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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 104193
Title The biological value of proteins in mixed grass hays
show extra info.
S. El-Samman
Author(s) El-Samman, S.
Publisher Wageningen : Veenman
Publication year 1961
Description 84 p ill
Notes Proefschrift Wageningen
Ook verschenen als handelsuitgave
Tutors Brouwer, Prof. Dr. E.
Graduation date 1961-04-21
Dissertation no. 299
Author abstract show abstract
Biological values of protein in grasshays cut in two years and at different times of the year were estimated in 9 trials with groups of 2 to 4 male Texel lambs, by different methods: 1) the method of Thomas and Mitchell: a) assuming a value of 3.438 for metabolic faecal protein or b) using values estimated by pepsin-HCI digestion of the faeces; 2) different modifications of the nitrogen balance index method.

Protein-poor and moderate-protein diets were used with, respectively, 3.2-7.6 and 7.3-10.3 % crude protein in dry matter. The average biological value of all hays in the low-protein diets was 89.3 and 89.9 and in the moderate-protein rations 77.8 and 75.7 (methods 1a and 1b resp.). Method 2 gave lower values, between 44.4 and 90.6. Biological value of protein in autumn hays was lower than in spring hays. Differences in composition of protein and non-protein N and heating in the stack may be partly responsible.

Online full textINTERNET
On paper FORUM ; STACKS ; 303C55
FORUM ; STACKS ; NN08202,299
Keyword(s) (cab) feeds / composition / proteins / fodder grasses
Categories Chemical Composition, Nutritive Value
Publication type PhD thesis
Language English
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