Analysis of Reproductive Indicators in Dairy Cows Inseminated with HeiferPlus Frozen Semen
2023
Stelian Sertu
More and more dairy cows are experiencing infertility problems caused by both the quality of the semen after thawing and the timing of artificial insemination. The present paper analyses reproductive indicators in a population of dairy cows that were artificially inseminated with HeifferPlus semen. This semen, according to those who sell it, increases the percentage of fecundity by 5-15% and the sex ratio is 65-85% in favour of the calf with the predetermined desired sex. The work was carried out at the Balotesti Bovine Development Research Institute, on a herd of 50 heads, Romanian Black Spotted cows, owned by the institute. The analysed data capture the farm's activity since 2020. The reproduction data were taken from the TAURINE.EXE farm program. The monitored reproductive indicators were: %fecundity, services per conception, service period interval, %fertility and sex ratio. From the analysed data the proportion of females obtained was 57.5%.
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