Vol. 11, Special Issue 2 (2022)

Author(s):
Jitendra Kumar, Poonam Yadav, Shivika Chouksey and Atul S Rajput

Abstract:
Our country is largest milk producer in the world. Anestrous is one of the most commonly occurring reproductive problems in cattle in India, affecting livestock productivity and economics to a great extent. It is a functional disorder of the reproductive cycle which is characterized by absence of overt signs of estrus manifested either due to lack of expression of estrus or failure of its detection. Anestrous is observed in post pubertal heifers, during pregnancy, lactation and in early postpartum period in adult animals. The main causes of true anoestrus include low plane of nutrition, chronic or debilitating disease, senility, seasonal change and heavy milk yield. Many hormonal preparations like GnRH, eCG, progestogen, PGF2α alone or in combination have been tried on anoestrus animals to induce oestrus and restore the ovarian cyclicity.