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Copyright of Arquivo Brasileiro de Medicina Veterinaria e Zootecnia is the property of Universidade Federal de Minas Gerais, Escola de Veterinaria and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Arquivo Brasileiro de Medicina Veterinaria e Zootecnia is the property of Universidade Federal de Minas Gerais, Escola de Veterinaria and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Arquivo Brasileiro de Medicina Veterinaria e Zootecnia is the property of Universidade Federal de Minas Gerais, Escola de Veterinaria and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The observations, for regarded characters, were done on 100 pieces of eggs from each species, obtained from birds of 25 weeks age for the Roso SL hen hybrid and 120 days for the Japanese quail. After the measurements effected on eggs were calculated the phenotypic correlation coefficients. The calculated values of phenotypic correlations' coefficients indicate strong relations between the characters egg weight-egg big diameter (rPXY=0.82) in hen hybrid and between egg diameters-yolk weight (rPXY=0.86) in the Japanese quail. The smallest values of phenotypic correlation coefficients were registered in both species in case of the character couple egg weight-shell weight, with values of 0.51 for the hen egg and 0.56 for the Japanese quail egg. For all analyzed characters' couples, the phenotypic correlation coefficient values are intense (rPXY >0.5) and positive, proving the existence of a pleyotropic genetic determinism for the analyzed features. This fact confirms the possibility of a concurrent selection application on independent selective levels. [ABSTRACT FROM AUTHOR]