| 摘要: |
| 【目的】探讨吉富罗非鱼的生长规律及表型性状间的相关性，为吉富罗非鱼的养殖和亲本选育提供参考依据。【方法】以菲律宾、马来西亚2个吉富罗非鱼群体及其杂交组合为试材，对它们不同生长时期的生长性状指标(体质量、体长、体高、体宽)进行测量分析。【结果】(1) 马来西亚、菲律宾及其杂交种3个群体的日增质量分别为4.90，3.77和4.16 g/尾，体质量特定增长率分别为5.63，5.42和5.49 %/d，3个群体间的日增质量和体质量特定增长率差异显著(P＜0.05)。(2) 养殖45 d之后，马来西亚群体的日增质量显著高于菲律宾群体和杂交群体，而菲律宾群体与杂交群体的日增质量出现显著差异是在养殖75 d之后。(3) 3个群体间的体长、体高、体宽与体质量的Pearson相关系数均达到了极显著水平(P＜0.01)，其中体质量与体长的相关系数最高。【结论】马来西亚群体的生长优势最明显，同时吉富罗非鱼生长性状指标间的Pearson相关系数极显著相关。 |
| 关键词: 吉富罗非鱼 生长性能 表型性状 相关分析 |
| DOI： |
| 分类号: |
| 基金项目:农业部公益性行业科研项目(200903046)；广西水产畜牧兽医局科研计划项目(桂渔牧科1204903)；广西状族自治区直属公益性科研院所基本科研业务费专项(GXIF-2012-15)；国家现代农业产业技术体系建设专项(CRS-49)；广西八桂学者建设工程专项 |
|
| Growth performance evaluation and correlation analysis on phenotypic traits of GIFT tilapia |
|
ZHU Jia-jie,SHEN Xia-shuang,ZHOU Yu,et al
|
| Abstract: |
| 【Objective】This study aimed to explore the growth pattern and correlation between phenotypic traits of different GIFT tilapias.【Method】Three types of GIFT tilapia populations (Malaysia,Philippines and their hybrid) were selected and the body weight,body length,body height and body width at different growth stages were measured and analyzed.【Result】（1）The daily gain rates of Malaysia,Philippines and hybrid populations were 4.90,3.77,and 4.16 g/tail,respectively,and the specific weight gain rates were 5.63,5.42,and 5.49 %/d,respectively with significant differences (P＜0.05).（2) The daily gain of Malaysia population was significantly higher than other groups after 45 d,while it took 75 d to see significant differences between Philippines and the hybrid population.（3) The Pearson correlation coefficients in body length,body height,body width,and body weight were all extremely significant (P＜0.01) among three populations,and the Pearson correlation coefficient between body weight and body length was the highest.【Conclusion】The growth vigor of Malaysia GIFT was the best among the three groups,and the growth character indexes of GIFT tilapia were significantly (P＜0.01) correlated with Pearson correlation coefficient. |
| Key words: GIFT tilapia growth performance morphometric traits correlation analysis |
