title: Plasma concentrations of 13, 14-dihydro-15-keto-prostaglandin F2alpha, progesterone and cortisol during periparturient period in yaks (Poephagus grunniens L.).
abstract: An attempt was made to determine plasma concentrations of, 13, 14-dihydro-15-keto-prostaglandin F(2alpha) (PGFM), cortisol and progesterone during periparturient period in yak. Plasma PGFM level showed an increasing trend beginning day 5 prior to parturition (0.48 +/- 0.14 ng/ml) and increased steeply thereafter to reach a peak level (17.16 +/- 1.31 ng/ml) on the day of parturition. The levels, then, declined sharply on day 1 postpartum to reach 1.20 +/- 0.40 ng/ml and thereafter declined gradually over the days to reach 0.28 +/- 0.09 ng/ml on day 20 postpartum and this level was maintained with fluctuation within narrow limits thereafter till conclusion of the blood sampling on day 90 post-calving. The plasma progesterone concentration on days 7 and 6 before parturition was high (2.10 +/- 0.10 and 2.12 +/- 0.10 ng/ml, respectively). The level then decreased gradually and abrupt fall was observed 1-2 days before parturition and became basal on day of parturition (0.24 +/- 0.04 ng/ml). This basal level was maintained till the end of the blood sampling on day 90 postpartum. Plasma cortisol level showed an increasing trend beginning day 2 prior to parturition (2.36 +/- 0.65 ng/ml) and increased steeply thereafter to reach a peak level (26.65 +/- 5.28 ng/ml) on the day of parturition. The levels, then, declined gradually over the days and touched 2.36 +/- 0.25 ng/ml on day 3 postpartum and this level was maintained with fluctuation within narrow limits thereafter till day 7 post-calving.
authors.affiliation: National Research Center on Yak, Dirang, Arunachal Pradesh, India. msarkar24@gmail.com
authors.forename: M
authors.initials: M
authors.lastname: Sarkar
authors.forename: B C
authors.initials: BC
authors.lastname: Das
authors.forename: B K
authors.initials: BK
authors.lastname: Dutta Borah
authors.forename: B S
authors.initials: BS
authors.lastname: Prakash
mesh_terms: D000818:Animals; D002417:Cattle / Q000097:blood*; D015237:Dinoprost / Q000031:analogs & derivatives* / Q000097:blood; D005260:Female; D006854:Hydrocortisone / Q000097:blood*; D007124:Immunoenzyme Techniques / Q000662:veterinary; D036801:Parturition / Q000502:physiology*; D049590:Postpartum Period / Q000097:blood; D011247:Pregnancy; D011374:Progesterone / Q000097:blood*
chemical_list: C008228:15-keto-13,14-dihydroprostaglandin F2alpha; D011374:Progesterone; D015237:Dinoprost; D006854:Hydrocortisone