冷季藏羊补饲试验效果观察

藏羊是青海地区特有的牲畜品种,生活在高海拔气候严寒,生长条件恶劣的环境下。但由于青藏高原冬季枯草期漫长,在枯草期内牧草供给缺乏,造成藏羊的体重损失严重,甚至会影响藏羊的正常生长发育,引发藏羊死亡。为进一步验证冬季藏羊补饲的效果,于2018年10月15日至2019年5月30日,从青海省达日县的一个藏羊养殖场选择50头2岁的母羊作为试验对象,按照随机原则将其划分为试验组和对照组,每组25头,试验组羊群在进行传统放牧养殖的基础上每天补充青干草0.4 kg,混合精饲料0.1 kg,对照组藏羊按照常规放牧方式进行管理,并在试验前、试验中期和试验末期各进行称重,测量增重和增重率,研究结果表明,在寒冷季节放牧养殖模式下,通过对羊群进行适量的饲料补充能增加机体的营养供给,试验组羊群在试验中期、试验末期的平均增重量分别为2.78、3.64 kg,增重率分别为13.11%、16.32%,而对照组的平均增重量和增重率呈现负相关,由此得出冬季寒冷季节补充适量的饲料有利于藏羊安全越冬,并维持身体膘情。

Observation on the Effect of Supplementary Feeding of Tibetan Sheep in Cold Season

Tibetan sheep is a unique breed of livestock in Qinghai Province.It lives in high altitude,cold climate and poor growing conditions.However,due to the long winter withered grass period in qinghai-tibet Plateau and the lack of forage during the withered grass period,the weight loss of Tibetan sheep is serious,and even affects the normal growth and development of Tibetan sheep,causing the death of Tibetan sheep.To further verify the effect of supplementary feeding on Tibetan sheep in winter,50,2-year-old ewes were selected from a Tibetan sheep farm in Tongren county,Qinghai province,from October 15,2018 to May 30,2019,according to the random principle,the sheep were divided into experimental group and control group,each group had 25 sheep,the sheep in the experimental group were supplemented with 0.4 kg of hay and 0.1 kg of mixed concentrate feed every day,the Tibetan sheep in the control group were managed according to the conventional grazing method,and weighed before,during and at the end of the experiment,and the weight gain and weight gain rate were measured,the average weight gain was 2.78 kg,the average weight gain was 3.64 kg,and the weight gain rate was 13.11%and 16.32%,respectively,the average weight gain and the weight gain rate of the control group showed a negative correlation.Therefore,it was concluded that adding proper amount of feed in winter cold season was beneficial to Tibetan sheep to survive the winter safely and maintain body fat condition.