Endocrine changes after mating in pregnant and non-pregnant llamas and alpacas.

@article{Aba1995EndocrineCA,
  title={Endocrine changes after mating in pregnant and non-pregnant llamas and alpacas.},
  author={Marcelo Alfredo Aba and Mats Forsberg and Hans Kindahl and J B Sumar and L E Edqvist},
  journal={Acta veterinaria Scandinavica},
  year={1995},
  volume={36 4},
  pages={489-98}
}
Plasma concentrations of oestradiol-17 beta, progesterone, 15-keto-dihydro-PGF2 alpha and luteinizing hormone (LH) were monitored in llamas and alpacas after mating with an intact male. Concentrations of LH and PGF2 alpha metabolite were high immediately after copulation. Ovulation occurred in 92% of the animals. The first significant increases in progesterone were recorded on day 4 after mating. In non-pregnant animals the lifespan of the corpus luteum was estimated to be 8-9 days. Luteolysis… CONTINUE READING