Neue Untersuchungen über die Gültigkeit und Exaktheit von Stickstoffbilanzen bei Stoffwechselversuchen an lebenden Tieren

Harnisch, Siegfried; Becker, Max

doi:10.1080/17450395809424795

Archiv für Tierernaehrung

1958

DOI: 10.1080/17450395809424795

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Neue Untersuchungen über die Gültigkeit und Exaktheit von Stickstoffbilanzen bei Stoffwechselversuchen an lebenden Tieren

Siegfried Harnisch¹,

Max Becker²

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Cited by 11 publications

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Evaluation of cereal protein quality for chicks by three different biological techniques

Butterworth¹

1962

J Sci Food Agric

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On the other hand, in the presence of adequate lysine, bread supplemented with gluten gives a high rate of growth, some five times that observed on a diet ci ordinary bread, and this high rate is achieved with diets containing only 10-15% gluten, giving a total protein content in the diet 20-25%, reckoned on a dry-weight basis. Under these conditions the improvement observed in the nutritive value of the protein is primarily due to the threonine contributed by the gluten supplement.In the Food Standards Committee Report on Bread and Flour3 it is recommended that bread supplemented with gluten should be designated as high-protein ' bread only if it contains at least zzo/b of protein, on a dry-weight basis. I t is interesting that this level, which appears to have been chosen only on the general ground that it represents a significant increase in protein content compared with that of ordinary bread, is in fact the level at which the growth-promoting value of the bread protein reaches an optimum value, provided additional lysine is also present.-In evaluation of the protein and energy value of wheat, barley and maize when fed in corljunction with wheat offals was made. The Gross Protein Value test, and two methods of estimating protein and energy retention, one the conventional balance technique and the other body analysis, were used. For protein and energy provision, the cereals were of equal value when fed in this way. The values obtained by the two methods of determining protein retention varied significantly and this is discussed. The relative accuracy of the several methods is also discussed together with the validity of the Gross Protein T'alue test.

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Evaluation of cereal protein quality for chicks by three different biological techniques

Butterworth¹

1962

J Sci Food Agric

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Effect of dietary crude protein level on protein and energy balances in growing pigs: comparison of two measurement methods

Quiniou¹,

Dubois²,

Noblet³

1995

Livestock Production Science

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A comparison of the body-water and nitrogen balance-sheet methods for determining the nutritive value of proteins

Henry¹,

Toothill²

1962

Br J Nutr

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We have applied the method of Miller & Bender (1955) to a series of thirty-five proteins or protein foods of different quality and compared the results with the NPV determined by the balance-sheet method. Before doing so it was necessary to establish, for our colony, the relationship between the age of the rat and the water and nitrogen content of its body. For this purpose two series of experiments were carried out, in the second of which the livers of the rats were analysed separately from the rest of the body, with a view to the possible application of the method to larger animals with which carcass analysis would be impracticable. In the second series some preliminary tests were also done to establish whether the ratio between body content of water and N was affected by dietary changes. EXPERIMENTAL AnimalsRats of our hooded Norwegian strain were used. They were weaned at ZI days on to our normal stock diet (McKinlay, 1951).

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Neue Untersuchungen über die Gültigkeit und Exaktheit von Stickstoffbilanzen bei Stoffwechselversuchen an lebenden Tieren

Cited by 11 publications

References 0 publications

Evaluation of cereal protein quality for chicks by three different biological techniques

Evaluation of cereal protein quality for chicks by three different biological techniques

Effect of dietary crude protein level on protein and energy balances in growing pigs: comparison of two measurement methods

A comparison of the body-water and nitrogen balance-sheet methods for determining the nutritive value of proteins

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