Garba, H., Musa, J., Egena, S. .S. A. and Alemede, I. C. (2020) “ Evaluation of haemoglobin variants of Red Sokoto goats and Yankasa sheep in Beji, Niger State, Nigeria: Effect on body weight and reproductive parameters”, Nigerian Journal of Animal Production, 44(4), pp. 38–47. doi: 10.51791/njap.v44i4.567.