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Heifer Age (mo)
% of Mature Body Weight
Small Breeds
Medium Breeds
Large Breeds
Birth
6.2
28
34
47
1
9.1
41
50
68
2
12.3
55
92
3
16.2
73
89
122
4
20.0
90
110
150
5
23.7
107
130
178
6
27.5
124
151
206
7
31.2
140
172
234
8
35.0
158
193
263
9
38.9
175
214
291
10
42.5
191
319
11
46.3
208
255
347
12
49.9
224
274
374
13
53.7
242
295
403
14
57.4
258
316
430
15
61.1
275
336
458
16
64.7
356
485
17
68.5
308
377
513
18
72.2
325
397
541
19
76.0
342
418
570
20
79.6
358
438
597
21
83.3
375
625
22
87.1
392
479
653
23
90.8
409
499
681
