Abstract
Background: Productivity of existing cattles in Indonesia is necessarily to be increase to balance meat consumption in this country. Determination of offspring of certain sex can be obtained from Percoll gradient density centrifugation.The purpose of this research was to elucidate the proportion of male calves that can result from artificial insemination using single and double doses of sexed semen in Ongole crossbred cows. Methods: The sexed semen samples were obtained through Percoll gradient density centrifugation performed by the Artificial Insemination Center. The artificial insemination method adopted here was deep insemination. As much as 10 ml of BIO ATP® (Rheinvet) was injected in each cow before immediately insemination. Further, as much as 3 kg/day of additional feed was given over three days after insemination, with a protein level of about 12%. Result: Our results showed the proportion of Y-bearing sperm among non-sexed semen was 52.77% and among sexed semen, was 80.79%. Further, 54.17% of the non-sexed semen, 42.11% of the single-dose sexed semen and 78.95% of the double-dose sexed semen treatments yielded male calves.
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