Citation:
Goel, A.K. & Agrawal, K.P., 2003. Ovulation in Jakhrana goats native to tropical climates. Small Ruminant Research, 50, p.209 - 212.
Abstract:
Ovulation pattern (rate and time) of 35 adult (age: 2–3.5 years, average body weight: 25–36kg) normal cycling (nulliparous and parous) Jakhrana goats native to the semi-arid areas of India was investigated. Randomly selected goats (seven per group) were laparotomized 20, 28, 36, 48 and 54h following natural oestrus and were observed for the onset of ovulation, its sequence and rate. None of the goat ovulated 20h post-onset of natural oestrus. Ovulation occurred 28h post-onset of oestrus (towards the end of the oestrous period) in Jakhrana goats and reached to its peak at 36h of post-oestrus. No further increase in ovulation rate 48 to 54h post-oestrus was observed in this breed. Mean ovulation rate was 1.33±0.10 (range 1–2). Study concluded that Jakhrana goat ovulated towards the end of oestrus and ovulation was over 12h after the end of oestrous period. Ovulation rate in Jakhrana goats followed a similar trend to other large sized goat breeds of Indian origin.
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