Abstract
Progesterone was administered to Merino ewes in February (early breeding season) and May (mid-breeding season) for 2 weeks. The period from the final progesterone injection to the onset of oestrus, the duration of oestrus, and fertility after hand mating were observed. The approximate time of ovulation was also determined in the February experiment. The duration of oestrus was 10 to 50 hr; ovulation took place near the end of oestrus. The period from the last injection to the onset of oestrus, and the fertility of the ewes were influenced by dose, interval between consecutive progesterone injections, the time of day that the injections
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
