As only two methods for carcasses disposal are accepted in Ontario: rendering and burial (carcasses covered with at least 0.6 m (2 ft) of soil), composting has been studied as an other alternative. The experiment was realized at the Ridgetown College of Agricultural Technology where two composting protocols (fill for 2 months, compost 2 months turn and compost further for 2 other months; fill for 3 months, turn and compost further for 3 months) were tested and sawdust and straw were used as substrate\/cover. 8 replications were done and 224 carcasses (192 market pig and 32 sow carcasses) were used where each compost heap received 6 carcasses > 100kg and 1 sow > 200kg. Observations showed that the composting process released low level of odour, resulted in fairly complete breakdown of the carcasses when using sawdust and that the demineralization of the skeletal components was good particularly when the sawdust was used. Temperatures were higher using sawdust compared to straw (60 vs. 53 C) and composting continued year round. Composting conditions were kept during the winter however, starting a compost cycle during severe cold winter conditions is not recommended. Further investigations are needed to evaluate the potential for disease transmission to the herd; to evaluate the impact of leachate to the environment; to evaluate other substrates; to develop simpler and less expensive protocol; and to evaluate the performance of chopped straw vs. long straw as sawdust is not always available at prices that can be compared to straw.
\nThe composting process is interesting however as no composting cycle should be started in the cold winter period, this technique doesn’t give a year round solution to carcass disposal. No on-farm provisions is presented for this period of the year. The control of leachates would require some attention in order to prevent contamination.<\/p>\n","protected":false},"excerpt":{"rendered":"
As only two methods for carcasses disposal are accepted in Ontario: rendering and burial (carcasses covered with at least 0.6 m (2 ft) of soil), composting has been studied as an other alternative. The experiment was realized at the Ridgetown College of Agricultural Technology where two composting protocols (fill for 2 months, compost 2 months […]<\/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":[8882,2096,10033,13816,767,700,10241,1972,231,4023,1129,60,4663,12670,286,17701,20007,2771,9053,10858,1063,10859,200,15459,63,14,16262,4257,12671,2120,1358,13154,26245,20912,104,10101,874,35,20911,1252,99,1579,52,20757,10637,3034],"class_list":["post-4968","post","type-post","status-publish","format-standard","hentry","category-environment","tag-al","tag-alternative","tag-arc","tag-ass","tag-compost","tag-composting","tag-composting-with-straw-and-sawdust","tag-condition","tag-cover","tag-cycle","tag-dead-animal","tag-disease","tag-don","tag-down","tag-dust","tag-effect-of-sawdust-disposal","tag-gh","tag-iron","tag-leg","tag-mark","tag-mineral","tag-nat","tag-odour","tag-ped","tag-performance","tag-pig","tag-pl","tag-prices","tag-provis","tag-release","tag-sawdust","tag-sawdust-versus-straw-for-compost","tag-sawdust-vs-straw-for-pigs","tag-some","tag-sow","tag-start","tag-straw","tag-swine","tag-t","tag-technology","tag-temperature","tag-test","tag-treatment","tag-vision","tag-wild-carcass-disposal-ontario","tag-winter"],"_links":{"self":[{"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/4968","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=4968"}],"version-history":[{"count":0,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/4968\/revisions"}],"wp:attachment":[{"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/media?parent=4968"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/categories?post=4968"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/tags?post=4968"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}