EFFECT OF DIFFERENT DIETS ON GROWTH PERFORMANCE AND SURVIVAL OF EUROPEAN PERCH (Perca fluviatilis L.) CULTIVATED IN RECIRCULATING SYSTEM DURING TRANSITION FROM LIVE FOOD TO FORMULATED FEED
EFFECT OF DIFFERENT DIETS ON GROWTH PERFORMANCE AND SURVIVAL OF EUROPEAN PERCH (Perca fluviatilis L.) CULTIVATED IN RECIRCULATING SYSTEM DURING TRANSITION FROM LIVE FOOD TO FORMULATED FEED
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DOI：
10.3153/ar18002
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发表时间：
2018-01
期刊：
影响因子：
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通讯作者：
G. Zhelyazkov
中科院分区：
文献类型：
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作者：
G. Zhelyazkov
研究了3种不同投喂方式对河鲈生长性能和成活率的影响。）在由天然食品向颗粒饲料过渡的过程中在循环系统中栽培。在从天然饲料向配合饲料过渡的过程中，A组的饲料中添加切碎的蚯蚓，而B组的饲料中添加冷冻的血蚯蚓。C组投喂添加液体甜菜碱的面团状饲料。三组鲈鱼的最终体重分别为：A - 18.99 ±5.73 g、B - 18.49 ±5.30 g、C - 18.06 ±5.14 g，差异不显著（P>0.05）。同样，在存活率方面，各组也没有差异。蚯蚓组饲料转化率为1.05 ±0.02，分别比红虫组和甜菜碱组低1.11 ±0.02和1.30 ±0.06。饲养方式对这一性状有显著影响（P <0.001）。
The purpose of the present study was to determine the influence of three diff e rent feeding methods on the growth performance and survival rate of European perch ( Perca fluviatilis L. ) cultivated in recirculating system during its transition from natural food to pelleted feed. During the transition from natural food to formulated diet, the feed of the fish from group A was supplemented by chopped earthworms, while that of group B - with frozen bloodworms. The perch from group C were fed dough-like feed, obtained by adding of liquid betaine. The final body weight of the perch from the three groups was as follows: A - 18.99 ±5.73 g, B - 18.49 ±5.30 g and C - 18.06 ±5.14 g , as the differences were not significant (P>0.05). Similarly, in regard to the survival rate, the groups did not differ. The FCR in the group fed earthworms was 1.05 ±0.02 and it was lower than that of the groups receiving bloodworms and betaine in the diet by 1.11 ±0.02 and 1.30 ±0.06 respectively. Significant influence of the method of feeding (Р≤0.001) was found in regard to this trait .