Effects of the fresh and dried housefly (Musca domestica) larvae in the diets of Nile tilapia Oreochromis niloticus (Linnaeus, 1758): growth, feed utilization efficiency, body composition and biological indices

IF 1.4 Q3 MARINE & FRESHWATER BIOLOGY International Aquatic Research Pub Date : 2023-01-01 DOI:10.3153/ar23001
C. S. Alofa, Isabella Yasmine Olodo, Mouhamed Chabi Kpéra Orou Nari, Y. Abou
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Abstract

A 56-day feeding trial was undertaken to assess the ef-fects of housefly maggots (HM) forms (dried and fresh) as protein sources on growth, feed efficiency, and body indices of Oreo-chromis niloticus finger-lings. A control diet (T0) contained 300 g/kg of fish-meal (without HM). Two practical diets with the same formula were prepared with dried HM (T1) and fresh HM (T2) where 66 % of the fishmeal was replaced. Di-ets were fed to triplicate groups of tilapia (mean ini-tial weight: 10.26 ±0.12 g). There was no difference in survival, condition factor, feed conversion ratio, and protein efficiency ratio. Fish fed diets T0 and T1 had sig-nificantly increased (P < 0.05) mean final weight (50.25 ±1.39 - 52.24 ±1.03 g), specific growth rate (2.84 ±0.03 - 2.88 ±0.03 %/day) and weight gain (389.70 ±7.63 - 402.78 ±8.16 %) compared to T2 diet ones (46.30 ±2.03 g; 2.67 ±0.07 %/day and 356.70 ±7.76 % respective-ly). Viscerosomatic and hepatosomatic index in fish fed T1 and T2 diets were significantly higher than those fed T0. The present findings indicate that the dried form of housefly maggot has given the best results in terms of growth compared to the live form. However, housefly forms did not affect feed efficien-cy parameters.
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鲜蝇和干蝇幼虫对尼罗罗非鱼(Oreochromis niloticus, Linnaeus, 1758)饲料生长、饲料利用效率、体组成和生物学指标的影响
通过56 d的饲养试验,研究干蝇蛆和鲜蝇蛆作为蛋白质源对尼罗致色螟指仔鱼生长、饲料效率和体指数的影响。对照饲料(T0)每公斤添加300克鱼粉(不含HM)。用干HM (T1)和新鲜HM (T2)配制了两种具有相同配方的实用饲料,其中66%的鱼粉被替代。各组罗非鱼(平均初始体重10.26±0.12 g)的存活率、条件因子、饲料系数和蛋白质效率均无显著差异。T0和T1组平均末重(50.25±1.39 ~ 52.24±1.03 g)、特定生长率(2.84±0.03 ~ 2.88±0.03% /d)和增重(389.70±7.63 ~ 402.78±8.16%)显著高于T2组(46.30±2.03 g) (P < 0.05);(2.67±0.07% /天,356.70±7.76%)。饲喂T1和T2的鱼内脏体指数和肝体指数显著高于饲喂T0的鱼。目前的研究结果表明,干燥形式的家蝇蛆已经给出了最好的结果,在生长方面相比,活的形式。然而,家蝇种类对饲料效率参数没有影响。
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来源期刊
International Aquatic Research
International Aquatic Research MARINE & FRESHWATER BIOLOGY-
CiteScore
2.40
自引率
7.70%
发文量
0
审稿时长
12 weeks
期刊介绍: The journal (IAR) is an international journal that publishes original research articles, short communications, and review articles in a broad range of areas relevant to all aspects of aquatic sciences (freshwater and marine). The Journal specifically strives to increase the knowledge of most aspects of applied researches in both cultivated and wild aquatic animals in the world. The journal is fully sponsored, which means it is free of charge for authors. The journal operates a single-blind peer review process. The main research areas in aquatic sciences include: -Aquaculture- Ecology- Food science and technology- Molecular biology- Nutrition- Physiology- Water quality- Climate Change
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