摘要
通过对1318头蜀宣花牛母牛的繁殖性能进行调查,结果显示:蜀宣花牛母牛初配年龄在16～20月龄之间,发情和产犊具有一定的季节性,以9～12月最高,5～8月最低;从牛群结构看,成年母牛占42.9%,1.5～4.0岁青年母牛占55.67%,1.5岁以下小母牛占1.43%;从产犊胎次看,产犊4胎以上的占10.67%,产犊3胎的占11.99%,产犊2胎的占19.69%,产犊1胎的占26.51%,初胎怀孕母牛占13.64%,后备小母牛占17.49%。在所调查的1076头繁殖母牛的2157个胎次中,共产犊牛2163头,其中产公犊1102头,占50.95%,产母犊1061头,占49.05%,公母比为1.04∶1;在2157个产犊胎次中,产犊间隔平均为381.48d,难产率为0.28%,双胎率为0.28%,犊牛成活率为99.26%,群体第一情期受胎率为33.75%。
This paper researched the reproductive performance of 1 318 Shuxuanhua cows, the results showed that the first breading age of Shuxuanhua cows was 16-20 months-old, and its rutting and calving had certain seasonality, which was highest from September to December, from May to August was the lowest. According to the cows＇s tructure, adult cows accounted for 42.9%, 1.5-4.0 years-old young cows accounted for 55.67%, cows of less than 1.5 years-old accounted for 1.43%. According to calving litter time, cows of calving 4 tires had 10.67%, calving 3 tires had 11.99%, calving 2 tyres had 19.69%, calving 1 tire had 26.51%, the first fetal pregnant cows accounted for 13.64%, replacement heifers accounted for 17.49%. Among the 2157 calving numbers, there were 2163 heads of cattle, which had 1 102 heads of bull Calf, accounted for 50.95%, had 1 061 heads of female calves, accounted for 49.05%, male and female ratio was 1.04：1. The average calving interval was 381.48 days, the difficult childbirth rate was 0.28%, double birth rate was 0.28%, calf survival rate was 99.26%, the first stage of conception rate was 33.75%.
出处
《四川畜牧兽医》
2013年第6期27-28,共2页
Sichuan Animal & Veterinary Sciences
关键词
蜀宣花牛
母牛
繁殖性能
Shuxuanhua cattle
Cows
Reproductive performance.
