不同颗粒饲料补饲对藏羊生产性能的影响研究

Study on the Effect of Different Pellet Feed on the Production Performance of Tibetan Sheep

冷季羊只体重下降乃至乏弱死亡是困扰高寒牧区草地畜牧业生产的主要问题之一,用不同颗粒精料补充料对高寒牧区藏羊进行90d的保膘试验研究,结果表明:Ⅰ、Ⅱ组羊在90d试验期中总增重分别为2.04kg、2.93kg,比Ⅲ组掉膘1.24kg分别提高3.28kg,4.17kg;Ⅱ组又较Ⅰ组提高0.89kg。Ⅰ、Ⅱ组羊日增重分别为34g、48.83g,Ⅲ组日掉膘20.67g。Ⅰ、Ⅱ组增重率分别为5.29%、8.41%,比Ⅲ组分别提高8.51、11.63个百分点;Ⅰ、Ⅱ组羊比Ⅲ组增重效果有极显著的提高(P<0.01),其中Ⅱ组增重效果最好。

Weight loss or weakness to death of sheep in cold season is one of the major problems plagued the animal husbandry production in alpine grassland. This study was conducted to evaluate the effect of different pellet feed on the production performance of Tibetan sheep during a 90 days experimental period. The results showed that： total weight gain of sheep in group Ⅰ and group Ⅱ were 2.04 kg and 2.93 kg respectively, which increased more 3.28 kg and 4.17 kg respectively than group Ⅲ which lost 1.24 kg. The average daily gain of group Ⅰ and group Ⅱ were 34 g and 48.83 g, while group Ⅲ lost 20.67 g every day. The weight gain rates of group Ⅰ and group Ⅱ were 5.29 % and 8.41% respectively, which increased by 8.51% and 11.63 % than group Ⅲ respectively. The group Ⅰ and Ⅱ significantly increased weight gain （P〈0.01） compared with group Ⅲ, and group Ⅱ obtained a best weight gain.