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R esearch
(Published online:
12-03-2015)
10.
Fertility response in postpartum anoestrus
buffaloes (Bubalus bubalis) using modified Ovsynch based
timed insemination protocols -
K. K. Gupta, S. N.
Shukla, P. Inwati and O. P. Shrivastava
Veterinary World, 8(3): 316-319
doi:
10.14202/vetworld.2015.316-319
K. K.
Gupta:
Department of Veterinary Gynaecology and Obstetrics, College of
Veterinary Science & Animal Husbandry, Nanaji Deshmukh Veterinary
Science University, Jabalpur, Madhya Pradesh, India; kamalguptavet@gmail.com
S. N.
Shukla:
Department of Veterinary Gynaecology and Obstetrics, College of
Veterinary Science & Animal Husbandry, Nanaji Deshmukh Veterinary
Science University, Jabalpur, Madhya Pradesh, India; snshukla2@gmail.com
P.
Inwati:
Department of Veterinary Gynaecology and Obstetrics, College of
Veterinary Science & Animal Husbandry, Nanaji Deshmukh Veterinary
Science University, Jabalpur, Madhya Pradesh, India; inwativet@gmail.com
O. P.
Shrivastava: Department of Veterinary Gynaecology and
Obstetrics, College of Veterinary Science & Animal Husbandry,
Nanaji Deshmukh Veterinary Science University, Jabalpur, Madhya
Pradesh, India;
vetopshri@gmail.com
Received: 29-10-2014, Revised: 20-01-2015, Accepted: 28-01-2015,
Published online: 12-03-2015
Corresponding author:
S. N. Shukla, e-mail: snshukla2@gmail.com
Citation:
Gupta KK, Shukla SN,
Inwati P, Shrivastava OP (2015) Fertility response in postpartum
anoestrus buffaloes (Bubalus bubalis) using modified
Ovsynch based timed insemination protocols, Veterinary World
8(3):316-319.
Abstract
Background and Aim: Suboestrus constitutes the largest factor
responsible for poor reproductive efficiency in buffaloes.
Therefore, oestrus synchronization (OS) and fixed-time artificial
insemination (AI) is considered an alternative approach to enhance
reproductive efficiency in buffaloes. Thus, the present study was
carried out to study the efficacy of modified Ovsynch protocol
with fixed time insemination in post-partum anoestrus buffaloes.
Materials and Methods: Total 50 post-partum anoestrus dairy
buffaloes were selected and randomly divided into 5 Groups, each
comprising ten animals (n=10). Animals of Group I received
buserelin acetate 10 μg(GnRH) at day 0 and 9, and prostaglandin
F2α (PGF 2α) at day 7; in Group II similar to
Group I except double dose of Gn RH (20 μg) at day 0; in Group
III, similar to Group I plus additional administration of insulin
on day 0, 1 and 2; in Group IV, similar to Group II plus
additional administration of insulin on day 0,1 and 2; in Group V
similar to Group I except replacement of first Gn RH with insulin
on day 0,1 and 2. Animal of all groups were inseminated at fixed
time using frozen semen at 60 h and 72 h after PGF2α
administration and confirmed for pregnancy at day 60
post-insemination.
Results: The results revealed satisfactory
and comparable synchronization of oestrus (60-80%) and conception
rate (20-40%) among the various treatment groups in the present
study. The better synchronization was observed in modified
protocols. However, non-significantly higher conception rate was
recorded in modified Ovsynch protocol (40% each in Group II-V) as
compared to 20% in Group-I (p>0.05).
Conclusion: In this study comparatively higher OS and
conception following insulin modified Ovsynch based timed AI
protocols in post-partum anoestrus buffaloes was found
satisfactory and comparable.
Keywords: anoestrus buffaloes, fertility,
insulin, ovsynch synchronization, timed artificial insemination.
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