隨機小語 |
假使上帝關上這一扇門,祂會開啟另一扇門。
[愛爾蘭箴言] |
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第四十三卷(2014)
畜產試驗所高產蛋土雞品系CM產蛋性能分析
林德育 林義福 蔡秀容 賴永裕 劉曉龍 洪哲明 陳怡兆 吳明哲
行政院農業委員會畜產試驗所
為評估引入褐色蛋雞來改良土雞產蛋性能的可行性。以畜試土雞台畜一號近親品系L12公雞與配商用褐色蛋雞母雞之雜交一代為基礎族群,進行6個世代自交與產蛋數選育,育成高產蛋土雞品系CM。G0世代近親品系L12母雞之產第1個蛋的平均產蛋日齡、平均體重及平均蛋重分別為171天、1,696公克及32.8公克,G6世代品系CM母雞則分別為139天、1,767公克及35.9公克,世代間皆存在顯著性的差異(P < 0.001)。G0世代近親品系L12母雞達40週齡之平均體重、平均蛋重及平均產蛋數分別為1,704公克、43.6公克及65.7個,G6世代品系CM母雞則分別為1,972公克、52.1公克及113.4個,且世代間皆存在顯著性的差異(P < 0.001)。符合母雞40週齡前總產蛋數達100個以上之條件的G0世代品系L12有4.04%,G6世代品系CM則大幅提高到84.93%。本試驗結果顯示,引入褐色蛋雞可提升土雞母雞產蛋性能。
關鍵語:土雞、產蛋性能、選育
ANALYSIS OF EGG PRODUCTION PERFORMANCE IN LRI-COA NATIVE CHICKEN LINE CM
D. Y. Lin, Y. F. Lin, H. R. Tsai, Y. Y. Lai, S. L. Liu, C. M. Hung, Y. C. Chen and M. C. Wu
Livestock Research Institute, Council of Agriculture
To assess the feasibility of introducing commercial brown layers to improve egg production performance of native chicken. LRI high egg production line CM native chicken, which were selected for egg number based on the F1 population crossed cock of inbreeding line L12 native chicken of Council of Agriculture Livestock Research LRI with hen of commercial brown layer for six generation self-cross. After six generations of selection for egg number 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 inbreeding line L12 hens in G0 were 171 days、1,696 g, 32.8 g, 1,704 g, 43.6 g, and 65.7 eggs, respectively. The average AFE, BWAFE, BW40, EW40 and EN40 of line CM hens in G6 were 139 days、1,767 g, 35.9 g, 1,972 g, 52.1 g, and 113.4 eggs, respectively. The percentage of hens yield more than 100 eggs up to 40 weeks of age at G0 and G6 generations were 0.04% and 84.93%, respectively. Our result shows introducing commercial brown layers could improve egg production performance of native chicken.
Key Words: Native chicken, Egg production performance, Selection
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