Article (Scientific journals)
Regulatory capacities of a broiler and layer strain exposed to high CO2 levels during the second half of incubation.
Everaert, Nadia; Willemsen, Hilke; Kamers, Bram et al.
2011In Comparative Biochemistry and Physiology. Part A, Molecular and Integrative Physiology, 158 (2), p. 215-20
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Keywords :
Acid-Base Equilibrium; Animals; Bicarbonates/blood; Calcium/blood; Carbon Dioxide/blood/pharmacology; Carbonic Anhydrases/biosynthesis/blood; Chick Embryo/embryology/metabolism; Chlorides/blood; Hydrogen-Ion Concentration; Hypercapnia/blood; Potassium/blood; Poultry Diseases/blood/embryology
Abstract :
[en] It has been shown that during embryonic chicken (Gallus gallus) development, the metabolism of broiler embryos differs from that of layers in terms of embryonic growth, pCO2/pO2 blood levels, heat production, and heart rate. Therefore, these strains might adapt differently on extreme environmental factors such as exposure to high CO2. The aim of this study was to compare broiler and layer embryos in their adaptation to 4% CO2 from embryonic days (ED) 12 to 18. Due to hypercapnia, blood pCO2 increased in both strains. Blood bicarbonate concentration was ~10 mmol/L higher in embryos exposed to high CO2 of both strains, while the bicarbonates of broilers had ~5 mmol/L higher values than layer embryos. In addition, the pH increased when embryos of both strains were exposed to CO2. Moreover, under CO2 conditions, the blood potassium concentration increased in both strains significantly, reaching a plateau at ED14. At ED12, the layer strain had a higher increase in CAII protein in red blood cells due to incubation under high CO2 compared to the broiler strain, whereas at ED14, the broiler strain had the highest increase. In conclusion, the most striking observation was the similar mechanism of broiler and layer embryos to cope with high CO2 levels.
Disciplines :
Animal production & animal husbandry
Author, co-author :
Everaert, Nadia ;  KU Leuven > Department of Biosystems > Division Livestock-Nutrition-Quality
Willemsen, Hilke
Kamers, Bram
Decuypere, Eddy
Bruggeman, Veerle
Language :
English
Title :
Regulatory capacities of a broiler and layer strain exposed to high CO2 levels during the second half of incubation.
Publication date :
2011
Journal title :
Comparative Biochemistry and Physiology. Part A, Molecular and Integrative Physiology
ISSN :
1095-6433
eISSN :
1531-4332
Publisher :
Elsevier, Netherlands
Volume :
158
Issue :
2
Pages :
215-20
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
Copyright A(c) 2010 Elsevier Inc. All rights reserved.
Available on ORBi :
since 13 December 2013

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