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Efecto del colesterol y la dimetilformamida sobre parámetros posdescongelación en espermatozoides de caballos criollos colombianos

Efecto del colesterol y la dimetilformamida sobre parámetros posdescongelación en espermatozoides de caballos criollos colombianos



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Mesa, A. M., & Henao R, G. (2012). Efecto del colesterol y la dimetilformamida sobre parámetros posdescongelación en espermatozoides de caballos criollos colombianos. Revista MVZ Córdoba, 17(1), 2908-2915. https://doi.org/10.21897/rmvz.260

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PlumX
Ana M Mesa
Guillermo Henao R

RESUMEN

Objetivo. Evaluar el efecto del colesterol y la dimetilformamida (DMF) sobre la criosupervivencia del semen de caballos criollos colombianos. Materiales y métodos. Se recolectó semen de diez caballos y se congeló bajo el mismo protocolo, con variaciones del crioprotector (glicerol 5% o DMF 5%) y la adición o ausencia de colesterol como modificador de membrana (1.5 mg ciclodextrinas con colesterol por cada 120 x 106 células). La criosupervivencia se evaluó estimando movilidad mediante el software SCA. La vitalidad e integridad de membrana posdescongelación se estimó usando eosina-nigrosina y test hipo-osmótico respectivamente. Resultados. Incubar el semen con el colesterol, tuvo un aumento significativo del porcentaje de movilidad total y progresiva, en la velocidad de los espermatozoides y el porcentaje de espermatozoides rápidos y una disminución del porcentaje de espermatozoides con movilidad lenta. Adicionalmente se incrementó el porcentaje de espermatozoides vivos y con integridad de membrana (p<0.05). La DMF como agente crioprotector, mejoró todos los parametros evaluados al ser comparada el glicerol (p<0.05). Conclusiones. Ambos procedimientos mejoraron los parámetros evaluados debido a efectos aditivos del crioprotector y del modificador de membrana, pero no hubo interacción entre estos dos factores.


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