Heat stress can be detrimental to the health of dairy cows and to the cow’s reproduction system. Farmers should use heat stress management in warm weather to ensure cow comfort, health and productivity, according to Bovine Veterinarian.
Economic studies show each additional day a cow is open beyond 90 days post fresh can cost between $1.50 and $3. Cows under heat stress can experience an additional 45 to 60 days open, costing time and money. In addition, heat-stressed dairy cows can suffer a drop in production of 1,000 to 2,000 pounds of milk during the next lactation.
Keep cows cool using these suggestions for a heat abatement program:
Availability of drinking water — Cows will consume more than 30 percent of their daily water intake within 30 minutes of milking. They will drink 25 to 50 percent more water when temperatures are above 80°F.
Sprinkler systems – Keep your cows cool and comfortable with thermostat-regulated water sprinklers in the holding-pen and return-alley.
Adequate air movement — Provide constant air movement by opening sidewalls and ridge vents and flipping on fans if you have them.
Resting areas — Cows need clean, dry bedding, especially in cooler, shaded areas in barns and lots, where cows gather more frequently.