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dc.contributor.advisorWiegand, Bryoneng
dc.contributor.authorSchnurbusch, Teagan Raeeng
dc.date.embargountil12/1/2024
dc.date.issued2023eng
dc.date.submitted2023 Falleng
dc.description.abstract[EMBARGOED UNTIL 12/1/2024] Beef x dairy has increased in popularity, altering the U.S fed beef supply. The objective of this dissertation was to evaluate the effect of Holstein x SimAngus (Hol x SimAngus) breeding and growth management on growth performance, carcass composition, and carcass performance. Experiment 1 used Holstein steers, Hol x SimAngus steers, and Hol x SimAngus heifers to evaluate differences of beef x dairy compared to Holstein steers for growth performance, carcass performance, carcass yield, and fresh meat quality. Hol x SimAngus cattle exhibited lesser carcass length (P<0.05) and carcass widths (P<0.01) compared to Holstein steers. Hol x SimAngus cattle exhibited greater ribeye roll weights and greater strip loin weights compared to Holstein steers (P<0.04). For the entirety of the ribeye roll and strip loin, LD surface area was greater for Hol x SimAngus cattle compared to Holstein steers (P<0.05). After 7 days in simulated retail display, Hol x SimAngus strip steaks exhibited greater a* values (P<0.04) and lesser percent metmyoglobin (P<0.03) compared to Holstein steers. Experiment 2 used Holstein steers, Hol x SimAngus steers, Hol x SimAngus heifers, SimAngus steers and SimAngus heifers to evaluate beef x dairy compared to dairy type and conventional beef models for growth performance, carcass performance, carcass yield, and fresh meat quality. When taken to a weight constant endpoint, minimal differences were observed for growth performance during the finishing phase among Holsteins, Hol x SimAngus, and SimAngus cattle. Hol x SimAngus and SimAngus cattle exhibited greater ribeye roll weights and greater strip loin weights compared to Holstein steers (P<0.04). For the entirety of the strip loin, LD surface area was greater for Hol x SimAngus and SimAngus cattle compared to Holstein steers (P<0.05). These data indicate the importance of beef x dairy to the beef production system. Specifically, Hol x SimAngus cattle result in greater carcass performance and yields compared to Holsteins. Furthermore, Hol x SimAngus cattle yielded carcass results that were similar to conventional SimAngus beef.eng
dc.description.bibrefIncludes bibliographical references.eng
dc.format.extentxv, 162 pages : illustrations (color)eng
dc.identifier.urihttps://hdl.handle.net/10355/98791
dc.identifier.urihttps://doi.org/10.32469/10355/98791eng
dc.languageEnglisheng
dc.publisherUniversity of Missouri--Columbiaeng
dc.relation.ispartofcommunityUniversity of Missouri--Columbia. Graduate School. Theses and Dissertationseng
dc.titleA systems approach to deriving carcass value from Holstein x SimAngus cattle in an accelerated finishing modeleng
dc.typeThesiseng
thesis.degree.disciplineAnimal Sciences (MU)eng
thesis.degree.grantorUniversity of Missouri--Columbiaeng
thesis.degree.levelDoctoraleng
thesis.degree.namePh. D.eng


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