Pauletti, Patricia, Raul Machado Neto, Irineu Umberto Packer, and Rosana Bessi. 2002. “Evaluation of Levels of Serum Immunoglobulins, Proteins and the Performance of Holstein Heifers”. Pesquisa Agropecuaria Brasileira 37 (1):89-94. https://doi.org/10.1590/S1678-3921.pab2002.v37.6313.