哲罗鲑(♀)×细鳞鲑(♂)规模化繁育及杂种生长特性研究  

Study on large-scale breeding on hybrids of Hucho taimen ( ♀) ×Brachymystax lenok ( ♂ ) and its growth characters

作　　者：郭文学[1] 佟广香[1] 张永泉[1] 王雪娇[2] 齐鹏[2] 尹家胜[1] 

机构地区：[1]中国水产科学研究院黑龙江水产研究所,哈尔滨150070 [2]东北农业大学动物科技学院,哈尔滨150030

出　　处：《淡水渔业》2015年第6期89-93,共5页Freshwater Fisheries

基　　金：国家科技支撑计划项目(2012BAD25B10);公益性行业(农业)科研专项(201003055-14)

摘　　要：进行了不同授精方法(单精授精、混精授精)对哲罗鲑(Hucho taimen)(♀)与细鳞鲑(Brachymystax lenok)(♂)杂交子代受精效果影响的试验,并研究了人工养殖条件下杂种的生长特性。结果表明,混精授精可以有效地提高杂种受精率、发眼率、孵化率和上浮率。排除疾病或不可抗力等因素,杂种体长、体质量生长都随月龄的增加而呈线性增长,杂种特定生长率有随水温变化而变化的趋势,生长比速与生长指标在6月龄之前呈现较高的生长态势,6月龄后则表现为一般生长态势,生长比速与生长指标的变化规律基本一致。杂种肥满度变化与水温变化规律不一致,这与杂种所处的生长阶段有关,也受食物组成、养殖环境及水文条件的影响。Effect of different artificial insemination methods on hybrids of Hucho taimen( ♀) × Brachymystax lenok( ♂)were studied in this experiment,so was the growth of hybrids under artificial rearing conditions. The result showed that mixed-sperm insemination can efficiently enhance the fertilization rate,egg-eyed rate,hatching rate and floating rate with a better fertilization effect on hybrids. Exclude the interference of disease and irresistible force,the growth of hybrids body length and body weight was increased linearly as the growth of month-age. The specific growth rate of hybrids showed a trend that varied with water temperature. On the other hand,the changing trend of growth coefficient and growth characteristic were basically the same that grows quickly at the first six months but relatively slower after six months old. Condition factor changing was inconsistent with water temperature,which is related to its growth phase and affected by diet composition,culture environment,hydrological factors and so on. This study can provide scientific basis for large-scale breeding and efficiency culturing on hybrids of Hucho taimen( ♀) × Brachymystax lenok( ♂).

关 键 词：规模化繁育 人工授精 哲罗鲑(Hucho taimen) 细鳞鲑(Brachymystax lenok) 杂种 生长 

分 类 号：S965.232[农业科学—水产养殖]