{"id":6678,"date":"2009-09-02T16:00:17","date_gmt":"2009-09-02T16:00:17","guid":{"rendered":"http:\/\/prairieswine.com\/rsc\/?p=6678"},"modified":"2011-11-14T22:06:58","modified_gmt":"2011-11-14T22:06:58","slug":"dust-concentration-variation-in-relation-to-animal-activity-in-a-pig-barn","status":"publish","type":"post","link":"http:\/\/prairieswine.com\/rsc\/dust-concentration-variation-in-relation-to-animal-activity-in-a-pig-barn\/","title":{"rendered":"Dust concentration variation in relation to animal activity in a pig barn"},"content":{"rendered":"<p>The contribution of animal activity to dust concentration in a pig barn, was evaluated through the continuous monitoring of animal activity. PM<sub>10<\/sub> concentrations were measured during a three months observation period, from April to July, in a mechanically ventilated fattening room in Northern Italy. Pigs of 60\u00a0kg and with a mean age of 150 days were fed with liquid feed and were lodged on concrete fully slatted floor. PM<sub>10<\/sub> concentration was monitored continuously by a dust sampler. From April 12 at 13:42 until April 13 at 15:09, 33 pigs housed in two of the 16 pens of the barn were monitored using a video camera placed at the height of 5\u00a0m above the pen floor. A comparison of data related to dust measurement and to activity index was performed on the hours of recorded images. PM<sub>10<\/sub> concentration reached maximum values at feeding times, during feed release and with lights turned on. An increase in dust concentration took place within an hour after increased animal activity. PM<sub>10<\/sub> concentration decreased until it reached the nocturnal mean concentration (316\u00a0\u03bcg\u00a0m<sup>\u22123<\/sup>) after 1\u00a0h from feeding time. As expected, correlation analysis showed that particulate matter concentration was associated with ventilation rate (70%, <em>P<\/em>\u00a0&lt;\u00a00.001), with relative humidity (\u221293%, <em>P<\/em>\u00a0&lt;\u00a00.001), with inside and outside temperatures which determine ventilation rate <em>a priori<\/em>, and finally with animal activity (99%, <em>P<\/em>\u00a0&lt;\u00a00.001). These results confirmed the strong association that exists between animal activity and particulate matter concentration in animal houses. An increase in PM<sub>10<\/sub> concentration from 316\u00a0\u03bcg\u00a0m<sup>\u22123<\/sup> (the mean value of dust levels was\u00a0observed at night when the recorded animal activity showed the lowest values) to 624\u00a0\u03bcg\u00a0m<sup>\u22123<\/sup> corresponded to the dust raised by 343 animals (with an increase in animal activity of 0.018 units), in a mechanically ventilated barn with fattening pigs fed with liquid feed, and lodged on a fully slatted concrete floor.<\/p>\n<p>For the full text please subscribe to the Journal of Biosystems Engineering<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The contribution of animal activity to dust concentration in a pig barn, was evaluated through the continuous monitoring of animal activity. PM10 concentrations were measured during a three months observation period, from April to July, in a mechanically ventilated fattening room in Northern Italy. Pigs of 60\u00a0kg and with a mean age of 150 days [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[8882,640,13816,1060,15866,16813,4564,758,286,17068,2917,27280,2851,7904,6904,46,108,171,20007,1806,12622,5381,8279,25120,14,21244,33,16262,2120,803,20911,99,1055,274,26232,11771],"class_list":["post-6678","post","type-post","status-publish","format-standard","hentry","category-environment","tag-al","tag-animal","tag-ass","tag-barn","tag-biosystems-engineering","tag-camera","tag-comparison","tag-concentration","tag-dust","tag-dust-concentration-in-a-hog-barn","tag-engineering","tag-environment","tag-fat","tag-fattening","tag-fee","tag-feed","tag-feeding","tag-floor","tag-gh","tag-humidity","tag-images","tag-light","tag-liquid-feed","tag-nocturnal","tag-pig","tag-pig-barn","tag-pigs","tag-pl","tag-release","tag-slatted-floor","tag-t","tag-temperature","tag-variation","tag-ventilation","tag-video","tag-www-prairieswine-com"],"_links":{"self":[{"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/6678","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/comments?post=6678"}],"version-history":[{"count":5,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/6678\/revisions"}],"predecessor-version":[{"id":9633,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/6678\/revisions\/9633"}],"wp:attachment":[{"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/media?parent=6678"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/categories?post=6678"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/tags?post=6678"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}