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Open Access
Copyright: The authors. This article is an open access
article licensed under the terms of the Creative Commons Attribution License
(http://creativecommons.org/licenses/by/2.0) which permits unrestricted use,
distribution and reproduction in any medium, provided the work is properly
cited.
Original Research
2.
Comparative efficacy of different CIDR protocols
for the treatment of postpartum anestrous in Iraqi
buffaloes -
O I
Azawi, M D Ali, S A Oday, A Salih, A S Al-Hadad, S
J Mouayad and A S AbdulHussien
Vet World. 2012; 5(4): 201-205
doi:
10.5455/vetworld.201 2.201-205
Abstract
The aim of this study was to evaluate and compare
the efficacy of different CIDR protocols including
some hormonal preparations for the treatment of
postpartum anestrous of Iraqi northern buffaloes.
The present study was conducted on 70 anestrous
buffaloes suffering from postpartum ovarian
inactivity. Buffaloes were randomly assigned to
three treatment groups. Buffaloes in Treatment 1
(n=20) injected on day 0 of the experiment, GnRH
250 μg and a CIDR was placed in the anterior
vagina. On day 7, they were injected with 25 mg of
PGF2α and on the following day (day 8) the CIDR
were removed. On day 9 a second dose of GnRH (250
μg) was injected. Buffaloes in Treatment 2 (n=20)
received on day 0 GnRH (250 μg) and a CIDR were
placed in the anterior vagina. On day 7, CIDR were
removed and injected with GnRH (250 μg). Treatment
3 (n=20) on day 0 a CIDR were placed in the
anterior vagina. On day 6, they were injected with
1000 IU of eCG. CIDR were removed on day 7 and
injected with GnRH (250 μg). A control group
(n=10) received no treatments. Results showed that
in treatment 1 (GnRH+CIDR—8days—7 PGF2α+9 GnRH),
15 out of 20 buffaloes received treatment
exhibited estrus within 69.4 ± 8.4 h after CIDR
removal. The estrus induction rate was 75%. Total
number of buffaloes became pregnant was 4 (26.7%).
In treatment 2 (GnRH+CIDR—7 days—GnRH), 65% of the
buffaloes received treatment exhibited estrus
within 77.8 ± 5.6 h after CIDR removal. Total
number of buffaloes became pregnant was 4 (26.7%).
In treatment 3 (CIDR—7 days— 6 eCG+7 GnRH), 100%
of the buffaloes received treatment exhibited
estrus within 78.3 ± 11.8 h after CIDR removal. In
conclusion, our results indicate that the addition
of GnRH and eCG to a progesterone-based CIDR
protocol substantially improves the estrus
induction and pregnancy rates in postpartum
anestrous buffaloes.
Keywords: Buffalo;
Anestrous; CIDR; GnRH; eCG; PGF2α.
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