The effects of frequent out-of-feed events on growth performance of nursery, growing, and finishing pigs


Show simple item record Linneen, S.K. Goodband, Robert D. Tokach, Michael D. DeRouchey, Joel M. Nelssen, Jim L. Dritz, Steven S. 2009-10-20T16:27:06Z 2009-10-20T16:27:06Z 2009-10-20T16:27:06Z
dc.description.abstract An “out-of-feed” event is defined as a period of time that pigs do not have access to feed as a result of late feed delivery (feeders running empty) or bridging of bulk bins, feed lines, or feeders. To determine the effects of these out-of-feed events on pig growth performance, nursery and growing-finishing pig studies were conducted. In Exp. 1, 190 pigs (initial wt 14.0 lb) were allotted to one of four experimental treatments. Treatments included a 20-hour feed withdrawal for 1, 2, or 3 randomly selected times during the 35-d trial or a control treatment in which feeders were never withdrawn. Feeders were withdrawn on d 11 for pigs with 1 out-of-feed event, d 8 and 23 for pigs with 2 out-of-feed events, and d 9, 14, and 20 for pigs with 3 out-of-feed events. Throughout the study, the week in which an out-of-feed event occurred, ADG and ADFI were decreased (P<0.06), compared with those of control pigs. In some instances, if the out-of-feed event occurred early in the week, pig growth performance was intermediate to that of control pigs and the other pigs with an out-of-feed event later in the week. In the following week, however, pigs that had an outof- feed event in the previous week had improved ADG and F/G, compared with performance of the others. For the overall study, there were no differences in growth performance among pigs with 0, 1, 2, or 3 out-of-feed events. In Exp. 2, 479 growing-finishing pigs were used in an 85-d trial in a commercial finishing barn to determine the effects of frequency and timing of out-of-feed events on pig performance. Treatments included feed withdrawal (20 h) weekly for the duration of the trial, feed withdrawn weekly from d 45 to 85 (market wt), or a control treatment in which pigs had access to feed for the duration of the trial. Feed withdrawal occurred on a randomly selected day, with the exception of Saturday, Sunday, or a day before a weigh day (usually a Wednesday every other week). There were no differences (P>0.13) in growth performance throughout the 85-d trial. With weekly out-of-feed events in the finishing phase, there is a possibility that pigs may quickly learn to adjust their feed intake for the out-of-feed event. In this study, however, results suggest that out-of-feed events (20 h or less) will have no long-term effects on growth performance in nursery or growing-finishing pigs. en_US
dc.publisher Kansas State University. Agricultural Experiment Station and Cooperative Extension Service en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution; no. 08-83-S en_US
dc.relation.isPartOf Swine day, 2006 en_US
dc.relation.isPartOf Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 966 en_US
dc.subject Finishing pigs en_US
dc.subject Feed management en_US
dc.subject Out-of-feed events en_US
dc.subject Starter pig en_US
dc.subject Swine en_US
dc.title The effects of frequent out-of-feed events on growth performance of nursery, growing, and finishing pigs en_US
dc.type Conference paper en_US 2006 en_US
dc.citation.epage 157 en_US
dc.citation.spage 153 en_US
dc.description.conference Swine Day, 2006, Kansas State University, Manhattan, KS, 2006 en_US
dc.contributor.authoreid goodband en_US
dc.contributor.authoreid dritz en_US
dc.contributor.authoreid mtokach en_US
dc.contributor.authoreid jderouch en_US
dc.contributor.authoreid jnelssen en_US

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