Research Article

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M.H. Van Melis; L.G.G. Figueiredo; H.N. Oliveira; J.P. Eler; G.J.M. Rosa; M.L. Santana; F.M. Rezende; J.B.S. Ferraz
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Beef cattle; Genetic and phenotypic correlation; Heritability; Maternal effect; Suizo cattle; Weight gain

The objective of this study was to estimate genetic parameters for pre-weaning traits of Braunvieh cattle raised under tropical conditions in Brazil. The weight and weight gain parameters were birth weight (BW, N = 9955), weight at 120 days of age (W120, N = 5901), weaning weight at 205 days (WW, N = 6970), weight gain from birth to 205 days (GAIN205, N = 6013), weight gain from birth to 120 ... more

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Beef cattle; Breeding efficiency; Longevity; Selection

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Beef cattle production requires reproductive efficiency. However, measures of reproductive traits are not usually collected; consequently, correlated traits that could be used as indicators would be useful. We examined associations between measures of reproductive and productive efficiency that could be used as selection indicators. Data from 194 dams of the genetic groups Angus x Nelore ... more

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Genetic correlation; Heritability; Repeatability; Selection

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Beef cattle; Heritability; Selection; Tropics; Weights

(Co)variance components and genetic parameters were estimated for body weights of an elite Brahman herd under a designed, supervised management and genetic program, including strategic artificial insemination (AI). Restricted maximum likelihood methods were used with a univariate animal model for birth weight (BW) and a bivariate model for weaning weight (205-day weight, 205W) and 18 ... more

D. Plasse; O. Verde; J. Arango; L. Camaripano; H. Fossi; R. Romero; C.Rodriguez M.; J.L. Rumbos
10/28/2008
Beef cattle; Crossbreeding; Heterosis; performance

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G.B. Mourão; J.B.S. Ferraz; J.P. Eler; R.S. Bueno; J.C.C. Balieiro; E.C. Mattos; L.G.G. Figueiredo

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