UTERINE INVOLUTION AND FERTILITY IN CROSSBRED COWS TREATED WITH ECBOLICS DURING PUERPERIUM
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Date
2016
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COLLEGE OF VETERINARY AND ANIMAL SCIENCE-MANNUTHY,THRISSUR
Abstract
The study was undertaken with the objective to assess the efficacy of ecbolic
agents on uterine involution, resumption of ovarian cyclicity and fertility in post
partum crossbred cows. A total of 36 apparently healthy cows, immediately after
normal calving, were randomly allotted to four groups of nine animals each and were
administered with oxytocin - 50 IU (group I); cloprostenol sodium - 500 μg (group
II) and methylergometrine maleate – 5mg (group III) intra muscularly within two
hours of calving. Animals in group IV were left untreated (control). Cows were
subjected to detailed clinico-gynaecological and ultrasonographic evaluation at day
10 post-partum and at five day interval till day 40 or complete uterine involution, for
assessing uterine involution and resumption of ovarian cyclicity. Blood samples were
collected on day 10, 20, 30 and 40 post-partum, for serum progesterone estimation.
Administration of ecbolics significantly reduced occurrence of RFM and mean
number of days required for complete uterine involution as compared with untreated
group. Uterine wall thickness among different groups significantly reduced from day
10 to 30 post-partum post-partum. By day 40 post-partum, all the animals in the
treatment groups and 88.89 per cent of animals in control group completed uterine
involution. The mean number of days required for complete uterine involution in group I to IV were 31.67 ± 1.67, 28.33 ± 1.67, 28.89 ± 1.62 and 32.22 ± 1.21
respectively. Calving to first observed estrus interval, calving to first AI interval,
calving to conception interval were comparatively shorter in group II, although not
significantly different from other groups.
Conception rate in group I to IV after first service was 22.22, 44.44, 22.22 and
11.11 per cent respectively and overall conception rate (up to three AI) was 55.56,
77.78, 55.56 and 55.56 per cent, respectively, which also indicated better result in
PGF2 treated group.
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