Crude Protein Requirements of Mature Beef Cows

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

Estimated Average Crude Protein Requirement:^a Protein Consumed, in lb (kg) per cow per day

1

1.93 (0.88)

2.12 (0.96)

2.29 (1.04)

2.46 (1.12)

2.65 (1.20)

2

2.57 (1.17)

2.75 (1.25)

2.93 (1.33)

3.10 (1.41)

3.19 (1.45)

3

2.62 (1.19)

2.80 (1.27)

2.98 (1.35)

3.15 (1.43)

3.32 (1.51)

4

2.43 (1.10)

2.62 (1.19)

2.80 (1.27)

2.97 (1.35)

3.19 (1.45)

5

2.20 (1.00)

2.38 (1.08)

2.56 (1.16)

2.73 (1.24)

2.92 (1.32)

6

1.98 (0.90)

2.16 (0.98)

2.33 (1.06)

2.50 (1.13)

2.62 (1.19)

7

1.80 (0.82)

1.99 (0.90)

2.16 (0.98)

2.33 (1.06)

2.35 (1.07)

8

1.32 (0.60)

1.50 (0.68)

1.68 (0.76)

1.85 (0.84)

2.16 (0.98)

9

1.38 (0.63)

1.56 (0.71)

1.74 (0.79)

1.91 (0.87)

2.07 (0.94)

10

1.49 (0.68)

1.67 (0.76)

1.85 (0.84)

2.02 (0.92)

2.18 (0.99)

11

1.67 (0.76)

1.85 (0.84)

2.02 (0.92)

2.19 (0.99)

2.36 (1.07)

12

1.94 (0.88)

2.13 (0.97)

2.30 (1.04)

2.47 (1.12)

2.64 (1.20)