{"id":4562,"date":"2009-01-01T01:01:01","date_gmt":"2009-01-01T01:01:01","guid":{"rendered":"http:\/\/export.maxmaziy.php.nixsolutions.com\/?p=4562"},"modified":"2011-12-06T12:34:56","modified_gmt":"2011-12-06T18:34:56","slug":"genetic-parameters-for-measures-of-residual-feed-intake-and-growth-traits-in-seven-generations-of-duroc-pigs","status":"publish","type":"post","link":"http:\/\/prairieswine.com\/rsc\/genetic-parameters-for-measures-of-residual-feed-intake-and-growth-traits-in-seven-generations-of-duroc-pigs\/","title":{"rendered":"Genetic parameters for measures of residual feed intake and growth traits in seven generations of Duroc pigs"},"content":{"rendered":"<p>RFI is estimated by the difference between actual and predicted feed intake for an animal. The predicted feed intake<br \/>\nis the amount of feed the animal is expected to consume on the basis of its maintenance and production. Variation in RFI<br \/>\nmay reflect differences in the efficiency with which animals digest and utilize energy for maintenance and production. The objective of this study was to estimate genetic parameters for and genetic relationships between measures of RFI and growth traits, and to examine the genetic trends of these traits in Duroc pigs over seven generations of selection based on average daily gain (ADG), loin eye area (LEA), backfat thickness (BF), and intramuscular fat (IMF). Results of this study indicate that residual feed intake was moderately heritable, and should respond to selection.<br \/>\nGenetic correlations indicate that it should be possible to select for reduced residual feed intake without adversely<br \/>\naffecting average daily gain. Daily feed intake and backfat would also decrease, and eye muscle area would increase. The<br \/>\namount of change in backfat or eye muscle area would depend on which measure of residual feed intake one uses.<\/p>\n<p>For more information the full article can be found at <a href=\"http:\/\/www.journals.elsevierhealth.com\/periodicals\/livsci\">http:\/\/www.journals.elsevierhealth.com\/periodicals\/livsci<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>RFI is estimated by the difference between actual and predicted feed intake for an animal. The predicted feed intake is the amount of feed the animal is expected to consume on the basis of its maintenance and production. Variation in RFI may reflect differences in the efficiency with which animals digest and utilize energy for [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[930],"tags":[8882,640,1465,4262,7369,2559,8080,20323,527,27278,2851,6904,46,16362,925,3804,3362,3749,158,7370,111,14784,14,33,17743,27282,7371,20911,1055],"class_list":["post-4562","post","type-post","status-publish","format-standard","hentry","category-production","tag-al","tag-animal","tag-average-daily-gain","tag-backfat","tag-breeding-value","tag-duroc","tag-duroc-pig","tag-duroc-pigs","tag-efficiency","tag-energy","tag-fat","tag-fee","tag-feed","tag-feed-efficiency-health","tag-feed-intake","tag-genetic","tag-genetic-parameter","tag-genetic-parameters","tag-growth","tag-growth-traits","tag-health","tag-ness","tag-pig","tag-pigs","tag-prod","tag-production","tag-residual-feed-intake","tag-t","tag-variation"],"_links":{"self":[{"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/4562","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=4562"}],"version-history":[{"count":2,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/4562\/revisions"}],"predecessor-version":[{"id":10985,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/4562\/revisions\/10985"}],"wp:attachment":[{"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/media?parent=4562"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/categories?post=4562"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/tags?post=4562"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}