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Key questions about heat stress: Growth and meat quality

How does heat stress affect animal growth and meat quality?

21 August 2025
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  • How does heat stress affect feed consumption?
  • What about growth?
  • Does it affect lipolysis?
  • What about muscle proteolysis?
  • Do you know how it affects the number of muscle fibers?

Find the answer to these and other questions in the following slides. Just click on the screen to go to the next one.

333 Staff

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FAQs

How does stress affect pig growth?

  • Heat induces hormonal and metabolic changes that redirect nutrients to fat storage, limiting lean growth.
  • It alters conversion efficiency.
  • It reduces levels of the thyroid hormones T3 and T4.
  • It increases insulin secretion, which inhibits fat mobilization (lipolysis) and promotes its storage.
  • It reduces the number of muscle fibers in the fetus, limiting the capacity for postnatal hypertrophy.
  • It prioritizes the use of amino acids as energy over lipids (muscle proteolysis).

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