NUTRITIONAL STUDIES ON SOME FRESH WATER FISHES

D. El-Saidy, G. Zanaty, A. El-Hais, E. Hussein
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Abstract

: This study was conducted in the Fish laboratory at Poultry and Fish Department, Faculty of Agriculture, Menoufia University. It was consisted of two experiments to evaluate the effect of some feed additives in the diets for mono-sex Nile Tilapia and common carp fries. The obtained results showed that the supplementation of zeolite at 10 g/kg diet improved the growth and feed utilization. The minerals composition of fish feces indicated that Fe in feces increased by increasing the dietary zeolite and it was excreted and did not accumulate in the fish body. However, the inclusion of marjoram leaves in the diets for common carp fries had a positive effect on the growth performance and the best addition was 2.5 g/kg diet. No diet-related histopathological changes were noted in all examined tissues of the fish among all treatments in both experiments.
一些淡水鱼的营养研究
本研究在Menoufia大学农学院家禽与鱼类系的鱼类实验室进行。本试验分为两个试验,研究了不同饲料添加剂对单性尼罗罗非鱼和鲤鱼育苗的影响。结果表明,饲粮中添加10 g/kg沸石可提高生长和饲料利用率。鱼粪的矿物质组成表明,随着饲料中沸石含量的增加,粪便中的铁含量有所增加,并被排出体外,未在鱼体内积累。然而,在鲤鱼育苗饲料中添加马郁兰叶对鲤鱼的生长性能有积极的影响,添加量为2.5 g/kg时效果最佳。在两个实验中,所有处理的鱼的所有检查组织中均未发现与饮食相关的组织病理学变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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