Improving fertility will therefore shorten the calving interval, increase the lifetime of a cow, lower insemination efforts and reduce veterinary treatments. Since 2010, the calving interval of cows in the Netherlands has been reduced by 10 days to 407 . Fertility is one of the building blocks of CRV Health.
Fertile cows show their heat on time and get pregnant quickly and easily. Good daughter fertility is essential for the continuity of the herd and the farm income.
| Results daughter fertility (index) | 104 | 108 | 112 |
|---|---|---|---|
| Shorter calving interval days | 6.7 days | 13.4 days | 20.1 days |
| Better non-return% | +2.9% | +5.7% | +8.6% |
| Gain* / 100 cows / year | € 770.- | € 1,541.- | € 2,311.- |
* Calculation is based on € 1.15 per day Calving interval days
Top 10 Black and white bulls Daughter fertility*
| Name | Daughter Fertility | % CRV Health | % CRV Efficiency |
|---|---|---|---|
| Bonjour | 112 | 10 | 9 |
| Treasure | 110 | 10 | 7 |
| Nippon P | 109 | 9 | 11 |
| Starmaker | 108 | 10 | 7 |
| Jupiler | 107 | 8 | 13 |
| Prominent | 106 | 10 | 8 |
| Trevor | 106 | 5 | 14 |
| Sturdy | 106 | 7 | 2 |
| Bouncer | 106 | 4 | 7 |
| Jayvona RF | 106 | 6 | 10 |
*based on index run August 2020
Daughter fertility consists of a number of traits:
• Calving interval days
• Interval first-last insemination days
• Interval calving-first insemination days
• Non-return %
• Conception rate cow %
• Conception rate heifer %
• Age at first insemination
Delta Bonjour has a high daughter fertility index (112)
