SERUM OESTRADIOL -17â AND PROGESTERONE PROFILE IN HAMPSHIRE GILTS FOLLOWING SYNCHRONIZATION OF OESTRUS BY PGF 2∠ANALOGUES

Abstract

Following synchronization of oestrus by PGF2-∠analogue, serum oestradiol-17â and
progesterone concentration during different stages of gestation were carried out in a total 18
pubertal Hampshire gilts reared in the Base Pig Breeding Farm, Department of Animal
Husbandry and Veterinary, Government of Assam, Khanapara,Guwahati. The pubertal gilts
were divided in to three groups viz. Group I and II as treated and Group III as control. Gilts
of Group I received 5ml Iliren during luteal phase of cycle whereas gilts of Group II received Serum oestradiol -17â and progesterone profile in Hampshire gilts
two injection of 5ml Iliren at 11 days apart. The mean serum oestradiol-17â and
progesterone showed significantly (P<0.01) higher and lower concentration respectively in all
gilts of three experimental groups on the day of oestrus as compared to the concentration
obtained during different days of gestation. During gestation, a significantly lower level of
mean serum oestradiol-17â and higher level of progesterone concentration was recorded
whereas on the day of farrowing, the concentration again significantly increased and
decreased for serum oestradiol-17â and progesterone respectively in all the gilts of treated
and control group.
Key Words : Oestradiol-17â, Progesterone, PGF2-∠analogue, Gestation, Synchronization.