Table 1 Number of cows by herd and lactation number in the studied population
Lactation number | Number of cows | ||||
|---|---|---|---|---|---|
Herd A | Herd B | Herd C | Herd D | Total | |
1 | 36 | 70 | 445 | 51 | 602 |
2 | 37 | 161 | 462 | 63 | 723 |
3 | 23 | 75 | 237 | 48 | 383 |
4 | 24 | 57 | 191 | 32 | 304 |
5 | 7 | 34 | 86 | 17 | 144 |
6 and more | 5 | 19 | 108 | 17 | 149 |
Total | 132 | 416 | 1529 | 228 | 2305 |