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Metabolizable Protein Requirements of Mature Beef Cows

Metabolizable Protein Requirements of Mature Beef Cows

Weight of Cow

1,000 lb (454 kg)

1,200 lb (544 kg)

1,400 lb (635 kg)

1,600 lb (726 kg)

1,800 lb (816 kg)

Number of Months Since Calving

Average Metabolizable Protein Requirement:a Protein Consumed, in lb (kg) per cow per day

1

1.24 (0.56)

1.36 (0.62)

1.47 (0.67)

1.57 (0.71)

1.70 (0.77)

2

1.64 (0.74)

1.76 (0.80)

1.88 (0.85)

1.98 (0.90)

2.04 (0.93)

3

1.68 (0.76)

1.79 (0.81)

1.91 (0.87)

2.02 (0.92)

2.12 (0.96)

4

1.56 (0.71)

1.68 (0.76)

1.79 (0.81)

1.90 (0.86)

2.04 (0.93)

5

1.41 (0.64)

1.52 (0.69)

1.64 (0.74)

1.75 (0.79)

1.87 (0.85)

6

1.27 (0.58)

1.38 (0.63)

1.49 (0.68)

1.60 (0.73)

1.68 (0.76)

7

1.15 (0.52)

1.27 (0.58)

1.38 (0.63)

1.49 (0.68)

1.51 (0.68)

8

0.84 (0.38)

0.96 (0.44)

1.07 (0.49)

1.18 (0.54)

1.38 (0.63)

9

0.88 (0.40)

1.00 (0.45)

1.11 (0.50)

1.22 (0.55)

1.32 (0.60)

10

0.95 (0.43)

1.07 (0.49)

1.18 (0.54)

1.29 (0.59)

1.40 (0.64)

11

1.07 (0.49)

1.18 (0.54)

1.29 (0.59)

1.40 (0.64)

1.51 (0.68)

12

1.24 (0.56)

1.36 (0.62)

1.47 (0.67)

1.58 (0.72)

1.69 (0.77)

aValues adapted from the National Academies of Sciences, Engineering, and Medicine. Nutrient Requirements of Beef Cattle. 8th rev. ed. National Academies Press; 2016.