Show simple item record

dc.contributor.advisorSkaggs, Chrisen_US
dc.creatorBingham, Bobby Cleaveen_US
dc.date.accessioned2012-02-14T22:20:21Zen_US
dc.date.accessioned2012-02-16T16:18:23Z
dc.date.available2012-02-14T22:20:21Zen_US
dc.date.available2012-02-16T16:18:23Z
dc.date.created2011-12en_US
dc.date.issued2012-02-14en_US
dc.date.submittedDecember 2011en_US
dc.identifier.urihttp://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10530en_US
dc.description.abstractIn 1999-2000, the Texas A&M University Ranch to Rail Program evaluated 1311 steers in two feedlots. The first was the Swisher County Cattle Company in Tulia, Texas and the other was Hondo Creek Cattle Company in Edroy, Texas. Data were collected on several traits, but from this project emphasis was placed on preweaning (PreVac) and postweaning (PosVac) vaccinations and the potential influence on growth and carcass traits. Independent variables used in the analyses were location of the feedyard (LOC), PreVac, PosVac, PreVac*PosVac, LOC* PreVac, LOC*PosVac, LOC*PreVac*PosVac, Ranch of origin (RANCH) nested within LOC*PreVac*PosVac, number of days from weaning to shipping to the feedyard (WNTSHP), and days on feed (DOF). Dependent variables evaluated for live cattle traits were average daily gain (ADG), medicine costs (MED), and initial value upon arriving at the feedyard. Dependent variables evaluated for carcass traits were hot carcass weight (HCW), ribeye area (REA), yield grade (YG), and gross value (GROSS). RANCH (P < 0.0001) and DOF (P < 0.0001) had large impacts on ADG. PreVac*PosVac (P = 0.0209), LOC*PosVac (P = 0.0028), RANCH (P < 0.0001), and DOF (P = 0.0003) all had significant effects on MED. PreVac (P < 0.0001), PreVac*PosVac (P < 0.0001), LOC (P < 0.0001), LOC* PreVac*PosVac (P = 0.0002), RANCH (P < 0.0001), and DOF (P < 0.0001) all had significant impact on Initial value. RANCH (P < 0.0001) was the only significant influence on HCW. LOC (P = 0.0587), LOC*PosVac (P = 0.0525), LOC*PreVac*PosVac (P = 0.0594) all had slightly significant effect on HCW. LOC (P < 0.0001) and RANCH (P < 0.0001) had a significant effect on REA while DOF (P = 0.0535) had slight significant effect. LOC (P = 0.0032), RANCH (P < 0.0001), and DOF (P < 0.0001) had significant impact on YG. RANCH (P < 0.0001) had a significant effect and DOF (P = 0.0552) had slight significance on GROSS. The data indicate that RANCH and to a lesser extent DOF have the most influence on both feedyard and carcass traits.en_US
dc.format.mimetypeapplication/pdfen_US
dc.language.isoen_USen_US
dc.subjectpreweaning vaccinationen_US
dc.subjectpostweaning vaccinationen_US
dc.titleEffects of Previous Calf Management on Feedlot and Carcass Traitsen_US
dc.typeThesisen
thesis.degree.departmentAnimal Scienceen_US
thesis.degree.disciplineAnimal Scienceen_US
thesis.degree.grantorTexas A&M Universityen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelMastersen_US
dc.contributor.committeeMemberHerring, Andyen_US
dc.contributor.committeeMemberBoleman, Chrisen_US
dc.type.genrethesisen_US
dc.type.materialtexten_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record