Document Detail


Comparison of three lines of broilers differing in ascites susceptibility or growth rate. 2. Egg weight loss, gas pressures, embryonic heat production, and physiological hormone levels.
MedLine Citation:
PMID:  16206567     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Ascites is a metabolic disorder that accounts for over 25% of overall mortality in the broiler industry. This disorder is manifested between wk 5 and 6 posthatch, but there are previous indications that predisposition may be identified during embryonic development. In this current study, we determined embryonic physiological and metabolic parameters that may be associated with ascites predisposition. For this purpose, we used broiler eggs from 3 lines that differed in ascites sensitivity. These included an ascites-sensitive dam line (DAS), an ascites-resistant dam line (DAR), and an ascites-sensitive sire line (SASL). Eggs were incubated for 21 d under standard conditions. The following parameters were measured during incubation: egg weights at setting, egg weight losses at 18 d, embryo body weights and embryo heart weights throughout development, air cell partial gas pressures (pCO2 and pO2) levels at d 18 and at internal pipping (IP); plasma triiodothyronine, thyroxine, and corticosterone levels at d 18, IP, and hatch; heat production from d 17 until hatch, hematocrit values at hatch, and posthatch growth rate to 7 d along with hematocrit values. The data obtained revealed that selection for ascites sensitivity or rapid growth rate had no consistent influence on some of these parameters such that they could be wholly associated with ascites sensitivity for predictive purposes. Whereas differences in embryonic developmental patterns were apparent throughout embryonic development, these differences in physiological and metabolic parameters may be due partly to genetic differences unrelated to ascites sensitivity.
Authors:
L De Smit; K Tona; V Bruggeman; O Onagbesan; M Hassanzadeh; L Arckens; E Decuypere
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Poultry science     Volume:  84     ISSN:  0032-5791     ISO Abbreviation:  Poult. Sci.     Publication Date:  2005 Sep 
Date Detail:
Created Date:  2005-10-06     Completed Date:  2005-10-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0401150     Medline TA:  Poult Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1446-52     Citation Subset:  IM    
Affiliation:
Laboratory of Physiology and Immunology of Domestic Animals, Kasteelpark Arenberg 30, B-3001 Heverlee, Belgium.
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MeSH Terms
Descriptor/Qualifier:
Animals
Ascites / genetics,  veterinary*
Carbon Dioxide / analysis
Chick Embryo / anatomy & histology,  growth & development,  physiology*
Corticosterone / analysis
Genetic Predisposition to Disease*
Heart / embryology
Hematocrit
Hormones / analysis*
Organ Size
Oxygen / analysis
Partial Pressure
Poultry Diseases / genetics*
Species Specificity
Thermogenesis
Thyroxine / analysis
Time Factors
Triiodothyronine / analysis
Chemical
Reg. No./Substance:
0/Hormones; 124-38-9/Carbon Dioxide; 50-22-6/Corticosterone; 6893-02-3/Triiodothyronine; 7488-70-2/Thyroxine; 7782-44-7/Oxygen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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