Estrus synchronization has ascend the popularity of animal husbandry field and gained significant recognition in animal breeding procedure. The advantages of estrus synchronization were increased goat heat and uniformed insemination time. Conversely, the commercial estrus synchronization procedure used (Controlled Internal Drug Release; CIDR), is time-consuming and may lead to abortion. The recent study using herbs for estrus synchronization was not prominent in our country, as the sources of commercial herbs used were not available locally thus increasing the cost. The objectives of the present study were 1) to determined efficacy of estrus synchronization using commercial and modified herbs and 2) to improve the pregnancy rate of goat by controlling estrus cycle. The female were assigned to two groups, (A) commercial herbs and (B) modified herbs. Female were fed with commercial herbs, modified herbs for group (A) and (B) respectively. The goats were fed for three consecutive day and the heat detection for 10 days were evaluated. The goats were then been mate by natural mating or (artificial insemination; AI). The pregnancy detection in goats was performed using ultrasound for accurate diagnosis. Results showed that the estrus detection in modified herb was highly significant in modified herbs compared to Ovifertin 46.67% vs 35%, respectively. Modified herbs continuously gave higher values compared to Ovifertin in all parameters.
Moreover, the percentage of pregnancy rate for modified was significantly higher with 100% pregnancy compared to Ovifertin with 75%. The pregnancy detection by using ultrasound was highly reliable and accurate. The experiment also revealed that the average of weight gain; AWG for both Ovifertin and modified were significant after pregnancy detection compared to before pregnancy. The development of fetus in goats influenced the average of weight gain in goats. In conclusion, modified herbs had proved to be a reliable alternative for Ovifertin in estrus synchronization.