Pregnancy Tab

Use MINDA LIVE to gain insights around your herds In-Calf Rates and Conception Rates.

In Calf Rates for Whole Herd

In Calf Rates For Whole HerdUsing the data

A high 6-week in-calf rate will give you improved herd fertility - deliver more days in milk, more AB replacement calves and reduce empty rates.

Use the graph to see if there is a period of time where things went well or not so well, to help you identify strategies you used that worked well and those that may need tweaking for next mating season.  For example, if your in-calf rate significantly drops off once the bulls go out, have a look at your bull numbers and management to see if improvements could be made.

The graph requires at least 80% of cows eligible for mating to be pregnancy tested. For cows recorded pregnant with a non-aged pregnancy test result, the last recorded mating will be used to determine the conception date.

Eligible cows are those that were present in the herd at the mating start date that also had a calving recorded for the season.

How to read the graph

The dotted blue line is the target in-calf rate based on the industry InCalf program.

The solid blue line is your herds daily cumulative in-calf rate.

The blue diamond is your 6-week in-calf rate (the proportion of cows that got in calf in the first 6 weeks of mating).

Click anywhere on the solid blue line to see the in-calf rate, not-in-calf rate and the number of cows contributing to the calculation at that point in time. 

In the table attached to the graph, you can see up to four years of data.  This allows you to see how your herds 6-week in-calf rates are tracking over time.


In Calf Rates for Whole Herd BreakdownRepro- In Calf Rates for Whole Herd BreakdownUsing the data

This table provides a breakdown of the pregnancy diagnosis results that feed into the In-Calf graphs and not-in-calf rate.  The table helps shed light on what may be causing differences between perceived and actual reproductive performance. Inaccurate, or missing records may contribute to differences in In-Calf and Not-in-Calf rates.

It is not unusual for there to be a difference between the empty rate you have in mind and the not-in-calf rate on MINDA.  This is because the ‘Empty rate’ that most farmers  have in mind is the percentage of the cows tested that are diagnosed as empty on the day of scanning (red box).  However, the not-in-calf rate displayed on all of the in-calf rate graphs are made up of four categories of cows (green boxes):

  •     Cows recorded as Empty
  •     Cows still only recorded as Doubtful
  •     Cows that have been recorded as culled but do not have a pregnancy test result recorded (Removed with no PD)
  •     Cows that are still on the herd’s records (have not been recorded as culled) but do not have a pregnancy result (No removal or PD)

The cows still recorded as Doubtful etc. are included in 'not-in-calf rate' and not 'empty' rate is the reason that there is often differences between empty rate and not-in-calf rate.


In-Calf Rates by Calving Pattern

Repro- In-Calf Rates by Calving PatternUsing the data

This graph is designed to help you understand the impact calving pattern has on subsequent herd reproductive performance. Cows that calve in the first six weeks of the calving period should perform significantly better reproductively than cows that calve in the second six weeks.

Rule of thumb: Medium calvers (calved by week 6 of calving) should have a 6-week in-calf rate within 8% of the 6-week in-calf rate of the Early calvers (calved by week 3 of calving).  If the gap between Early and Medium calvers is greater than this, think about what the differences are between these two groups of cows, and whether these differences are something you can beneficially influence for next mating.

How to read the graph

The circle on the left shows the proportion of cows eligible for mating that calved by weeks 3, 6, 9 and after week 9 (9+) of your calving period.

The graph on the right shows the cumulative in-calf rate for one or more calving patterns compared with your whole herd.

 The grey dotted line is the target in-calf rate based on the industry InCalf program.

The table gives you the proportion of animals in each calving group as well as a breakdown of in-calf rates for each calving pattern through weeks 3, 6, 9 of mating and the not-in-calf rate at the end of mating.

Click colour blocks on the circle (or rows in the table) to add or remove calving patterns to the line graph.


In-Calf Rates by AgeRepro- In Calf Rates by AgeUsing the data

This graph is designed to help you identify how each age group in your herd has performed and their effect on your overall herd performance.

Rule of thumb: Younger cows are expected to perform better than older animals. The older a cow is the worse their reproductive performance is as an age group.  If your first and second calvers (2 and 3 year-olds on the graph) do not have a higher 6-week in-calf rate than your older cows, look into your young stock management.

How to read the graph

The circle on the left shows the proportion of cows eligible for mating grouped by their age, 2 years, 3 years, 4-8 years or 9+ years

The graph on the right shows the cumulative in-calf rate for one or more age groups compared with your whole herd.

The grey dotted line is the target in-calf rate based on the industry InCalf program.

The table gives you the proportion of animals in each age group as well as a breakdown on in-calf rates for each age group through weeks 3,6,9 of mating and the not-in-calf rate at the end of mating.

