User Guide – Abortion Indicators Monitor
Module
Reports > Abortions > Indicators Monitor
This dashboard allows analyzing critical reproductive events: abortions, births, birth rate, and calf survival.
Correct interpretation of these indicators helps detect problems early and improve the reproductive
and productive efficiency of the farm.
1. Births in the Current Period
| Definition |
Total number of births that occurred within the selected date range. |
| Target |
Depends on herd size and reproductive scheduling. |
| Usefulness |
Measures current reproductive activity, providing context for the other indicators. |
| Example |
If 12 births occurred in September, this is the basis for calculating birth rate and projections. |
2. Abortion Rate (%)
| Definition |
Proportion of abortions relative to the total recorded pregnancies. |
| Formula |
Abortion Rate (%) = (Number of abortions ÷ Total number of pregnancies) × 100
|
| Target |
- < 3% = acceptable
- 3–5% = warning
- > 5% = critical
|
| Usefulness |
Helps detect reproductive, nutritional, or management issues. |
| Example |
If 1 abortion occurs out of 65 pregnancies → (1 ÷ 65) × 100 = 1.54%. |
3. Average Age at First Calving (years)
| Definition |
Average time it takes a heifer from birth to her first calving. |
| Formula |
Average Age = (Σ age at first calving) ÷ (number of heifers)
|
| Target |
22–24 months. Values above 30 months indicate low efficiency. |
| Usefulness |
Measures reproductive precocity and directly affects profitability
(the earlier lactation starts, the sooner milk production begins).
|
4. Types of Births (Pie Chart)
| Definition |
Classification of births by condition: eutocic (normal), dystocic (difficult), cesarean, assisted or unassisted abortions. |
| Target |
- 90% should be eutocic.
- Dystocias > 5% = alert for genetics or management.
|
| Usefulness |
Detects obstetric management or genetic selection problems. |
5. Births per Month (Line Chart)
| Definition |
Number of births occurring each month of the period. |
| Target |
Depends on reproductive planning (e.g., distributed vs. seasonal births). |
| Usefulness |
Identifies peaks or gaps in birth production, impacting the milk production curve. |
6. Neonatal Mortality Rate (%)
| Definition |
Proportion of calves that die from birth until weaning. |
| Formula |
Neonatal Mortality Rate (%) = (Number of calves dead before weaning ÷ Total live births) × 100
|
| Target |
- < 5% = excellent
- 5–10% = warning
- > 10% = critical
|
| Usefulness |
Evaluates management quality in early rearing (colostrum, facilities, health). |
7. Birth Rate (%)
| Definition |
Percentage of reproductive-age cows that gave birth during the period. |
| Formula |
Birth Rate (%) = (Number of births ÷ Total reproductive-age cows) × 100
|
| Target |
85–90% annually. |
| Usefulness |
This is the overall reproductive efficiency indicator. |
| Example |
20 births ÷ 100 reproductive cows = 20% birth rate (low). |
8. Births by Gender
| Definition |
Distribution of live births between females and males. |
| Target |
Expected ratio ≈ 50/50. |
| Usefulness |
Helps plan retention of replacements (females) and sale of males. |
9. Reproductive Projection
| Definition |
Future estimation of births, drying-off, milkings, and milk production. |
| Calculation |
Based on service records, confirmed pregnancies, and scheduled drying-off. |
| Usefulness |
Allows anticipating herd load, milk production, and feeding planning. |
10. Calving Interval (days)
| Definition |
Average time between two consecutive calvings of a cow. |
| Formula |
Calving Interval = (Σ days between calvings of each cow ÷ total cows)
|
| Target |
380–400 days. |
| Usefulness |
Evaluates reproductive efficiency: long intervals reduce the number of lactations per cow's lifetime. |
| Example |
694 days → indicates fertility or management issues. |
11. Weaning Survival (Females / Males)
| Definition |
Percentage of live-born calves that survive until weaning. |
| Formula |
Survival (%) = (Calves weaned alive ÷ Live-born calves) × 100
|
| Target |
> 95%. |
| Usefulness |
Reflects the effectiveness of neonatal management and feeding. |
12. Abortion Rate Trend (Time Chart)
| Definition |
Behavior of the abortion rate over the months. |
| Usefulness |
Helps detect seasonal patterns or those associated with management factors (feed changes, climate, diseases). |
📘 Quick Glossary
- Abortion: loss of pregnancy before normal calving.
- Dystocia: difficult birth requiring assistance.
- Eutocic: normal birth without complications.
- Birth rate: proportion of cows that calve out of total reproductive-age cows.
- Neonatal mortality: deaths between birth and weaning.
- Calving interval: days between two consecutive calvings.
- Weaning survival: % of calves surviving until weaning.
🚀 How to Use This Dashboard in Practice
- Monitor abortions and neonatal mortality as alert indicators.
- Measure birth rate and calving intervals to evaluate reproductive efficiency.
- Analyze birth types and calf survival to detect management or genetic issues.
- Review projections to plan feeding, milkings, and future production.
- Track abortion rates monthly to identify patterns and take preventive actions.