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Elsevier‎(1999)‎

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By Cloete S.W.P.   Bunter K.L.   Lambrechts H.   Brand Z.   Swart D.   Greyling J.P.C.   in British Poultry Science

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Taylor & Francis Ltd‎(2006)‎

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By Schalkwyk S. J. Van   Cloete S. W. P.   Brown C. R.   Brand Z.   in British Poultry Science

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Taylor & Francis Ltd‎(2000)‎

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