Maybe the bull was good early and got hurt or sick later in the breeding season. In general, research reports published through the late s have shown much greater negative effects of limited post weaning growth on age of puberty and subsequent pregnancy, whereas more recent studies indicate less of a negative impact of delayed puberty only my health sex in hindi in Hereford pregnancy response.
It tested on the high side of acceptable level of nitrates to be fed to pregnant beef cows. Did you notice any other bulls in your pasture? If you observed very few cows cycling towards the end of the breeding season, then observed cows cycling after the breeding season ended, may indicate early abortions.
This will cause an increase in the postpartum interval and result in more opens young females.
It has been documented in beef cows that uterine involution is not completed by 20 days post-calving, but the uterus is back to its non-pregnant size by 30 days post-calving. While selection intensity would have increased with the reduction in calving age of heifers, genetic progress would take time due to the long generation interval in cattle.
We just preg checked the cows in our herd and we felt we had too many open cows. Page last reviewed: 9 December Next review due: 9 December For young bulls, to ; older bulls to Several factors likely contribute to this change over time.
Indeed, the inability of heifers to attain puberty prior to breeding may not be as problematic as heifers reaching puberty before weaning. Did you run 2 yearling bulls in one breeding pasture? Answer from This will cause an increase in the postpartum interval and result in more opens young females.
Did you have any breeding pastures that had only one bull for the entire breeding season? Subscribe to BeefWatch.
You can "jump start" estrous cycles with progestins and gonadotropins GnRH , but this will only happen in females that are close to begin cycling. Calf first-calf-females in a body condition score of 6 on 1 to 9 scale. Skip to main content. Again, minerals are important and it sounds like you have this area covered.
While selection intensity would have increased with the reduction in calving age of heifers, genetic progress would take time due to the long generation interval in cattle.