Estimates of efficiency of Dorper and Rambouillet lambs.

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Estimates of efficiency of Dorper and Rambouillet lambs.

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dc.contributor.advisor Waldron, Dan
dc.contributor.author Yeaman, Jessup
dc.contributor.other Angelo State University. Department of Agriculture.
dc.creator Yeaman, Jessup
dc.date.accessioned 2011-05-03T20:03:15Z
dc.date.available 2011-05-03T20:03:15Z
dc.date.issued 2011-05-03T20:03:15Z
dc.date.submitted April 2011
dc.identifier.uri http://hdl.handle.net/2346.1/13
dc.description.abstract Feed intake and body weight were recorded on thirty-seven Dorper ram lambs and forty-two Rambouillet ram lambs from weaning to 61kg of body weight to determine feed conversion efficiency. The data were collected over a two year period. Lambs were progeny of 6 unrelated sires per breed. Lambs were approximately 90 days of age and 31kg body weight at the start of the trial. Lambs were fed a commercially prepared, pelleted diet with an average crude protein content of 16% and TDN of 70.5%. Lambs were divided into groups of 10-11 containing both breeds, and fed using FIRE (Feed Intake Recording Equipment, Osborne Industries, Inc, Osborne, KS, USA). Lambs were identified using a unique electronic identification ear tag transponder. Feed intake was recorded electronically and lambs were weighed every two weeks. Data were analyzed using SAS PROC MIXED with a model that included breed and birth type as fixed effects, a random effect for sire, and starting weight as a covariate. In both years of the trial, breed was not found to have a statistically significant effect on ADG or FCE (p>0.05). Post weaning feed efficiency was similar between Dorper and Rambouillet lambs. The Dorpers’ total ADG was 340 g/d; the Rambouillets’ was 342 g/d. The Dorpers’ average FCE was 0.159; the Rambouillets’ was 0.158. Over the post weaning period studied there was no advantage shown by either breed. en
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.subject Diet
dc.subject Feed Intake Recording Equipment
dc.subject Rambouillet
dc.subject Dorper
dc.subject feed efficiency
dc.subject.lcsh Rambouillet sheep
dc.subject.lcsh Dorper sheep
dc.subject.lcsh Feed utilization efficiency
dc.subject.lcsh Research
dc.title Estimates of efficiency of Dorper and Rambouillet lambs. en
dc.type Other en
dc.type.material text
dc.type.genre thesis
thesis.degree.name M.S.
thesis.degree.level Masters
thesis.degree.discipline Animal Science
thesis.degree.grantor Angelo State University
thesis.degree.department Agriculture
dc.contributor.committeeMember Craddock, B. Frank
dc.contributor.committeeMember Engdahl, Gil
dc.contributor.committeeMember Salisbury, Michael
dc.contributor.committeeMember Scott, David

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