Performance, carcass traits and fatty acid profiles of yearling beef cattle supplemented with self-fed byproducts on pasture

dc.contributor.advisor Daniel G. Morrical
dc.contributor.author Kiesling, Daniel
dc.contributor.department Department of Animal Science
dc.date 2018-08-11T14:08:02.000
dc.date.accessioned 2020-06-30T02:47:29Z
dc.date.available 2020-06-30T02:47:29Z
dc.date.copyright Tue Jan 01 00:00:00 UTC 2013
dc.date.embargo 2012-11-25
dc.date.issued 2013-01-01
dc.description.abstract <p>Due to rising costs of conventional feedstuffs, more research has been focused on feeding non-conventional feedstuffs, such as byproducts of ethanol production or further processing of grains (i.e. soyhulls). Because of the health benefits of conjugated linoleic acid (CLA) shown in studies on laboratory animals, consumer interest in foods enriched with CLA has increased. The objective of this study was to investigate the effects of finishing yearling market steers on pasture supplemented with combinations of self-fed byproducts on live animal performance, carcass traits and fatty acid profiles; specifically CLA. British and Continental crossbred beef steers (n = 162, BW = 404 ± 29 kg) were stocked on cool season grass pastures (5.6 hd/ha) while being supplemented with ad libitum byproduct supplement. Cattle were supplemented with soyhulls and dried distillers grain with solubles (DDGS) or corn and DDGS offered through self-feeders. Supplements were mixed at a 1:1 ratio with a mineral balancer that included Rumensin®. Supplement effects were observed only for fatty acid profiles. Values for CLA were greater for cattle fed soyhulls-DDGS (0.63 vs. 0.44 mg/g muscle, P < 0.0001) compared to cattle supplemented corn-DDGS. Live cattle performance and carcass traits were not affected by supplement. This pasture-based system of production is an opportunity for producers to increase income from non-tillable, erodible acres.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/etd/13121/
dc.identifier.articleid 4128
dc.identifier.contextkey 4250768
dc.identifier.doi https://doi.org/10.31274/etd-180810-1893
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath etd/13121
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/27310
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/etd/13121/2013_KieslingDD_PerformanceCarcassTraits.pdf|||Fri Jan 14 19:45:09 UTC 2022
dc.subject.disciplines Agriculture
dc.subject.disciplines Animal Sciences
dc.subject.keywords beef cattle
dc.subject.keywords conjugated linoleic acid
dc.subject.keywords dried distillers grains
dc.subject.keywords soyhulls
dc.title Performance, carcass traits and fatty acid profiles of yearling beef cattle supplemented with self-fed byproducts on pasture
dc.type thesis
dc.type.genre thesis
dspace.entity.type Publication
relation.isOrgUnitOfPublication 85ecce08-311a-441b-9c4d-ee2a3569506f
thesis.degree.level thesis
thesis.degree.name Master of Science
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