沙希瓦牛与本地黄牛杂交效果研究

随机从农家抽样测定结果：沙闽Ｆ１公、母牛初生、３、６、１２、１８、２４月龄体重分别比同龄本地黄牛提高４０．１％、２３．９％、３１．０％、２５．７％、２２．３％、２１．９％和４０．７％、２７．５％、２８．０％、３７．７％、２５．７％、２３．３％．沙闽Ｆ１在农家粗放饲养条件下，第１胎泌乳期１９５ｄ，平均产奶量为１２７０ｋｇ，较本地黄牛提高１倍以上．乳脂率５．５％，奶浓味香．１４—１６月龄沙闽Ｆ１８头阉牛舍饲肥育结果表明：沙固Ｆ１平均日增重达８３４ｇ、屠宰率为５１．１％、净肉率４２．０％、眼肌面积５９．２ｃｍ２，分别比本地黄牛提高２２．３％、９．７％、７．１％和２１．６％．沙闽Ｆ１体型好，肩峰高，胸宽深，臀宽，乳房发育好，被毛多呈棕红，适应性强，耐热、耐粗，抗病，不挑食，能较好地适应福建等亚热带地区放牧饲养．甚受群众喜爱．

Study on the Effect of Crossbreeding Native Yellow Cow With Sahiwal Bull

According to the determination result on the samples randomly taken from the farmer households, the weights of Sahiwal-Min hybrid F1 (SMF1), in the ages of newborn,3,6,12, 18 and 24 months increased by 40.1%, 23.9%,31.0%, 25.7%, 22. 3%, 21. 9%,and, 40.7%, 27.5%, 28.0%, 37.7%, 25.7%, 23.3% respectively as compared to nativeyellow cattle in the same ases. In the condition of extensive management and feeding in the farmer households, the lactation preiod of the cows of SMF1 was 195 d and its average milk production was 1270 kg, which more than doubled what native yellow cow producded.The milkfat was 5. 5% and the milk was with delicious taste and in high consistency. The result of feed lot fattening of 8 steer of SMF1 in the ages of 14 to 16 months showed that the average daily weight sam of F1 was 834 S and its dressing percentage was 51.1 % and the meat percentage was 42.0%. Its eye muscle area was 59. 2 cm2. These values increased by 22.3%, 9.7%, 7.1 % and 21. 6% respectively than those of native yellow cattle. SMF1 has a better body conformation,with a high hump,a wide chest and pinbone, an excellent udder and a brown-red hair. They are characterized by possessing strong adaptability, strong tolerance to heat,excellent grazing ability,resistance to diseases ,and no selection on feed ,It has been well suitable for grazing in Fujian and subtropical regions and welcomed by farmers.