Seasonal changes in temperature affecting reproduction temperature affect the animal's sexual activity. Excessive temperatures can reduce the reproductive performance of poultry. The high temperature will reduce the quality of the semen in the poultry, reduce the amount of ejaculate, and reduce the proportion of live spermatozoa to the total number of spermatozoa. The hypothermia prolongs the time when the rooster sperm is generated. Excessively high temperatures and low temperatures also affect the fertilization rate and hatchability of the eggs.
Temperature-dependent growth, fattening, and high or low egg production temperatures are detrimental to poultry growth, egg production, and feed utilization. The optimal temperature for chick growth decreased with age, from 1 day to 7 days at 32°C; at 8 days to 14 days at 29°C; at 15 days to 21 days at 26 to 28°C; at 22 days~ 28 days old 24 °C ~ 21 °C. Excessive temperature resulted in slow growth and increased mortality. Low temperature resulted in decreased feed utilization. Broilers had the highest production performance at 21°C. The optimum growth temperature for turkeys was 15.6°C~21.1°C. Commercial egg hens in the temperature of 10 °C ~ 36 °C environment, egg production than the average 23 °C higher than the average temperature, the suitable temperature for poultry egg production is 13 °C ~ 23 °C, some people claim that the appropriate temperature for poultry egg production From 25°C to 30°C, the effect of low temperature on egg production is inconsistent, and it is generally believed that continuing below 7°C will have an adverse effect on egg production and feed utilization. It is generally believed that temperature changes can maintain high egg production at 15°C to 30°C.
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