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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A genome-wide association of natural antibodies binding keyhole limpet hemocyanin in chickens reeals major QTL on chromosome 4 for IgM isotype
Berghof, T.V.L. ; Parmentier, H.K. ; Arts, J.A.J. ; Hulzebosch, A.A. ; Poel, J.J. van der; Vereijken, Addie ; Visker, M.H.P.W. ; Bovenhuis, H. - \ 2017
Genetic and environmental effects on individual wavenumbers of bovine milk infrared spectra
Wang, Q. ; Hulzebosch, A.A. ; Bovenhuis, H. - \ 2016
In: Book of Abstracts of the 67st Annual Meeting of the European Federation of Animal Science. - Wageningen Academic Publishers (Book of abstracts 22) - ISBN 9789086862849 - p. 301 - 301.
A genome-wide association study of natural antibodies binding keyhole limpet hemocyanin in chickens reveals major QTL on chromosome 4 for IgM isotype
Berghof, T.V.L. ; Parmentier, H.K. ; Arts, J.A.J. ; Hulzebosch, A.A. ; Poel, J.J. van der; Vereijken, Addie ; Visker, M.H.P.W. ; Bovenhuis, H. - \ 2016
Genetic and environmental variation in bovine milk infrared spectra
Wang, Qiuyu ; Hulzebosch, Alex ; Bovenhuis, Henk - \ 2016
Journal of Dairy Science (2016). - ISSN 0022-0302 - p. 1 - 11.
Bovine milk - FTIR wavenumbers - Genetic polymorphisms - Herd - Heritability

Fourier transform infrared (FTIR) spectroscopy is widely used to determine milk composition. In this study, 1,060 milk infrared wavenumbers ranging from 925 to 5,008 cm-1 of 1,748 Holstein Friesian cows on 371 herds in the Netherlands were available. The extent to which infrared wavenumbers are affected by genetic and environmental factors was investigated. Inter-herd heritabilities of 1,060 infrared wavenumbers ranged from 0 to 0.63, indicating that the genetic background of infrared wavenumbers differs considerably. The majority of the wavenumbers have moderate to high inter-herd heritabilities ranging from 0.20 to 0.60. The diacylglycerol O-acyltransferase 1 (DGAT1), stearoyl-CoA desaturase (SCD1), κ-casein (CSN3), and β-lactoglobulin (LGB) polymorphisms are known to have a large effect on milk composition, and therefore we studied the effects of these polymorphisms on infrared wavenumbers. The DGAT1 polymorphism had highly significant effects on many wavenumbers. In contrast, the SCD1 polymorphism did not significantly affect any of the wavenumbers. The SCD1 is known to have a strong effect on the content of C10:1, C12:1, C14:1, and C16:1 fatty acids. Therefore, these results suggest that FTIR spectra contain little direct information on these monounsaturated fatty acids. The CSN3 and LGB polymorphisms had significant effects on a few wavenumbers. Differences between herds explained 10 to 25% of the total variance for most wavenumbers. This suggests that the wavenumbers of milk FTIR spectra are indicative for differences in feeding and management between herds. The wavenumbers between 1,619 and 1,674 cm-1 and between 3,073 and 3,667 cm-1 are strongly influenced by water absorption and usually excluded when setting up prediction equations. However, we found that some of the wavenumbers in the water absorption region are affected by the DGAT1 polymorphism and lactation stage. This suggests that these wavenumbers contain useful information regarding milk composition.

Genetics and Technology: Genetic Effects on Bovine Milk Infrared Spectra
Wang, Q. ; Hulzebosch, A.A. ; Bovenhuis, H. - \ 2016
Bovine Milk - Infrared Spectra
Genetic and environmental effects on individual wavenumbers of bovine milk InfraRed spectra
Wang, Q. ; Hulzebosch, A.A. ; Bovenhuis, H. - \ 2015
- 1 p.
Bovine Milk - Genetic - Environmental effects
Cruciale rol voor uv
Reuvekamp, B.F.J. ; Niekerk, T.G.C.M. van; Gunnink, H. ; Hulzebosch, R. ; Kremer, A. - \ 2010
De Pluimveehouderij 40 (2010)14. - ISSN 0166-8250 - p. 26 - 27.
pluimveehouderij - hennen - eierproductie - biologische landbouw - daglicht - dierenwelzijn - legresultaten - diergedrag - ultraviolette straling - poultry farming - hens - egg production - organic farming - daylight - animal welfare - laying performance - animal behaviour - ultraviolet radiation
Wageningen UR Livestock Research heeft een inventarisatie op leghennenpraktijkbedrijven uitgevoerd ter vergroting van de kennis over het effect van daglicht op het gedrag, het exterieur en de technische resultaten van biologische leghennen. Dit onderzoek naar daglicht doet vermoeden dat meer direct daglicht gunstig uitpakt voor de leghennen.
Calving performance in dairy cattle. Influence of maternity of the dam on the correlation between direct and indirect effects.
Groen, A.F. ; Aubel, J.P.J.M. van; Hulzebosch, A.A. - \ 1998
In: Proc. 6th World Congress on Genetics Applied to Livestock Production, Armidale, Australia. Volume 23 - p. 387 - 390.
On-line sorting of pot plants with a neural network classifier
Timmermans, A.J.M. ; Hulzebosch, A.A. - \ 1995
In: Transactions of 2nd IFAC/IFIP/EurAgEng workshop on Artificial Intelligence in Agriculture, Wageningen, NL, May 29-31
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