Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 525503
Title Een onderzoek naar de invloed van de celmembranen en eenige andere factoren op de verteringscoefficienten
Author(s) Huisman, T.J.
Source University. Promotor(en): E. Brouwer. - Groningen : Wolters - 110
Publication type Dissertation, internally prepared
Publication year 1946
Categories Feed Composition and Quality
Abstract Factors affecting the digestibility of feedstuffs were studied with special attention to cell wall components such as crude fibre, lignin, silicic acid, pentosans and tannic acid.

Lignin in feeds was estimated by a new method. Lignin in grass increased with age and with higher rates of N. In the second cut lignin was higher than in the first. Lignin had more effect than crude fibre and silicic acid on digestibility. Chemical and microscopic studies showed that the lower digestibility of protein if fibre content was high was not caused by lower penetration of the cell walls by digestive enzymes. True digestibility for protein hardly depended on protein and crude fibre in the feed. Perhaps higher crude fibre content may increase the number of intestinal bacteria. More of the intestinally secreted protein would then be incorporated in bacteria which would stimulate the protein secretion, and increase the amount of metabolic faecal protein. There might be a limit to the increase in metabolic faecal protein, reached in ruminants and in pigs on rations with crude fibre contents similar to those in ruminant rations.

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