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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 104552
Title Factors affecting litter size in Texel sheep
show extra info.
door M.A. Sharafeldin
Author(s) Sharafeldin, M.A.
Publisher Wageningen : Veenman
Publication year 1960
Description VI, 61 p ill
Notes Proefschrift Wageningen
Ook verschenen als handelsuitgave
Tutors Stegenga, Prof. Dr. T.
Graduation date 1960-04-01
Dissertation no. 277
Author abstract show abstract
The effect of age of ewes and of different lambing years on fertility expressed as number of lambs born and surviving to 2 months per lambing has been studied in field data collected by the herdbook for Texel sheep in North Holland. The fertility of ewes was compared when first bred at about 8 months or at about 20 months of age and the effect of heredity on litter size was studied.

Hereditary effects were determined by the effect of type of birth of sire, dam and ewe on the fertility of ewes, by heritability of litter size, by the effect of sires on fertility of these female progeny and estimating the repeatability of litter size. Effect of age of ewe on fertility was studied.

Online full textINTERNET
On paper FORUM ; STACKS ; NN08202,277
Keyword(s) (cab) texel
Categories Small Ruminants (Sheep and Goats)
Publication type PhD thesis
Language English
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