الكاتب: Multiple References

The study was carried out on 1090 Polish Black and White breed cows. Rectal examinations accompanied by blood plasma progesterone determinations performed twice in a 10-d interval diagnosed 178 ovarian afunction (OA) cases, which were consequently divided into 5 groups according to treatment regimen: controls; progesterone (PRID); massage; Lugol’s solution; GnRH. Oestrus, first insemination and total pregnancy rates, artificial insemination (AI) index, and service period length were determined following treatment. The service period in all, except GnRH, treated groups, was statistically shorter (P ≤ 0.05) than in control. The overall results showed that PRID treatment of OA affected cows was the most effective method. Other regimens such as Lugol’s solution and uterine as well as ovarian massage could be considered.