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Johannes Opstvedt

Directorate of Fisheries

9

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293

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Effect of fish feed processing conditions on digestive protease activities, free amino acid pools, feed conversion efficiency and growth in Atlantic salmon (Salmo salar L.)

2004 Aquaculture Nutrition
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Evaluation of feed protein quality by measuring plasma free amino acids in Atlantic salmon (Salmo salar L.) after dorsal aorta cannulation

2003 Aquaculture Nutrition
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In vitro digestibility based on fish crude enzyme extract for prediction of feed quality in growth trials

2002 Journal of the Science of Food and Agriculture
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Chemical and biological assay procedures for lysine in fish meals

1984 Journal of the Science of Food and Agriculture
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Biological availability of iron found in fish‐meals

1981 Journal of the Science of Food and Agriculture
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Citations (6)
A Biological Assay for Determination of Availability of Selenium for Restoring Blood Plasma Glutathione Peroxidase Activity in Selenium-Depleted Chicks

1980 Journal of Nutrition
- Bjørn O. Gabrielsen
- Johannes Opstvedt
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Citations (26)
Availability of Selenium in Fish Meal in Comparison with Soybean Meal, Corn Gluten Meal and Selenomethionine Relative to Selenium in Sodiumselenite for Restoring Glutathione Peroxidase Activity in Selenium-Depleted Chicks

1980 Journal of Nutrition
- Bjørn O. Gabrielsen
- Johannes Opstvedt
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A Chick Assay for Determination of Available Iron from Biological Material and Its Application to Fish Protein Concentrates

1979 Journal of Nutrition
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Citations (6)