The effects of natural mating and artificial insemination using cryopreserved buck semen on reproductive performance in Alpine goats
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Published:2018-12-05
Issue:4
Volume:61
Page:459-461
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ISSN:2363-9822
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Container-title:Archives Animal Breeding
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language:en
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Short-container-title:Arch. Anim. Breed.
Author:
Agossou Dehouegnon Jerry,Koluman Nazan
Abstract
Abstract. This study compared the effects of natural mating and
artificial insemination using frozen buck semen on reproductive performance
in Alpine goats. Sixty reproductive Alpine goats were grouped according to
natural mating (n=30) and artificial insemination (n=30) breeding
methods. Oestrus was synchronised in experimental goats using a vaginal
sponge impregnated with 20 mg of progestogen FGA (fluorogestone acetate) for 11 days. At the time of
sponge insertion, 150 µg of prostaglandin F2α (PGF2α) analogue was injected
intramuscularly. Forty-eight hours prior to vaginal sponge withdrawal,
500 IU equine chorionic gonadotropin (eCG) was injected into the animals. At the end of synchronisation
protocol, goats were fertilised using frozen semen or mated with a
well-performing buck (ratio: 1 male to 5 females). The pregnancy
(pregnant/synchronised goats) and mortality rates (P<0.05) were
higher (93 % vs. 70 %; 2 % vs. 4 %) in the naturally mated goats than the
artificially inseminated group. Kids' live weight at birth was similar
(3.83±0.23 and 3.15±0.11 kg) in both groups. The oestrus
synchronisation followed by natural mating achieved better reproductive
performance than the goats artificially inseminated using frozen semen.
However, the artificially inseminated animals displayed an acceptable twinning rate.
Publisher
Copernicus GmbH
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