Journal of Animal Science and Technology

Korean Society of Animal Sciences and Technology (한국축산학회)
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Effect of Storage Times on Sperm Function, Sperm Chromatin Structure Assay (SCSA) and Correlations Between Fertility and SCSA in Boars

액상 정액의 보존 기간이 정자 기능 및 정자염색질 구조 분석에 미치는 영향과 인공수정 분만율과의 상관관계

  • Published : 2006.12.31
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Abstract

This study was designed to evaluate the changes in sperm motility, viability, HOST(hypo-osmotic swelling test), IVP(in vitro penetration), SCSA(sperm chromatin structure assay) during storage of liquid semen collected from boars with different farrowing rates using AI, and to find the relationship between boar fertility through AI and sperm diagnostic parameters during semen storage. The results of HOST were significantly decreased according to the increasing of in semen storage days and the results of IVP were significantly decreased at 3 days of semen storage (P<0.05). The %Red was significantly different among the >80%, 70󰠏80% and <70% farrowing rate group at semen storage day 6(P<0.05). The correlation coefficients between the %Red and farrowing rate were increased according to the semen storage. In conclusion, these results suggest that the sperm parameters evaluated in these studies may be useful indicators to predict the fertility of AI and evaluate the semen quality in boars.

본 연구는 인공수정 센터에서 이용되고 있는 종모돈의 인공수정 분만율의 차이를 기준으로 하여 정액의 보존 일에 따른 정자의 생존율, CASA, HOST, IVP 및 SCSA를 조사하여 이들 정자의 분석법들과 인공수정 분만율과의 상관관계를 조사하여 종모돈의 수정 능력을 예측할 수 있는 정액 평가법을 개발하고자 실시하였다. 종모돈의 액상정액을 대상으로 CASA, HOST, IVP 및 SCSA 기법을 적용한 정액의 평가 결과는 다음과 같았다. 정액의 보존 일별 HOST 결과는 보존 일이 경과함에 따라 유의적으로 감소하였고(P<0.05), IVP 결과 난자 당 침투 정자 수는 보존 3일째에 유의적으로 감소하였다(P<0.05). 보존 0일과 6일에 HOST는 분만율이 80% 이상인 종모돈 군이 70% 미만인 종모돈 군 보다 유의적으로 높았고, 3일에서는 80% 이상인 종모돈 군이 다른 종모돈 군에 비하여 높았다(P<0.05). IVP는 보존 0일에 분만율이 80% 이상인 종모돈 군이 70% 미만인 종모돈 군보다 난자당 침투 정자 수가 유의적으로 많았다(P<0.05). %Red는 보존 0일과 3일에는 분만율이 80% 이상과 70% 미만인 종모돈 군 간에 유의적인 차이를 보였으나 보존 6일에서는 모든 종모돈 군간에 유의적인 차이가 있었다(P<0.05). %Red(r=0.79, P<0.01 ; r=0.86, P<0.01 ; r=0.88, P<0.01)는 정액의 보존 일이 증가함에 따라 분만율과의 부의 상관 계수가 증가하였다. 이상의 결과를 종합해 보면 SCSA는 정액의 수정 능력을 평가하는데 있어서 매우 유용한 방법이며, 정액의 보존 일은 여러 가지 정자 기능과 SCSA 결과에 크게 영향을 주는 것으로 나타났다. 정액의 수정 능력을 평가함에 있어서 정액의 보존 일령을 고려하고 정자 기능 검사와 SCSA를 병행하여 실시할 경우 종모돈의 수정 능력 평가 시 정확성을 더욱 높일 수 있는 유용한 방법이 될 수 있을 것으로 사료된다.

Keywords

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