摘要
研究遗传基础、营养水平及其互作对杂交肉牛增重效果及血液指标的影响。试验采用4×2双因子试验设计，选取4种不同遗传基础肉牛（夏洛来牛、德国黄牛、红安格斯牛和利木赞牛）分别与西杂母牛杂交的后代44头，饲喂2种不同营养水平日粮，试验期为140d。在低营养水平下，安西杂牛的日增重显著高于夏西杂牛（P〈0．05）。在高营养水平下，利西杂牛的白蛋白含量极显著高于夏西杂牛和德西杂牛（P〈0．01）；在低营养水平下，利西杂牛的白蛋白含量显著高于德西杂牛（P〈0．05）。在高营养水平下，利西杂牛的总蛋白含量显著高于夏西杂牛（P〈0．05）；安西杂牛的甘油三酯含量显著高于德西杂牛（P〈0．05）；夏西杂牛的乳酸脱氢酶活性显著高于德西杂牛（P〈0．05）。在低营养水平下，利西杂牛的尿素氮含量显著高于夏西杂牛和安西杂牛（P〈0．05）；安西杂牛的尿素氮含量，高营养组极显著高于低营养组（P〈0．01）。在低营养水平下，利西杂牛的碱性磷酸酶活性极显著高于安西杂牛（P〈0．01），显著高于夏西杂牛和德西杂牛（P〈0．05）；利西杂牛的碱性磷酸酶活性在低营养组显著高于高营养组（P〈0．05）。杂交牛的日增重、碱性磷酸酶活性和乳酸脱氢酶活性受遗传效应影响显著，白蛋白和尿素氮含量受遗传效应和营养效应影响均显著。
The aim was to study the influence of genetic effect,nutrition effect and the interaction effect on daily gain and blood index of crossed beef. Baseed on 4 × 2 double-factor design,Forty-four heads of crossed herds （Charolais, Gelbvieh, Angus and Limousin ） × Simmental ♀ were introduced,feeding two different nutritional level of diet,the experimental period was 140 d including the 15-day prefeeding period. Under lower nutrition level,average daily gain in Angus-crossed beef were higher than that in Charolais-crossed beef（P〈0.05）.Under higher nutrition level,Alb in Limousin-crossed beef were higher than that in Charolais-crossed beef and Gelb- vieh-crossed beef （P〈0.01）;Under lower nutrition level, Alb in Limousin-crossed beef were higher than that in Gelbvieh-crossed beef （P〈0.05）.Under higher nutrition level,TP in Limousin-crossed beef were higher than that in Charolais-crossed beef（P〈0.05 ）,TG in Angus-crossed beef were higher than Gelbvieh-crossed beef（P〈0.05 ）; LDH in Charolais-crossed beef were higher than Gelbvieh-crossed beef （P〈0.05）.Under lower nutrition level, BUN in Limousin-crossed beef were higher than that in Charolais-crossed beef,Angus-crossed beef（P〈0.05）; BUN in Angus-crossed beef under higher level of nutrition were higher than that of lower nutrition（P〈0.01 ）o Under lower nutrition level,AKP in Limousin-crossed beef were higher than that in Angus-crossed beef（P〈0.01 ） and that in Charolais-crossed beef , Gelbvieh-crossed beef（P〈O.05 ）o AKP in Limousin-crossed beef under lower level of nutrition were higher than that of higher nutrition（P〈0.05 ）.[Conclusion] Daily gain,AKP,LDH were influenced by, genetic factor,ALB,BUN were influenced by genetic and nutritional factor at the same time.
出处
《牧草与饲料》
2011年第3期22-26,共5页
Journal of Forage & Feed
基金
国家科技支撑项目（2007BAD55802）.
