Plasma concentrations of 15-ketodihydro-PGFf(2α), progesterone, oestrone sulphate, oestradiol-17β and cortisol during late gestation, parturition and the early post partum period in llamas and alpacas

M. A. Aba, J. Sumar, H. Kindahl, M. Forsberg, L. E. Edqvist

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

18 Citas (Scopus)

Resumen

Plasma concentrations of 15-ketodihydroprostaglandin (PG) F(2α), progesterone, oestrone sulphate, oestradiol-17β and cortisol during late gestation, parturition and the early post-partum period were measured in six llamas and five alpacas. During the last 100 days of pregnancy, 15-ketodihydro-PGF(2α) concentrations increased steadily until the day of parturition when a massive release was detected (P < 0.01) concomitant with a decrease in progesterone concentrations (P < 0.01). The highest PGF(2α) metabolite concentrations (159 ± 35 nmol l-1 and 92 ± 29 nmol l-1 in llamas and alpacas respectively) were detected in the sample collected during the morning on the day of parturition. Basal concentrations were registered by day 3 after delivery. Plasma concentrations of oestrone sulphate started to increase 80 days before parturition and reached peak concentrations immediately before parturition (15 ± 3 nmol l-1 in llamas and 18 ± 5 nmol l-1 in alpacas). Oestrone sulphate concentrations dropped sharply (P < 0.01) on the day of parturition in llamas and one day later in alpacas, whereupon they remained relatively unchanged until at least 20 days postpartum. Oestradiol-17β concentrations were higher than 180 pmol l-1 during the last 45 days of pregnancy, began to decrease on the day of parturition and reached very low concentrations within the following two days. High oestradiol-17β concentrations were registered 7 days postpartum in all alpacas (P < 0.05) and within 10 days of parturition in five of six llamas (P < 0.01). No significant cortisol peaks were observed around parturition, but mean concentrations were increased in both species.
Idioma originalInglés estadounidense
Páginas (desde-hasta)111-121
Número de páginas11
PublicaciónAnimal Reproduction Science
DOI
EstadoPublicada - 27 feb 1998

Huella

Profundice en los temas de investigación de 'Plasma concentrations of 15-ketodihydro-PGFf(2α), progesterone, oestrone sulphate, oestradiol-17β and cortisol during late gestation, parturition and the early post partum period in llamas and alpacas'. En conjunto forman una huella única.

Citar esto