Abstract
This research was conducted in order to investigate the effect of age on the eritrogram of 321 female Holstein cattle at Campinas dairy region, São Paulo State, All the animals used in this assay were healthy and free of Leucosis, Tuberculosis, Brucellosis and blood parasites.

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Copyright (c) 1995 Wilmar Sachetin Marçal, Eduardo Harry Birgel, José Luiz Dangelino, Marcelo Galhardo
