Please use this identifier to cite or link to this item: http://repositorio.cualtos.udg.mx:8080/jspui/handle/123456789/958
Title: The Effect of Naloxone on Blood Progesterone of Creole Mexican Ewes with Induced Short Luteal Phase During the Anoestrus Season
Authors: Fuentes Hernández, Víctor Octavio
Fuentes, C.P.I.
Bernal Canseco, A.
García De La Pena, C.R.
Keywords: naxalone luteal phase
ewe
anestrus
GnRH
HCL
modulators of production
Issue Date: 2009
Publisher: Medwell Publications
Citation: Fuentes Hernández V.O., Fuentes C.P.I., Canseco Bernal A. and Garcia De La Pena C.R. (2009). The Effect of Naloxone on Blood Progesterone of Creole Mexican Ewes with Induced Short Luteal Phase During the Anoestrus Season. Journal of Animal and Veterinary Advances, 8: 1230-1232.
Series/Report no.: Journal of Animal and Veterinary Advances.;Vol. 8, núm. 6.
Abstract: Abstract: From an extensive sheep flock, 20 creole mexican ewes were selected, age fluctuated between 2 and 6 years, allocated at random in groups of 10. Group 1 (n = 10) received a subcutaneous implant with 15 mg naloxone HCL. Group 2 (n = 10) was sham treated on the may 30-2008. Total 7 days after receiving the implant they were treated with GnRH (250 ng iv at 2 h interval for 24 h) and one final GnRH iv injection of 125 μg. Blood samples were collected at 12 h intervals since, the beginning of the experiment and continued until 15 days after the last injection of GnRH. In 2 of the control ewes it was observed that progesterone concentrations increased since 36 h after the first dose of GnRH until a maximal of 3 ng mL-1 of plasma progesterone concentration was reached on day 7 and the remaining 8 control ewes showed short luteal phases with a maximum of 1 ng mL-1 of plasma progesterone. In ewes treated with naloxone 3 showed short luteal phases and 7 naloxone treated ewes had plasma progesterone concentrations similar to control ewes with normal luteal phases. There was a significant effect of treatment (p<0.0019) between control and naloxone treated ewes. This results show that endogenous opioids are important modulators of reproduction in the ewe.
Description: Artículo
URI: http://medwelljournals.com/abstract/?doi=javaa.2009.1230.1232
http://repositorio.cualtos.udg.mx:8080/jspui/handle/123456789/958
ISSN: 1680-5593
Appears in Collections:3104 Artículos



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