Ismudiono Ismudiono

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THE INDUCTION OF TWINNING BIRTH IN FATTY TAIL EWES BY USING LOW DOSE OF PMSG

Ismudiono Ismudiono, Abdul Samik, Tita Damayanti Lestari

Abstract
The aims of the research were to know the effect of low dose of PMSG for inducing twinning birth in Fatty Tail ewes. Thirty ewes were divided into two groups, each ewe of the first group (control, n=15) was given 5 mg PGF by intramuscular injection. Another 15 ewes in the second group were given combination of 100 IU PMSG and 5 mg PGF intramuscular each. The results showed that 100 % of ewes in second group revealed estrus in 33.95 ± 9.45 hours after injection and had 2-3 lambs twinning pregnancies. The ewes in the first group showed that only 80% revealed estrus in 36.51 ± 10.25 hours after injection and 83.35% of those had 1 - 2 lambs twinning pregnancies.

Key words: Fatty tail sheep, PMSG, PGF, Estrous, Lamb