Document Detail

Interaction between ascites susceptibility and CO during the second half of incubation of two broiler lines. Effect on embryonic development and hatching process.
MedLine Citation:
PMID:  20680868     Owner:  NLM     Status:  MEDLINE    
1. Because CO(2) during the second half of incubation is known to influence air cell and blood gases, and embryo development, it is postulated that post-hatch development and ascites sensitivity could also be influenced. 2. An ascites susceptible (A) and an ascites resistant (E) broiler line were incubated under standard incubation or high CO(2) conditions (up to 4%) from embryonic day (ED) 10 onwards. The embryonic development and the hatching process of these two lines were compared when incubated under standard or high CO(2) conditions from over the second half of incubation. 3. The A line, selected for high post-hatch growth rate, exhibited a higher relative embryo weight from ED10 until ED16, which was supported by a higher air cell pCO(2), lower air cell pO(2), higher corticosterone and thyroid hormones and earlier hatching time. 4. Incubation under high CO(2) increased air cell pCO(2), retarded yolk consumption, and decreased glycogen concentration in the liver at hatch. Hatchability decreased in both lines when incubated under high CO(2), due to an increased late mortality of embryos that died before IP. 5. These results suggest that the development and metabolism of CO(2)-incubated embryos differ from control incubated embryos.
N Everaert; M Debonne; H Willemsen; A Witters; B Kamers; J De Baerdemaeker; E Decuypere; V Bruggeman
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  British poultry science     Volume:  51     ISSN:  1466-1799     ISO Abbreviation:  Br. Poult. Sci.     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-08-03     Completed Date:  2010-12-03     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  15740290R     Medline TA:  Br Poult Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  335-43     Citation Subset:  IM    
Department of Biosystems, K. U. Leuven, Belgium.
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MeSH Terms
Ascites / genetics,  veterinary*
Carbon Dioxide / pharmacology*
Chick Embryo / drug effects*
Chickens / genetics,  growth & development*
Corticosterone / blood
Embryonic Development / drug effects*
Glycogen / metabolism
Liver / metabolism
Thyroxine / blood
Time Factors
Triiodothyronine / blood
Reg. No./Substance:
124-38-9/Carbon Dioxide; 50-22-6/Corticosterone; 6893-02-3/Triiodothyronine; 7488-70-2/Thyroxine; 9005-79-2/Glycogen

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