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首页> 外文期刊>Journal of Agricultural Science >The Effects of Different Feeding Rates on Growth Performance and Stomach Volume in Rainbow Trout (Oncorhynchus mykiss)
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The Effects of Different Feeding Rates on Growth Performance and Stomach Volume in Rainbow Trout (Oncorhynchus mykiss)

机译：不同饲喂速率对虹鳟鱼生长性能和胃体积的影响

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In this study, the effects of various daily feeding ratios on the growth, stomach volume and meat composition in rainbow trout (Oncorhynchus mykiss) were investigated. The feeding experiment was conducted in 450 L volume fiberglass tanks with 3 × 3 factorial patterns. During the experiment, while food were given to the fish at the first group in the 0.5% (I) of ratio of their live weight, the second group at the level of 2% (II) food were given to the fish, at the third group at the level of 6% (III) food. The initial weight and size values of the groups were 76.16±0.41 g and 19.11±1.63 cm, respectively. The final weight and size values reached up to 128.89±34.21 g, 25.09±2.37 cm; 236.05±89.32 g, 24.78±2.22 cm; and 238.91±86.67 g, 21.65±1.64 cm, for groups I, II, and III respectively. The best growth performance in terms of weight was obtained in group III, while the best growth performance in terms of size was obtained in groups I and II (P < 0.05). The best feed conversion ratio was determined in the low feeding group I (P < 0.05). At the end of experiment, three of the experimental groups were different from each other. The highest stomach volume was measured in group III (P < 0.05). In conclusion, the 6% feeding ratio increased the growth and significantly increased the stomach volume, however decreased the feed conversion ratio.
机译：在这项研究中，研究了各种日饲比对虹鳟鱼（Oncorhynchus mykiss）的生长，胃体积和肉成分的影响。进料实验在450升容积的玻璃纤维罐中进行，该罐具有3×3阶乘模式。在实验过程中，虽然第一组以活重的0.5％（I）的比例向鱼类喂食，但第二组以2％（II）的活重的比例向鱼类喂食。第三组食物水平为6％（III）。各组的初始重量和大小值分别为76.16±0.41 g和19.11±1.63 cm。最终重量和尺寸值达到128.89±34.21 g，25.09±2.37 cm; 236.05±89.32 g，24.78±2.22厘米; I，II和III组分别为238.91±86.67 g，21.65±1.64 cm。在重量方面，第三组获得了最佳的生长性能，而在尺寸上，第一组和第二组获得了最佳的生长性能（P <0.05）。在低饲料组I中确定了最佳的饲料转化率（P <0.05）。在实验结束时，三个实验组彼此不同。在第三组中测量到最高的胃容量（P <0.05）。综上所述，6％的饲喂比增加了生长并显着增加了胃的体积，但是却降低了饲料的转化率。

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