Use of herbal medicine for anoestrus management in yak (Poephagus grunniens L.)

摘要

Reproductive rate in yak is low in the natural habitat of high altitude due to several factors, principal ones being winter stress and nutritional deficiency. Age at first service and post-partum anoestrus are major problems that result in small calf crop and long calving intervals. Generally, yak reproduce in alternate year due to short breeding season. Hormonal management of anoestrus is costly and requires expert examination of the animal. This is not possible in the yak due to mobility of herds and inaccessibility of the grazing areas. In this experiment, herbal drug and mineral supplementation were tried in true anoestrus yak in randomly selected animals. · Group I: Control animal with normal concentrate ration plus dry grass and green fodder. · Group II: Normal ration plus Cyclomin 7 tablets (Alved, Mineral supplementation Bolus) one bolus for seven days. · Group III: Normal ration plus Cyclomin 7 tablets followed by Prajana (Indian herbs, Herbal oestrus induction preparation) two boluses for three days. Only 20% of the animals in Group I came to heat in the same breeding season and 40.6% of the animals came to heat in Group II on first treatment while total oestrus percentage increased to 55.8% on subsequent treatment with the same medicine to the non-responders after fifteen days. However, in Group III, 78.7% of the animals showed oestrous symptoms after first treatment and after repeating the treatment to non-responders total oestrus percentage increased to 86.4%. Small amount of concentrate, mineral supplementation and use of Prajana treatment can manage anoestrus condition in yak efficiently.