Abstract
Effect of Incubation Duration on Broiler Breeder Eggs Hatchability and Post-Hatch Performance
Highlights
Poultry is the 2nd largest industry of Pakistan, whose play a key role in GDP of country (Hussain, et al 2015)
For group A hatch pulling was performed through conventional method of hatch pulling in Pakistan
In Pakistan, one hatch pulling after 494 h is a common practice that followed by a shifting of unhatched eggs to same hatchers for 12 h for second hatch pull
Summary
Poultry is the 2nd largest industry of Pakistan, whose play a key role in GDP of country (Hussain, et al 2015). The studies have declared that hatching egg quality and incubation conditions significantly influence the post-hatch performance of broilers (Almeida et al, 2006; Jabbar and Yousaf, 2017; Yousaf et al, 2017). (Tong et al, 2013; Van de Ven et al, 2011b) This time interval between first and last chick hatch is called “Hatch Window” (Molenaar et al, 2011). In Pakistan, traditional method of twice hatch pulling (first at 494 h and second at 506 h) is been used in hatcheries. For group A hatch pulling was performed through conventional method of hatch pulling in Pakistan. For second hatch pull the remaining chicks and unhatched eggs were again shifted to hatcher for 12 h. Group B was pulled out only one time after 506 h (456 h in setters and 50 h in hatchers). Hatch pull out was performed through shell separator (KUHL, USA)
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