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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 1991.11
- 수록면
- 97 - 110 (14page)
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This study was undertaken to understand the seasonal changes of hormone levels such as luteinizing hormone (LH), follicle stimulating hormone (FSH) and estradiol-17β, serum components such as albumin, total protein and triglycerides, and GSI of rainbow trout (Oncorhynchus mykiss) under the normal-light circumstances.
LH levels were the highest in November whereas FSH levels were decreased progressively from October to February. Serum GTH, such as LH and FSH, levels were low immediately after egg-stripping and were significantly increased in the summer in association with the initiation of vitellogenesis.
Serum albumin, total protein, and triglycerides were significantly increased in August in association with initiation of vitellogenesis and were peak in November prior to egg-stripping.
Oocyte growth, measured by oocyte diameter and GSI, was significantly increased in August and showed the highest value in January.
Correlation coefficients of serum LH with FSH and estradiol-17β were +0.844 and +0.947, respectively. Correlation coefficients of estradiol-17β with albumin and total protein were +0.634 and +0.859, respectively. Correlation coefficients of serum estradiol-17β with triglycerides and GSI were +0.673 and +0.694, respectively.
Probably by positive feedback mechanism, LH, FSH and estradiol-17β appeared to stimulate to liver to secrete albumin, total protein and triglycerides for vitellogenesis.
LH levels were the highest in November whereas FSH levels were decreased progressively from October to February. Serum GTH, such as LH and FSH, levels were low immediately after egg-stripping and were significantly increased in the summer in association with the initiation of vitellogenesis.
Serum albumin, total protein, and triglycerides were significantly increased in August in association with initiation of vitellogenesis and were peak in November prior to egg-stripping.
Oocyte growth, measured by oocyte diameter and GSI, was significantly increased in August and showed the highest value in January.
Correlation coefficients of serum LH with FSH and estradiol-17β were +0.844 and +0.947, respectively. Correlation coefficients of estradiol-17β with albumin and total protein were +0.634 and +0.859, respectively. Correlation coefficients of serum estradiol-17β with triglycerides and GSI were +0.673 and +0.694, respectively.
Probably by positive feedback mechanism, LH, FSH and estradiol-17β appeared to stimulate to liver to secrete albumin, total protein and triglycerides for vitellogenesis.
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UCI(KEPA) : I410-ECN-0101-2009-529-015328293