Effect of Dwarf (dw) and Frizzle (F) Genes on the Performance of Layers under Senegalese Conditions |
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| Authors: | Missohou A. Dieng A. Horst P. Zarate V.A. Nesseim T. Tchedre K. |
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| Affiliation: | (1) Ecole Inter-Etats des Sciences de Médecine Vétérinaires de Dakar, Service de Zootechnie-Alimentation, BP 5077, Dakar, Senegal;(2) Ecole National Supérieure d'Agriculture de Thiès, Senegal;(3) Institute of Basic Animal Science, Humbolt University of Berlin, Berlin;(4) Institut für Tierproduktion in den Tropen and Subtropen, University of Hohenheim, Stuttgart, Germany |
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| Abstract: | The influence of sex-linked dwarf (dw) and incompletely dominant frizzle (F) genes on growth, egg production and quality were investigated. The experimental stock comprised 100 chicks of four genotypes: normal feathered, normal size (ffDw); normal feathered, dwarf (ffdw); frizzle, normal size (FfDw); and frizzle, dwarf (Ffdw). The dwarf gene reduced the body weight, shank length, feed intake, egg production and egg weight. The frizzle gene also reduced most of these traits, except for egg production, the interaction between the two genes being positive only for growth traits and egg number. Neither of the two genes significantly influenced egg quality. It was concluded that the dwarf gene may have some practical interest in tropical environments, while more needs to be known about the frizzle gene. This revised version was published online in July 2006 with corrections to the Cover Date. |
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| Keywords: | chickens dwarf egg production feathers frizzle gene growth |
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