• A study on the Mitchell method for determination of the biological value of protein 

      Njaa, Leif Rein (Fiskeridirektoratets skrifter / Serie Teknologiske undersøkelser;Vol. 4, No. 5, Research report, 1963)
    • Effect of BHT (Butylated Hydroxytoluene) on the protein value of herring meal for the young rat 

      Njaa, Leif Rein; Utne, Finn; Brækkan, Olaf R. (Fiskeridirektoratets skrifter / Serie Teknologiske undersøkelser;Vol. 5, No. 2, Research report, 1966)
      The effect of BHT (butylated hydroxytoluene) on the protein quality of herring meal was studied in nitrogen balance experiments with young rats. BHT at the 0.03% level in the meal improved the protein quality of meals ...
    • Effects of Heat Treatment on Composition and Nutritive Value of Herring Meal 

      Myklestad, Ole; Bjørnstad, Johan; Njaa, Leif Rein (Fiskeridirektoratets skrifter / Serie Teknologiske undersøkelser;Vol. 5, No. 10, Research report, 1972)
      1. The effect of heat treatment on quality of herring meal has been investigated using a rotating autoclave operated under variable conditions (meal moisture: 1.1% - 41%; meal temperature: 96° C – 132° C; heating time: 0-2 ...
    • Foring av rotter med natriumnitrit og sildemel fremstilt av sild konservert med natriumnitrit 

      Njaa, Leif Rein; Brækkan, Olaf R. (Fiskeridirektoratets skrifter / Serie Teknologiske undersøkelser;Vol. 2, No. 14, Research report, 1953)
      The effect on rats of feeding sodium nitrite and herring meal produced from sodium nitrite treated herring, has been investigated. The results are in agreement with the findings of TARR & CARTER (1942). In the present ...
    • Protein value of cod and coalfish and some products for the young rat 

      Njaa, Leif Rein; Utne, Finn; Brækkan, Olaf R. (Fiskeridirektoratets skrifter / Serie Teknologiske undersøkelser;Vol. 5, No. 4, Research report, 1968)
      The protein quality of cod muscle protein and of some products of cod and coalfish was determined in nitrogen balance experiments with young rats. In most of the experiments spray dried egg albumin was used as a standard ...
    • Protein value of herring meal and some other protein concentrates of marine origin for the young rat 

      Njaa, Leif Rein; Utne, Finn; Brækkan, Olaf R. (Fiskeridirektoratets skrifter / Serie Teknologiske undersøkelser;Vol. 5, No. 1, Research report, 1966)
      Protein concentrates, mainly of marine origin, were tested in nitrogen balance experiments with young rats. Commercial herring meals produced by several methods showed only small differences in protein utilization values. ...
    • The amino acid composition and the protein value of four selected fish meals for the young chick 

      Njaa, Leif Rein; Utne, Finn; Boge, Gjermund; Brækkan, Olaf R. (Fiskeridirektoratets skrifter / Serie Teknologiske undersøkelser;Vol. 5, No. 5, Research report, 1968)
      A winter herring meal, a North Sea herring meal, a scad meal and a mackerel meal were tested as supplements to a basal vegetable chick diet and were analyzed for amino acids, vitamins and the common chemical constituents. ...
    • The Effect of Some Marine Oils and Squalene on the Plasma Cholesterol in Chicks 

      Brækkan, Olaf R.; Njaa, Leif Rein; Utne, Finn (Fiskeridirektoratets skrifter / Serie Teknologiske undersøkelser;Vol. 4, No. 4, Research report, 1962)
      The effect of some fish oils on the plasma-cholesterol level of chicks were studied in eleven experiments. Soya- bean oil, margarine fat and squalene were also included in the study. Arachis oil was used as a reference in ...