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December 8, 2025Canadian Journal of Animal Science

Genetic evaluation of profitability measures in Holstein dairy cows

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Authors

DRDavoud RostamiAPAbbas PakdelEGEbrahim Ghasemi

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Overview

Analysis shows profitability and heritability correlations in dairy cows, suggesting breeding improvements for economic efficiency.

Key Points

  • Profitability shows a moderate heritability of 0.25, indicating potential for genetic improvement.
  • Income over feed cost per 100 kg of milk has a high genetic correlation (0.97) with profit, making it a robust selection index.
  • Assessment of over 4 million test-day records reveals the negative impact of exclusively focusing on milk yield on economic efficiency.
  • Breeding programs should prioritize indices like income over feed cost to enhance sustainability and profitability in dairy farming.

Cite This Study

Rostami et al. (2025) studied this question.

synapsesocial.com/papers/69362f4b4fa91c937236d7dahttps://doi.org/10.1139/cjas-2025-0043
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