| 隨機小語 |
出類拔萃的人都有一個共通點：使命感。
[金克拉] |
|
第四十四卷(2015)
天噸乳牛之繁殖力評估與選育
吳明哲(1) 林秀蓮(1) 賴永裕(1) 賈玉祥(1) 李素珍(1) 陳志毅(1) 施意敏(1) 黃英豪(1) 方清泉(2) 丁進來(2) 周文玲(3) 陳中興(3) 王忠恕(3)
(1)行政院農業委員會畜產試驗所 (2)中華民國乳業協會 (3)行政院農業委員會畜牧處
天噸乳牛是拍一頭泌乳牛在台灣濕熱氣候下，自開始測乳後的每一個泌乳期(305-2X-ME)估之均乳量有 10,000Kg 以上，亦就是年產乳量有 10 公噸以上，10 公噸的英文是 Ten Tons，取其音取 其義，我們稱這種乳牛為天噸乳牛(Ten Tons Cow)。自 2001 年至 2015 年 10 月，累計有 7,207 頭， 其中 1,102 頭其有其雌親三代以上車譜。天噸乳牛之垮育方向須兼顧乳量及繁殖能力，故參考國際 畜政聯盟(ICAR)轄下種公牛協會(InterBull)之乳牛性能分項「乳量乳質 體型 體細胞數 高繁 產積順 易懷孕 好擠乳J，選取高繁、產積順及易懷孕性狀來評估天噸乳牛之繁殖力。其雌親三 代以上車譜的 1,102 頭中有 381 頭(381/1102=35%)符合高繁產積順條件。高繁三胎以上的天噸乳牛 有 232 頭(232/381=61%)，年度資料顯示於 2002 年僅有一頭，至 2008 年才有 10 頭以上，到 2012 年才有 30 頭以上，以及 2015 年有 77 頭。這 2015 年的 77 頭高繁殖力天噸乳牛，分布於 7 個縣市 28 個酪農戶。顯示選留的天噸乳牛之繁殖力，亦可逐代改進其高繁、產積順及易懷孕性能。
關鍵語:乳牛、繁殖力、選育
REPRODUCTIVITY EVALUATION OF TEN TONS COW AND THEIR BREEDING SCHEME
M. C. Wu(1), H. L. Lin(1), Y. Y. Lai(1), Y. S. Jea(1), S. J. Lee(1), J. Y. Chen(1), E. M. Shy(1), I. H. Hwang(1), Q. Q. Fang(2), J. L. Ding(2), W. L. Chou(3), C. H. Chen(3) and C. S. Wang(3)
(1)Livestock Research Institute, Council of Agriculture, Executive Yuan, (2)Dairy Association of ROC, (3)Animal Industry Division, Council of Agriculture, Executive Yuan
Ten Tons Cow is designated as milk yield of 305-2X-ME greater than 10,000kg for hot and humid environment in Taiwan. For breeding scheme of dairy cattle, selection on milk yield and quality associated with reproductive performance is essential to the hot and humid weather. A total of 7,207 Ten Tons Cow was recorded from year 2001 to October of 2015. Among of them, there are 1,102 head with maternal pedigree in upward three or more generation. To improve the reproduction ability of those of Ten Tons Cow, an evaluation was performed with the application of the guidelines of cow performance evaluation with “Production, Type, Cell count, Longevity, Calving, Fertility, Workability” from InterBull of International Committee of Animal Recording (ICAR). After the evaluation on longevity, calving and fertility for pedigreed cows, there were 381 cows (381/1102=35%) to have longevity and calving records. There were 232 higher reproductive cows (232/381=61%) with at least of three parities. In the records by the tested year, there was only one higher reproductive Ten Tons Cow in 2002, more than 10 cows in 2008, more than 30 cows in 2012, and 77 cows in 2015. Those of 77 higher reproductive cows were raised in 28 farms located in seven counties. Results indicated that the reproduction ability of Ten Tons Cow could be selected generationally on their longevity, calving and fertility performance.
Key Words: Dairy cattle, Reproduction ability, Selection
  
|
|
|
|
|
.jpg)
