Genetic parameters for somatic cell count (SCC) and milk production traits of Guzerá cows using data normalized by different procedures.

This study aimed to estimate the genetic parameters for somatic cell count (SCC) and the genetic association between SCC and milk production traits using two different methods of SCC normalization. The dataset contained information on 8870 lactation records of 6172 Guzerá dairy cows selected for dual-purpose from 95 herds. The lactation means of SCC were normalized in two ways: (a) SCC = log (SCC) and (b) SCC = log (SCC/100) + 3.