Effects of yeast combined with chromium propionate on growth performance and carcass quality of finishing steers

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dc.contributor.author Vanbibber-Krueger, C. L.
dc.contributor.author Axman, J. E.
dc.contributor.author Gonzalez, John M.
dc.contributor.author Vahl, Christopher I.
dc.contributor.author Drouillard, James S.
dc.date.accessioned 2017-02-14T22:49:33Z
dc.date.available 2017-02-14T22:49:33Z
dc.identifier.uri http://hdl.handle.net/2097/35119
dc.description Citation: Vanbibber-Krueger, C. L., Axman, J. E., Gonzalez, J. M., Vahl, C. I., & Drouillard, J. S. (2016). Effects of yeast combined with chromium propionate on growth performance and carcass quality of finishing steers. Journal of Animal Science, 94(7), 3003-3011. doi:10.2527/jas2016-0454
dc.description.abstract A combination of yeast and chromium propionate (Y+Cr) was added to the diets of crossbred finishing steers (n = 504; 402 kg ± 5.76 initial BW) to evaluate impact on feedlot performance and carcass traits. We hypothesized supplementation of Y+Cr would increase growth of feedlot steers. Steers with initial plasma glucose concentrations ?6.0 mM were stratified by initial BW and randomly allocated, within strata, to receive 0 (control) or 3.3 g/d Y+Cr. Steers were further divided into heavy and light weight blocks with 6 pens/diet within each weight block. Cattle were housed in dirt-surfaced pens with 21 steers/pen and had ad libitum access to feed. Body weights were measured at 21-d intervals. Blood samples were collected on d 49 and 94 from a subset of steers (5/pen) for analyses of plasma glucose and lactate concentrations. At the end of the finishing phase, animals were weighed and transported 450 km to an abattoir in Holcomb, KS. Severity of liver abscesses and HCW were collected the day of harvest, and after 36 h of refrigeration, USDA yield and quality grades, LM area, and 12th rib subcutaneous fat thickness were determined. There were no treatment × time × weight block interactions (P > 0.05) and no treatment × block interaction for ADG, DMI, or final BW (P ? 0.06), but a treatment × block interaction (P = 0.03) was observed for G:F, in which control, light cattle had poorer efficiency compared with other groups. Treatment × weight group interactions were observed for overall yield grade and carcasses that graded yield grade 1 (P ? 0.04). Light steers supplemented with Y+Cr had decreased overall yield grade and increased percentage of carcasses grading yield grade 1 compared with their control counterparts, with no differences observed for heavy steers. Regardless of weight group, a greater percentage of carcasses from steers supplemented with Y+Cr graded yield grade 2 (P = 0.03) and fewer carcasses from steers supplemented Y+Cr graded yield grade 3 (P < 0.01) than control steers. No interactions or effects of treatment were detected for other carcass measurements (P ? 0.07). There were no treatment × weight group interactions or effects of treatment for plasma glucose or lactate concentrations on d 49 or 94 (P > 0.10). Overall, yeast in combination with chromium propionate may improve feed efficiency and decrease yield grade of light cattle but had no effect on remaining carcass traits and blood constituents. © 2016 American Society of Animal Science. All rights reserved.
dc.relation.uri https://doi.org/10.2527/jas.2016-0454
dc.rights © 2016 American Society of Animal Science. All rights reserved. This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
dc.rights.uri http://www.sherpa.ac.uk/romeo/issn/1525-3163/
dc.subject Beef Cattle
dc.subject Carcass Traits
dc.subject Chromium Propionate
dc.subject Glucose
dc.subject Yeast
dc.title Effects of yeast combined with chromium propionate on growth performance and carcass quality of finishing steers
dc.type Article
dc.date.published 2016
dc.citation.doi 10.2527/jas.2016-0454
dc.citation.epage 3011
dc.citation.issn 0021-8812
dc.citation.issue 7
dc.citation.jtitle Journal of Animal Science
dc.citation.spage 3003
dc.citation.volume 94
dc.description.embargo 7/5/2017
dc.contributor.authoreid johngonz
dc.contributor.authoreid vahl
dc.contributor.authoreid jdrouill
dc.contributor.kstate Gonzalez, John M.
dc.contributor.kstate Vahl, Christopher
dc.contributor.kstate Drouillard, James S.
dc.contributor.kstate Vanbibber-Krueger, C. L.
dc.contributor.kstate Axman, J. E.


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