Bibliografia

Lewis, A. J., Lee Southern, L. (2001) Swine Nutrition 2nd edition. CRC Press. USA. null
Whittemore, C. T. (1993) The science and practice of pig production. Longman Scientific and Technical, Longman Group Essex CM202JE, England. null
Hunton, P. (Ed). (1995) Poultry Production. Elsevier, Amsterdam null
Leeson, S. and J. D. Summers. (2001) Scott’s Nutrition of the Chicken (4th ed). University Books. Guelph, Canada. null

Institut Technique du Porc. (2000) Mémento de l’éleveur de Porc. 5éme édition. Institut Technique du Porc, Paris. null
NRC. (1998) Nutrient requirements of swine. 10th edition. National Academy Press, Washington DC. null
Crawford, R. D. (1990) Poultry Breeding and Genetics. Elsevier. Canada. null
Etches, R. J. (1996) Reproduction in Poultry. CAB International. Guelph, Ontario, Canada. null
National Research Council, (1994) Nutrient Requirements of Poultry (9th ed). null