Combined effect of lipid level and fish meal quality on liver histology of gilthead seabream (Sparus aurata)

Caballero, M. J.; López-Calero, G; Socorro, J.; Roo, Francisco J.; Izquierdo, M.S.; Fernández, A.

doi:10.1016/s0044-8486(99)00165-9

Cited by 150 publications

(115 citation statements)

References 22 publications

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“…Indeed, the optimal amount of dietary lipids would reduce the use of protein for energy production leading to a protein sparing effect, as already observed in gilthead seabream by Caballero et al (1999) and to a decreased nitrogen excretion with environmental benefit (McGoogan and Gatlin, 1999). On the other hand, excess use of fish oil would lead to an increased feed price and to a worsening fish in fish out (FIFO) ratio.…”

Section: Introductionmentioning

confidence: 82%

Effects of Dietary Lipid Level on Growth and Feed Utilisation of Gilthead Seabream (Sparus AurataL.) Reared at Mediterranean Summer Temperature

Mongile

Bonaldo

Fontanillas

et al. 2014

Italian Journal of Animal Science

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We investigated the effects of different dietary lipid levels on gilthead seabream, Sparus aurata, reared at Mediterranean summer temperature. Sixty fish (average weight 75 g) per tank were randomly distributed, in triplicate groups, in a recirculating rearing system (27±1°C) and fed ad libitum five isonitrogenous (46% dietary protein) diets with increasing lipid level (16, 18, 20, 22 and 24% named D16, D18, D20, D22 and D24, respectively), over 89 days. Specific growth rate and final body weight were not affected by dietary lipid levels. Feed conversion ratio was significantly higher (P≤0.05) in D16 as compared to the other treatments, most likely due to the shortage of dietary energy supply, coped with a significantly higher voluntary feed intake. Consequently, we obtained a significantly lower protein efficiency ratio and gross protein efficiency in D16. Gross lipid efficiency was significantly higher in D16 and D18 than in the other treatments. Biometric parameters and lipase activity in gut content were not influenced by dietary treatments. In conclusion, D18 seems the most suitable diet for gilthead seabream reared at Mediterranean summer temperature, providing both the lowest fish in fish out (FIFO) ratio and a protein sparing effect, which makes gilthead seabream's production economically and environmentally more sustainable.

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Section: Introductionmentioning

confidence: 82%

Effects of Dietary Lipid Level on Growth and Feed Utilisation of Gilthead Seabream (Sparus AurataL.) Reared at Mediterranean Summer Temperature

Mongile

Bonaldo

Fontanillas

et al. 2014

Italian Journal of Animal Science

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“…It is considered a target organ for the study of interactions among environmental factors and structure and/or hepatic functions (Bruslé & Anadon). In this sense, the morphological characteristics of the liver have been associated with physiological status in fish (Caballero et al, 1999) and used as an indicator of environmental quality (Rocha et al, 1994;Al-Youseif et al, 2000;Gochfeld, 2003).…”

Section: Introductionmentioning

confidence: 99%

Morphology and Histochemistry of the Liver of Carnivorous Fish Hemisorubim platyrhynchos

Faccioli¹,

Chedid

Bombonato³

et al. 2014

Int. J. Morphol.

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SUMMARY:The aim of this study was to characterize the normal structure of the liver of Hemisorubim platyrhynchos, a carnivorous freshwater catfish found in Neotropical region, using gross anatomy, histology and histochemistry. Anatomically, the liver presents C-shaped and only two lobes: smaller right and bigger left. The gallbladder is located in right lobe and shows elongated shaped. Histological analysis demonstrated that the hepatic parenchyma is made of two hepatocytes plates surrounded by sinusoids. The hepatocytes are polygonal-shaped cells, with spherical nucleus and a dark prominent nucleolus. The cytoplasm presents large amount of lipids and glycogen deposits PAS positives. There are no hepatic lobules or portal triads. Bile ducts are lined by columnar epithelial cells with apical mucosubstances PAS and AB positive. Furthermore, the liver presents melano-macrophages centers, distributed next to the blood vessels and bile ducts, constituted by cells accumulating pigments, whose presence may be related to the nutritional status of the fish. Moreover pancreatic tissue was observed in visceral portion of liver, formed by exocrine pancreatic tissue and islet organ, constituting an extrahepatic pancreas.

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“…In fish, the liver plays an important role in females because during reproduction, this organ mobilizes food reserves for the production of vitellogenin (El-Sayed and Kawanna, 2007;Tsadik and Bart, 2007;Andrade et al, 2010). In this sense, the liver can be used as a body indicator of the nutritional or reproductive physiological status of fish (Caballero et al, 1999).…”

Section: Resultsmentioning

confidence: 99%

Essential oils in the initial phase of broodstock diets of Nile tilapia

et al. 2014

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-This study evaluated the effect of feed supplementation (at doses of 0, 50, 100, 150, and 200 mg/kg) with SALUTO ® , a microencapsulated blend of essential oils including carvacrol, cinnamaldehyde, 1,8-cineol, and pepper oleoresin, in Nile tilapia (Oreochromis niloticus) broodstock on reproductive and growth parameters during the initial phase of rearing. The growth parameters, somatic indexes and gonadal and hepatic parameters were analyzed. Quantitative parameters of growth, ovary fat and crude protein were not affected by supplementation of the additive. However, an increase in crude protein in the female liver was observed in correlation with increased essential oil levels. The female hepatosomatic index was also correlated with supplementation of essential oils. Feeding Nile tilapia broodstock diets containing an essential oil compound (SALUTO ® ) affects only the females, promoting an increase in liver protein inclusion and hepatosomatic index without impairing performance.

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Combined effect of lipid level and fish meal quality on liver histology of gilthead seabream (Sparus aurata)

Cited by 150 publications

References 22 publications

Effects of Dietary Lipid Level on Growth and Feed Utilisation of Gilthead Seabream (Sparus AurataL.) Reared at Mediterranean Summer Temperature

Effects of Dietary Lipid Level on Growth and Feed Utilisation of Gilthead Seabream (Sparus AurataL.) Reared at Mediterranean Summer Temperature

Morphology and Histochemistry of the Liver of Carnivorous Fish Hemisorubim platyrhynchos

Essential oils in the initial phase of broodstock diets of Nile tilapia

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