Control odour emissions by dietary manipulations involve could be an interesting odour reduction mean as the intervention on odour is done at the beginning of the waste management process and could limit the need for air treatment investments. Two experimental reduce crude protein (RCP) diets were tested against a commercial diet (CD) as feed to fattening pigs. The first RCP diet was made out of bean and peas (BP) and the other one was fishmeal and soya based (FS), both contained barley and wheat and were supplemented synthetic amino acids to obtained an ideal ratio of essential amino acids. Gas chromatography – mass spectrometry was used to identify and quantify the major odour components found in the headspace of fresh pig slurry. Results showed in comparison with CD results, that 9 out of 10 odorous components were reduced in the slurry produced by the pigs fed the FS (P<0.05) as for the BP, reduction was measured for 4 odorants (P<0.05). This shows that not only the crude protein content of a diet has an effect on odorants production but also the diet components affect the odour components of found in the headspace of the fresh manure. For both BP and FS, the ammonia emissions were reduced by 40% compare to CD and other parameters such as pH, dry matter content, total and organic nitrogen were also reduced.\n\nThe reduction of odorous compounds by the reduction of the crude protein in the diet is very interesting because this reduction is done directly as the manure is produced. However a reduction of certain components may not necessarily mean odour reduction as the authors present it. Odour from slurry comes from many different components and conclusions could not be drawn on measured reductions of 10 compounds. Furthermore the hedonic odor tone (pleasant or unpleasant) has also to be verified to conclude on an improvement in the odor.\n<\/p>\n","protected":false},"excerpt":{"rendered":"
Control odour emissions by dietary manipulations involve could be an interesting odour reduction mean as the intervention on odour is done at the beginning of the waste management process and could limit the need for air treatment investments. Two experimental reduce crude protein (RCP) diets were tested against a commercial diet (CD) as feed to […]<\/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":[1809,25957,8882,580,229,2632,13816,364,4564,3965,1414,577,1287,23694,4663,864,313,314,206,2851,7904,6904,46,16771,316,317,269,48,1694,169,207,187,198,199,200,240,202,3465,1951,14,1034,33,16262,17743,27282,210,51,20911,1709,1579,18011,52,6053,766,660,934],"class_list":["post-1627","post","type-post","status-publish","format-standard","hentry","category-environment","tag-acid","tag-air-treatment","tag-al","tag-amino-acids","tag-ammonia","tag-ammonia-emissions","tag-ass","tag-barley","tag-comparison","tag-content","tag-crude-protein","tag-diet","tag-diets","tag-dir","tag-don","tag-dry-matter","tag-emission","tag-emissions","tag-evaluation","tag-fat","tag-fattening","tag-fee","tag-feed","tag-fishmeal","tag-gas","tag-gas-emission","tag-heat","tag-management","tag-manipulation","tag-manure","tag-measurement","tag-nitrogen","tag-odor","tag-odors","tag-odour","tag-odour-reduction","tag-odours","tag-pea","tag-peas","tag-pig","tag-pig-slurry","tag-pigs","tag-pl","tag-prod","tag-production","tag-slurry","tag-space","tag-t","tag-technical-control","tag-test","tag-tot","tag-treatment","tag-use","tag-waste","tag-waste-management","tag-wheat"],"_links":{"self":[{"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/1627","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=1627"}],"version-history":[{"count":0,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/1627\/revisions"}],"wp:attachment":[{"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/media?parent=1627"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/categories?post=1627"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/tags?post=1627"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}