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Effect of Weather on Meat Chicken Growth Rate — What to Consider?

April 5, 2026

Quick Answer

Weather conditions significantly affect meat chicken growth rate, with temperature fluctuations and humidity levels impacting feed efficiency, weight gain, and overall health. Extreme weather conditions can lead to stress, reduced feed intake, and decreased growth rates. Chickens require optimal living conditions to achieve maximum growth potential.

Understanding Temperature Requirements

Meat chickens grow best in temperatures between 60°F to 80°F (15°C to 27°C), with an optimal range of 70°F to 75°F (21°C to 24°C). Temperatures above 90°F (32°C) or below 40°F (4°C) can reduce growth rates and increase mortality. Provide shade and ventilation to maintain a comfortable temperature range, especially during hot summer months.

Managing Humidity Levels

Relative humidity (RH) levels above 60% can lead to respiratory issues and reduced feed efficiency. Maintain a RH level between 40% to 60% by ensuring adequate ventilation and using misting systems. Monitor temperature and RH levels closely to adjust your management strategies accordingly. For example, you can use evaporative cooling systems to lower temperatures and maintain a comfortable RH level.

Providing Adequate Shelter and Nutrition

Provide meat chickens with access to shelter and protection from wind, rain, and extreme temperatures. Ensure they have access to clean water and a balanced diet that meets their nutritional requirements. Consider using online calculators or consulting with a poultry expert to determine the ideal feed formulation for your flock based on their age, weight, and breed.

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