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OJVRTM
Online Journal of
Veterinary Research©
Volume 24(9): 554-557, 2020.
Effect of melatonin with or without progesterone
implants on serum reproduction hormones and anestrus in lactating buffalo.
Talib
Musa Al-Hamedawi and Saad Akram Hatif.
College of
Veterinary Medicine, University of Baghdad, Baghdad-Iraq.
ABSTRACT
Al-Hamedawi TM, Hatif SA., Effect of melatonin with or without
progesterone implants on serum reproduction hormones and anestrus in lactating
buffalo, Onl J Vet Res., 24(9): 554-557,
2020. We describe
effect of melatonin with or without progesterone controlled internal drug release devices
(CIDR) implant on serum estrogen, progesterone, prolactin, melatonin and
anestrus in lactating buffalos. We used 3 groups of ten 3 to 6 year old
buffaloes each with ovarian inactivity at 60-90 days postpartum. The animals
were given five 90mg melatonin implants subcutaneously over 30 days with or
without 1.38gm medroxy acetate progesterone at day 20
for 10 days. Controls were not treated. Jugular
blood was taken for serum estrogen, progesterone, prolactin and melatonin at
days 0, 15 and 37 of treatment determined by ELISA. In buffalo given only
melatonin, serum estrogen increased (P < 0.05) ~69% by day 37 but in those
also given progesterone, estrogen increased ~39% but by day 15, and ~72% by day
30. We found similar results with serum progesterone and melatonin but no
effect on serum prolactin levels. These finding suggest that melatonin with or
without progesterone CIDR implants may improve reproductive outcomes in
lactating anestrus buffalos.
Key words:
Buffaloes, Ovarian inactivity, Melatonin, CIDR, Prolactin.
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