Effect of applied PMSG dose on reproductive parameters for improved sjenica sheep in anestrous season
2014
Vujić, R. (Agricultural advisory and professional service, Valjevo (Serbia)) | Mekić, C. (Faculty of Agriculture, Belgrade-Zemun (Serbia)) | Novaković, Z. (Ministry of Agriculture, Trade, Forestry and Water Management of the Republic of Serbia, Belgrade (Serbia)) | Romić, D. (Institute Tamiš, Pančevo (Serbia))
This paper shows the results of the effects of higher dose 700 i.u. of natural gonad tropic hormone PMSG application in comparison with usual 500 i.u dose which is used at the farms during the induction and synchronization of estrus in anestrous season in Sjenica improved sheep. This experiment included 90 grown sheep divided into two groups (control group 30 sheep and experimental group 60 sheep). Both groups received polyurethane sponges impregnated with 20 mg of Fluor Geston Acetate (FGA). After 14 days both group sponges were removed. First group received 500 i.u of PMSG, usual dose, and second (experimental group) received 700 i.u of PMSG. Insemination was conducted 48-72 hours after gonad tropic hormone application. Number of sheep that lambed compared to the number of sheep that were treated was 93.33% (control) and 88.33% experimental group. Average fertility of control group sheep was 150.00% while experimental sheep had average fertility of 209.43%, which is more than 59.43% higher compared to control group. Higher dose of PMSG led to higher number of triplets by 7.34%, quadruplets by 14.41% and quintuplets by 4.50% in the experimental group. Higher dose by 200 i.u of PMSG had a positive effect and increased fertility by 59.43%, which negates zero hypothesis that there is no difference between researched treatments and it proved hypothesis that higher dose of PMSG has a positive effect on Sjenica improved sheep during anestrous season.
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