Journal ArticleDOI
Carbohydrates in fish nutrition: effects on growth, glucose metabolism and hepatic enzymes
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TLDR
The focus then shifts to selected aspects of hormonal regulation of carbohydrate metabolism and dietary carbohydrates and their variable effects on glycogen and glucose turnover, and the correlation of dietary carbohydrates with fish health.Abstract:
The utilisation of dietary carbohydrates and their effects on fish metabolism are reviewed. Details on how dietary carbohydrates affect growth, feed utilisation and deposition of nutrients are discussed. Variations in plasma glucose concentrations emphasizing results from glucose tolerance tests, and the impact of adaptation diets are interpreted in the context of secondary carbohydrate metabolism. Our focus then shifts to selected aspects of hormonal regulation of carbohydrate metabolism and dietary carbohydrates and their variable effects on glycogen and glucose turnover. We analyse the interaction of carbohydrates with other nutrients, especially protein and protein sparing, and de novo synthesis of lipids, and finish by discussing the correlation of dietary carbohydrates with fish health.read more
Citations
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Journal ArticleDOI
Glucose metabolism in fish: a review
TL;DR: The aim is to up-date carbohydrate metabolism in fish, placing it to the context of these new experimental tools and its relationship to dietary intake and it is suggested that new research directions ultimately will lead to a better understanding of these processes.
Journal ArticleDOI
Carbohydrates in fish nutrition: digestion and absorption in postlarval stages
TL;DR: This review summarizes information regarding digestion and absorption of carbohydrates in cultivated fish and reports results of studies of digestive enzymes, e.g. amylase, chitinase, cellulase and brush border disaccharidases, which appear to be molecularly closely related and to have characteristics comparable to mammalian amylases.
Journal ArticleDOI
Nutritional regulation of hepatic glucose metabolism in fish
TL;DR: Overall, data strongly suggest that the liver of most fish species is apparently capable of regulating glucose storage, and the persistent high level of endogenous glucose production independent of carbohydrate intake level may lead to a putative competition between exogenous glucose and endogenous glucose as the source of energy.
Journal ArticleDOI
Utilisation of dietary carbohydrates in farmed fishes: New insights on influencing factors, biological limitations and future strategies
TL;DR: This review intends to put together pieces of the puzzle of dietary carbohydrate utilisation in fish based on new insights gained with respect to the various biological, nutritional and environmental factors influencing carbohydrate use, and promising future approaches to augment carbohydrate use in fish.
Journal ArticleDOI
Protein and amino acid nutrition and metabolism in fish: current knowledge and future needs
Sadasivam Kaushik,Iban Seiliez +1 more
TL;DR: In fish, despite low muscle protein synthesis rates, the efficiency of protein deposition appears to be high, and research on specific signalling pathways involved in protein synthesis and degradation have been initiated to elucidate the reasons for high dietary protein/amino acid supply required and their utilization.
References
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Journal ArticleDOI
Glucokinase in Atlantic Halibut (Hippoglossus hippoglossus) Brockmann Bodies
TL;DR: A glucokinase (high- K m hexokinase) in halibut Brockmann bodies is reported, with increasing glucose concentrations, which shows a sigmoidal saturation curve with an estimated S 0.5 of about 5 mM and a Hill-coefficient of about 1.4.
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A hexokinase from fish liver with wide specificity for nucleotides as phosphoryl donor
TL;DR: Hexokinase D from the rainbow-trout liver was found to be able to form glucose 6-phosphate (Glc-6-P) from glucose and various nucleotides such as ATP, ADP, CTP, GTP, UTP and UDP.
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Precocious alteration of digestive enzyme activities in small intestine and pancreas by chronic oral administration of protease inhibitor in suckling rats.
E. Harada,Bunei Syuto +1 more
TL;DR: The results indicate that pancreatic growth accompanied by alteration of digestive enzyme composition in the suckling rats is regulated by endogenous CCK, but the precocious induction of disaccharidase activities is not mediated by endogenousCCK released by camostat treatment.
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The effect of age, sex and diet on the plasma cholesterol levels of the Nile crocodile, Crocodylus niloticus
TL;DR: The effect of gender, diet and age on plasma cholesterol levels in captive reared and wild Nile crocodiles was studied and adult females had significantly higher plasmaolesterol levels than younger ones, having the same dietary fat.
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AMP-deaminase from sea scorpion white muscle: properties and redistribution under hypoxia
TL;DR: In this paper, the authors showed that exposure of sea scorpions to hypoxia increased the proportion of AMP-deaminase bound to particular matter which is the first such demonstration of an effect of hypoxias on the distribution of this enzyme in animal tissues.