Study on Cryopreservation of Epididymal and Ejaculated Semen in Korean Native Canine and Subsequent Pregnancy Rate after Artificial Insemination

서지정보

ㆍ발행기관 : 한국동물번식학회 ㆍ수록지정보 : Reproductive & developmental biology / 28권 / 3호
ㆍ저자명 : Kim S. K., Lee B. K., Kim M. K.

목차

INTRODUCTION MATERIALS & METHODS Donor Animals Freezing of Semen and Viability Examination Artificial Insemination Pregnancy Diagnosis RESULTS Viability of Frozen-Thawed Semen Assessment of Epididymal Sperm Prior to Freezing and after Thawing Pregnancy Rate after AI DISCUSSION REFERENCES

영어 초록

This study was carried out to investigate the general characteristics and viability of sperm after freezing and thawing and the pregnancy rates after artificial insemination with thawed semen. The rates of viable sperm after slow and rapid freezing were 87.4±3.85% and 70.8±4.45%, respectively which were significantly lower than that of fresh semen control (91.7±3.45%). The mean concentration of epididymal sperm after dilution in 1.0 ml saline and. 3.0 ml extender in a various concentrations of cryoprotectants was 124.5±48.3 x 10/sup 6/ (range of 45 x 10/sup 6/ to 280 X 10/sup 6/ /ml). There was a significant difference not in the percentage of acrosome-reacted sperm, but in the percentage of capacitated sperm, between fresh and frozen-thawed epididymal semen. When frozen-thawed after diluting with tris-buffer extender containing glycerol, DMSO and ethylene glycol with concentration of 2 to 6%, the rates of epididymal sperm exposed to different cryoprotectants ranged from 14.4±4.7% to 20.7±5.8%, 17.8±5.2% to 36.5±4.9%, and 14.4±4.6% to 18.5±5.3%, respectively which were lower compare to fresh semen control. The pregnancy rate after artificial insemination with frozen semen was 70.6%, whereas that with fresh semen was 90.0% in dogs with naturally induced estrus.

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