利用CNCPS预测安格斯生长牛干物质采食量和平均日增重的效果评价

发布时间：2018-05-02 23:01

本文选题：CNCPS模型 + 安格斯生长牛　；参考：《黑龙江畜牧兽医》2017年03期

【摘要】：为了比较康奈尔净碳水化合物和蛋白系统(CNCPS)模型预测的安格斯生长牛干物质采食量和平均日增重与实测值的相近程度,试验采用随机分组(1组为对照组,2组为添加蛋氨酸组)的方法,测定了安格斯生长牛的实际采食量和平均日增重。结果表明:1)两组牛的干物质采食量分别有86.7%和86.7%的点落在95%的置信区间内;两组牛的平均日增重分别有80.0%和73.3%的点落在95%的置信区间内;两组牛干物质采食量和平均日增重的预测值与实测值均差异不显著(P0.05)。2)经线性回归分析,两组牛的干物质采食量实测值和预测值有较高的相关系数(0.892 9和0.812 1),两组牛的平均日增重实测值和预测值有较高的相关系数(0.862 2和0.765 0),均具有较高的相似度。说明CNCPS模型对安格斯生长牛干物质采食量和平均日增重具有较好的预测能力。
[Abstract]:To compare the predicted dry matter intake and average daily gain (ADG) of Angus growth cattle with the CNCPS model of Cornell net carbohydrate and protein system, The actual feed intake and average daily gain (ADG) of Angus growing cattle were measured by using the method of random grouping 1 group as control group and adding methionine group 2 as control group. The results showed that the dry matter intake of the two groups was 86.7% and 86.7%, respectively, and the average daily gain of the two groups was 80.0% and 73.3%, respectively, and the average daily gain of the two groups fell within the 95% confidence interval. The predicted values of dry matter intake and average daily gain of the two groups were not significantly different from the measured values by linear regression analysis. The measured and predicted dry matter intake values of the two groups had high correlation coefficients of 0.892 9 and 0.812 1g, and the average daily gain measured values and predicted values of the two groups had higher correlation coefficients (0.862 2 and 0.765 0), both of which had high similarity. CNCPS model can predict dry matter intake and average daily gain of Angus growth cattle.
【作者单位】：石河子大学动物科技学院;新疆西部牧业股份有限公司;
【分类号】：S823;;S818.9

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