Genetic and Environmental Factors Affecting Serum Macrominerals and Weights in an Angus-Brahman

Heritabilities of and genetic, envicovariance components. Estimates of heritability ronmental, and phenotypic correlations among were .39 (WCa), .40 (WP), .36 (WMg), and .35 (WW). serum amounts of calcium, phosphorus, and magEstimates of genetic, environmental, and phenonesium and weight at weaning (WCa, WP, WMg, typic correlations were .66, .55, .57 (WCa, WP), .70, and WW, respectively) were estimated for an .71, .70 (WCa, WMg), 1.00, .86, 38 (WCa, WW), .50, Angus (A)-Brahman(B) multibreed herd located at .51, .51 (WP, WMg), .78, .60, .63 (WP, WW), and .86, the Pine Acres Research Station of the University .73, .75 (WMg, WW). These correlations indicate of Florida, Citra. Records were obtained from 380 that serum Ca, P, and Mg could be used in calves produced by mating A, .75A .25B, .5A .5B, multiple-trait genetic evaluation procedures to .25A .75B, B, and Brangus sires across dams of the help identify animals that require low amounts of same breed groups, except for .25A .75B, during these macrominerals for preweaning growth. This 1989 and 1990. Restricted maximum likelihood may prove advantageous in mineral-deficient procedures were used to compute variance and regions.