EFFECT OF USE OF NON-HORMONAL METHODS FOR INCREASING THE FERTILITY IN SHEEP FROM THE CAUCASIAN BREED

Genoveva Staykova, Jordan Marchev, Nevyana Stancheva

Abstract: An investigation with 423 sheep from the Caucasian breed from Kabiuk State Company was carried out. An evaluation of influence of nonhormonal different methods like additional feeding according to the results on the body condition assessment on the fertility results was made. A statistical effect from optimal body condition without additional feeding, dynamical effect from the additional feeding 20 days before and 15 days after beginning of estrus, acute effect from the additional feeding form 11 till 15 day of estrus cycle (lushing) was tested. Synchronization of estrus was provoked by ram. It was established that using "flushing" the conception rate has gone up to 15.14% and the biological fertility - 23.30%. The dynamic feeding cause the weaker but positive effect on the conception rate (5.82%) and the fertility (10.39%). The static effect on the reproductive results was insignificant regardless of the level of stoutness.

Keywords: body condition score; Caucasian sheep breed; fertility; non-hormonal methods

Date published: 2023-03-02