Optimizing lifetime productivity in high-producing dairy cows: challenges in the management of age at first calving, double ovulation, and postpartum uterine health
Hiromi KUSAKA · 2026
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Description
Kusaka reviews how to protect life-long output in high-yielding dairy cows. Their fertility and how long they live have slipped, even as milk output per cow climbed nearly five-fold since 1950. Three care fronts frame the evidence. They are age at first calving, double ovulation, and uterine health after calving in modern herds.
Calving first before 22.5 months of age raised lifetime daily milk yield. It did no harm through the third lactation, if heifers reached at least 600 kilograms before calving for the first time. Double ovulation, which leads to twins, showed up more in cows that had calved before. It tracked with negative energy balance, a state milk lactose levels may help flag. For spotting uterine infection, pairing discharge scoring with ultrasound sharply improved forecasts of breeding results over either method alone in the studies covered. That backs combined checks.
Catalog record
| CREATOR | Hiromi KUSAKA |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 37 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |