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RISS 인기검색어
- 검색키워드
- 저자 : 정길생 ( Seok Won Kang (검색결과 1 건)
- 무료
- 기관 내 무료
- 유료
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강석원,정길생 ( Seok Won Kang,Kil Saeng Chung ) 한국축산학회 1976 한국축산학회지 Vol.18 No.2
This experiment was carried out to clarify the seasonal changes in general characteristics such as semen volume, sperm concentration, sperm motility, sperm abnormality and pH of the semen collected from Korean native goats by the method of electrostimulation. The results obtained in this experiment were as follows: 1. Semen volume per ejaculation was increased with decreasing daylight and the reverse was true fur the incensing daylight; average semen volume per ejaculation of November, December and January was 0.95㎖ and that of July, August and September was 0.50㎖. Significant difference (P$lt;0.05) between those two volumes was observed: 2. Seasonal changes in sperm concentration was reciprocal to those of semen volume. Average sperm concentration of July, August and September was 16.02×10^8/㎖, and that of November, December and January was 9.86×10^8/㎖ and there was also significant difference (P$lt;0.05) between those two concentration. 3. Sperm motility was changed in parallel with the variation of semen volume per ejaculation; average sperm motility of November, December and January was 83.30 and that of July, August and September was 55.10 as motility index, and significant difference (P$gt;0.05) between those two values was observed. 4. Sperm abnormality was also changed in parallel with semen volume; average percentages of abnormal spermatozoa during November, December and January were higher than those of the other months. 5. The pH of ejaculated semen was ranged from 6.80 to 7.20 throught the year and no remarkable variation acording to season was observed. 6. Significantly high (P$lt;0.01) negative correlations between semen volume and sperm concentration, sperm concentration and sperm motility, sperm concentration and sperm abnormality was observed. And there was also positive correlation between semen volume and sperm motility, semen volume and sperm abnormality, semen volume and pH, and sperm motility and pH. 7. It was clarified by those results that the reproductive activity of Korean native goat was activated by the increasing daylight began from November to January in Korea.
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