Nutrition & Health

A novel approach to introduce nutrients into the fish egg; the effect of egg taurine on first feeding gilthead sea bream (Sparus aurata) performance

The study demonstrated the potential of electroporation as a novel high throughput approach to introduce taurine and/or other critical nutrients into the developing eggs and a potential alternative to costly broodstock dietary supplementation.

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A review of maturation diets for mud crab genus Scylla broodstock: Present research, problems and future perspective

This paper reviewed the studies on the maturation diets for mud crab broodstock, genus Scylla and compared independently to identify their effect on reproductive performance and larval quality.  This review also discusses the problems in the previous studies for the potential future research to develop very high quality and cost-effective formulated diet for the enhancement of broodstock and seed production technology. Information from this review can be useful in developing a better quality of crustacean broodstock’s diet for commercial hatchery production.

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Abalone Feed Requirements

This document provides a general summary of the European abalone (or ormer) Haliotis tuberculata feed requirements followed by a site specific assessment related to potential impacts. This document can be used as a template adapted to individual needs...Read More.   

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Achieving Natural Coloration in Fish Culture

This paper finds that ornamental fishes are good models for color enhancement through diet and that this enhancement may be achieved using products made by marine biotechnology companies

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Can canola meal and soybean meal be used as major dietary protein sources for kuruma shrimp, Marsupenaeus japonicus?

Results obtained in using the experimental conditions of this trial show that canola meal and soybean meal could be effectively utilized as major protein sources by kuruma shrimp Marsupenaeus japonicus. The dietary fishmeal could be reduced to only 6% (85% replacement) with a blend of canola meal and soybean meal, and supplementation of methionine, lysine, phytase and fish soluble without compromising growth, feed utilization, body composition and health of juvenile kuruma shrimp.

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Effect of broodstock nutrition on reproductive performance of fish

 An improvement in broodstock nutrition and feeding has been shown to greatly improve not only egg and sperm quality but also seed production. Gonadal development and fecundity are affected by certain essential dietary nutrients, especially in continuous spawners with short vitellogenic period

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Effect of Feed Type on Growth and Fertility in Ornamental Fish, Xiphophorus Helleri

The effects of feed type on feed intake and conversion, ovary weight, and fertility were studied in red swordtail, Xiphophorus helleri. Juveniles were fed Artemia, earthworms, liver, pelleted feed, or a mixed diet.

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Effects of a mix of Bacillus sp. as a potential probiotic for Florida pompano, common snook and red drum larvae performances and digestive enzyme activities

This experiment suggests that a mix of Bacillus sp. can promote growth through an early maturation of the digestive system during the early larval stages of pompano and snook.

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Effects of on-demand feeding on sea urchin larvae (Paracentrotus lividus; Lamarck, 1816), development, survival and microalgae utilization

Results of this study suggest that the use of the variable method improves the larval survival and development and also it reduces resource consumption (phytoplankton, seawater use and work effort), which in turn could potentially improve the hatchery production of P. lividus.

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Feed Particle Size Requirements for Crucian Carp Fry

Results of ASA/China 1999 Feeding Trial 35-99-61
Feed particle size requirements for crucian carp of 2-cm to 7-cm total length were determined in a joint study by ASA and the Zhejiang Freshwater Fisheries Research Institute in Huzhou, China. Results were used to formulate feed size recommendations for fish farmers producing crucian carp using feed-based production technologies. Crumble feeds of size 0.5-mm and 1.0-mm are recommended for fry of 2-cm and 3-cm total length, respectively. Crucian carp fry can be weaned to a 1.5-mm extruded pellet at 5-cm total length

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Feeding and Digestion With Bivalves

This paper looks at the nutrient requirements and digestive traits of bivalves...Read More.

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Fish larval nutrition and feed formulation: knowledge gaps and bottlenecks for advances in larval rearing

Abstract: Despite considerable progress in recent years, many questions regarding fish larval nutrition remain largely unanswered, and several research avenues remain open. A holistic understanding of the supply line of nutrients is important for developing diets for use in larval culture and for the adaptation of rearing conditions that meet the larval requirements for the optimal presentation of food organisms and/or microdiets. The aim of the present review is to revise the state of the art and to pinpoint the gaps in knowledge regarding larval nutritional requirements, the nutritional value of live feeds and challenges and opportunities in the development of formulated larval diets.

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Fish Nutrition book updated

The new edition of Fish Nutrition provides readers with new information on the use of high-throughput technologies, the role of feeds on the microbiome and advances in essential nutrient requirements.

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Hydrodynamic starvation: Why so many fish larvae perish after hatching

This study uncovered the reason why 90 percent of fish larvae are biologically doomed to die mere days after hatching. The research suggests that \"hydrodynamic starvation,\" or the physical inability to feed due to environmental incompatibility, is the reason so many fish larvae perish.

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Impact of dietary fatty acids on muscle composition, liver lipids, milt composition and sperm performance in European eel

The aim of this study was to evaluate the influence of dietary regime on muscle composition, and liver lipids prior to induced maturation, and the resulting sperm composition and performance.

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In vitro digestibility of water-soluble and water-insoluble protein fractions of some common fish larval feeds and feed ingredients

In vitro methods have previously been utilised for the rapid and reliable evaluation of protein digestibility in fish. In this study we used in vitro methods to compare the digestibility of various live and artificial larval feeds and feed ingredients

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Influence of dietary phospholipids on early ontogenesis of fish

The aim of this paper is to provide explanations of how dietary phospholipid (PL) globally improves fish larval development, including growth and survival, digestive functions and skeletal development, and to propose optimal PL levels and sources in fish larval diets

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Juvenile rainbow trout responses to diets containing distillers dried grain with solubles, phytase, and amino acid supplements

Distillers dried grain with solubles (DDGS) was evaluated in juvenile Shasta-strain rainbow trout Oncorhynchus mykiss diets during a 36-day feeding trial. Two experimental diets containing either 10% or 20% DDGS with supplemented amino acids (lysine, methionine, isoleucine, and his-tidine) and phytase were compared to a fish meal-only control diet. The results suggest that DDGS, even if supplemented with essential amino acids and phytase, will lead to decreased juvenile rainbow trout growth at dietary concentrations of at 10% or greater

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Nutritional requirements of marine fish larvae and broodstock

As the  Mediterranean production of marine cultured  fish  increases,  the demand for good quality seed has been continuosly arising. To satisfy that increasing demand spawning quality and seed production success must be improved by controlling the nutritional quality of broodstock diets and first-feeding regimes

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Nutritional programming through broodstock diets to improve utilization of very low fishmeal and fish oil diets in gilthead sea bream

The main objective of this study was to research in the potential value of fatty acids as modulators of early nutritional programming in marine fish for a better utilisation of VO/VM.

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