The development situation of selected big size buffalos in Chiem Hoa district, Tuyen Quang province
The experiments aims to evaluate the fluctuation in volume, size and fertility of 50 female and 10 male buffalos selected as a base of offspring comparison in future. There were 50 female and 5 male buffalos were monitored individually on farm of raisers in 3 communes of Chiem Hoa district, Tuyen Quang province; 5 male buffaloes were monitored at the Animal Husbandry Reseach and Development Center for Mountainous Zone - Animal Instistude of Animal Science. The results showed that the weight of female buffalos were increased from 451.70 to 466.05 kg, male buffalos were raised from 604.88 to 638.17 kg in 12 months. In the first six months of the year, male and female buffalos had increased 100.34 and 48.06 g/head/day equivalent 1.47 and 0.51 % respectively, in the last haft of the year, the weight of female and male bufalos were developed with 84.61 and 31.69 g/head/day meaned 1.20 and 0.32 %. After 12 months of raising, the heart girth of male and female buffalos were increased from 209.1 and 197.88 cm to 212.8 and 200.33 cm; body length from 156 and 130.15 cm to 159.3 and 131.19 cm, withers height from 131.12 and 121.87 cm to 131.6 and 122.20 cm; hip height from 25.1 and 21.92 cm to 25.3 and 22 cm; The body indexs of research buffalos were higher than domestic buffalos and equivalent to exotics. The female buffalo has early reproduction and the litter interval is 15.32 months, the succesfull breeding rate of male and female bufalos is over 94%.
