Genetic and environmental factors affecting serum macrominerals and weights in an Angus-Brahman multibreed herd: I. Additive and nonadditive group genetic effects of serum calcium, phosphorus, and magnesium and weight at weaning1

摘要: Amounts of serum calcium, phosphorus, and magnesium at weaning (WCa, WP, WMg, respectively) weights (WW) were obtained from 380 Angus (A), Brahman (B), A x B calves various expected fractions reared the Pine Acres Research Station University Florida, Citra 1989 to 1990. Calves produced by mating A, .75A, .25B, .5A .5B, .25A .75B, B, Brangus (.625A .375B) sires dams same breed fractions, except for .75B dams. Best linear unbiased estimates (BLUE) genetic effects, expressed as regression coefficients, 1) -15.07 +/- 13.65 mg WCa, -11.21 12.07 -1.23 2.99 .66 1.18 kg WW difference between additive direct; 2) 9.79 6.94 -5.72 6.14 1.64 1.52 .52 .60 maternal; 3) 242.21 51.56 66.67 45.62 52.16 11.27 22.61 4.44 nonadditive 4) 373.63 38.44 93.96 34.02 69.90 8.41 36.83 3.31 maternal. Nonadditive (A B) effects main factors affecting total (sum plus nonadditive) in this multibreed population. Total used rank group sire dam combinations.(ABSTRACT TRUNCATED AT 250 WORDS)