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Impact of Dietary Beta-glucan Supplementation on Performance and Immune Response of Broiler Chickens During Challenge

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dc.contributor.authorOtt, Christopher Philipen
dc.contributor.committeechairDalloul, Rami A.en
dc.contributor.committeememberPersia, Michael E.en
dc.contributor.committeememberEvans, Nicholas Paulen
dc.contributor.departmentAnimal and Poultry Sciencesen
dc.date.accessioned2017-02-26T07:00:32Zen
dc.date.available2017-02-26T07:00:32Zen
dc.date.issued2015-09-04en
dc.description.abstractCoccidiosis is a costly parasitic disease to the poultry industry with multiple prevention methods being explored to control its impact. One approach under development is the use of -glucans, which are carbohydrates from cell walls of various plant species. The first study evaluated the feeding effects of algae- derived -glucans on performance and responses of broilers during a coccidiosis challenge. Cobb 500 broilers (n=1280) were fed a control diet, control supplemented with 150 g/MT Algamune (BG), 100 g/MT Algamune ZPC (BGZn), or 0.01% Salinomycin (Sal). On d 15, challenged birds received mixed Eimeria inoculum. Measurements were taken on d 7, 14, 21, and 28, and lesion scores assessed on d 21. The challenge resulted in reduced BW, and higher feed conversion ratio (FCR) was observed in the challenged birds with Sal and BGZn. Escherichia coli (E. coli) is normally commensal to the gastrointestinal tract, but certain serotypes cause disease in domestic poultry. A subsequent study was conducted to evaluate the feeding effects of algae-derived glucan (1,3 -glucan) on performance of broiler chickens during an E. coli challenge. Cobb 500 broilers (n=900) were fed a control diet, control + 25 mg/kg of -glucan, or control + 100 mg/kg of -glucan. On d 0, litter was sprayed with E. coli inoculum. Measurements were taken on d 7, 14, 21, and 28. -glucan supplementation increased BW gain andlowered FCR. The results from these studies offer some insight to the effects of -glucans on poultry and their potential to offset negative effects caused by infectious challenges.en
dc.description.degreeMaster of Scienceen
dc.format.mediumETDen
dc.identifier.othervt_gsexam:6183en
dc.identifier.urihttp://hdl.handle.net/10919/75170en
dc.publisherVirginia Techen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectbroileren
dc.subjectPerformanceen
dc.subjectB-glucanen
dc.subjectcoccidiosisen
dc.subjectE.colien
dc.titleImpact of Dietary Beta-glucan Supplementation on Performance and Immune Response of Broiler Chickens During Challengeen
dc.typeThesisen
thesis.degree.disciplineAnimal and Poultry Sciencesen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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