While this coincides with the physiologic timing of hemoglobin class switching, lower HGB and MCH, the correlation of HGB, MCH and HCT with elliptocyte and dacryocyte percentages, and higher PLT counts support the hypothesis that MOD-MKD poikilocytosis in young goats may be associated with iron deficiency, an important cause of poikilocytosis (2, 10, 11). The gene discussed is PMCH; the disease is nutritional disorder.