Effects of Ulva rigida on the Growth, Feed Intake and Body Composition of Common Carp, Cyprinus carpio L.

Demirtaş, İbrahim; Tekinay, Ahmet Adem; Güroy, Derya; Soyutürk, Murat

doi:10.3923/jbs.2007.305.308

Cited by 56 publications

(17 citation statements)

References 8 publications

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“…The biomass can often be grown or sustainably harvested at quantities that would meet commercial aquafeed demand. Dietary supplementation of macroalgae has been trialled in many farmed fish species including Atlantic salmon ( S. salar [ 21 ]), rainbow trout ( O. mykiss [ 22 ]), European seabass ( D. labrax , [ 23 ]), carp ( C. carpio , [ 24 ]), and tilapia ( Oreochromis. niloticus [ 25 ]).…”

Section: Introductionmentioning

confidence: 99%

Temporal changes in the gut microbiota in farmed Atlantic cod (Gadus morhua) outweigh the response to diet supplementation with macroalgae

et al. 2021

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Background Aquaculture successfully meets global food demands for many fish species. However, aquaculture production of Atlantic cod (Gadus morhua) is just 2.5% of total market production. For cod farming to be a viable economic venture specific challenges on how to increase growth, health and farming productivity need to be addressed. Feed ingredients play a key role here. Macroalgae (seaweeds) have been suggested as a functional feed supplement with both health and economic benefits for terrestrial farmed animals and fish. The impact of such dietary supplements to cod gut integrity and microbiota, which contribute to overall fish robustness is unknown. The objective of this study was to supplement the diet of juvenile Atlantic cod with macroalgae and determine the impacts on fish condition and growth, gut morphology and hindgut microbiota composition (16S rRNA amplicon sequencing). Fish were fed one of three diets: control (no macroalgal inclusion), 10% inclusion of either egg wrack (Ascophyllum nodosum) or sea lettuce (Ulva rigida) macroalgae in a 12-week trial. Results The results demonstrated there was no significant difference in fish condition, gut morphology or hindgut microbiota between the U. rigida supplemented fish group and the control group at any time-point. This trend was not observed with the A. nodosum treatment. Fish within this group were further categorised as either ‘Normal’ or ‘Lower Growth’. ‘Lower Growth’ individuals found the diet unpalatable resulting in reduced weight and condition factor combined with an altered gut morphology and microbiome relative to the other treatments. Excluding this group, our results show that the hindgut microbiota was largely driven by temporal pressures with the microbial communities becoming more similar over time irrespective of dietary treatment. The core microbiome at the final time-point consisted of the orders Vibrionales (Vibrio and Photobacterium), Bacteroidales (Bacteroidetes and Macellibacteroides) and Clostridiales (Lachnoclostridium). Conclusions Our study indicates that U. rigida macroalgae can be supplemented at 10% inclusion levels in the diet of juvenile farmed Atlantic cod without any impact on fish condition or hindgut microbial community structure. We also conclude that 10% dietary inclusion of A. nodosum is not a suitable feed supplement in a farmed cod diet.

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Section: Introductionmentioning

confidence: 99%

Temporal changes in the gut microbiota in farmed Atlantic cod (Gadus morhua) outweigh the response to diet supplementation with macroalgae

et al. 2021

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“…to the prepared fish diet had a positive effect on FCR except fish fed the diet containing 25% Ulva level with the poorest FCR value. As well as, Diler et al [69] stated that PPV improved significantly with increasing dietary Ulva inclusion rate up to 15%. Also, similar results were found by Elmorshedy [65] with gray mullet.…”

Section: Feed Utilization Efficiencymentioning

confidence: 84%

Effect of Use Fresh Macro Algae (Seaweed) Ulva fasciata and Enteromorpha flaxusa With or Without Artificial Feed on Growth Performance and Feed Utilization of Rabbitfish (Siganus rivulatus) fry

Abdel-Aziz¹,

Ragab²

2017

J Aquac Res Development

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“…However, it seems that the effect of algae meal on fish carcass composition is related to their nutritional value and dietary inclusion level. The other influencing factors are fish species, size, age and experimental protocol (Diler et al, 2007;Ergün et al, 2008;Dantagnan et al, 2009;Güroy et al, 2007). Phagocytes including neutrophils and macrophages are considered as important cellular components of non-specific immune response and play an important role in the host defense against invading pathogens by producing reactive oxygen (a) (b) intermediates known as respiratory burst activity (Whyte, 2007).…”

Section: Discussionmentioning

confidence: 99%

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Kim¹,

Kim²,

Khosravi³

et al. 2014

Turk. J. Fish. Aquat. Sci.

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A 6-week feeding trial was conducted to evaluate the efficiency of hijiki (Sargassum fusiforme) and ecklonia (Ecklonia cava) as dietary supplements for juvenile olive flounder. Fish growth performance, hematology, innate immunity and disease resistance were examined. A basal experimental diet was used as a control and supplemented with 6% of either S. fusiforme or E. cava and another diet was prepared to contain 0.5% oxytetracycline (designated as Con, Hij-6, Eck-6 and OTC-0.5, respectively). The experiment was conducted in triplicate (25 fish per replicate) and the fish (initial body weight, 18.3±0.04 g) were fed one of the test diets at a rate of 3% body weight twice daily. Significantly higher (P<0.05) antioxidant capacity and polyphenolic compounds concentration were detected in hijiki and ecklonia supplemented diets. At the end of the feeding trial, fish growth performance and feed utilization were not significantly affected by dietary treatments. Significantly higher (P<0.05) hemoglobin level and respiratory burst activity were found in fish fed Hij-6 diet. The fish fed Hij-6 and Eck-6 diets exhibited higher resistance against Edwardsiella tarda challenge compared to those fed Con and OTC-0.5 diets. The findings in this study may show that hijiki and ecklonia can be used as environment friendly substitutes for antibiotics in diets for olive flounder.

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Effects of Ulva rigida on the Growth, Feed Intake and Body Composition of Common Carp, Cyprinus carpio L.

Cited by 56 publications

References 8 publications

Temporal changes in the gut microbiota in farmed Atlantic cod (Gadus morhua) outweigh the response to diet supplementation with macroalgae

Temporal changes in the gut microbiota in farmed Atlantic cod (Gadus morhua) outweigh the response to diet supplementation with macroalgae

Effect of Use Fresh Macro Algae (Seaweed) Ulva fasciata and Enteromorpha flaxusa With or Without Artificial Feed on Growth Performance and Feed Utilization of Rabbitfish (Siganus rivulatus) fry

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