Validation of flank-to-flank measurements for predicting boar weight

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dc.contributor.author Sulabo, R.C.
dc.contributor.author Quackenbush, J.
dc.contributor.author Nelssen, Jim L.
dc.contributor.author Goodband, Robert D.
dc.contributor.author Tokach, Michael D.
dc.contributor.author DeRouchey, Joel M.
dc.contributor.author Dritz, Steven S.
dc.date.accessioned 2009-10-20T15:50:07Z
dc.date.available 2009-10-20T15:50:07Z
dc.date.issued 2009-10-20T15:50:07Z
dc.identifier.uri http://hdl.handle.net/2097/1867
dc.description.abstract Allometric relationships, in which linear body dimensions are expressed as a function of body weight, are commonly used in growth studies. Previous work at Kansas State University showed a positive correlation between flank-to-flank measurement and sow body weight. Prediction equations were developed to estimate sow weight, but it is not known if the same equation will be valid in estimating body weight among other groups of pigs, such as boars. The objective of this study was to validate the use of flank-to-flank measurement in predicting boar weight, and to determine if the allometric equation for gestating sows can also be used for adult boars. A total of 100 adult working boars in a commercial A.I. stud were selected for this study. Flank-to-flank measurement and body weight were measured on each individual boar. Flank-to-flank measurement was positively correlated to boar body weight (R2 = 0.84, P<0.01). The fit of the model improved slightly (R2 = 0.86, P<0.01) when body weight was expressed as BW0.333. The boar equation was: BW0.333, kg = 0.0458 × flank-to-flank, cm + 1.1838. The comparison of residuals indicated that all three equations accurately predicted boar weight. The sow equation was also shown to be as accurate as the boar equations in estimating boar weight. Therefore, the sow allometric equation can be used as the final model to predict both sow and boar body weight. 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 Boars en_US
dc.subject Flank-to-flank en_US
dc.subject Allometry en_US
dc.subject Prediction equations en_US
dc.subject Weight en_US
dc.subject Swine en_US
dc.title Validation of flank-to-flank measurements for predicting boar weight en_US
dc.type Conference paper en_US
dc.date.published 2006 en_US
dc.citation.epage 23 en_US
dc.citation.spage 19 en_US
dc.contributor.authoreid goodband en_US
dc.contributor.authoreid mtokach en_US
dc.contributor.authoreid dritz en_US
dc.contributor.authoreid jderouch en_US
dc.contributor.authoreid jnelssen en_US

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