Endogenous and exogenous factors at breeding and exploitation of different cow breeds

Breeding and exploitation of all cultural breeds in industrial scales is enough difficult and the most important an expense enterprise. In this regard the continuous search of balance between the production amount increase (beat and milk) and production cost savings constantly makes stock-breeders create and breed new varieties. Most breeds of dwarf cows are created in India - 26 from 30, here their number in the world permanent increased. Important achievement of selectionists of dwarf breeds was become by privitie of immunity, to high-resistivity of these cows to the different diseases. Milk the productivity of these cows averages in a day to three litres of milk, that taking into account its living mass it is possible to consider a record. Percent correlation of dry fat free remains and fat in milk of these midget zoons practically the same, as well as for ordinary cows. Practice proved that they turned out to very clever and more than that cheap in keeping. In winter there are little expenditures on hay and mixed feed, in summer green lawns and small areas of inarables are excellent pastures for them. Today the cost of dwarf cows calves is in the range of 100$ per animal.