Effects of haemoglobin and transferrin polymorphisms on the performance ofAwassi and crossbred ewes under subtropic environment.

Performance (lactation milk yield, prolificacy, fertility and litter size) and polymorphisms of two biochemical systems (haemoglobin and transferrin) of pure Awassi and Cukurova Assaf (C. Assaf, 5/8 Awassi + 3/8 East Friesan) and influences of Hb, Tf titred groups on performances of two genotypes we re examined. Performance of Awassi and C. Assaf ewes were significantly dif ferent. Furthermore, there was significant difference between lamb weights at birth and weaning (P <0.01), while no significant differences between ha emoglobin and transferrin types of pure Awassi and C. Assaf (P >0.05) were found. It was confirmed that haemoglobin and transferrin polymorphisms were found to be effective on the performances of Awassi and Cukurova Assaf bre eds.