摘要
为研究不同营养水平日粮对断奶西门塔尔犊牛的生长性能和血清生化指标的影响。试验选择平均体重为(95.19±0.94) kg的断奶西门塔尔犊牛24头,随机分为4组,每组6头。分别饲喂不同营养水平的日粮,即试验Ⅰ组(CP 17.88%,NE 3.10 MJ/kg),试验Ⅱ组(CP 16.10%,NE 3.05 MJ/kg),试验Ⅲ组(CP 18.13%,NE 3.37 MJ/kg),试验Ⅳ组(CP 20.20%,NE 3.65 MJ/kg),试验期为100 d,预试期10 d。结果表明:①试验Ⅳ组的平均日增重、胸围与试验Ⅱ组相比差异显著(P<0.05),其余各组间差异均不显著(P>0.05);各组平均日采食量差异均不显著(P>0.05);试验Ⅳ组料重比与试验Ⅱ组差异显著(P<0.05),试验Ⅱ组与试验Ⅰ组、Ⅲ组相比料重比差异显著(P<0.05),试验Ⅳ组与试验Ⅰ组、Ⅲ组相比料重比差异显著(P<0.05);试验Ⅳ组的增重效益较试验Ⅰ、Ⅱ、Ⅲ组好;②试验Ⅲ组的谷草转氨酶浓度显著高于Ⅰ组和Ⅱ组(P<0.05);其他血清生化指标各组之间差异不显著(P>0.05)。综上所述,在本试验条件下西门塔尔犊牛当饲喂高营养水平日粮(CP 20.20%,NE 3.65 MJ/kg)时,犊牛生长更快,能够为养殖户获得更好的经济效益。
To study the effect of different nutrition level diets on growth performance and serum biochemical indexes of weaned simmental calves. The trial selected 24 weaned simmental calves with an average weight of(95.19±0.94) kg, randomly divided into 4 groups of 6 in each group. Diets fed with different levels of nutrition. Test group Ⅰ(CP 17.88%, NE 3.10 MJ/kg), test group Ⅱ(CP 16.10%,NE 3.05 MJ/kg), test group Ⅲ(CP 18.13%, NE 3.37 MJ/kg), test group Ⅳ(CP 20.20%, NE 3.65 MJ/kg),with a test period of 100 days and a pre-test period of 10 days. The results showed that the average daily weight gain, chest circumference were significantly different from that of test group Ⅱ(P<0.05),the other groups were not significant(P>0.05),the average daily feed intake was not significant(P>0.05), the F/G of test group Ⅳ was significantly different from that of test group Ⅱ(P<0.05), the F/G of test group Ⅱ was significantly different from that of test group Ⅰ and Ⅲ(P<0.05), and the F/G of test group Ⅳ was significantly different from that of group Ⅰ and Ⅲ(P<0.05);the weight gain benefit of test group Ⅳwas better than that of test group Ⅰ, Ⅱ and Ⅲ;the concentration of aspartate in test group Ⅲ was significantly higher than that in group Ⅰ and groupⅡ(P<0.05);and the difference among other serum biochemical indexes was not significant(P>0.05).To sum up, when fed with a high nutrient level diet(CP 20.20%, NE 3.65 MJ/kg) under this experimental condition, the calves grew faster and could obtain better economic benefits for farmers.
作者
高兴超
汪继武
张昌吉
史金平
杨海峰
成述儒
Gao Xingchao;Wang Jiwu;Zhang Changji;Shi Jinping;Yang Haifeng;Cheng Shuru
出处
《饲料工业》
北大核心
2020年第7期25-30,共6页
Feed Industry
基金
奶牛营养学北京重点实验室开放基金-断奶犊牛全混合日粮DNF来源对犊牛生长影响的研究与应用[033-036258]
农业部行业专项-牧区极端条件下牛羊应急专用饲料开发与示范[201303062-5]
企业合作技术研发项目-甘肃天耀草业科技有限公司合作项目[XZ20181029-1]。
