ANALYSIS OF INCIDENCE OF INFERTILITY IN CATTLE OF HOWRAH DISTRICT IN WEST BENGAL, INDIA

A total of 823 numbers of cattle (342 Crossbred Jersey and 481 Non-descript) were presented for gynaeco-clinical examination after considering specific history of cattle at 26 fertility camps during January 2006 to December 2008 in flood prone rural areas of Howrah district of West Bengal, India. Statistical analysis of the data pointed out that among overall infertility problem incidence of anestrous and repeat breeding were 67.68 % and 32.32 % respectively. Incidence of anestrous was higher in Non-descript cattle (53.86 %) than that Crossbred Jersey cattle (46.14 %) and incidence of repeat breeding was also significantly (P < 0.001) higher in non-descript cattle (68.05%) than that of crossbred (31.95%) animal. Irrespective of breeds the incidence of true anestrous, subestrus, anestrous due to pyometra with persistent corpus leuteum and infantile genitalia with other congenital disorders were 81.51 %, 9.34%, 1.44% and 7.71% respectively. It also revealed that incidence of repeat breeding due to anovulatory estrus, follicular cyst and uterine infection were 43.61%, 46.24%, and 10.15% respectively which were also significantly higher (P