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Effect of hypoxia during incubation on the O2 and CO2 chemosensitivity of one day chick

Grant number: 12/11565-6
Support type:Scholarships abroad - Research Internship - Doctorate
Effective date (Start): October 27, 2012
Effective date (End): October 26, 2013
Field of knowledge:Agronomical Sciences - Animal Husbandry
Principal Investigator:Kênia Cardoso Bícego
Grantee:Paula Andrea Toro Velásquez
Supervisor abroad: Jacopo Prospero A. Mortola
Home Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil
Local de pesquisa : McGill University, Montreal, Canada  
Associated to the scholarship:11/07509-0 - Exposure to hypoxia during incubation and its influence on thermal preference and metabolic curve of broiler chicks during the first week post-hatching, BP.DR


We will investigate the influence of hypoxia during incubation on the O2 and CO2 chemosensitivity of one-day Leghorn® chicks. Fertile eggs will be incubated in three different conditions: normoxia (21% O2) during all the incubation; hypoxia (15% O2) during the entire last day of incubation; and hypoxia for 2 hours a day during all the incubation. Pulmonary ventilation, oxygen consumption and CO2 production will be measured in the hatchlings of all treatments submitted to hypoxia (10 and 15% O2 inspired air) or hypercapnia (2 and 4% CO2 inspired air). Results will be analyzed through the analysis of variance (ANOVA) using the post hoc Bonferroni test. Statistical analyses will be conducted using the SAS® software. (AU)