Summer Heat Stress Management in Dairy Livestock: Practical Farm Tips
Prevent steep declines in milk yield during hot summer months using smart shed ventilation, foggers, cold water, and dietary adjustments.
The Impact of Heat Stress on Milk Yield
When the Temperature Humidity Index (THI) crosses 72, dairy cows and crossbred cattle suffer from acute heat stress. Feed intake drops by 15-30%, leading to an immediate drop in milk production and lower conception rates.
Effective Heat Stress Mitigation Steps
- Shed Roofing & Insulation: Paint asbestos or tin roofs with white reflective lime/paint or cover them with dry thatch/straw (6 inches thick) to cut radiant heat.
- Misting and Ceiling Fans: Install high-speed exhaust fans paired with low-pressure foggers. Run them during peak afternoon hours (11:00 AM to 4:00 PM).
- Cool Drinking Water: Supply cool, shaded drinking water round the clock. Adding a pinch of mineral electrolytes prevents dehydration.
- Night Feeding: Shift 60% to 70% of the total ration to cooler hours of the night and early morning when animals eat with higher relish.
- Add Sodium Bicarbonate (मीठा सोडा): Add 30-50 grams of baking soda per cow daily to stabilize rumen pH and reduce metabolic heat.
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