3Professor and Head, Department of Clinics, Veterinary College and Research Institute, Tamil Nadu Veterinary and Animal Sciences University (TANUVAS), Namakkal-637002, (Tamil Nadu)
Department of Animal Reproduction Gynaecology and Obstetrics, Veterinary College and Research Institute, Tamil Nadu Veterinary and Animal Sciences University (TANUVAS), Namakkal-637002, Tamil Nadu
Online published on 16 October, 2015.
Sixteen cows treated for retained fetal membranes (RFM) following parturition were selected at 35–50 days postpartum and randomly and equally divided into two groups (Group I and II). All cows were orally supplemented daily with mineral mixture continuously for 15 days. Group I cows were treated with ovsynch protocol between 50th and 65th days post-partum. Oestrus response following ovsynch treatment in Group I cows was 100 percent, whereas in group II (control), it was 62.50 percent. The mean interval to onset of induced oestrus in group I and II was 49.04±3.17 hours and 30.50±4.04 days respectively. The mean duration of induced oestrus was 29.38±0.74 and 28.35±0.69 hours in group I and II respectively. The lowest percentage of intense oestrus intensity was observed in group II (12.50 percent). The higher percentage of intermediate intensity was noted in group I (37.50 percent). The percentage of ovulatory response was 100.00 and 50.00 percent in group I and II, respectively. The first service, second service and overall conception rates were 25.00, 50.00 and 75.00 and 37.50, 25.00 and 50.00 percent in group I and II, respectively. It was concluded that mineral supplementation and ovsynch protocol improved conception rate in RFM affected cows.
Conception rate, cow, oestrus, ovsynch, retained fetal membrane
