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38.種公豬繁殖性能場內檢定及認證

賴永裕⁽¹⁾  顏念慈⁽¹⁾  蘇清全⁽¹⁾ 李恆夫⁽¹⁾  劉桂柱⁽²⁾  吳明哲⁽¹⁾

⁽¹⁾行政院農業委員會畜產試驗所  ⁽²⁾台灣區種豬產業協會

台灣區種豬產業協會所屬21家會員場實施種公豬採精性狀檢定及認證，95年度從9501期至9507期等7期，計檢定認證杜洛克275頭，藍瑞斯88頭，約克夏18頭。各場在公豬採精檢定前均曾試教爬假母臺，因此各品種駕乘意願均高，後肢強度均正常。以陰莖長度檢驗精液量、精蟲濃度與活力的相關，結果無顯著。精液採集量在杜洛克品種多分布於100毫升至150毫升間，藍瑞斯在200毫升左右，亦有高達500毫升者。以精液性狀標準鏡檢經各種豬場精選之受檢豬，有5.1%的杜洛克與2.3%的藍瑞斯，被檢出因精子活力低或死精而無受精能力。比94年度(9405至9408期)的12.3%的杜洛克公豬與10.3%的藍瑞斯公豬，出場拍賣公豬繁殖性能已有進步，目測狀況下仍有精液稀薄或無精狀況有5.1%的杜洛克與2.3%的藍瑞斯，亦比94年度的12.3%與18%改進很多，陰莖外觀異常在杜洛克檢出2.2%。種公豬拍賣平均售價以採精認證的前一年度(9304期至9403期)與有採精認證的這一年半期間(9404期至9507期)比較，發現每頭杜洛克減少6,298元，但每頭藍瑞斯與約克夏分別提高4,127元與4,363元銷售價。

關鍵語：種公豬、繁殖性能

On-farm test for reproductive performance of boars and its application

Y. Y. Lai⁽¹⁾, N. T. Yen⁽¹⁾, C. C. Su⁽¹⁾, H. F. Lee⁽¹⁾, K. C. Liu⁽²⁾, M. C. Wu⁽¹⁾

⁽¹⁾Livestock Rsearch Institute, Council of Agriculture

⁽²⁾ Formosan Industry Association for Swine Improvement

Participants of on-farm test for reproductive performance (OTRP) of boars were 21 breeding farms, member of Formosan Industry Association for Swine Improvement (FIASI).The young boars were eight to ten months old and tested free of porcine stress syndrome (PSS) provided by members of FIASI for the public auction. Boars tested in the period from 7 to 21 days before the public auction depend on the schedule arranged by the association. In total, there were 7 times auctions and 275 Durocs, 88  Landraces and 18 Yorkshires were certified for the semen characteristics.  The results showed 5.1% Duroc and 2.3% Landrace had sperm motility problem, and 1.8% Duroc and 5.7% Landrace had trouble on low sperm concentration.  Only Duroc had the weakness of penis deformity with a frequency of 2.2%.  No significant associations were detected for penis length with semen volume or with semen quality. The average boar auction price of before and after OTRP practice were -6,298 NT dollars difference for Duroc, but were + 4,127 dollars and + 4,363 dollars for Landrance and Yorkshire.

Key Words: boar, Reproductive performance