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The Dairy Edge ·Oct 5, 2026 ·33 min

September Evaluation Update & the COW Index with Margaret Kelleher, ICBF

Evaluation and Summary

5.7/10

The Dairy Edge episode features Dr. Margaret Kelleher, Genetics Operation Manager at ICBF (Irish Cattle Breeding Federation), discussing two main topics: the September 2026 evaluation update and the COW (Cow's Own Worth) Index. Kelleher explains that September evaluations were relatively stable, which is typical for this time of year in Ireland's seasonal dairy system. She describes ICBF's ongoing data management process, which involves continuously receiving and integrating milk records, calving records, factory data, mart data, and genotypes into their database—a process that takes approximately two months per evaluation cycle, after which the next update begins almost immediately. The episode's core focus is the COW Index, a herd-specific tool designed to help farmers make culling decisions. Kelleher outlines how the index ranks cows by combining current performance, predicted future performance, and replacement cost. The tool is intended to identify the bottom 10–15% of a herd as candidates for culling, helping farmers cut through complexity when making these decisions. A key distinction is made between two ICBF tools: EBI (Economic Breeding Index) for identifying the most profitable cows to breed from, and COW for culling decisions. Kelleher emphasizes that the COW Index's effectiveness depends heavily on accurate data entry. Milk recording, fertility data, and scanning information have major impacts on the index's accuracy. Additional data on mastitis, lameness, and temperament would further improve its usefulness for individual farmers. The episode is positioned as practical guidance for Irish dairy farmers navigating herd management decisions in a seasonal production system. The conversation appears to be relatively straightforward and technical, aimed at farmers already familiar with ICBF tools and dairy industry terminology.

Verdict: A solid, practical episode for its target audience of Irish dairy farmers, with clear explanation of a useful tool, but limited depth on the September update and no external validation or alternative perspectives.

Government rubric

  • Accuracy and sourcing 3/5 20%

    Information comes from an ICBF official explaining her organization's tools and processes, but no external sources, studies, or comparative data are cited to verify claims.

  • Balance and context 3/5 20%

    Presents ICBF's perspective on evaluation updates and the COW Index without discussing alternative culling methods, competing tools, or farmer critiques of the system.

  • Clarity on what it means 4/5 15%

    Clearly explains what the COW Index does and how farmers should use it (identify bottom 10–15% for culling), with practical guidance on data requirements.

  • Substance 3/5 15%

    Covers the promised topics with useful detail on the COW Index and data processes, but the September update appears to be a brief framing device rather than substantive content.

  • Delivers on its title 4/5 15%

    Title promises both the September update and COW Index; both are covered, though the update is described as 'relatively stable' with limited detail.

  • Value for time 3/5 15%

    33 minutes for a focused technical discussion is reasonable, though the September update portion appears thin and the COW Index explanation could be dense for newcomers.

How we score Government

Worth it if you're an Irish dairy farmer using ICBF tools and want to understand how the COW Index works for culling decisions.

Based on the episode description. AI-generated; it can be wrong.

Show notes

Dr. Margaret Kelleher, Genetics Operation Manager at ICBF, joins Stuart Childs to discuss the most recent update in September and to learn more about the COW index that farmers should be using more in their herd to identify the cows that require career changes! Margaret explains that September evaluations were relatively stable, as they tend to be at this time of year in the seasonal system that we have here in Ireland, but ICBF continues to receive and update large volumes of data, including milk records, calving records, factory data, mart data and genotypes on a daily basis that they then gather together and add to the existing information to update the details of the animals on the database. This is a job that takes about 2 months to do and as soon as an update is published, ICBF start on the process for the next update almost immediately.   We then moved to the main core of today’s conversation, the COW (Cow’s Own Worth) Index which Margaret outlined as a live herd-specific tool that ranks cows using current performance, predicted future performance and replacement cost. Where good data is entered, this index can be used by farmers to identify the bottom 10–15%  to be considered for culling. It has the advantage of pulling milk performance, calving date and future potential together to help cut through the noise when trying to make culling decisions.   For the tool to be most effective, accurate recording of information is essential. Milk recording, fertility and scanning data have a major impact, while recording mastitis, lameness and temperament would make the Cow Index more accurate and useful for the individual farmer. EBI is the tool to use to identify the most profitable cows to breed from, COW is for culling decisions. For more episodes from the Dairy Edge podcast go to the show page at: https://www.teagasc.ie/animals/dairy/the-dairy-edge-podcast/   The Dairy Edge is a co-production with LastCastMedia.com

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