Recent data suggests that gestating sows have a greater capacity to digest\u00a0dietary protein than growing pigs and thus different values for amino acid\u00a0availability should be used when formulating sow diets.\u00a0The MA of threonine in corn and barley in six gestating gilts (146 \u00b1 4 kg BW)\u00a0was determined using the indicator amino acid oxidation technique. A paired\u00a0study using six growing pigs (146 \u00b1 4 kg BW) and corn was conducted to\u00a0allow a direct comparison between a) determined MA values and published\u00a0TID values for growing pigs and b) the determined MA for sows and growing\u00a0pigs. Pigs were fed reference diets with increasing synthetic THR from 50 \u2013 80\u00a0% of requirement; all other nutrients were provided in excess. Test ingredient\u00a0diets were formulated to 80 % of requirement by inclusion of corn or barley.\u00a0On collection day, L [1-13C] and L [1-14C] phenylalanine (sows and growers,\u00a0respectively) was given orally in eight \u00bd-hourly meals and expired 13CO2 and 13CO2 was quantified. The Mixed model in SAS was used to determine the\u00a0change (slope) in indicator oxidation per gram of total dietary THR from reference and test diets. The MA of THR was calculated as the slope for THR\u00a0from test diets divided by the slope for THR from reference diets. \u00a0The MA method gives results not different from TID. The\u00a0bioavailability of amino acids in feedstuffs is greater in sows than in growing pigs.<\/p>\n","protected":false},"excerpt":{"rendered":"
Recent data suggests that gestating sows have a greater capacity to digest\u00a0dietary protein than growing pigs and thus different values for amino acid\u00a0availability should be used when formulating sow diets.\u00a0The MA of threonine in corn and barley in six gestating gilts (146 \u00b1 4 kg BW)\u00a0was determined using the indicator amino acid oxidation technique. A […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18120,19],"tags":[1809,46,105,14,104,18011],"class_list":["post-14931","post","type-post","status-publish","format-standard","hentry","category-ontario-pork","category-pork-insight-articles","tag-acid","tag-feed","tag-gilt","tag-pig","tag-sow","tag-tot"],"_links":{"self":[{"href":"https:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/14931","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/comments?post=14931"}],"version-history":[{"count":3,"href":"https:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/14931\/revisions"}],"predecessor-version":[{"id":14936,"href":"https:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/14931\/revisions\/14936"}],"wp:attachment":[{"href":"https:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/media?parent=14931"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/categories?post=14931"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/tags?post=14931"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}