Health · 6 min read
Research note · 2 March 2025 · revised 11 August 2025
Heat Stress and Indigenous Breeds
Darvi Genetics Research Desk · Darvi Genetics field desk
Abstract
Why tropical adaptation is a production trait — and how Gir cattle change the infrastructure equation.
Heat stress is an economic trait. When ambient temperature and humidity rise, feed intake falls, fertility dips, and milk curves collapse — especially in animals bred for temperate climates.
§01Zebu advantages
“Gir cattle possess morphological and physiological traits that improve heat dissipation and maintain function under thermal load.”
Gir cattle possess morphological and physiological traits that improve heat dissipation and maintain function under thermal load.
§03Systems design
Choosing adapted genetics reduces dependence on extreme cooling infrastructure, though shade, water, and thoughtful housing remain essential.
§04Balanced goals
Heat tolerance does not excuse neglecting milk solids, udder health, or fertility. Multi-trait selection remains the standard.