B.O. Omontese, P.I. Rekwot, H.J. Makun, J.A. Obidi, J.S. Rwuaan, N.P. Chiezey,
Evaluation of EAZI-Breed™ CIDR® and FGA-30® Intravaginal Sponge as Estrus Synchronizing Agents in Pre-Partum Red Sokoto Does,
Veterinary Research,
Volume 3,Issue 3,
2010,
Pages 64-69,
ISSN 1993-5412,
vr.2010.64.69,
(https://makhillpublications.co/view-article.php?doi=vr.2010.64.69)
Abstract: The efficiency of EAZI-Breed™ CIDR® and
FGA-30® intravaginal sponges in synchronizing estrus was investigated
in prepartum Red Sokoto does. About 19 randomly cycling pre-partum Red Sokoto
does aged between 1.5-2 years and weighing between 12-14 kg were used for this
study. They were randomly assigned into two groups, Group A (FGA, n = 10) and
Group B (CIDR®, n = 9) for 21 days. Natural mating was performed
following progestagen withdrawal for animals detected to be on heat. Estrus
response was 20 and 55.6% in groups A and B, respectively. The time to estrus
onset following progestagen withdrawal for FGA and CIDR (Mean±S.D.) was
93.09±2.06 and 50.29±4.71 h; duration of induced estrus (0.08±0.05
and 39.99±6.05 h) while estrus cessation was (93.14±2.03 and 90.48±4.69
h) in group A and B, respectively. Interval between withdrawal of progestagen
and onset of estrus was significantly (p<0.05) longer in FGA compared to
CIDR. The duration of induced estrus period was significantly (p<0.05) longer
in CIDR treatment. Retention rate was 100% (FGA) and 88.9% (CIDR) in group A
and B, respectively. Drawstring breakage was observed in FGA sponges but absent
in CIDR devices. Also, vaginal discharge rate was higher in FGA than CIDR groups.
These results show that CIDR devices are more efficient in synchronizing estrus
in prepartum Red Sokoto does. This is because CIDR provides higher estrus response
rate, shorter time to estrus, longer duration of estrus, absence of drawstring
breakage and better ease of application. Therefore, the use of CIDR is advocated.
Keywords: CIDR;FGA-30;estrus response;goats;sponges;drawsting