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International Journal of Poultry Science 3 ( 11 ): 671 - 684 , 2004
F. J. Bavelaar and A.C. Beynen
International Journal of Poultry Science 3 ( 11 ): 690 - 696 , 2004
F. J. Bavelaar, R. Hovenier, A.G. Lemmens and A.C. Beynen
International Journal of Poultry Science 3 ( 11 ): 704 - 714 , 2004