Korean Journal of Animal Reproduction (한국가축번식학회지)
- Volume 17 Issue 4
- /
- Pages.325-329
- /
- 1994
- /
- 1226-5284(pISSN)
Effect of Season on Testis Function and Freezing and Fertilizing Ability of Spermatozoa in Korean Native Goat II. Seasonal and Diurnal Change in Serum Testosterone Level
한국재래산양에서의 계절이 정소기능, 정자의 내동성 및 수정능력에 미치는 영향 II. 혈청내 Testosterone수준의 계절 및 하루중 변화
- Kim, C.K. (College of Industrial Studies, Chung-Ang University) ;
-
Chung, Y.C.
(College of Industrial Studies, Chung-Ang University)
;
- Kim, K.S. (College of Industrial Studies, Chung-Ang University) ;
- Kim, S. (College of Industrial Studies, Chung-Ang University) ;
- Kwon, C.J. (College of Industrial Studies, Chung-Ang University) ;
- Han, K.Y. (An Seong National Polytechnical University) ;
-
Yoon, J.T.
(An Seong National Polytechnical University)
;
-
Chung, Y.H.
(Joongbu University)
;
-
Lee, J.H.
(National Animal Breeding Institute)
- 김창근 (중앙대학교 산업대학 축산학과) ;
-
정영채
(중앙대학교 산업대학 축산학과)
;
- 김광식 (중앙대학교 산업대학 축산학과) ;
- 김수 (중앙대학교 산업대학 축산학과) ;
- 권처진 (중앙대학교 산업대학 축산학과) ;
- 한기영 (안성산업대학교) ;
-
윤종택
(안성산업대학교)
;
-
정영호
(중부대학교)
;
-
이장희
(국립종축원)
- Published : 1994.02.01
Abstract
Seasonal and diurnal variation in serum testosterone was measured by radioimmunossary in 3 mature Korean native male goats. Blood was collected at 3-h intervals for 24h in each season. Mean levels of 4 seasons ranged from 0.82 to 2.06ng/ml and no difference was among seasons, although level in fall and winter was slightly higher. Diurnal level tended to increase at daytime in all season and when diurnal variation in level was compared to daily mean of each season, level of daytime greatly(P<0.05) increased in summer. However, variation between light and dark period in other seasons did not show significant difference. Daytime increase of testosterone was found 3 to 4 after dawn and level increased 1 to 2h ahead in summer and fall than that in others. These results in serum testosterone suggest that there was no great seasonal variation in endocrine function of goat testis.