日粮蛋白质水平对松辽黑仔猪生长性能的影响

Effects of Dietary Protein Level on Songliao Black Swine Performance

选用80±3日龄、体重为22.7±1.1kg的松辽黑仔猪27头,随机分为3个处理,每个处理3个重复,每个重复3头仔猪。通过测量日增重、日采食量、料肉比、腹泻程度及日粮蛋白质消化率,分析日粮蛋白质水平对松辽黑仔猪生长性能的影响。实验表明,在日采食量方面3组日粮无显著差异。日增重方面,1周和2周时对照组与实验组有差异,在整个实验期3组日粮无显著差异。料肉比方面,1周时对照组与实验组有差异,在整个实验期3组饲料的料肉比无显著差异。腹泻方面,17.7%组和14.7%组的腹泻情况优于对照组。蛋白质消化率方面,1d、2周、3周时对照组与实验组有差异,在整个实验期3组日粮差异不显著。实验表明,当日粮蛋白含量为17.7%时松辽黑仔猪有较低的腹泻率和较好的生长性能及蛋白质消化率,并能较好的体现松辽黑猪的种质特性。

Selected 80 ±3 days old, weight 22.7 ± 1. lkg in Songliao black Swine 27, were randomly divided into 3 treatments, 3 replications for each treatment, each repeated three piglets. By measuring the daily gain, daily feed intake, Feed/Gain（F/G）, diarrhea, dietary protein digestibility, analyzing dietary protein levels on the Songliao black Swine performance. Experimental results show that, in the daily feed intake in three groups no significant difference between diets. Daily gain respect, lw and 2w the control group and experimental group differences in the three groups, throughout the experimental period no significant difference between diets. F/G, lw, when the control group and experimental group differences in the entire experimental period,of three diets had no significant difference in F/G. Diarrhea, 17.7% group and 14.7% group better than the control group. In protein digestibility, 1d, 2w, 3w, when the control group and experimental group differences in the three groups ,throughout the experimental period no significant differences between diets. Experiments showed that when the dietary protein content Was 17.7% of the Songliao black Swine diarrhea have lower rates and better performance and protein digestibility, and can better reflect the characteristics of germplasm of Songliao Black Swine.