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Effects of incubation temperature on hatching and carcass performance of broilers

Published online by Cambridge University Press:  18 March 2010

S. YALÇIN ,
E. BABACANOĞLU ,
H.C. GÜLER  and
M. AKŞIT
S. YALÇIN*
Affiliation:
Faculty of Agriculture, Department of Animal Science
E. BABACANOĞLU
Affiliation:
Faculty of Agriculture, Department of Animal Science
H.C. GÜLER
Affiliation:
Faculty of Agriculture, Department of Animal Science
M. AKŞIT
Affiliation:
Ege University, İzmir, Turkey
*
Corresponding author: [email protected]
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Abstract

In the past 20 years, broiler production has increased in hot climate countries, due to a greater potential for further growth. Thus, there is a necessity to improve thermotolerance of broilers produced in hot climates. Incubation period will become increasingly important in enhancing thermotolerance, because higher temperatures during incubation may lead to an elevation of the thermoregulatory set-point after hatch. Two recent experiments, conducted to determine the effect of high incubation temperature (INCHIGH) from d 10 to 18 on hatching performance and carcass characteristics of broilers, have been compared with broilers from incubated at control temperatures (INCCONT). INCHIGH resulted in a delay in external pipping and hatching times compared with INCCONT. There was no incubation temperature effect on the weights of bursa of fabricius, spleen and lungs, and moisture content of chicks but lowered heart and liver weights. When broilers exposed to daily cyclic high temperature from 21 to 42 d, slaughter weight of broilers from INCCONT reduced while heavier body weight and breast yield were obtained in broilers from INCHIGH. It was concluded that higher incubation temperature from d 10 to 18 for 6 h/d had no effect on chick weights and minimized the negative effect of heat stress on slaughter weight and breast meat yield.

Keywords

broilersincubation temperaturehatching performancecarcass performance
Type
Review Article
Information
World's Poultry Science Journal , Volume 66 , Issue 1 , March 2010 , pp. 87 - 94
Copyright
World's Poultry Science Association 2010

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