Brood Stock and Egg Production

Павлов, Д. С.; Kjørsvik, Elin; Refsti, T.; Andersen, ØIvind

doi:10.1002/9780470995617.ch5

Cited by 30 publications

(17 citation statements)

References 135 publications

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“…It has been claimed that astaxanthin triggers a speedier oocyte maturation in rainbow trout. The effectiveness of a number of nutrient supplements including astaxanthin, vitamin A and E, and the polyunsaturated fatty acids in augmenting the reproductive physiology in fish have also been reviewed by several authors (Hardy 1985;Bromage 1995;Furuita et al 2000Furuita et al , 2002Pavlov et al 2004;Wade et al 2015b). Carotenoids particularly astaxanthin are recognized to be involved in the reproductive processes of many organisms due to their accumulation within reproductive organs (Goodwin 1950;Pangantihon-Kuhlmann et al 1998;Wouters et al 2001;Linan-Cabello et al 2002a;Wade et al 2015a).…”

Section: Uses and Benefits Of Astaxanthinmentioning

confidence: 99%

Astaxanthin as feed supplement in aquatic animals

Lim

Yusoff

Shariff

et al. 2017

Reviews in Aquaculture

291

208

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Astaxanthin is a high value keto‐carotenoid pigment renowned for its commercial application in various industries comprising aquaculture, food, cosmetic, nutraceutical and pharmaceutical. Among the verified bio‐resources of astaxanthin are red yeast Phaffia rhodozyma and green alga Haematococcus pluvialis. The supreme antioxidant property of astaxanthin reveals its tremendous potential to offer manifold health benefits among aquatic animals which is a key driving factor triggering the upsurge in global demand for the pigment. Numerous scientific researches devoted over a number of years have persistently demonstrated the instrumental role of astaxanthin in targeting several animal health conditions. This review article evaluates the current best available evidence to judge the beneficial usage of astaxanthin in aquaculture industry. Most apparent is the profound effect on pigmentation, where astaxanthin is frequently utilized as an additive in formulated diets to boost and improve the coloration of many aquatic animal species, and subsequently product quality and price. Moreover, the wide range of other physiological benefits that this biological pigment confers to these animals is also presented which include various improvements in survival, growth performance, reproductive capacity, stress tolerance, disease resistance and immune‐related gene expression.

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Section: Uses and Benefits Of Astaxanthinmentioning

confidence: 99%

Astaxanthin as feed supplement in aquatic animals

Lim

Yusoff

Shariff

et al. 2017

Reviews in Aquaculture

291

208

View full text Add to dashboard Cite

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“…Despite many advances in Atlantic cod Gadus morhua L. 1758 broodstock nutrition (Watanabe, 1985; Bromage & Roberts, 1995; Izquierdo et al , 2001; Pavlov et al , 2004; Fernandez‐Palacios et al , 2011) and significant research into their culture, larval quality and survival rates remain relatively poor and unpredictable in this species (Brown et al , 2003; van der Meeren & Ivannikov, 2006; van der Meeren et al , 2007; Avery et al , 2009). High production costs, variable egg quality and low larval survival are among the factors that cause problems in commercialization of G. morhua aquaculture.…”

Section: Introductionmentioning

confidence: 99%

The effect of dietary lipid content and stress on egg quality in farmed Atlantic cod Gadus morhua

Bogevik

Natário

Karlsen

et al. 2012

Journal of Fish Biology

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The present study assessed differences in fecundity and egg quality from Atlantic cod Gadus morhua fed isoproteic diets containing 13% fat (low fat, LF) or 20% fat (high fat, HF) and either stressed or left unstressed as a control over the spawning season. Each diet was fed to triplicate groups of G. morhua from June 2009, through to first maturation and spawning. In January 2010 sub-groups of G. morhua were moved to land-based spawning tanks where the experimental trial was carried out. At the start of the experiment, G. morhua fed the high-fat diet were significantly larger than G. morhua fed low-fat diet. These differences were maintained through the spawning season, although with a loss of mass in both dietary groups. Relative fecundity through the season was significantly lower in stressed G. morhua fed LF compared to unstressed G. morhua fed the same diet. Stressed G. morhua had a higher variability in weekly amount of eggs spawned, spawning occurred more irregularly, and the spawning period lasted longer than in unstressed G. morhua. Several egg quality variables were also affected: eggs from G. morhua fed LF and exposed to stress had lower fertilization and hatching rates compared to the unstressed G. morhua fed the same diet as well as all G. morhua fed HF. Gadus morhua fed a low-fat diet appeared less tolerant to stress than fish fed a high-fat diet.

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“…However, the biologically active FA for fish are the LC-PUFA, DHA (22:6n-3), EPA (20:5n-3) and ARA (20:4n-6), and marine fish cannot endogenously synthesize these LC-PUFA from the short-chain PUFAs α-linolenic (18:3n-3) and linoleic (18:2n-6) acid and so they require LC-PUFA for optimal growth, health status, reproductive behaviour and successful larval development (Tocher 2010). It has been estimated that, in the SW Mediterranean, at least 20 different fish species settle near coastal farms (FernandezJover et al 2009), and LC-PUFAs may be a key factor in obtaining high fecundity, egg quality, fertilization and hatching success (Pavlov et al 2004). Spawners of cultured species are fed a diet differing from that of fish reared for human consumption, namely, one optimizing the requirements for reproduction in terms of gonad development, egg quality and larval survival.…”

Section: Fa Profiles Of Juvenile Fishmentioning

confidence: 99%

Monitoring the influence of marine aquaculture on wild fish communities: benefits and limitations of fatty acid profiles

Fernandez‐Jover¹,

Arechavala-López²,

Martínez-Rubio³

et al. 2011

Aquacult. Environ. Interact.

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Fatty acids (FA) have been applied as indicators of the influence of coastal sea-cage fish farming on wild fish communities in several recent scientific publications. Due to the relatively high conservation of FA composition throughout the food web, they are useful for characterizing trophic relationships. The increasing utilization of vegetable or alternative animal oils in the production of aquafeeds results in cultivated fish exhibiting higher levels of terrestrial FAs in their tissues. As previously reported, wild fish ubiquitously aggregate around fish farms as a consequence of the introduction of new habitat and the easy availability of food—fish farms act as enhanced fish aggregation devices (FADs). The influence of food pellets on the composition of wild fish has been detected in recent studies on salmon, sea bass and sea bream aquaculture, with increased levels of linoleic acid (18:2n-6) and a low n-3/n-6 ratio as clear indicators of the consumption of food pellets from the farms. The potential ecological and physiological effects on wild fish are presently unknown. In the present article, guidelines are proposed for the investigation and use of terrestrial FAs to track the effects of coastal aquaculture on wild fish communities and local fisheries, as well as the benefits or limitations of this technique

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Brood Stock and Egg Production

Cited by 30 publications

References 135 publications

Astaxanthin as feed supplement in aquatic animals

Astaxanthin as feed supplement in aquatic animals

The effect of dietary lipid content and stress on egg quality in farmed Atlantic cod Gadus morhua

Monitoring the influence of marine aquaculture on wild fish communities: benefits and limitations of fatty acid profiles

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