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Induction of ovulation and spawn by LHRH-A and DOM in catfish,Silurus asotus
Author(s): 
Pages: 48-51
Year: Issue:  2
Journal: JOURNAL OF FISHERY SCIENCES OF CHINA

Keyword:  促黄体素释放激素类似物地欧酮催产人工繁殖;
Abstract: 以珠江和辽河流域的鲇(Silurus asotus)为研究对象,在室内进行了不同组合的激素和药物注射实验。结果表明,注射促黄体素释放激素类似物(LHRH-A)和多巴胺拮抗物地欧酮(DOM)药物组合(LHRH-A+DOM),剂量为(10 μg+5 mg)/kg鱼体重,能快速而大量地诱导鲇血清促性腺激素(GtH)水平的升高,进而诱导产卵,产卵率为90%,显著高于其他实验组;采用LHRH-A+DOM药物组合对2 926 组鲇进行了人工催产,注射剂量为(7 μg+5 mg)/kg鱼体重,平均催产率为70%,最高80%,获得鱼苗207万尾。
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