Cattle

Shielding cattle from heat: Critical steps to avoid health risks

As intense heatwaves push temperatures into the triple digits, cattle producers face urgent challenges: heat stress harms weight gain, increases illness, and can even lead to death. Effective mitigation strategies are essential to maintain herd health and profitability.

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In recent days, record-breaking heat across the Plains and beyond has crossed the 100-110°F (38-43°C) heat index threshold. These conditions are more than uncomfortable-they actively impair cattle health. Producers should be ready with proactive strategies to safeguard their herds.

Careful timing and environmental modifications are key:

Shift feeding and handling schedules to early morning or evening to reduce stress.

Provide ample shade-ideally 20ft² (1.9m²) per animal-and ensure proper ventilation.

Use sprinklers or water sprays in the cooler hours, avoiding midday application to prevent added humidity.

Ensure fresh, plentiful water, especially as consumption doubles when temperatures rise from 70 to 90°F (21 to 32°C) .

Modify feed delivery, reducing feed during peak heat and adjusting ration composition.

Handle cattle slowly, especially heavier animals, to prevent fatigued cattle syndrome, and situate them close to loading areas.

Cattle producers can determine how to handle the risk of heat stress by referring to the Beef Cattle Temperature Humidity Chart. (Chart courtesy of Rob Eirich, UNL Extension)

Monitor herd behavior and environmental conditions using tools like the Temperature-Humidity Index (THI), local forecasts, and animal comfort indices to trigger timely interventions. DTN survey data shows that 75% of producers, veterinarians, and nutritionists employ such strategies, especially adjusting work schedules and feeding practices.

Failing to act can reduce weight gain, suppress immune function, and cause reproductive issues-and in extreme cases lead to death, particularly among heavier cattle with darker coats sciencedirect.com+6dtnpf.com+6dtnpf.com+6. Investing in heat resilience-shade structures, water systems, and adaptive management-reduces losses and upholds animal welfare. 

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