In-Calf Rates by Body Condition ScoreRepro- In-Calf Rates by Body Condition ScoreUsing the data

This graph is designed to help you understand the impact BCS at calving and/or mating has on subsequent herd reproductive performance. The graph shows the cumulative in-calf rate for one or more BCS groups compared with your whole herd.  At least 70 individual animal’s BCS records (scored within a month either side of calving/mating) are required to produce this graph.

Mature cows should be at BCS 5 at calving. As a group, no more than 15% of them should be below BCS 5 and no more than 15% should be above 5.5. At mating no more than 15% of cows should be below BCS 4.

Two and 3 year old cows should calve at BCS 5.5.  As a group, no more than 15% of them should be below BCS 5.5 and no more than 15% should be above 5.5. At mating no more than 15% of cows should be below BCS 4.5.

How to read the graph

The table gives you a breakdown of BCS distribution and proportion at either Planned Start of Calving or Mating Start Date through weeks 3, 6, 9 of mating and the not-in-calf rate at the end of mating.

Select the BCS number blocks (up to a maximum of four) under the graph to add or remove BCS groups in the line graph.

In-Calf Rates by DiagnosisRepro- In-Calf Rates by DiagnosisUsing the data

This graph is designed to help you understand the impact recorded health events and hormonal intervention had on your herd reproductive performance.

How to read the graph

By selecting one or two of the categories listed you will compare, for example, cows who were diagnosed with mastitis against the cows which were not affected by it (‘Not Affected’).  The health events included in this graph are those that occur between a cow’s calving date and the date that she conceived or the end of the mating date (if she is empty at the end of mating).

If two categories are selected the cows that are compared have not been affected by either of the chosen conditions.

Rule of thumb: If the 6-week in-calf rate of your affected cows is significantly lower than your Not Affected cows, check to see what percentage of the herd was affected.  If it is only a small number, e.g. 2% of the herd, don’t lose any sleep over it.  For mastitis and lameness, the DairyNZ InCalf industry targets are to have no more than 5% of the herd with mastitis, and no more than 5% lame between calving and the end of mating.  If the incidence of mastitis or lameness is higher than 5% in your herd, have a look at ways to improve cow health through this time period.

Conception rate is the percentage of recorded AB inseminations that resulted in a pregnancy (as determined by early aged pregnancy testing).

Inseminations are included if they are recorded as happening on or after the Mating Start Date and are more than 35 days before the last recorded pregnancy diagnosis.

Conception Rates by Season

Repro - Conception Rates by SeasonHow to read the graph

This report helps to assess the efficiency of AB mating in your herd by comparing year on year performance.

The light blue bar represents the number of AB inseminations included, and the dark blue bar shows how many of these inseminations resulted in confirmed pregnancies.  The grey bar represents the target number of pregnancies expected, based on the industry target conception rate of 60%.

The figures used in the conception rate calculation is shown in the table below.

Conception Rates for Whole HerdRepro- Conception Rates for Whole HerdHow to read the graph

This report will help you identify if there are periods where conception rate went better/worse than others within the mating period.  The table shows the conception rate for the first and second 3 weeks of matings and the overall conception rate.

The light blue bar represents the number of AB inseminations included, and the dark blue bar shows how many of these inseminations resulted in confirmed pregnancies.  The grey bar represents the target number of pregnancies expected, based on the industry target conception rate of 60%.

Conception Rates by Calving PatternRepro - Conception Rates by Calving PatternHow to read the graph

This graph enables you to compare the efficiency of AB mating between calving pattern groups and identify the effect late calving cows have on your herd’s conception rate.

The number of Early, Medium, Late and Very late calving cows confirmed pregnant (dark blue bar) is compared against the number of recorded AB inseminations (light blue bar) for each of the calving groups over the AB mating period. The grey bar represents the target number of pregnancies expected, based on the industry target conception rate of 60%.

Conception Rates by AgeRepro- Conception Rates by AgeHow to read the graph

This graph enables you to compare the efficiency of AB mating within age groups and identify if there is a specific age group that is affecting your herd’s conception rate.

The number of cows in each age group confirmed pregnant (dark blue bar) is compared against the number of recorded AB inseminations (light blue bar) for each of the age groups over the AB mating period.  The grey bar represents the target number of pregnancies expected, based on the industry target conception rate of 60%.

Conception Rates by DiagnosisRepro - Conception Rates by DiagnosisHow to read the graph

This graph enables you to compare the efficiency of AB mating between cows which were recorded as being affected by health or intervention events and ‘Not Affected’ animals.

The number of cows in each health event group confirmed pregnant (dark blue bar) is compared against the number of recorded AB inseminations (light blue bar) for each of the health event groups over the AB mating period. The grey bar represents the target number of pregnancies expected, based on the industry target conception rate of 60%.