Por favor, use este identificador para citar o enlazar este ítem:
https://hdl.handle.net/20.500.12955/2416
Título : | Pregnancy and birth rate outcomes in alpacas (Vicugna pacos) inseminated with frozen semen using two commercial extenders |
Autor : | Contreras Huamani, Mijaíl Olaguivel Flores, C. A. Guillén Palomino, Crissthel Yverlin Carretero, M. I. Fumuso, F. G. Laines Arcce, I. M. |
Fecha de publicación : | 6-dic-2023 |
Resumen : | The aim of this study was to evaluate alpaca pregnancy outcomes and birth rates of females inseminated with frozen semen using two commercial extenders. A total of 18 ejaculates from 8 adult alpaca males were obtained with artificial vagina, and macroscopic and microscopic semen characteristics were assessed. Afterwards, samples were divided into two aliquots, diluted with Biladyl® B or AndroMed®, and cooled for 2 h at 5°C. At that moment, sperm motility was evaluated, and samples were frozen through a gradual descent of temperature using a liquid nitrogen tank. To analyse frozen sperm quality, samples were thawed at 38°C for 30 s. Even though a significant decrease in sperm motility and viability was detected when thawed (p < .05), no superiority was found between the two commercial extenders (Biladyl® B vs. AndroMed®). A total of 36 alpaca females were artificially inseminated (AI) between 30 and 34 h post-injection of a GnRH analogue, administered when a growing dominant follicle was detected through transrectal palpation and ultrasonography. Obtained pregnancy rates were similar between Biladyl® B (33.3%, 6/18) and AndroMed® (22.2%, 4/18). No significant differences were detected in birth rates between the two tested extenders, obtaining 4 and 3 births for Biladyl® and AndroMed®, respectively. In conclusion, alpaca pregnancies and alive offspring can be obtained through AI with frozen semen at similar efficiency rates using commercial diluents, Biladyl® B or AndroMed®. |
Palabras clave : | Alpaca AndroMed® Biladyl® B Birth rates Pregnancy Semen cryopreservation |
metadata.dc.subject.agrovoc: | Alpaca Alpacas Birth rate Tasa de natalidad Pregnancy Gestación Semen preservation Conservación del semen |
Editorial : | John Wiley & Sons Inc. |
Citación : | Huamani, M. C.; Olaguivel, C. A.; Palomino, C. G.; Carretero, M. I.; Fumuso, F. G.; & Arcce, I. L. (2023). Pregnancy and birth rate outcomes in alpacas (Vicugna pacos) inseminated with frozen semen using two commercial extenders. Reproduction in Domestic Animals, 00, 1-7. doi: 10.1111/rda.14514 |
URI : | https://hdl.handle.net/20.500.12955/2416 |
metadata.dc.identifier.doi: | https://doi.org/10.1111/rda.14514 |
ISSN : | 1439-0531 |
metadata.dc.subject.ocde: | https://purl.org/pe-repo/ocde/ford#4.02.01 |
Aparece en las colecciones: | Artículos científicos |
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Los ítems del repositorio están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.