Abstract
Abstract Artificial Insemination (AI) with sexed semen in buffaloes has been applied for increased calf sex ratio as well as genetic improvement. A field study was conducted to evaluate conception and calving rates following artificial insemination (AI) with sexed semen in swamp buffaloes from different agroecosystems. The study was carried out in different agroecosystems: riverside (Brebes Regency) and oil palm plantations (Pandeglang Regency). A total of 72 buffalo cows aged 5–9 years old had normal body conditions. All buffalo cows were given estrus synchronization treatment using prostaglandin hormone (PGF) twice at 11-day intervals. The sexed semen was inseminated at a fixed time, 72 hours after the second PGF injection. A conception check was done 60 days after AI using ultrasonography and rectal palpation. The parameters observed were conception and calving rate. The data were analysed descriptively. The results showed the mean conception rate and calving rate were 50.7% and 46.2%, respectively. The differences in conception (43.3 vs. 57.1%) and calving rate (40.0 vs. 52.3%) between the agroecosystems of riverside and palm oil plantations, respectively. The use of sexed semen resulted in moderate conception and calving rates. This research indicated that sexed semen can be applied in an AI program for buffaloes at farm levels.
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