Title: Effect of four percent carbon dioxide during the second half of incubation on embryonic development, hatching parameters, and posthatch growth
Authors: Everaert, Nadia ×
Kamers, B
Witters, Anouck
De Smit, Lieve
Debonne, Marian
Decuypere, Eddy
Bruggeman, Veerle #
Issue Date: Jul-2007
Publisher: Poultry science assoc inc
Series Title: Poultry science vol:86 issue:7 pages:1372-1379
Abstract: In this study, broiler embryos were exposed during the second half of incubation [embryonic day (ED) 10 until ED18] to 4% CO2. The CO2 was set to reach 2% on ED11 and 4% from ED12 onward. Two experiments were conducted with the same setup. Embryo weight was measured and partial pressure Of CO2 and O-2 in the air cell was analyzed at several embryonic ages. Times of internal pipping, external pipping, and hatching were recorded. Chicks were raised until d 7 posthatch. Plasma corticosterone, triiodothyronine, and thyroxine concentrations were determined. Embryonic growth was not retarded and hatchability did not decrease in the CO2-incubated group, demonstrating that chicken embryos can tolerate high (4%) concentrations of CO2 between ED10 and ED18. In the first experiment, partial pressure Of CO2 in the air cell was significantly higher in the CO2 group on ED11, ED12, ED13, and ED14, but disappeared thereafter. This difference was not observed in the second experiment. A change in the hatching process of the CO,, group was seen. Relative growths of newly hatched chicks until d 7 posthatch were equal in the CO2 group and the control group. However, corticosterone and thyroxine concentrations were significantly higher in the CO2-incubated chicks on d 7 posthatch.
ISSN: 0032-5791
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Division of Livestock-Nutrition-Quality (-)
Division of Mechatronics, Biostatistics and Sensors (MeBioS)
Biosystems - miscellaneous
× corresponding author
# (joint) last author

Files in This Item:

There are no files associated with this item.

Request a copy


All items in Lirias are protected by copyright, with all rights reserved.

© Web of science