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)
\nand 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 \u2013185% 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 earlyand late-gestation was determined by measuring oxidation of the indicator\u00a0amino acid L-[1-13C]-phenylalanine (Phe) during a primed-constant oral\u00a0infusion. The 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.\u00a0Phase 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) and 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 […]<\/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":[1809,2349,46,108,102,1053,14,12621,104],"class_list":["post-14921","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-pig-breeding","tag-sow"],"_links":{"self":[{"href":"https:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/14921","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=14921"}],"version-history":[{"count":1,"href":"https:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/14921\/revisions"}],"predecessor-version":[{"id":14923,"href":"https:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/14921\/revisions\/14923"}],"wp:attachment":[{"href":"https:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/media?parent=14921"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/categories?post=14921"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/tags?post=14921"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}