第三十五卷(2006)
54.畜試土雞原原種異地繁殖三代之性能
鍾秀枝(1) 林宗貴(1) 王治華(1) 張秀鑾(2 ) 吳明哲(1) 鄭裕信(1) 王政騰(1)
(1)行政院農業委員會畜產試驗所 (2) 屏東科技大學畜產系
畜試所除了進行土雞品系選育工作外，為因應降低禽流感之風險管理，於2004年開始進行畜試土雞分散種原工作，將L7、L9、L11及 L12等四個近親品系之種蛋共計998個，送往高雄種畜繁殖場進行孵化飼養，作異地活體保種，共孵出465隻雛雞，四個品系之16週齡育成率為95.7 %，並於17週齡後選留具品種特徵之種原作小族群之保種，選留數目為每個品系各選公雞10隻母雞40隻，並於26週齡時進行配種，進行下一世代之繁殖，目前已繁殖三個世代，L7、L9、L11及 L12等四個品系之G1、G2及G3各世代達16週齡體重± 標準機差分別為1485 ± 24公克、1384 ± 17公克、1406 ± 22公克及1552 ± 24公克；1484 ± 19公克、L9、1491 ± 21公克、1530 ± 17公克及1552 ± 24公克；1507 ± 24公克、1461 ± 20公克、1438 ± 20公克及1512 ± 19公克，世代與品系間皆具顯著差異（P<0.001）。
關鍵語：畜試土雞、原原種、繁殖
THE PERFORMANCE OF LRI NATIVE CHICKEN IN THREE GENERATION EX-SITU CONSERVATION
H. C. Chung(1), T. K. LIN(1), C. H. WANG(1), H. L. Chang(2) , M. C. Wu(1) , Y. S. CHENG(1) AND C. T. WANG(1)
(1)Livestock Research Institute(LRI), Council of Agriculture
(2)National Pingtung University of Science and Technology
In order to reduce the risk of Avian influenza, a sub-population of LRI native chicken migrated from core population in Tainan to Kaohsiung animal propagation station. In 2004, 998 fertilized eggs of four inbred lines, L7, L9, L11 and L12 LRI native chicken, were shipped cross Kaohsiung county to the destination station in Pingtung, for the ex-situ conservation. There were 465 chicks hatched in the destination and Survival rate at 16-week of age was 95.7%. Breeding candidates, 10 males and 40 females for each line, were selected at 17-week of age, and inseminated at 26-week of age. Three generations were propagated, G1, G2 and G3, and the body weights at 16 weeks of L7, L9, L11 and L12 were 1485 ± 24g, 1384 ± 17g, 1406 ± 22g and 1552 ± 24g at G1, 1484 ± 19g, 1491 ± 21g, 1530 ± 17g and 1552 ± 24g at G2, and 1507 ± 24g, 1461 ± 20g, 1438 ± 20g and 1512 ± 19g at G3. Differences existed among generations and lines( P< 0.001).
Key Words: LRI Native Chicken, GGP, Reproduction
  
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