PREGNANCY SUCCESS OF BEEF CATTLE IN DRY SEASON INSEMINATED WITH DIFFERENT FROZEN SEMEN IN KARANGPLOSO SUBDISTRICT, MALANG DISTRICT Hilma Sajida Chulwa Hanin1) and Achadiah Rachmawati2)
Brawijaya University
Abstract
Domestic beef demand is increasing along with public awareness of the importance of animal protein. This is not matched by the availability of beef as a result of the decreasing beef cattle population in Indonesia. Increasing population and genetic quality can be done by applying livestock reproductive biotechnology, Artificial Insemination. The success of IB in Indonesia is influenced by environmental factors, such as the dry season. Generally, pregnancy rates of cattle or female parents in the dry season are lower than in the rainy season, because it is related to the availability of animal feed. The application of IB to beef cattle in Karangploso Subdistrict, Malang District, resulted in high pregnancy rates, but there is no data on the results of IB based on season. The success of IB can be determined based on the value of service per conception (S/C), non-return rate (NRR) and conception rate (CR). The purpose of this study was to determine and assess the success of pregnancy in cows based on S/C, NRR and CR values in Karangploso District, Malang Regency. The research materials were 216 beef cows in Karangploso Subdistrict, Malang Regency inseminated with frozen Simmental semen as many as 108 cows and 108 other cows inseminated with frozen Limousin semen. The research method used was a case study by collecting IB recording data belonging to inseminators in the field which was then analyzed to draw conclusions whose observation variables were measurable and could be denoted by numbers. The research variables are S/C, NRR, and CR values. The results of this study were beef cattle inseminated with frozen semen from Limousin cattle got S/C value = 1.32- NRR 1 = 74%- NRR 2 = 75%- and CR = 74%, while beef cattle inseminated with frozen semen from Simmental cattle got S/C value = 1.43- NRR 1 = 64%- NRR 2 = 79% and CR = 64%. The conclusion of this study is that the use of frozen semen from Limousin cattle inseminated in beef cattle in Karangploso Subdistrict, Malang District has a higher pregnancy rate than frozen semen from Simmental cattle in the dry season as seen from the S/C, NRR, and CR scores.
Keywords: artificial insemination, service per conception, non-return rate, and conception rate.
