Fig. 2From: Net protein and metabolizable protein requirements for maintenance and growth of early-weaned Dorper crossbred male lambsRelationship between N retention (NR) and metabolizable protein intake (MPI) of Dorper × thin-tailed Han crossbred male lambs from 20 to 35 kg of BW. NR, g/kg SBW0.75 = − 0.628 (±0.138) + [0.139 (±0.020) × MPI, g/kg SBW0.75], R 2 = 0.70, RMSE = 0.096, n = 28Back to article page