Predicting growth rates of adult working boars in a commercial boar stud

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dc.contributor.author Sulabo, R.C.
dc.contributor.author Quackenbush, J.
dc.contributor.author Goodband, Robert D.
dc.contributor.author Tokach, Michael D.
dc.contributor.author DeRouchey, Joel M.
dc.contributor.author Nelssen, Jim L.
dc.contributor.author Dritz, Steven S.
dc.date.accessioned 2009-10-20T15:53:38Z
dc.date.available 2009-10-20T15:53:38Z
dc.date.issued 2009-10-20T15:53:38Z
dc.identifier.uri http://hdl.handle.net/2097/1868
dc.description.abstract There is almost no information on ideal growth rates for adult boars, but estimates can be made if the relationship between boar weight and age is known. Therefore, this study was aimed to predict growth rates in adult working boars in a commercial boar stud. A total of 214 adult working boars from two genetic lines in a commercial boar stud were individually weighed on a platform scale. Age of the boar was recorded at the time of weighing. A regression equation to predict boar weight as a function of age was developed by using PROC REG of SAS. The model was used to predict BW on a daily basis, and ADG was derived as the difference between two predicted BW values. Factorial estimates of daily ME requirement and feeding rates were determined. The energy requirement for weight gain was computed by using the predicted ADG as a guide in setting target weight gains. Results showed a positive curvilinear response (P<0.01) to describe the relationship between boar weight and age. Predicted ADG decreased in a curvilinear manner as the boars aged. In conclusion, on-farm growth rates can be predicted effectively by relating weight with age, taken from a representative number of boars in a given farm population. These data can then be used to develop farm specific feeding programs or to set different growth curves for experimental purposes. 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 Growth rate en_US
dc.subject Prediction equations en_US
dc.subject Swine en_US
dc.title Predicting growth rates of adult working boars in a commercial boar stud en_US
dc.type Conference paper en_US
dc.date.published 2006 en_US
dc.citation.epage 18 en_US
dc.citation.spage 13 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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