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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
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
Poultry Science, Volume 84, No. 9, Year 2005
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Description
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. ©2005 Poultry Science Association, Inc.
Authors & Co-Authors
de Smit, Lieve
Belgium, Heverlee
Laboratory of Physiology and Immunology of Domestic Animals
Tona, Kokou
Belgium, Heverlee
Laboratory of Physiology and Immunology of Domestic Animals
Bruggeman, Veerle
Belgium, Heverlee
Laboratory of Physiology and Immunology of Domestic Animals
Onagbesan, Okanlawon Mohammed
Belgium, Heverlee
Laboratory of Physiology and Immunology of Domestic Animals
Arckens, Lutgarde H.
Unknown Affiliation
Decuypere, Eddy M.P.
Belgium, Heverlee
Laboratory of Physiology and Immunology of Domestic Animals
Statistics
Citations: 37
Authors: 6
Affiliations: 2
Identifiers
Doi:
10.1093/ps/84.9.1446
ISSN:
00325791
Research Areas
Environmental
Genetics And Genomics
Noncommunicable Diseases