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Plasma progesterone in alpaca (Lama pacos) during pregnancy, parturition and early postpartum

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1999-01-29
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Raggi Saini, Luis
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Plasma progesterone in alpaca (Lama pacos) during pregnancy, parturition and early postpartum
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Author
  • Raggi Saini, Luis;
  • Ferrando, Germán;
  • Parraguez Gamboa, Víctor;
  • MacNiven, Verónica;
  • Urquieta, Bessie;
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.
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Artículo de Publicación ISI
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This work was supported by grants FONDECYT 1940292 and Universidad de Chile—Cia. Minera Disputada de Las Condes—Criadero El Litral.
Identifier
URI: https://repositorio.uchile.cl/handle/2250/122482
DOI: DOI: 10.1016/S0378-4320(98)00156-0
ISSN: 0378-4320
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ANIMAL REPRODUCTION SCIENCE Volume: 54 Issue: 4 Pages: 245-249 Published: JAN 29 1999
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