. Wang (3)
(1)Livestock Research Institute, Council of Agriculture, Executive Yuan, (2)Formosan Farmers Association for Swine Improvement, (3)Animal Industry Division, Council of Agriculture, Executive Yuan
This study traced 1,119 semen samples proved at nine month age of Landrace (N=233), Yorkshire (N=88) and Duroc (N=798) boars from the members of Formosan Farmers Association for Swine Improvement during 2011 to 2014. Each sample was measures for semen volume and concentration of sperm(COS). And total sperm count (TSC) was converted by semen volumes and concentration of sperm. No significantly different was found between hot season (Apr.-Sep.) and cool season (Oct.-Mar.) on semen volume and concentration and TSC of boar semen in Landrace, Yorkshire and Duroc. The average TSC of Landrace, Yorkshire and Duroc boars in hot season and cool season were 72.3±26.4 and 73.6±22.1, 72.0±18.9 and 67.4±23.0, and 67.0±20.1 and 68.9±20.5 billion sperms/ml, respectively. There were significantly different among of months of TSC and COS in Landrace boars (P < 0.05), and Duroc boars (P < 0.001), and COS in Yorkshire boars (P < 0.05). The averages of TSC in Duroc boars were more than 71.5 billion sperms from Feb. to May and higher than Jul. to Dec. The averages of COS in Duroc boars were more than 0.402 billion sperms from Feb. to May. and higher than Jul. to Dec. Although comparison of those traits between hot season and cool season was not significantly different in the three pig breeds. However, our results showed TSC of each month in Duroc boars based on the physiology of sperm formation process is still affected by the cool season and the hot season.
Key Words: Pig, Sperm, Season
  
|
|
|
