Fertility in Sjenica Pramenka breed

Abstract

The investigation of the Sjenica Pramenka sheep breed was performed on a privately owned farm during the three-year period. The average fertility was 122.06% and it increased with age (I lambing - 119.37%, II - 123.68%, III - 124.21%). The experiment with oestrus synchronising in the normal breeding season (August) and in the anoestrus period (January and April) was performed by using vaginal pesariums and PSMG. Depending on the season of the treatment, oestrus was confirmed in 96.00%, 85.71% and 94.00% cases, while 82.00%, 60.71% and 56.00% of sheep lambed. All lambed sheep had an increased twining percentage (44%, 29% and 25% in August, January and April, respectively).

Ispitivanje plodnosti sjeničkog soja pramenke obavljeno je na jednoj privatnoj farmi u trogodišnjem periodu. Prosečna plodnost iznosila je 122,06% i povećavala se sa starošću grla (I jagnjenje 119,37%, II - 123,68%, III - 124,21%). Prosečna jalovost ovaca iznosila je 4,83%. Takođe, realizovan je ogled sinhronizacije estrusa u normalnoj sezoni parenja (avgust mesec) i u sezoni anestrije (januar i april) primenom vaginalnih pesarija i PMSG-a. U zavisnosti od sezone tretiranja estrus je konstatovan u 96,00%, 85,71%, odnosno 94,00% slučajeva, a ojagnjilo se 82,00%, 60,71%, odnosno 56% ovaca. Sva ojagnjena grla imala su povećan procenat bližnjenja. Dobijeni rezultati se mogu oceniti zadovoljavajućim i ukazuju da je u boljim zapatima sjeničkog soja pramenke moguće dalje povećanje nivoa plodnosti.