5种杂交F_1罗非鱼生长性能比较研究

Comparison of Growth-Performance of Five Hybrid F_1 Tilapias

对4种杂交F1尼奥罗非鱼(不同尼罗罗非鱼品系♀×奥利亚罗非鱼♂)尼奥Ⅰ、尼奥Ⅱ、尼奥Ⅲ、尼奥Ⅳ与莫荷鱼(莫桑比克罗非鱼♀×荷那龙罗非鱼♂)进行了生长对比试验。试验结果表明:①绝对增重率(g/d)为莫荷鱼>尼奥Ⅱ>尼奥Ⅲ>尼奥Ⅰ>尼奥Ⅳ(P<0.01);②五种杂交F1罗非鱼雄性率为莫荷鱼>尼奥Ⅲ>尼奥Ⅰ>尼奥Ⅱ>尼奥Ⅳ(P<0.05),成活率彼此间无差异(P>0.05);③肥满度(K)为莫荷鱼>尼奥Ⅰ>尼奥Ⅲ>尼奥Ⅱ>尼奥Ⅳ(P<0.01)。以上结果表明,莫荷鱼生长性能较好,具有推广的价值。

Results of comparative experiment of growth of five hybrid F1 tilapias ni＇ao Ⅰ , ni＇ao Ⅱ , ni＇aoⅢ, ni＇aoⅣ （ different strains O. niloticus ♀× O. aureus ♂ ）and too＇he（ O. mossambicus ♀× O. hornorum ♂ ）were： ①The absolute growth rate（g/d）was too＇he 〉ni＇aoⅡ 〉ni＇aoⅢ 〉ni＇ao Ⅰ 〉ni＇aoⅣ, （P〈0.01）; ②The male rate（% ）was mohe 〉 hi＇ ao Ⅲ 〉 ni＇aoⅠ 〉 ni＇ao Ⅱ 〉 ni＇aoⅣ, （P 〈 0. 05 ） ; The survival rate had no difference among them（ P 〉 0. 05 ）.③The fat factor（K） was too＇he 〉 ni＇ao Ⅰ 〉 ni＇aoⅢ〉 ni＇ao Ⅱ〉 ni＇aoⅣ, （P 〈 0. 01 ）. In a word, the growth - performance of too＇ he was better than others, which was worthy of popularizing.