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

Abstract

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)