Priya Ranjan Kumar1*, Sanjay Kumar Singh1, Suresh Dinkar Kharche2, Chethan Sharma Govindaraju1, Bijay Kumar Behera1, Satya Nidhi Shukla3, Harendra Kumar1, Sudhir Kumar Agarwal2
1Division of Animal Reproduction, Indian Veterinary Research Institute, Izatnagar, Uttar Pradesh– 243122 (India); 2Central Institute for Research on Goats, Makhdoom, Mathura–281122 (India), 3Department of Veterinary Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Nanaji Deshmukh Veterinary Science University, Jabalpur Madhya Pradesh–482001 (India)
*Corresponding author: dr.pranjan007@gmail.com

ABSTRACT
Anestrus is a functional disorder of reproductive cycle in cattle and buffalo which is characterized by absence of overt signs of estrus and also affecting the livestock enterprise to a great extent. Incidence of anestrus is more in buffalo than the cattle, and problem is severe during summer. Anestrus is a multifactorial problem but its occurrence signals the inadequate nutrition, environmental stress, uterine pathology and improper managemental practices. It can be classified based on physiological and pathological conditions of the animals. Diagnosis is based on the exploration of the different causative factors involved in. Many therapeutic agents (hormonal and non hormonal) have been used, however, as such there is no single panacea to correct it. Though, recruitment and emergence of follicular wave is usually not affected, the derangement in subsequent growth and development and ovulation of dominant follicle leads to anovulatory anestrus. In order to achieve efficient management strategies, further research is needed for better understanding of its etiology, diagnosis and therapeutics.

Key Words: Anestrus, Cattle, Buffalo, Causes, Diagnosis, Treatment