Abstract
NUMEROUS workers have made studies on the effects of both brooding and grow-out temperatures on broiler production. Barott and Pringle (1947, 1949, 1950) made studies that led to brooding temperature recommendations for many years. More recent studies reported by Huston (1965) and Winn and Godfrey (1967) indicate that brooding temperatures for present day broiler chicks can be lower than those recommended by Barott and Pringle. Prince et al. (1961) subjected chicks to 7.1°, 12.8°, 18.3° and 23.8°C. from 4 to 8 weeks of age and found the birds grown in the cooler environments ate more feed but grew slower than those in the warmer environments. Also, the chicks at the higher temperatures had a better feed conversion than those at the lower temperatures.The higher winter-time condemnation rates indicated temperature might be a factor affecting condemnation in broilers. The normal yearly condemnation curve shows that the rate of condemnation goes…
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