第四十三卷(2014)
畜試土雞高產蛋品系L7產蛋性能改進
林德育 林義福 蔡秀容 林秀蓮 賴永裕 洪哲明 陳若菁 吳明哲
行政院農業委員會畜產試驗所
為建立高產蛋數選育技術平台，選育高產蛋數土雞品種。行政院農業委員會畜產試驗所以畜試土雞台畜一號近親品系L7族群進行高產蛋數選育，經6個世代對產蛋數的選育，G0世代母雞之產第1個蛋的平均產第1個蛋的日齡、平均體重及平均蛋重分別為160天、1,560公克及30.5公克，G6世代母雞則分別為147天、1,801公克及33.6公克，世代間皆存在顯著性的差異(P < 0.001)。G0世代母雞達40週齡平均體重、平均蛋重及平均產蛋數分別為1,654公克、40.9公克及71.6個，G6世代母雞則分別為2,091公克、43.8公克及92.1個，且世代間皆存在顯著性的差異(P < 0.001)。母雞在40週齡前總產蛋數可達100個以上的G0世代有7.04%，G6世代則有39.02%。本試驗結果顯示，此選育技術可提供種雞場提升母雞產蛋數的技術平台。
關鍵語：土雞、產蛋性能、選育
IMPROVEMENT OF EGG PRODUCTION PERFORMANCE IN LRI NATIVE CHICKEN LINE L7
D. Y. Lin, Y. F. Lin, H. R. Tsai, H. L. Lin, Y. Y. Lai, S. L. Liu, C. M. Hung, J. C. Chen and M. C. Wu
Livestock Research Institute, Council of Agriculture
In order to establish the platform for improve egg production performance in native chicken. High egg number hens were selected for breeding from inbreeding lines L7 of Livestock Research Institute. After six generations of selection for number of eggs production, there were significant differences of the age at first egg(AFE), body weight at first egg(BWAFE), body weight at 40 weeks(BW40), Egg weight at 40 weeks(EW40), number of eggs laid up to 40 weeks of age(EN40) were detected among the generations (P <0.001). The average AFE, BWAFE, BW40, EW40 and EN40 of hens in G0 and G6 were 160 days and 147days, 1,560 g and 1,801 g, 30.5 g and 33.6 g, 1,654 g and 2,091 g, 40.9 g and 43.8 g, and 71.6 eggs and 92.1 eggs, respectively. The percentage of hen yield more than 100 eggs up to 40 weeks of age at G0 and G6 were 7.04% and 39.02%, respectively. Our result shows the platform of improving egg production performance could be used for native chicken breeding farms.
Key Words: Native chicken, Egg production performance, Selection
  
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