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With this calculation tool (.xls in Dutch), you can determine the economic impact of mastitis (both clinical and subclinical) for a farm. In the model, you enter various key figures related to the mastitis situation on the farm, such as:

• the number of dairy cows,

• the 305-day milk production,

• the number of clinical cases per year,

• the bulk tank somatic cell count.

Additionally, information must be provided for a few cost items, such as the cost of medications. For all input fields, the calculation model provides a suggested value based on the Dutch average. Information for many input fields can be found in the MPR report.The model calculates the total costs of mastitis, presented as:

• € per year,

• € per clinical case,

• € per cow present.

It also provides an overview of the breakdown of mastitis costs. Before filling in the model, you can estimate the mastitis costs for the farm. The model then compares this estimate with the calculated costs, helping to determine whether the farmer is underestimating or overestimating the costs of mastitis.

 With this calculation tool (.xls in Dutch), you can determine the economic impact of an extended calving interval (CI) for a farm. The costs of an extended CI are mainly caused by lower milk yields and reduced calf revenues.

The model offers both a simple and a detailed version. In the simple version, you enter key figures for the farm, such as the number of dairy cows, the 305-day milk production, and the current CI. In the detailed version, you provide data for each individual cow, including parity, 305-day milk production, CI, and persistence level. In both versions, you also need to estimate a few cost factors, such as drying-off costs. For these cost factors, the model suggests values based on Dutch research. Additionally, both versions allow you to input a desired CI.

As a result, the calculation tool provides the economic impact of an extended CI (in € per year). The model determines this impact by comparing the current CI with a CI of 365 days. Furthermore, it compares the current CI with the desired CI and calculates the potential revenue increase (in € per year) if the CI is reduced to the desired level.

With this calculation tool (.xls in Ducth) you can determine whether investing in a sensor system for heat detection on a dairy farm is profitable.

In the calculation model, you enter information about the sensor (such as purchase cost and performance) and the dairy farm (including the number of dairy cows and 305-day milk production). The tool can be used for different types of sensors, such as pedometers, activity meters, or 3D accelerometers. However, the model is not suitable for systems that measure progesterone levels.

For all settings, the tool provides a suggested value based on an average Dutch dairy farm. You can refine the analysis results for your specific farm situation by adjusting more settings.The tools output includes annual revenue, return on investment, and the payback period for investing in heat detection sensors.

With these calculation tools: JONKOS dairy farm (.xls in Dutch) and JONKOS young stock rearing farms (.xls in Dutch), you can determine the rearing costs of young stock. Additionally, it allows you to assess the economic impact of factors such as a lower calving age for heifers or a lower replacement rate.

In the tool, you enter information about the dairy farm, particularly regarding young stock rearing. On the main page, you provide details on various aspects of young stock rearing, including feed rations and forage. For all input fields, the model suggests values based on the Dutch average. It is also possible to enter more detailed information using additional input sheets. As a result, the calculation tool provides the total rearing costs of young stock (expressed per heifer and per farm). The model also presents a breakdown of these costs, which include all expenses related to young stock rearing, such as labor, contracting, machinery, water, and energy costs.

With this calculation tool (.xls in Dutch), you can get insights in the costs associated with diseases (mastitis, lameness, ketosis and endometritis), and the costs that are associated with implementing management measures. 

In the tool, you enter information about the dairy farm, basic price levels, and information  regarding the 4 diseases. For all input fields, the tool suggests values based on the Dutch average. The tool will be more precise if more exact information is provided. The output includes an overview of costs associated with the disease, and the costs associated with potential management measures.