Iyiola, A. O., G. N. Akpa, B. I. Nwagu, and I. A. Adeyinka. 2020. “Effect of Maternal Haemoglobin Variants and Lamb Genotype on Pre-Weaning Growth Rate of Sheep of Northern Nigerian and Their Crosses”. Nigerian Journal of Animal Production 40 (1):11-18. https://doi.org/10.51791/njap.v40i1.605.