COMPARATIVE TEST OF TWO SYNTHETIC ANALOGUES OF PGF2Α TO INDUCE SYNCHRONIZED ESTRUS IN EWES FROM SYNTHETIC POPULATION BULGARIAN MILK

N. Metodiev, D. Dimov, E. Raicheva, I. Ralchev

Abstract: The aim of the present study is a comparative test of two synthetic analogues of PGF2α – cloprostenol and alfaprostol to induce synchronized estrus in ewes from Synthetic population Bulgarian milk by double treatment in nine days apart. The experiment was carried out with 28 ewes (14 ewes in each group). The first group was treated with Alfabedyl (alfaprostol 2 mg / ml) – 0.5 ml per animal, and second – with Estrumate (cloprostenol 250 μg/ml) – 0.5 ml per animal. The applied schemes for estrus synchronization showed the same effect for both groups – 92.86%. The fertility at first oestrus was better for the first group compared to the second group – 45.45% vs. 25.0%, while the fecundity of the second group was higher – 166.67% vs.140.0. The obtained results showed that both synthetic analogues of PGF2α were suitable for use in Bulgarian conditions, as we give advantage to the analogue containing alfaprostol due to better fertility obtained at the first estrus.

Keywords: estrus; ewes; prostaglandins; synchronization

Date published: 2017-11-17