The objective of this study was to determine the lysine\u00a0requirement of a population of 2nd and 3rd parity sows in early- (day 24 \u2013 45)\u00a0and late- (day 86 \u2013 110) gestation.\u00a0Pregnant Hypor Hybrid (Hypor Inc) sows (n=7; 185.7\u00b19.6 kg BW) were\u00a0adapted to individual intakes of a semi-synthetic diet containing 14.0 MJME\/kg. Each sow received 6 different test diets, in random order, from 60 \u2013150% of the requirement suggested by NRC (1998) in early- and from 60 \u2013\u00a0185% of the requirement suggested by NRC (1998) in late-gestation. Actual\u00a0dietary lysine intakes ranged from 7.5 \u2013 19.3 g\/d in early- and 8.1 \u2013 23.7 g\/d in\u00a0late-gestation. Differences between the dietary lysine requirement for early and\u00a0late-gestation was determined by measuring oxidation of the indicator\u00a0amino acid L-[1-13C]-phenylalanine (Phe) during a primed-constant oral\u00a0infusion.\u00a0The average number of piglets born alive was 13.7\u00b11.9, but ranged\u00a0from 4 to 20. The average piglet birth weight was 1.5\u00b10.1 kg. Sows gained\u00a0600 g\/d from breeding and weighed 258.8\u00b18.3 kg before farrowing. Breakpoint\u00a0analysis of Phe oxidation indicated that the lysine requirement of 2nd parity\u00a0sows was 13.1 g\/d and 18.7 g\/d in early- and late-gestation, respectively. For\u00a03rd parity sows, the dietary lysine requirement was 8.2 g\/d and 13.0 g\/d for\u00a0early- and late-gestation, respectively. \u00a0The dietary requirement for lysine in gestation was greater than\u00a0previously reported by NRC (1998). Phase feeding at least two diets would\u00a0improve productivity by more correctly providing the necessary nutrients for\u00a0the growth of the placenta, the piglets, and the mammary gland.<\/p>\n","protected":false},"excerpt":{"rendered":"
The objective of this study was to determine the lysine\u00a0requirement of a population of 2nd and 3rd parity sows in early- (day 24 \u2013 45)\u00a0and late- (day 86 \u2013 110) gestation.\u00a0Pregnant Hypor Hybrid (Hypor Inc) sows (n=7; 185.7\u00b19.6 kg BW) were\u00a0adapted to individual intakes of a semi-synthetic diet containing 14.0 MJME\/kg. Each sow received 6 […]<\/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":[1809,2349,46,108,102,1053,14,104],"class_list":["post-14876","post","type-post","status-publish","format-standard","hentry","category-ontario-pork","category-pork-insight-articles","tag-acid","tag-breed","tag-feed","tag-feeding","tag-gestation","tag-phase-feeding","tag-pig","tag-sow"],"_links":{"self":[{"href":"https:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/14876","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=14876"}],"version-history":[{"count":1,"href":"https:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/14876\/revisions"}],"predecessor-version":[{"id":14879,"href":"https:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/14876\/revisions\/14879"}],"wp:attachment":[{"href":"https:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/media?parent=14876"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/categories?post=14876"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/tags?post=14876"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}