BISCARINI, F. (2010) Genetic analysis of production, immunity and behavior in laying hens. Wageningen UR, PhD thesis.
BRAMBELL COMMITTEE (1965) Report of the Technical Committee to Enquire into the Welfare of Animals kept under Intensive Livestock Husbandry Systems, the Brambell Report, December 1965 (HMSO London, ISBN 0 10 850286 4). http://www.defra.gov.uk/fawc/about/five-freedoms/. BRIGHT, A. and JOHNSON, E.A. (2011) Smothering in commercial laying hens: a preliminary investigation. Veterinary Record doi: 10.1136/vr.c7462. www.veterinaryrecord.bmj.com.
BUITENHUIS, H. (2003) Wageningen UR, Genetic analysis of feather pecking behaviour in laying hens. PhD Thesis.
CALIFORNIA (2008) Proposition 2 (2008).
CARTER, C.T. (1964) Modern trends in animal health and husbandry: poultry breeding. British Veterinary Journal 120: 506-517.
COMSTOCK, R.E., ROBINSON, H.F. and HARVEY, P.H. (1949) A breeding procedure to make maximum use of both general and specific combining ability. Agronomy Journal 41: 360.
CRAIG, J.V. AND ADAMS and A.W. (1984) Behaviour and Well-being of Hens (Gallus Domesticus) in Alternative Housing Environments. World's Poultry Science Journal 40: 221-240.
CRAWFORD, R.D. (1990) Poultry breeding and genetics. Elsevier.
DAMME, K., URSELMANS, S., SCHNEIDER, M. and HILDEBRAND, R-A. (2010) 8th Bavarian Random Sample Test of Layers in Floor Housing. LfL-Information. Bayerische Landesanstalt für Landwirtschaft, Germany.
DAMME, K., URSELMANS, S., SCHNEIDER, M. and HILDEBRAND, R-A. (2014) 10th Bavarian Random Sample Test of Layers in Floor Housing. LfL-Information. Bayerische Landesanstalt für Landwirtschaft, Germany.
ELLEN, E.D. (2009) Genetics of survival in cannibalistic laying hens: the contribution of social effects. Wageningen UR, PhD thesis.
ELWINGER, K., TUFVESSON, M., LAGERKVIST, G. and TAUSON, R. (2008) Feeding layers of different genotypes in organic feed environments. British Poultry Science 49: 654-665.
ERIKSSON, H., NYMAN, A.K., FELLSTRÖM, C. and WALLGREN, P. (2013) Erysipelas in laying hens is associated with housing system. Veterinary. Record 2013, July 6.
EUROPEAN UNION (1999) Council Directive 1999/4/EC.
FLOCK, D.K. (2009) Poultry breeding - the next 25 years. World Poultry 25: 22-23.
FLOCK, D.K., LAUGHLIN, K.F. and BENTLEY, J. (2005) Minimizing losses in poultry breeding and production: how breeding companies contribute to poultry welfare. World's Poultry Science Journal 61: 227-237.
FÖLSCH, D.W., HUBER, H-U., BÖLTER, U. and GOZZOLI, I. (1988) Research on alternatives to the battery systems for laying hens. Applied Animal Behaviour Science 20: 29-45.
FOSSUM, O., JANSSON, D.S., ENGELSEN ETTERLIN, P. AND VÄGSHOLM and I. (2009) Causes of mortality in laying hens in different housing systems in 2001 to 2004. Acta Veterinaia Scandinavia 51: 3.
GRIFFING, B. (1956) Concept of general and specific combining ability in relation to diallel crossing systems. Australian Journal of Biological Sciences 9: 463.
HAGEDOORN, A.L. (1927) An improved method of testing the quality of a breeder's entire flock. Proceedings 3rd World Poultry Congress. Cited in: Hartmann, W., 1985. World's Poultry Science Journal 41: 153-159.
HAZEL, L.N. (1943) The genetic basis for constructing selection indexes. Genetics 28: 476.
HAZEL, L.N. and LUSH, J.L. (1942) The efficiency of three methods of selection. The Journal of Heredity 33: 393.
HENDERSON, C.R. (1953) Estimation of variance and covariance components. Biometrics 9: 226-252.
HENDERSON, C.R. (1976) A simple method for computing the inverse of a numerator relationship matrix used in prediction of breeding values. Biometrics 32: 69-83.
HIERDEN, Y.M. (2003) Behavioral neurobiology of feather pecking. Wageningen UR, PhD thesis.
HUTT, F.B. (1949) Genetics of the fowl. McGraw Hill, New York.
ICKEN, W., CAVER, D., SCHMUTZ, M. and PREISINGER, R. (2012) New phenotypes for new breeding goals in layers. World's Poultry Science Journal 68: 387-399.
KETELAARS, E.H. (1992) Historie van de Nederlandse pluimveehouderij; van kippenboer tot specialist.
LAYWEL (2003) European research program on welfare of laying hens in alternative housing systems. www.laywel.eu.
