摘要 : Dairying has become an important secondary source of income for millions of rural families and has assumed a most important role in providing employment and income generating opportunity. There has been tremendous progress in dair... 展开 Dairying has become an important secondary source of income for millions of rural families and has assumed a most important role in providing employment and income generating opportunity. There has been tremendous progress in dairy production in the country during the last three decades and it has contributed to national income significantly At present milk production in India is about 109.8 million ton (2008-2009) and dairy cows contributes around 40% of total milk produced in India and rest 60% by buffalo (55%) and other species (5%) like goat, camel, etc. As per 18th livestock census (2007), the breedable female crossbred cattle population was 13.24 million (about 21% of total breedable cows); which contribute more than 40% of total cow milk being produced in India. This reveals that the importances of crossbred cows are more as compared to indigenous cows for milk production. 收起