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养牛可为人类提供奶肉役力和肥料,是增加牧业产值的一环。据报导,1981年全世界人均有肉32.0公斤,奶104.0公斤,蛋6.6公斤。据有关资料,按提供的总能量折算,牛的产品占60％,按总蛋白质计,牛占50％。近年来,许多发展中国家都有大力发展养牛的势头,以印度为例,1980年人均粮食产量只229.5公斤,但人
Cattle can provide milk for human labor and fertilizer, is to increase the output value of animal husbandry part. It is reported that in 1981, the world had 32.0 kilos of meat, 104.0 kilograms of milk and 6.6 kilograms of eggs. According to the information, according to the total energy provided conversion, cattle products accounted for 60% of total protein, accounting for 50% of cattle. In recent years, many developing countries have vigorously promoted the development of cattle raising. In India, for example, the per capita grain output in 1980 was only 229.5 kg,