摘要
本文阐述了安×渤 F_1成年母牛的平均体重为 387.40± 47.65kg,比渤海黑牛增长59.09kg,提高18.00% ,差异极显著(P< 0.01)。在所列10项体尺和7项体尺指数对比中,除肢长率外,F_1 均有不同程度的提高,其中以后腿围、前胸宽尤为明显。F_1在毛色、体型方面表现了父本、母本的共同特征,但F_1均无角,额顶隆起极明显,额顶、耳内、乳房基部被毛较长且粗;白章牛多于渤海黑牛。6岁F_1平均产犊为3.54±0.60头,比渤海黑牛的3.29±1.14头多0.25头。
The improvement result showed that average weight of F1 adult female cattle of Angus ×Bohai black cattle was 387. 40±47. 65kg and increased by 18%(59. 09kg) than that of Bohai black cattle(p<0. 01). Except for limp ratio,the 10 body size indexes of F1 have a various amount of increase, especialy for the circumference of thigh and width of brisket. The hair color and body type of F1 cattle showed common characterisitics of parents, F1 cattle without horn have a distinguished bulge on forehead, coarse hair on the top of forehead,inside wall of ear and udderfloor and more white marks than Bohai black cattle. The average number of calves for 6 year old F1 cattle was 3. 54±0. 60 whith was 0. 25 heads more than that of Bohai Black cattle.
出处
《黄牛杂志》
1994年第1期34-36,共3页
Journal of Yellow Cattle Science
关键词
渤海黑牛
安格斯牛
母牛
杂交
Bohai Black Cattle,Angus,Body Size Index
