Haemoglobin polymorphism in Norwegian Red Cattle

Summary.By the use of isoelectric focusing in polyacrylamide gels and the Immobiline method at pH range 7.1–7.7, three haemoglobin (Hb) phenotypes were observed in Norwegian Red Cattle. Two one‐band phenotypes named HbA4and HbA6occurred in unequal proportions in their two‐band combination type with the cathodal HbA6being the stronger. In 76 dam‐offspring pairs the distribution of phenotypes were in agreement with codominant single gene inheritance. In an unselected material of 140 animals, gene frequencies were HbA4=0.94 and HbA6=0.06.