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International Journal of Poultry Science

.: Home > International Journal of Poultry Science > 2008 > Volume 7 Number 8 > H.A. Olanrewaju1, W.A. Dozier1 III, J.L. Purswell1, S.L. Branton1, D.M. Miles2, B.D. Lott3, A.J. Pescatore4 and J.P. Thaxton3

Growth Performance and Physiological Variables for Broiler Chickens Subjected to Short-Term Elevated Carbon Dioxide Concentrations

H.A. Olanrewaju1, W.A. Dozier1 III, J.L. Purswell1, S.L. Branton1, D.M. Miles2, B.D. Lott3, A.J. Pescatore4 and J.P. Thaxton3
*1USDA, Agriculture Research Service, Poultry Research Unit, P.O. Box 5367, Mississippi State, MS 39762-5367, USA 2USDA-ARS, Forage and Waste Management Unit, Mississippi State, MS, USA 3Department of Poultry Science, Mississippi State University, Mississippi, MS 39762, USA 4Department of Animal Sciences, University of Kentucky, Lexington, KY, USA
Abstract :

Four trials were conducted to evaluate growth responses, blood chemistry and heart characteristics of broiler chicks subjected to progressive concentrations (0, 3,000, 6,000, 9,000 ppm) of carbon dioxide (CO ) gas from 1-14 days of age, which were then discontinued throughout the remainder 2 of the trial (42 days of age). On days 14 and 42 of each trial, 20 birds per chamber were randomly selected for immediate analysis of blood partial pressure of CO (pCO ), blood partial pressure of O (pO ), blood pH, 2 2 2 2 hematocrit (Hct), hemoglobin (Hb), blood electrolytes (Na+, K+, Ca2+ and Cl-) and determination of heart
characteristics. Body and feed weights were recorded at 0, 14, 28 and 42 days of age for growth performances. Final body weight (BW) gain and feed conversion were similar among the treatments, but
cumulative mortality significantly increased as CO increased (P < 0.05) from 3,000-9,000 ppm. Treatments 2 did not alter blood pCO and pO concentrations at age 14 and 42 days of age. Increasing CO up to 9,000 2 2 2 ppm failed to reveal differences for heart weight characteristics at 14 days of age, but total heart and left ventricle weights were increased at 42 days of age. These results indicate that subjecting chicks to
progressive concentrations of CO from 1-14 days of age does not adversely alter blood chemistry or 2
cumulative growth performance, but increased the incidence of late-mortality.

Keywords :
Carbon dioxide, growth performance, blood chemistry, broiler, well-being

Date Deposited : 12 Jul 2011 13:48

Last Modified : 12 Jul 2011 13:51

Official URL:

Volume 7, Number 8, - 2008 , ISSN 1682-8356

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