Dietary energy source and density modulate the expression of immunologic stress in chicks

Benson, Barbara N., Calvert, C.C., Roura, E. and Klasing, K.C. (1993) Dietary energy source and density modulate the expression of immunologic stress in chicks. Journal of Nutrition, 123 10: 1714-1723.

Author Benson, Barbara N.
Calvert, C.C.
Roura, E.
Klasing, K.C.
Title Dietary energy source and density modulate the expression of immunologic stress in chicks
Journal name Journal of Nutrition   Check publisher's open access policy
ISSN 0022-3166
1541-6100
Publication date 1993-10
Sub-type Article (original research)
Volume 123
Issue 10
Start page 1714
End page 1723
Total pages 10
Place of publication Bethesda, MD, United States
Publisher American Society for Nutrition
Language eng
Abstract To determine how dietary energy level and source influence feed intake, growth and energy partitioning during immunologic stress, growing chicks were fed diets based on cornstarch and casein with varying energy densities and injected every other day for 6 d with either saline (control). Salmonella typhimurium lipopolysaccharide or heat-killed Staphylococcus aureus. Salmonella typhimurium lipopolysaccharide decreased growth and feed consumption at low energy densities. When the dietary energy density was increased above 13.4 kJ/g using cornstarch, but not corn oil, the growth depressing effect of immunogens was eliminated. Immunologically stressed chicks had a greater proportion of gain in visceral organs and less in the carcass, regardless of the nutrient density of the diet. Immunologic stress decreased intake of metabolizable energy of chicks fed a diet with low nutrient density and increased it for those fed a diet with high nutrient density. Chicks injected with S. typhimurium lipopolysaccharide lost more energy as heat than controls when differences in metabolizable energy intakes were accounted for and modified their preference between two diets differing in metabolizable energy density and fat content as a result of the challenge. Control chicks selected between the 11.7 and 14.2 kJ/g diets to obtain an energy density of 13.2 kJ/g compared with 12.5 kJ/g in the S. typhimurium lipopolysaccharide-challenged chicks. The S. typhimurium lipopolysaccharide- challenged chicks consumed similar amounts of the low energy diet but decreased intake of the high energy diet.
Keyword Chicks
Immunological stress
Lipopolysaccharide
Acute phase response
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Centre for Nutrition and Food Sciences Publications
 
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Created: Mon, 07 Mar 2011, 16:18:56 EST