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首页> 外文期刊>African Journal of Biotechnology >The effect of feeding frequency on growth performance and body composition in juvenile rainbow trout (Oncorhynchus mykiss) reared in cold seawater
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The effect of feeding frequency on growth performance and body composition in juvenile rainbow trout (Oncorhynchus mykiss) reared in cold seawater

机译：喂养频率对少年虹鳟（Oncorhynchus Mykiss）生长性能和身体组成的影响

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摘要

This?study?was done to investigate the effects of different feeding frequencies on the growth, feed efficiency and specific growth rate (%) of juvenile of rainbow trout (Oncorhynchus mykiss,?weight 16.44±0.22 g) rearing in cold sea water conditions (5.8 to 9.3°C; 17 to 18 ppt). Fish were fed on a commercial feed to the apparent satiation twice a day (Control), six times every day (TD6), four times every day (TD4) and three times every day (TD3) for 8 weeks of the trial. The fish fed to satiation?in?all the experimental groups. Weight gain, growth rate, feed intake and final body weight decreased with reduction of feeding frequency from six times daily to two times daily. The fish fed at TD6 had relatively high apparent net protein retention and better feed conversion efficiency compared?with the fish fed at?thecontrol, TD4 and TD3. The feeding frequency had significant effect on the crude lipid, crude protein but not moisture and crude ash proximate composition of rainbow trout. It was recommended that six meals per day was the optimal feeding frequency for juvenile rainbow trout reared in cold sea water at 5.8 to 9.3°C, 17 to 18 ppt.
机译：研究？是为了探讨不同喂养频率对寒冷海水条件饲养的少年鳟鱼（Oncorhynchus Mykiss的少年）生长，饲料效率和特异性生长速率（％）的影响（1） 5.8至9.3°C; 17至18 ppt）。每天两次（对照），每天六次（TD6），每天六次（TD4），每天四次（TD3），每天进行一次，每天四次（TD3），每天喂食，每天四次（TD3）。喂养饱食的鱼？在？所有的实验组。重量增长，生长速率，进料摄入和最终体重随着每天六次的喂食频率降低而减少到两次。在TD6喂养的鱼具有相对较高的表观净蛋白质保留和更好的饲料转换效率？与鱼喂食，TD4和TD3。喂养频率对粗脂质，粗蛋白质而异，但不是虹鳟鱼的含水和原油近似组成。建议每天六餐是在5.8至9.3°C，17至18个PPT的冷水水中饲养的少年彩虹鳟鱼的最佳喂养频率。

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