Table 1.
Number of records analyzed for each female fertility trait in three cattle breeds
| Trait 1 | Nordic Holstein | Nordic Red | Jersey |
|---|---|---|---|
| AISC |
3,380 |
4,629 |
1,127 |
| AISH |
3,465 |
4,436 |
1,147 |
| ICF |
3,384 |
4,613 |
1,132 |
| IFLC |
3,394 |
4,637 |
1,135 |
| IFLH |
3,464 |
4,432 |
1,145 |
| NRRC |
3,394 |
4,636 |
1,133 |
| NRRH |
3,465 |
4,437 |
1,148 |
| FTI | 3,475 | 4,719 | 1,156 |
1AIS: number of inseminations per conception, NRR: 56-day non-return rate, IFL: days from first to last insemination, ICF: length in days of the interval from calving to first insemination, FTI: fertility index. C and H denote whether the trait has been measured in cows or heifers, respectively.