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Library Catalogue

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    Union Catalogue of Agricultural Libraries in the Netherlands

    The WUR Library Catalogue contains bibliographic data on books and periodicals held by the libraries of Wageningen University and Research Centre and some 15 associated libraries. Holding data are added to each record.

    Subjects covered include Agrotechnology, Food and Food Production, Plant and Animal Sciences, Soil Science, Geo-information, Landscape and Spatial Planning, Water and Climate, Ecosystem Studies, Economics and Society.

    The joint collections of the participating libraries cover a substantial part of the internationally available scientific literature in these disciplines.

    As far as Dutch scientific literature in these fields is concerned, coverage can be considered near 100%, including much of the so-called "grey literature".

    All titles are entered in their original language. Keywords are added to facilitate subject searching.

    The database is updated every day and now contains over 830.000 records.

Record number 104161
Title Een onderzoek naar de invloed van de celmembranen en eenige andere factoren op de verteringscoefficienten
show extra info.
door Tjakko Jacobus Huisman
Author(s) Huisman, T.J.
Publisher Groningen : Wolters
Publication year 1946
Description XI, 110 p
Notes Proefschrift Wageningen
Tutors Brouwer, Prof. Dr. E.
Graduation date 1946-06-28
Dissertation no. 138
Author abstract show 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.

Online full textINTERNET
On paper FORUM ; STACKS ; 286D14
FORUM ; STACKS ; NN08202,138
Categories Feed Composition and Quality
Publication type PhD thesis
Language Dutch; Flemish
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