One way to improve air quality inside houses for fattening pigs is to locate the air inlet near the breathing zones of pigs and the stockman and the outlet near the main source of contaminants, i.e. the slatted floor and slurry pit. This may increase the total emission of ammonia by speeding up the airflow above the emitting area. To investigate this, a ventilation system with the inlet in the feeding passage and the outlet just above the slatted floor (system F) was compared with a system common in the Netherlands having a high, diffuse inlet and a high outlet (system C). The two ventilation systems were installed in each of two rooms in an experimental house. A layer of oil was used on the slurry to decrease the volatilization of ammonia from the pit. Continuous measurements were made of the ventilation rate and of the ammonia concentrations in the air inlet and outlet, in the slurry pit, and at animal level on the solid and slatted floors. Dust concentrations were measured 1.5 m above the floor in the feeding passage. The urine-wetted area of the solid floor was recorded. In comparison with system C, system F gave significantly lower values for dust concentration in the feeding passage (P<0.001) and for ammonia concentration at animal level on the solid and slatted floors (P<0.05). There was no difference between ventilation systems with regard to ammonia emission or the urine-wetted area of the solid floor. It is concluded that air quality in houses for fattening pigs can be improved by a low air inlet in the floor of the feeding passage and a low outlet just above the slatted floor and slurry pit, instead of a high diffuse inlet and a high outlet; these locations do not affect the total emission of ammonia to the environment.\n<\/p>\n","protected":false},"excerpt":{"rendered":"
One way to improve air quality inside houses for fattening pigs is to locate the air inlet near the breathing zones of pigs and the stockman and the outlet near the main source of contaminants, i.e. the slatted floor and slurry pit. This may increase the total emission of ammonia by speeding up the airflow […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[20862,456,8882,229,1534,10136,14314,640,13816,4564,758,286,313,1535,2851,7904,6904,46,108,171,20007,2771,1675,16929,1994,14,33,95,803,534,210,4599,20911,18011,1213,6053,274,799],"class_list":["post-1065","post","type-post","status-publish","format-standard","hentry","category-environment","tag-aarnink-a-j-a-wagemans-m-j-m-1997-ammonia-volatilization-and-dust-concentration-as-affected-by-ventilation-systems-in-houses-for-fattening-pigs-transactions-of-the-asae-40-1161-1170","tag-air-quality","tag-al","tag-ammonia","tag-ammonia-emission","tag-ammonia-volatilization-and-dust-concentration-as-affected-by-ventilation-systems-in-houses","tag-ammonia-volatilization-and-dust-concentration-as-affected-by-ventilation-systems-in-houses-for-fattening-pigs","tag-animal","tag-ass","tag-comparison","tag-concentration","tag-dust","tag-emission","tag-excretory-behavior","tag-fat","tag-fattening","tag-fee","tag-feed","tag-feeding","tag-floor","tag-gh","tag-iron","tag-location","tag-mjm-wagemans","tag-netherlands","tag-pig","tag-pigs","tag-quality","tag-slatted-floor","tag-slatted-floors","tag-slurry","tag-stall","tag-t","tag-tot","tag-urine","tag-use","tag-ventilation","tag-ventilation-system"],"_links":{"self":[{"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/1065","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=1065"}],"version-history":[{"count":0,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/1065\/revisions"}],"wp:attachment":[{"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/media?parent=1065"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/categories?post=1065"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/tags?post=1065"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}