Composite beef cattle

Genetic characterization of European-Zebu composite bovine using RFLP markers

E. Perez Marson, Ferraz, J. Bento Ster, Meirelles, F. Vieira, Balieiro, J. César de, Eler, J. Pereira, Figueiredo, L. Gustavo Gi, and Mourão, G. Barreto, Genetic characterization of European-Zebu composite bovine using RFLP markers, vol. 4, pp. 496-505, 2005.

A population of 370 European-Zebu composite beef heifers, consisting of six different breed compositions (A-F), were characterized genetically, using RFLP markers of luteinizing hormone receptor (LHR) and follicle-stimulating hormone receptor (FSHR) genes. Our objectives were to genetically characterize this population and to determine the structure and the genetic variability of this hybrid herd. The genotypes were determined through PCR, followed by digestion with restriction endonucleases.

Genetic parameters for growth traits of a Brazilian Bos taurus x Bos indicus beef composite

G. B. Mourão, Ferraz, J. B. S., Eler, J. P., Balieiro, J. C. C., Bueno, R. S., Mattos, E. C., and Figueiredo, L. G. G., Genetic parameters for growth traits of a Brazilian Bos taurus x Bos indicus beef composite, vol. 6, pp. 1190-1200, 2007.

The genetic analysis of composite data is very complicated, mainly because it is necessary to adjust data to the effects of heterosis and breed complementarity, and because there is usually considerable confounding of these data with several other effects, such as contemporary group effects, breed composition of the animal and maternal breed composition, among others.

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