摘要:为了探讨锦江牛的文持需要量,本试验选取锦江牛公牛12头,随机分为4饲喂水平组饲养试验,并用头罩式呼吸代谢装置,测定产热量。结果:随着精料喂量的增加,锦江牛平均日增重显著提高,产热量(HP, kJ/kg0.75•d)与日增重(△W, kg/d)之间呈线性关系,直线回归方程为:HP=90.758△W +417.53,(P<0.01,r=0.77),文持净能需要量为417.53 kJ / kg0.75•d,总能到文持净能的转化效率为42.57%。31591 毕业论文关键字:锦江牛,能量需要量,产热量,日增重。
RELATIONSHIP BETWEEN HEAT PRODUCTION AND DAILY GAIN IN JINJIANG CATTLE
Abstract: Investigating the nutritional requirement of cattle in different regions or different weather conditions or different varieties is of great importance. Jinjiang cattle is one of three local varieties in Jiangxi province and also is a excellent variety of it. This kind of cattle can survive in high temperature and high humidity, or coarse feed. At the same time, it has specialize like endurance, disease resistance, adaptability and steady hereditary capacity. However, the heat production and the daily gain, also the energy required for growing and maintenance of it have few reports. This experiment derive equation of heat production and daily gain in Jinjiang cattle from head breathing device and site test, to find the relationship between total energy and daily gain, and then provide the foundation for the scientific management of Jinjiang cattle.
Key words: Jinjiang cattle, energy requirement, heat production, daily gain
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