{"id":8152,"date":"2021-10-06T10:43:00","date_gmt":"2021-10-06T14:43:00","guid":{"rendered":"https:\/\/wwwcp.umes.edu\/sans\/?p=8152"},"modified":"2024-01-26T09:05:10","modified_gmt":"2024-01-26T14:05:10","slug":"barnas-receives-doctorate-in-food-and-agricultural-sciences","status":"publish","type":"post","link":"https:\/\/wwwcp.umes.edu\/sans\/sans-news-releases\/barnas-receives-doctorate-in-food-and-agricultural-sciences\/","title":{"rendered":"Barnas receives doctorate in Food and Agricultural Sciences"},"content":{"rendered":"
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Michael (Mike) Barnas <\/strong>defended his thesis, \u201cThe Study of Broiler Gut Health with a Focus on Digesta Viscosity, Coccidiosis and Supplementation with Butyrate,\u201d on April 10.  Barnas, a resident of Delmar, Maryland, now holds a doctorate in food and agricultural sciences from the University of Maryland Eastern Shore.<\/p>\n\n\n\n

The primary objective of Barnas\u2019 study was to determine the utility of existing methods for measuring digesta viscosity. To date, he said, most published methods centrifuge the sample before analysis\u2014a practice that is required to remove the particles and produce a supernatant that can be measured on the viscometer.<\/p>\n\n\n\n

\u201cUsing the Discovery HR-2 Rheometer, both whole and centrifuged digesta were measured for viscosity,\u201d Barnas said.  \u201cAlthough the thickness of the whole digesta was dramatically different in the various areas of the GI tract in 21d old broilers, after centrifugation, the viscosity of the supernatant from the upper (3.302\u00b10.44 cP) and lower (3.391\u00b10.48 cP) GI tract were not significantly different (P > 0.05).\u201d<\/p>\n\n\n\n

 This result, he said, questions the utility of existing methods used to quantify digesta viscosity after centrifugation of the sample, because the process does not simulate the physical movement of digesta in vivo<\/em>. Measuring the viscosity of digesta whole without centrifugation, he found, resulted in low viscosity in the duodenum (3.241\u00b10.657 Pa-s), moderate viscosity in the jejunum (633.1\u00b1173.8 Pa-s) and high viscosity in the ileum (7,013.5\u00b1137.2 Pa-s) of straight-run Cobb-500 broilers at 21 days of age. <\/p>\n\n\n\n

\u201cOpportunities exist to employ rheology in poultry science, but the utility of measuring supernatant, rather than whole digesta viscosity, appears limited,\u201d Barnas said.  \u201cOne potential use for measuring the viscosity of whole, uncentrifuged digesta could be to predict oocysts per gram in digesta as oocysts occupy space like a feed particle and create internal friction.\u201d <\/p>\n\n\n\n

\u201cMike\u2019s work provides valuable insight to poultry gut health.  Ultimately, the health of the intestinal tract contributes to the health and performance of the bird,\u201d said Dr. Jennifer Timmons, assistant professor in UMES\u2019 Department of Agriculture, Food and Resource Sciences and Barnas\u2019 research advisor.<\/p>\n\n\n\n

Barnas is vice president of business development at AHPharma Inc. in Hebron, Maryland.  He also holds a bachelor\u2019s degree in information systems from Salisbury University.<\/p>\n","protected":false},"excerpt":{"rendered":"

Michael (Mike) Barnas defended his thesis, \u201cThe Study of Broiler Gut Health with a Focus on Digesta Viscosity, Coccidiosis and Supplementation with Butyrate,\u201d on April 10.  Barnas, a resident of Delmar, Maryland, now holds a doctorate in food and agricultural sciences from the University of Maryland Eastern Shore. The primary objective of Barnas\u2019 study was to…Read more Barnas receives doctorate in Food and Agricultural Sciences<\/span><\/a><\/span><\/p>\n","protected":false},"author":103,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","wds_primary_category":18,"footnotes":""},"categories":[18],"tags":[],"post_folder":[],"class_list":["post-8152","post","type-post","status-publish","format-standard","hentry","category-sans-news-releases"],"acf":[],"_links":{"self":[{"href":"https:\/\/wwwcp.umes.edu\/sans\/wp-json\/wp\/v2\/posts\/8152","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wwwcp.umes.edu\/sans\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wwwcp.umes.edu\/sans\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wwwcp.umes.edu\/sans\/wp-json\/wp\/v2\/users\/103"}],"replies":[{"embeddable":true,"href":"https:\/\/wwwcp.umes.edu\/sans\/wp-json\/wp\/v2\/comments?post=8152"}],"version-history":[{"count":0,"href":"https:\/\/wwwcp.umes.edu\/sans\/wp-json\/wp\/v2\/posts\/8152\/revisions"}],"wp:attachment":[{"href":"https:\/\/wwwcp.umes.edu\/sans\/wp-json\/wp\/v2\/media?parent=8152"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wwwcp.umes.edu\/sans\/wp-json\/wp\/v2\/categories?post=8152"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wwwcp.umes.edu\/sans\/wp-json\/wp\/v2\/tags?post=8152"},{"taxonomy":"post_folder","embeddable":true,"href":"https:\/\/wwwcp.umes.edu\/sans\/wp-json\/wp\/v2\/post_folder?post=8152"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}