Research on the space requirements for pigs housed in large groups and on deep-straw bedding is limited. Group size was either 20 or 80 pigs per pen. The pigs were housed on deep straw and provided with either a low (50 kg\/m2) or high (32 kg\/m2) space allowance. Overall, low space allowance did not have an effect on average daily gain (ADG) but it did tend to improve growth efficiency. Pigs housed in groups of 80 had a lower ADG than pigs in groups of 20. The variation of ADG within each pen was similar for each treatment. At the low space allowance, there was a higher incidence of skin lesions among pigs. When exposed to an antigen challenge (Newcastle disease virus), pigs housed in the small space allowance had a lower humoral response. In conclusion, it was suggested that the welfare of pigs housed at the low space allowance was compromised. The lack of interaction between space allowance and group size, the poorer ADG seen in large groups, and the higher lesion scores and suppressed immune response of pigs housed under restricted space allowance were evidence of this conclusion.<\/p>\n","protected":false},"excerpt":{"rendered":"
Research on the space requirements for pigs housed in large groups and on deep-straw bedding is limited. Group size was either 20 or 80 pigs per pen. The pigs were housed on deep straw and provided with either a low (50 kg\/m2) or high (32 kg\/m2) space allowance. Overall, low space allowance did not have […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[928],"tags":[88,8882,10033,1465,1582,19644,2499,60,527,20007,2788,651,517,158,14804,6577,3794,6258,2791,818,63,14,33,15530,14980,1533,51,5118,20911,10394,14923,14909,52,1055,27281],"class_list":["post-285","post","type-post","status-publish","format-standard","hentry","category-welfare","tag-aggression","tag-al","tag-arc","tag-average-daily-gain","tag-bedding","tag-dd","tag-deep-littergroup-sizeimmune-responseperformancepigspace-allowanceaggressionimmune-competencepigsstraw","tag-disease","tag-efficiency","tag-gh","tag-group-size","tag-growing-pig","tag-growing-pigs","tag-growth","tag-hal","tag-immune","tag-immune-response","tag-large-group","tag-large-groups","tag-litter","tag-performance","tag-pig","tag-pigs","tag-pigs-per-pen","tag-search","tag-size","tag-space","tag-space-requirements","tag-t","tag-the-effect-of-space-allowed-on-performance-aggression-and-immune-competence-of-growing-pigs-housed-on-straw-deep-litter-at-different-group-sizes","tag-the-welfare","tag-the-welfare-of","tag-treatment","tag-variation","tag-welfare"],"_links":{"self":[{"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/285","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=285"}],"version-history":[{"count":0,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/285\/revisions"}],"wp:attachment":[{"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/media?parent=285"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/categories?post=285"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/tags?post=285"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}