title: Plasma progesterone in alpaca (Lama pacos) during pregnancy, parturition and early postpartum.
abstract: Plasma progesterone concentration during pregnancy and the early postpartum period was measured by radioimmunoassay in five alpacas (Lama pacos), of the Huacaya breed, whose pregnancy length had a mean of 344.8 +/- 4.4 days. Concentration of progesterone increased (P < 0.001) from low premating values (0.11 +/- 0.06 nmol/l) to greater values at 30 days of pregnancy (8.05 +/- 1.13 nmol/l) and remained high up to 2 months of pregnancy. A slight transitory decline was observed between 3 to 7 months. Concentration of plasma progesterone dropped markedly during the 72 h before parturition especially, at the day of parturition.
authors: Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Santiago. lraggi@abello.dic.uchile.cl
authors: L A
authors: LA
authors: Raggi
authors: G
authors: G
authors: Ferrando
authors: V H
authors: VH
authors: Parraguez
authors: V
authors: V
authors: MacNiven
authors: B
authors: B
authors: Urquieta
mesh_terms: D000818:Animals; D002161:Camelids, New World / Q000097:blood*; D005260:Female; D007743:Labor, Obstetric / Q000097:blood*; D049590:Postpartum Period / Q000097:blood*; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000097:blood*; D011374:Progesterone / Q000097:blood*; D011863:Radioimmunoassay; D013997:Time Factors
chemical_list: D011374:Progesterone