Observation on the Effect of Whole Lactation Cultivation of Gannan Yak Calves

Abstract:

This experiment compared the growth and development of Gannan yak calves through full lactation and restricted lactation+supplementary feeding,and analyzed and summarized the key technologies for cultivating highquality Gannan yak calves.The results showed that the 6monthold weight of fully lactating male and female calves reached 82.58 and 77.65 kg,respectively,which increased by 10.54 and 11.13 kg compared to restricted lactation male and female calves,with a significant weight gain effect.The average daily weight gain of all lactating male and female calves is 0.38 and 0.36 kg,while the average daily weight gain of restricted lactating male and female calves is only 0.33 and 0.30 kg.In conclusion,it can be seen that implementing full breastfeeding cultivation in the Gannan pastoral area can enable yak calves to reach weaning weight at 6 months of age and achieve early weaning.At the same time,it can effectively accelerate the recovery of female yaks?? physical condition and normal estrus mating in the following year??s breeding season,achieving annual production of yaks.