India has a vast reservoir of livestock of considerable genetic diversities. The productivity of the livestock is greatly dependent on their health status and it is indeed a challenging task to provide health care to the sort of gigantic population of our livestock. With a purpose to increase the milk production from cattle a large scale cross breeding programmes with exotic germplasm has been began which has led to higher milk production along side the emergence of quite a lot of diseases in our livestock, since the crossbred populations are more vulnerable to quite a lot of diseases in tropical climate of our country. There are quite a lot of types of diseases which cause huge economic losses in dairy sector. Among them one of the vital important diseases is repeat breeding. Repeat breeding may occur because of selection of cause such as hormonal deficiency, nutrient deficiency, microbial infection and so forth.