2010). Other factors, including health status, stress, sex, age, co‐parasitic infection and environmental changes, might also be responsible for low Hb value in T. gondii‐infected sheep (Ramprabhu et al. 2010). Decreased erythrocyte count and low haemoglobin concentration are responsible for anaemia during Toxoplasma infection (Iewida & Cabanacan‐Salibay 2010). This evidence concerns the gene GSTM1 and anemia.