| Author(s) | Mohamed J. Al-Hassan |
| Affiliation | Department of Animal Production College of Agriculture, King Saud University P.O. Box 2460, Riyadh 11451, Saudi Arabia |
| Title | Assessment of the Reproductive Performance of a Holstein Dairy Herd as affected by the Efficiency of the Inseminator |
| Source | Journal of King Saud University. Agricultural Sciences. Volume 15, No 2. (2003/1423) |
| Abstract | Abstract. A commercial dairy farm in the central region of Saudi Arabia was evaluated for overall reproductive performance and inseminator’s effect. Average days to first service and average days open were 70 and 105, respectively. Heat detection rate was low (61%) and first service conception rate average was (51%), while second and third service conception rates were precipitously lower, 38 and 14% respectively. Overall conception rate was 74% and an average service/conception ratio was 2.5. There were no significant inseminator effect regarding interestrous interval, pregnancy rate and number of services per conception. However, pregnant cow's average days open was significantly higher for cows inseminated by one inseminator (86.76 days) than cows inseminated by second inseminator (77.41 days). These results indicate that the reproductive performance of the herd as a whole can be improved by increasing heat detection rate. |
