| 金鳟日本品系不同家系提纯复壮后生长性能的比较 |
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| 引用本文： | 孙鹏,户国,谷伟,徐革锋,白庆利,王炳谦.金鳟日本品系不同家系提纯复壮后生长性能的比较[J].淡水渔业,2017(6):14-20. |
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| 作者姓名： | 孙鹏 户国 谷伟 徐革锋 白庆利 王炳谦 |
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| 作者单位： | 中国水产科学研究院黑龙江水产研究所,哈尔滨,150070 |
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| 基金项目： | 中央级公益性科研院所基本科研业务费专项 |
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| 摘 要： | 本实验通过人工授精技术和苗种标准化培育方法建立16组金鳟(Oncorhyncus mykiss)日本品系全同胞家系。运用方差分析、多重比较等方法分析不同家系不同时期的生长性能。结果显示:不同时期各组家系间平均体长、体重存在显著性差异,其中在5月龄阶段,J7家系增重最快,绝对增重率比全部家系的均值高38.83%,比增重最慢的家系J25高98.66%,表现出明显的生长优势;9月龄阶段,J7家系增重最快,绝对增重率比全部家系均值高25.93%,比增重最慢的家系J27高85.37%;12月龄时,J7家系增重最快,绝对增重率比全部家系均值高27.68%,比增重最慢的家系J25高58.27%,但不同月龄阶段各组家系的绝对增重率及体重值排序并不一致;金鳟日本品系个体体重性状的变异系数高于体长性状的变异系数,1月龄、5月龄、9月龄、12月龄体重的变异系数分别为34.34%、30.60%、27.91%、27.06%,体长的变异系数分别为10.34%、10.31%、9.91%、9.40%。在整个生长测量过程中,J7、J11、J15三个家系,无论是体长还是体重都表现出较优的生长速度和增长量,生长优势明显,可以判断J7、J11、J15家系为优秀家系。研究结果为进一步的选育提供了良好的材料。
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| 关 键 词： | 日本金鳟(Oncorhyncus mykiss) 家系 生长性能 |
Comparisons of growth traits in different families of Oncorhynchus mykiss after purification and rejuvenation |
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| Abstract: | Sixteen full-sibs families of Oncorhynchus mykiss were constructed using artificial insemination technology in standard procedure for larval-rearing,and the growth performances among the families at different periods were compared by variance analysis and multiple comparison.The results showed that there were significant differences in growth trait among different families at different periods.In body weight,family J7 gained the rapidest weight at month 5,the absolute growth rate was 38.83％ higher than the mean values of all families,and 98.66％ higher than that of the lowest (J25),which displayed an obvious growth advantage;family J7 was ranked first at month 9 for 25.93％ higher than the mean value and 85.37％ higher than that of the lowest (J27);family J7 was also ranked first at month 12 for 27.68％ higher than the mean value,and 58.27％ higher than that of the lowest (J25),however,the rank of the weight gain during different months were varied.The coefficient of variation in body weight at 1,5,9,12 was 34.34％,30.60％,27.91％,and 27.06％,respectively,higher than that of the body length which was 10.34％,10.31％,9.91％ and 9.40％,respectively.Overall,families J7,J11 and J15 displayed better performance in both growth rate and gain of body weight and length.Tberefore,the three families were considered as excellent families with superior growth advantage.These results provided1 good materials for further selective breeding of fast-growth line of O.mykiss in the future. |
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| Keywords: | Oncorhyncus mykiss family growth traits |
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