Cattle husbandry is done for two purposes - Milk and Draught labour for Agricultural work such as tilling, irrigation and carting. Indian cattle belongs to two different species, Bos Indicus, cows and Bos bubalis, buffaloes. Milk - producing females are called milch animals (dairy animals), wild one used for farm labour are called draught animals. Milk production depends to some extent on the duration of lactation period, meaning the period of mild production after the birth of a calf. milk production can be increased by increasing the lactation period. Exotic or foreign breeds (for eg. Jersey, Brown Swiss) are selected for long lactation period, wild local breeds ( for eg Red Sindhi, Sahiwal ) show excellent resistance to diseases. The two can be cross breed to get animals with both the desired qualities.