Confidence interval: A Good Alternative to Repeatability

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dc.contributor.authorMcGilliard, Mike L.en
dc.contributor.authorPearson, Ronald E.en
dc.date.accessioned2015-08-05T18:30:34Zen
dc.date.available2015-08-05T18:30:34Zen
dc.date.issued1980-05en
dc.description.abstractThere is a column labelled "CONF" in your sire summary. This lists a Confidence Interval for each bull's predicted difference for milk (PDM). Anytime we calculate a predicted difference for a bull, we are estimating his true genetic quality to the best of our ability. This Confidence Interval is the range of PDM which probably encompasses the true genetic quality of the bull. The Confidence Interval is directly associated with repeatability as shown in table 1. Any Holstein bull with 70% repeatability has a Confidence Interval of ±254 lbs. of PD milk. This means that a bull such as ABS's Money-Make~ (PDM = 1828) probablyahas a true genetic value between +2082 and +1574 (1828 ± 254).en
dc.format.extent2 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttp://hdl.handle.net/10919/55449en
dc.language.isoen_USen
dc.publisherVirginia Cooperative Extension Serviceen
dc.relation.ispartofseriesDairy Guidelines ; Series 89en
dc.rightsVirginia Cooperative Extension materials are available for public use, re-print, or citation without further permission, provided the use includes credit to the author and to Virginia Cooperative Extension, Virginia Tech, and Virginia State University.en
dc.subject.cabtBullsen
dc.subject.cabtPredicted differenceen
dc.subject.lccLD5655.A762en
dc.subject.lcshDairying -- Periodicalsen
dc.subject.lcshDairy cattle -- Periodicalsen
dc.titleConfidence interval: A Good Alternative to Repeatabilityen
dc.title.alternativeConfidence Interval: A Good Alternative to Repeatabilityen
dc.typeExtension publicationen
dc.type.dcmitypeTexten

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