| Effects of dietary yeast extract on turkey stress response and heterophil oxidative burst activity. | |
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MedLine Citation:
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PMID: 21919572 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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1. Effective nutritional approaches to counteract the negative effects of stress may provide food animal producers with useful alternatives to antibiotics. In this study, turkeys were fed on a standard diet, or the same diet supplemented with yeast extract (YE), to determine if YE would improve disease resistance in a stress model. 2. At 16 weeks of age, half of the birds were exposed to a bacterial challenge using a coarse spray of the pen environment. A subset of control and challenged birds was also treated with dexamethasone (Dex) prior to challenge (Dex/challenge). At 18 weeks, another subset was subjected to a 12?h transport stress protocol (Challenge/transport). All birds were bled and necropsied the morning after transport. The numbers and proportions of blood cells and the heterophil oxidative burst activity (OBA) were determined. Serum corticosterone (Cort) levels of male birds were measured using a commercial ELISA kit. Body weight and gain were increased by YE during week 1. 3. YE decreased mortality and bacterial isolation following Dex/challenge only in females. Cort levels in male turkeys were decreased by YE and Dex treatment. OBA was higher in males and in birds given YE and was reduced by challenge and transport. 4. These results suggest there may be gender differences in the turkey stress response and that dietary YE has potential for modulating the impact of stress on innate immunity of turkeys. |
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Authors:
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G R Huff; V Dutta; W E Huff; N C Rath |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: British poultry science Volume: 52 ISSN: 1466-1799 ISO Abbreviation: Br. Poult. Sci. Publication Date: 2011 Aug |
Date Detail:
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Created Date: 2011-09-16 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 15740290R Medline TA: Br Poult Sci Country: England |
Other Details:
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Languages: eng Pagination: 446-55 Citation Subset: IM |
Affiliation:
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a USDA Agricultural Research Service , University of Arkansas, Poultry Science Center , Fayetteville AR 72701 , USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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