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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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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Selection Indices for Milk Traits in Holstein–Friesian Cows: A Comparison of Relative Economic Value Methods2025
  2. 2Are there too many traits in our selection indices?2025
  3. 3Latent phenotype potential: Modelling response to selection for dairy cattle productivity traits considering genetic correlations2025
  4. 4The relationship of economically useful features of Holstein cows with different combinations of selection2025
  5. 5Genetic Parameters of Milk Fat, Protein and Solid-Not-Fat Percentage Using Univariate Animal Model2025