Comparison of the reproductive performance of the Kacang goats on three synchronization methods

Objective: This study was conducted to investigate the effect of different methods synchronized on the reproductive performance of the Kacang Goats, estrus response, pregnancy rate, kidding rate, twins and litter size. Methods: Forty-five dam of Kacang goats were divided into three groups (n= 15); 1) goats were injected 1 ml PGF 2 α (Lutalyse TM ) on day 1st and after days 11nd. 2) goats have injected 1 ml of GnRH (Fertagyl TM ) on day 1st and the 7th day was injected 1 ml of PGF 2 α . 3 ) goats have received 1 ml progesterone (Progesterone-C) on the first day and the 7th day was injected with 1 ml PGF 2 α . Estrus observations were made on the 12th day for the first group, 8th day for the second group and 8th day for the third group. This data analyzed with a t-test. The effects were considered to be significant when the level of probability was less than 5%. Results: The results showed that visualization estrus (goods), t he percentage of estrus (100%), the onset of estrus (51.6 h- 52.6 h), the percentage of pregnancy (100%), birth percentage of kids (100%) Kacang goats better on the use of double PGF 2 α and a combination of GnRH and PGF 2 α than the use combination progesterone with PGF 2 α but the duration of estrus, twins and the kidding rate no difference between treatments. Conclusions: Synchronization method using a combination of GnRH with PGF 2 α and double PGF 2 α produces estrus responses, pregnancy rate and birth rates that are higher than the combination Progesterone with PGF 2 α synchronization method.