放牧绵羊补饲复合预混料应用效果研究

Application Effect of Feeding Grazing Sheep with Compound Premix

摘要: 本研究旨在验证放牧绵羊补饲复合预混料的应用效果，研究选取10月龄新疆细毛羊36只，按补饲情况将绵羊分为三个不同处理组，分为对照组、试验组1、试验组2，每日补饲量分别为0、500 g、500 g，补饲复合预混料为0%、0%、2%，分别于正饲期20天和40天进行称重，记录增重，于45天时进行采血，分离保留血清，测定血液指标，并选取绵羊进行屠宰，记录屠宰指标。实验结果表明，补饲复合预混料增重效果明显，试验组2比对照组增重13.41%，差异显著(P < 0.05)试验2组与试验1组相比，差异极显著(P < 0.01)，试验2组比试验1组增重提高1倍；屠宰后，胴体重明显有升高趋势，对照组、试验组1与试验组2显著(P < 0.05)，试验组血蛋白含量高于对照组，试验组1与对照组对比血钙含量差异极显著(P < 0.05)，试验组2与对照组对比血钙含量差异极显著(P < 0.05)，试验组2与试验组1差异极显著(P < 0.01)；血磷含量对照组与试验组1相对比差异不显著(P > 0.05)；对照组与试验组2对比差异极显著(P < 0.01)；试验组1与试验组2对比差异显著(P < 0.05)；对照组血糖浓度较试验组1和试验组2均为差异极显著(P < 0.01)；试验组1和试验组2对比差异显著(0.01 < P < 0.05)；对比发现IGg对照组与试验组1差异不显著(P > 0.05)，对照组与试验组2相比较差异显著(P < 0.05)，研究结果表明补饲复合预混料能够改善放牧绵羊生产性能和提高其免疫性能。

Abstract: This study aimed to verify the effect of feeding premix application on grazing sheep so we selected 36 10-month-old Xinjiang fine-wool sheep. Through feeding situation the sheep were divided into three different treatment groups including the control group, the test group 1 and the test group 2. Daily feeding amount was 0 g, 500 g, 500 g and feeding premix was 0%, 0%, 2%. The sheep were weighed at regular feeding time, namely the 20th day and 40th day and weight gains were recorded. Blood samples were collected at the 45th day, serum was separated and retained and blood parameters were determined. And we selected the sheep to be slaughtered and recorded slaughter index. Experimental results showed that the effect of supplement premix on weight gain was obvious, the weight gain of test group 2 was 13.41% higher than of control group and this was sig-nificantly different (P < 0.05), and through test group 2 compared with test group 1, the difference was significant (P < 0.01) and weight gain of test group 2 was increased by 1 than test group 1. And after slaughtered, the sheep’s carcass weight tended to increase significantly and that of control group, test group 1 and test group 2 was significantly different (P < 0.05). Blood protein content of two test groups was higher than control group and by a comparison of the content of blood calcium between test group 1 and control group the difference was significant (P < 0.05). By a comparison of the content of blood calcium between test group 2 and control group the difference was significant (P < 0.05) and by a comparison of the content of blood calcium between two test groups the difference was significant (P < 0.01). By a comparison of the content of hyperphosphatemia between test group 1 and control group the difference was not significant (P > 0.05). By a comparison of the content of hyperphosphatemia between test group 1 and control group the difference was not significant (P > 0.05). By a comparison of the content of hyperphosphatemia between test group 2 and control group the difference was significant (P < 0.01). By a comparison of the content of hyperphosphatemia between two test groups the difference was significant (P < 0.05). By a comparison of the concentration of blood glucose between test group 1 or test group 2 and control group the difference was significant (P < 0.01). By a comparison of the concentration of blood glu-cose between two test groups the difference was significant (0.01 < P < 0.05). By a comparison of the content of IGg between test group 1 and control group the difference was not significant (P > 0.05). By a comparison of the content of IGg between test group 2 and control group, the difference was significant (P < 0.05). The results showed that supplementation of premix could improve per-formance and enhance immune properties of grazing sheep.