LAY, D.C. Jr, FULTON, R.M., HESTER, P.Y., KARCHER, D.M., KJAER, J.B., MENCH, J.A., MULLENS, B.A., NEWBERRY, R.C., NICOL, C.J., O'SULLIVAN, N.P. and PORTER, R.E. (2011) Hen welfare in different housing systems. Poultry Science 90: 278-294.
LEENSTRA, F.R., MAURER, V., BESTMAN, M., VAN SAMBEEK, F., ZELTNER, E., REUVEKAMP, B., GALEA, F. And VAN NIEKERK and T. (2012) Performance of commercial laying hen genotypes on free-range and organic farms in Switzerland, France and The Netherlands. British Poultry Science 53: 282-290.
LEENSTRA, F.R., MAURER, V., GALEA, F., BESTMAN, M., AMSLER-KEPALAITE, Z., VISSCHER, J., VERMEIJ, I. And VAN KRIMPEN and M. (2014) Laying hen performance in different production systems; why do they differ and how to close the gap? Results of discussions with groups of farmers in The Netherlands, Switzerland and France, benchmarking and model calculation. European Poultry Science 78: 1399/eps2104.53.
LEINONEN, I., WILLIAMS, A.G., WISEMAN, J., GUY, J. and KYRIAZAKIS, I. (2012) Predicting the environmental impacts of chicken systems in the United Kingdom through a life cycle assessment: Egg production systems. Poultry Science 91: 26-40.
LEYENDECKER, M., HAMANN, H., HARTUNG, J., KAMPHUES, J., RING, C., GLUNDER, G., AHLERS, C., SANDER, I., NEUMANN, U. and DISTL, O. (2001) Analysis of genotype-environment interactions between layer lines and hen housing systems for performance traits, egg quality and bone breaking strength - 2nd communication: Egg quality traits. Züchtungskunde 72: 308-329.
MEUWISSEN, T.H.E., HAYES, B.J. and GODDARD, M.E. (2001) Prediction of total genetic value using genome-wide dense marker maps. Genetics 157: 1819.
MICHIGAN (2009) House Bill 5127 (2008).
MUIR, W.M., WONG, G.K.S., ZHANG, Y., WANG, J., GROENEN, M.A., CROOIJMANS, R.P. and CHENG, H.H. (2008) Genome-wide assessment of worldwide chicken SNP genetic diversity indicates significant absence of rare alleles in commercial breeds. Proceedings of the National Academy of Sciences 105 (45): 17312-17317.
MULDER, H.A., HILL, W.G., VEREIJKEN, A. and VEERKAMP, R.F. (2009) Estimation of genetic variation in residual variance in female and male broiler chickens. Animal 3: 1673-1680.
NEETESON-VAN NIEUWENHOVEN, A.M., KNAP, P. and AVENDAÑO, S. (2013) The role of sustainable commercial pig and poultry breeding for food security. Animal Frontiers 3: 52-57.
QUAAS, R.L. (1976) Computing the diagonal elements and inverse of a large numerator relationship matrix. Biometrics 32: 949-953.
RIEDSTRA, B.J. (2003) Development and social nature of feather pecking. Wageningen UR, PhD thesis.
RODENBURG, T.B. (2003) Feather pecking and related behavioral characteristics in laying hens. Wageningen UR, PhD thesis.
SINGH, R., CHENG, K.M. and SILVERSIDES, F.G. (2009) Production performance and egg quality of four strains of laying hens kept in conventional cages and floor pens. Poultry Science 88: 256-264.
SPOELSTRA, S.F., GROOT KOERKAMP, P.W.G., BOS, A.P., ELZEN, B. and LEENSTRA, F.R. (2013) Innovation for sustainable egg production: realigning production with societal demands in The Netherlands. World's Poultry Science Journal 69: 279-298.
STAR, L. (2008) Robustness in laying hens: influence of genetic background, environment & early-life experiences. Wageningen UR, PhD thesis.
TIXIER-BOICHARD, M., LEENSTRA, F.R., FLOCK, D., HOCKING, A.D. and WEIGEND, S. (2012) A century of poultry genetics. World's Poultry Science Journal 68: 307-321.
TŮMOVA, E., ENGLMAIEROVA, M., LEDVINKA, Z. and CHARVATOVA, V. (2011) Interaction between housing system and genotype in relation to internal and external egg quality parameters. Czech Journal of Animal Science 56: 490-498.
UITDEHAAG, K. (2008) Effects of genetic background and social environment on feather pecking and related behavioural characteristics in laying hens. Wageningen UR, PhD thesis.
VAN HORNE, P., BELL, D., NYBERG LARSEN, J. and YDING, L. (2014) 50 years of development in the egg industry. International Egg Commission, annual review, September 2014.
WINDHORST, H.W. (2015) Housing Systems in Laying Hen Husbandry; Development, present situation and perspectives. International Egg Commission, Business meeting Lisbon April 12-14, 2015.