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AA Mendes ; AA Ramos ; DF Pereira ;Revista Brasileira de Ciência Avícola 2012, 14 4

Autor: IS Patricio

Fuente: http://www.redalyc.org/


Introducción



Revista Brasileira de Ciência Avícola ISSN: 1516-635X revista@facta.org.br Fundação APINCO de Ciência e Tecnologia Avícolas Brasil Patricio, IS; Mendes, AA; Ramos, AA; Pereira, DF Overview on the performance of Brazilian broilers (1990 to 2009) Revista Brasileira de Ciência Avícola, vol.
14, núm.
4, diciembre, 2012, pp.
233-238 Fundação APINCO de Ciência e Tecnologia Avícolas Campinas, SP, Brasil Available in: http:--www.redalyc.org-articulo.oa?id=179725221001 How to cite Complete issue More information about this article Journals homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative Brazilian Journal of Poultry Science Revista Brasileira de Ciência Avícola ISSN 1516-635X Oct - Dec 2012- v.14 - n.4 - 233-304 Overview on the Performance of Brazilian Broilers (1990 to 2009) Review Author(s) Patricio I S1 Mendes A A2 Ramos A A2 Pereira DF3 Poultry production consultant Professor, UNESP CAMPUS BOTUCATU 3 Professor, UNESP CAMPUS TUPÃ 1 2 ABSTRACT This article describes the genetic evolution of commercial broilers between 1990 and 2009, considering live performance, in particular, in terms of weight gain and feed conversion ratio.
In order to determine if the assumption that the relationship between body weight gain and feed conversion ratio is increasing and positive, information on all broiler strains reared in Brazil were collected from several companies present in five Brazilian regions.
This survey aimed at evaluating broiler live performance as a function of genetic improvement with time. Broiler performance improved, as shown by the statistical differences obtained for the following parameters: livability, live weight, daily weight gain, feed conversion ratio, and production efficiency index between 1990 and 2009.
However, live weight gain and feed conversion ratio are emphasized...





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