EFFECT OF SUPPLEMENTATION OF SAFFLOWER OIL IN OVSYNCH ON FERTILITY OF POSTPARTUM BIDRI GOATS
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Date
2020-01
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KARNATAKA VETERINARY, ANIMAL AND FOISHERIE'S SCIENCES UNIVERSITY, BIDAR
Abstract
The study was conducted to find out the effect of safflower oil supplementation
combined with ovsynch estrus synchronization protocol in postpartum Bidri goats.
Twenty four full term pregnant goats were selected and divided into 3 groups (n=8).
From day of kidding, all the 3 groups were fed with concentrate feed (250 gm/day/doe)
for 30 days. Group one (T0) was kept control and maintained on concentrate feed without
additional supplementation. Treatment groups – Group 2 (T1) and Group 3 (T2) received
safflower oil supplementation at the rate of 30 gm and 50 gm/day/doe respectively, for 30
days. Ovsynch (G-P-G) estrous synchronization protocol was carried in all 3 groups from
day 16 postpartum. All animals received a I/M inj of GnRH @ 4 mcg on day 16 post
kidding and I/M inj of PGF2α @ 250 mg on day 23; Upon observing of estrus signs, does
were allowed for natural mating. All the animals received second I/M inj of GnRH @ 4
mcg on day 25 (48 hours after PGF2α injection). Estrus induction rates for all the 3 groups
were 100 %. Conception rates for T0, T1 and T2 were 50%, 75% and 100% respectively.
Mean ± SE values of onset of estrus for Group T0, T1 and T2 were found to be
62.25±1.66, 49.625±1.48 and 41.25 ± 1.71 hr respectively. Mean ± SE values of duration
of estrus for Group T0, T1 and T2 were found to be 38.25±1.21, 46.125±0.89 and
42.75±3.50 hr respectively. Serum samples were estimated for progesterone, glucose and
cholesterol levels. Based on conception rate, it was noticed that safflower oil
supplementation augmented conception rates in both Group 2 (T1) and Group 3 (T2). It
was concluded that Group 3, which received 50 gram safflower oil + Ovsynch had better
efficiency in increasing conception rate of postpartum Bidri does.