INDUCTION OF ESTRUS IN AN ANESTRUS CROSSBRED HEIFER USING INTRAVAGINAL PROGESTERONE DEVICE
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Date
2017-08
Journal Title
Journal ISSN
Volume Title
Publisher
TANUVAS
Abstract
Anestrum is one of the major causes of infertility in bovines. A four year
old Holstein Friesian crossbred heifer was presented to the Teaching Veterinary
Clinical Complex, Veterinary College and Research Institute, Tirunelveli
with a history of not showing estrus signs for the past seven months. Rectal
examination revealed normal uterus with inactive ovaries was palpable.
Transrectal ultrasonography of the right ovary revealed a follicle measured
about 8.5 mm in diameter, on the contra lateral ovary no follicle could be
detected and corpus luteum could not be detected on both ovaries.Nine days
later animal was re-examined and found to have a follicle on the right ovary
measured 8.6 mm in diameter. Hence the condition was diagnosed as Anestrus
and treated with Controlled Internal Drug Releasing Device (Progesterone
device), which was inserted in the vagina and administered estradiol benzoate 2
mg total dose intramuscularly. Eight days later CIDR was removed and PGF2α
was administered intramuscularly. Artificial insemination was carried out 48
and 72 hours after CIDR removal. It could be concluded as for Anestrus where a
single deviated dominant follicle persists for longer duration Progesterone with
estradiol therapy may be used to induce estrus.
Description
TNV_CCA_Y2017_3-4Aug.Pg255-256
Keywords
Veterinary Science - Conference Abstract