Genetic Analysis of the Serum Level of IgG2 and Total Protein in Red Danish Cattle
- 1 March 1975
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Animal Science
- Vol. 40 (3) , 392-396
- https://doi.org/10.2527/jas1975.403392x
Abstract
Concentrations of the total protein and the immunoglobulinsubclass IgG2 in serum were determined from unselected half-sib groups of registered herds of Red Danish Cattle. The sampling was made in April 1972, comprising individuals from 4 to 38 months of age. Correction for age reduced the variance for total protein and IgG2 by 11 and 12%, respectively. Higher ages, in both cases, corresponded with higher values. The serum-IgG2 concentration corrected for total protein and age showed an almost normal distribution ranging from about 0 mg/100 ml to more than 700 mg/100 ml. The simple correlation between total protein and IgG2 in serum was .49. However, this includes some autocorrelation. Heritability estimates of the two traits suggested a slight genetic influence on total protein (h2 = .09 ± .07) and IgG2 (h2 = .12 ± .08).Keywords
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