Crude Protein Requirements of Growing and Finishing Beef Cattle
Average Daily Gain (lb/head/day) | |||||
|---|---|---|---|---|---|
Weight (lb) | 0 | 1 lb (0.45 kg) | 2 lb (0.91 kg) | 3 lb (1.36 kg) | 4 lb (1.81 kg) |
Crude Protein Requirement: Protein Consumed, in lb (kg)/day | |||||
200 lb (91 kg) | 0.38 (0.17) | 0.83 (0.38) | 1.28 (0.58) | 1.73 (0.78) | 2.17 (0.98) |
400 lb (181 kg) | 0.63 (0.29) | 1.09 (0.49) | 1.53 (0.69) | 1.97 (0.89) | 2.39 (1.08) |
600 lb (272 kg) | 0.84 (0.38) | 1.31 (0.59) | 1.75 (0.79) | 2.19 (0.99) | 2.59 (1.17) |
800 lb (363 kg) | 1.06 (0.48) | 1.53 (0.69) | 1.97 (0.89) | 2.39 (1.08) | 2.81 (1.27) |
1,000 lb (454 kg) | 1.25 (0.57) | 1.75 (0.79) | 2.19 (0.99) | 2.61 (1.18) | 3.02 (1.37) |
1,200 lb (544 kg) | 1.44 (0.65) | 1.97 (0.89) | 2.42 (1.10) | 2.84 (1.29) | 3.25 (1.47) |
1,400 lb (635 kg) | 1.61 (0.73) | 2.20 (1.00) | 2.69 (1.22) | 3.11 (1.41) | 3.52 (1.60) |
aValues adapted from the National Academies of Sciences, Engineering, and Medicine. Nutrient Requirements of Beef Cattle. 8th rev. ed. National Academies Press; 2016, calculated for an animal with an unshrunk mature weight of 1,400 pounds (635 kg). Estimates are based on the assumptions that nitrogen and energy are not limiting factors in the rumen and that 64% of the dietary crude protein will be available to the animal as metabolizable protein, which may not be true for all rations or all scenarios. | |||||