Unidentified growth factors in fish meal: Experiments with organic arsenic compounds in broiler diets

Bjørnstad, Johan; Opstvedt, J.; Lunde, Gulbrand

doi:10.1080/00071667408416136

Cited by 10 publications

(1 citation statement)

References 13 publications

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“…Consequently, lower feed intake and reduced growth caused by reducing the dietary FM level remains a problem to cope with. Some decades ago, it was a professional commonplace that FM contains an unknown growth factor (UGF) which is acting on fish Andrews and Page (1974) and also on poultry Bjørnstad et al (1974); Opstvedt and Gjefsen (1975). Since that time lots of "unknows" of this factor became "knowns".…”

Section: Feeding Stimulants From Natural Ingredient Sourcesmentioning

confidence: 99%

Feed efficiency, nutrient sensing and feeding stimulation in aquaculture: A review

Hancz

2020

AAK

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Ameliorating of feed efficiency always was and will remain the key element of aquaculture in which minimalizing losses during feed intake play an important role. Decreasing feed losses important not only from the economic point of view but also from an environmental standpoint. Feeding stimulants are often used additives in complete aquaculture feeds. Better knowledge of the food-sensing of cultured species is essential in the development of adequate feeding stimulants. The present paper aims to overview the nutrient-sensing of aquatic animals and the use of the wide variety of feeding attractants and stimulants.

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Section: Feeding Stimulants From Natural Ingredient Sourcesmentioning

confidence: 99%

Feed efficiency, nutrient sensing and feeding stimulation in aquaculture: A review

Hancz

2020

AAK

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Isolation of an organoarsenic compound present in cod liver

Lunde¹

1975

J Sci Food Agric

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By methods based on ion exchange, liquid extraction, gel filtration and thinlayer chromatography, an extract of marine origin has been prepared that contains close to 100 % (on dry weight basis) of a water-soluble organoarsenic compound. As starting material an aqueous extract prepared by enzymic hydrolysis of defatted cod liver has been used. The arsenic compound has been further characterised by i.r. and U.V. spectroscopy. Attempts have also been made at making derivatives of the compound. The organoarsenic compound has a strong absorption at about 260 nm. It also has an infrared spectrum showing aromatic characteristics and hydroxyl-and amino functions. By reaction with bistrimethylsilyltrifluoracetamide (BSTFA) the water-soluble organoarsenic compound is converted to a compound that is soluble in organic solvents. By methylating (dimethylforrnamide-diethylacetal) the compound becomes less polar, but is still partly soluble in water.

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Fishmeal and oil from lantern fish (Myctophidae) with special emphasis on protein quality

Haque¹,

Pettersen²,

Larsen³

et al. 1981

J Sci Food Agric

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Fishmeal made from lantern fish (family: Myctophidae; genus: Benthosemapterotum) had proximate, mineral, amino acid and fatty acid composition within the range reported for fishmeal made from conventional fish. Similarly, the pressed-out oil had a fatty acid composition and content of unsaponifiables as reported for conventional fish oil. The content of unsaponifiables in the body fat of the fish indicated that wax esters contributed a minor part of the lipids of this species of lantern fish. Determined in chicks, the true digestibility of the amino acids varied from 92 % (arginine) to 73 % (hydroxyproline) which for most of the amino acids was 1-3 % units lower than that found for a high-quality capelin fishmeal. No differences in rate of mortality, growth rate and feed consumption and utilisation were found between lantern and capelin fishmeal when they replaced increasing amounts (0 to 100 %) of soya bean meal as protein supplements (72% of total protein) to cereal diets, both fishmeals reducing feed consumption and causing a significant improvement in feed utilisation compared with soya bean meal. The data indicate that lantern fish may be used for the production of fishmeal.

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Unidentified growth factors in fish meal: Experiments with organic arsenic compounds in broiler diets

Cited by 10 publications

References 13 publications

Feed efficiency, nutrient sensing and feeding stimulation in aquaculture: A review

Feed efficiency, nutrient sensing and feeding stimulation in aquaculture: A review

Isolation of an organoarsenic compound present in cod liver

Fishmeal and oil from lantern fish (Myctophidae) with special emphasis on protein quality

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