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首页> 外文期刊>Aquaculture International >Feeding frequency influences growth, feed consumption and body composition of juvenile rock bream (Oplegnathus fasciatus)
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Feeding frequency influences growth, feed consumption and body composition of juvenile rock bream (Oplegnathus fasciatus)

机译：饲喂频率会影响幼鱼的生长，饲料消耗和身体成分（Oplegnathus fasciatus）

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摘要

The influence of feeding frequency on growth, feed consumption and body composition of juvenile rock bream (Oplegnathus fasciatus) was investigated for 70 days under an ambient water temperature (mean = 22.1 A degrees C) in sea cages at Tongyeong, in the southern part of Korea. A total of 600 juveniles were used in this experiment, from which 50 juveniles (initial mean body weight 11.6 g) per cage were randomly distributed to 12 cages. They were hand-fed to satiation with a commercial diet (42.5 % protein and 21.2 kJ/g energy) at one of four different feeding frequency trials (one, two, three, and four meals per day) with triplicates. At the end of the experiment, the mean final weight of fish fed one, two, three and four meals per day were 46.3, 54.5, 60.7 and 60.1 g, respectively. The fish fed three and four meals per day showed the highest specific growth and feeding rates. The feed conversion ratio was not significantly (P > 0.05) affected by the feeding frequency. The extent of size variation in weight significantly (P 0.05) decreased with the increase of feeding frequency. The maximum feed intake of fish appeared at the first meal (08:30) of each treatment. As feeding frequency increased, lipid and energy contents also increased significantly (P 0.05), but ash content decreased (P 0.05). The total nitrogen waste output of fish was not significantly (P > 0.05) affected by the feeding frequency. We conclude that the optimum feeding frequency aimed at optimized growth of juvenile rock bream weighing from 10 to 60 g reared in sea cages is three meals per day under our experimental conditions including particular diet and temperature.
机译：在环境水温（平均值= 22.1 A摄氏度）下，在南部的统营海笼中，调查了摄食频率对鲷鱼（Oplegnathus fasciatus）生长，摄食和身体组成的影响，持续了70天。韩国。在该实验中总共使用了600只幼鱼，每笼中有50只幼鱼（平均平均体重11.6 g）随机分配到12个笼中。他们在四次一式三份的不同喂养频率试验（每天一餐，两餐，三餐和四餐）中的一种下，以商业饮食（42.5％蛋白质和21.2 kJ / g能量）饱食。在实验结束时，每天喂一餐，两餐，三餐和四餐的鱼的平均最终重量分别为46.3、54.5、60.7和60.1克。每天喂三餐和四餐的鱼显示出最高的比生长和摄食率。进料频率对进料转化率的影响不显着（P> 0.05）。体重变化的幅度随着饲喂频率的增加而显着降低（P <0.05）。鱼的最大采食量出现在每种处理的第一餐（08:30）。随着进食频率的增加，脂质和能量含量也显着增加（P <0.05），但灰分含量降低（P <0.05）。鱼的总氮排泄量不受饲喂频率的影响（P> 0.05）。我们得出结论，在我们的实验条件下（包括特定的饮食和温度），旨在优化在海笼中养成10至60 g的幼鱼的最佳摄食频率是每天三餐。

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