Haemoglobin Polymorphism in West African Dwarf Goats of Nigeria

This study describes the genetic structure from the haemoglobin (Hb) locus in West African Dwarf (WAD) goat using Cellulose acetate electrophoresis. Three genotypes were identified: the fast haemoglobin named HbA type, theintermediate migration labelled HbAB type and the slow haemoglobin designated HbB type. These genotypes weredetermined by the two co-dominant alleles, HbA and HbB. The two alleles control three haemoglobin genotypes: twohomozygotes, HbAA and HbBB, and one heterozygote, HbAB. The allele HbB had a higher frequency of occurrence(74%) than the allele HbA (26%). The HbBB had a higher incidence in the population (58%) in comparison withtheother two genotypes; the HbAB had a moderate frequency (32%) and HbAA had the least occurrence (10%). Theobserved heterozygosity (0.32) was lower than the expected heterozygosity (0.38) in the current study, the test forHardy-Weinberg equilibrium was not significant (P > 0.05).