| China’s animal husbandry is in a period of rapid development,but there are obvious regional differences.Compared with the Qinghai Tibet Plateau,the Jianghuai watershed has a warm climate and abundant forage resources.In order to make up for the defects of long dry season and slow growth of livestock in winter on the Qinghai Tibet Plateau,and to ensure that yaks and Tibetan sheep are put on the market at the right time,yaks and Tibetan sheep are transported to the Yangtze Huaihe watershed area for remote breeding,which not only makes up for the defects of breeding on the Qinghai Tibet Plateau,but also can realize the rapid slaughter of yaks and Tibetan sheep,so as to ensure the maximization of economic benefits and alleviate the grassland bearing capacity on the Qinghai Tibet Plateau Ecological and economic benefits.This experiment takes yak and Tibetan sheep as the research object,analyzes the growth index,physiological index,blood physiological and biochemical index of yak and Tibetan sheep,and explores the adaptability and short-term feeding effect of yak and Tibetan sheep in Jianghuai watershed area,so as to provide scientific basis for yak and Tibetan sheep’s remote breeding and living conservation in Jianghuai watershed area.The results of growth performance showed that:(1)the average daily gain of male yak was 227.1 g / D,which was significantly higher than that of Female Yak(22.5 g / D)(P <0.05)The results showed that yak had the potential to gain weight in Jianghuai watershed area,and the male yak had the best feeding effect;(2)the ADG of Tibetan sheep had a positive growth trend during the feeding period,and the daily gain of Oula male sheep was significantly higher than that of Oula female sheep 0-80 days after Introduction(P < 0.05),and there was no significant difference among breeds(P < 0.05)>05),which indicated that Tibetan sheep had the potential to gain weight in Jianghuai region,and Euler ram had the best growth effect.The physiological indexes showed that:(1)Except for very few time periods,the difference between yak heartbeat and temperature between different treatment groups is not significant(P> 0.05);breathing frequency difference is significant,showing a reduction trend(P <0.05),but the above indicators are within the normal range of yak physiological indicators,indicating that the good adaptability of yak in Jianghuai watershed area;(2)with the prolongation of feeding time,the respiratory rate of Tibetan sheep gradually slowed down,while the heart rate increased significantly.The heart rate of Tibetan sheep after 200 days of feeding was significantly higher than that after 1 day of Introduction(P < 0.05)(3)there were no significant differences in the blood physiological indexes of yak among the treatment groups except for some time periods(P > 0.05);there were no significant differences in the serum biochemical indexes of yak among the treatment groups and at each time point(P > 0.05)(4)except ALT and AST,the other indexes of blood physiology and biochemistry of Tibetan sheep were in normal range,and the difference was not significant(P > 0.05).In conclusion,Yaks and Tibetan sheep have certain adaptability in different places in Jianghuai watershed area,and the low altitude climate has no adverse effect on the health of Tibetan sheep. |
