Feeding Lactating Holstein Dairy Cows Reduced-Fat Dried Distillers Grains with Solubles: Milk Composition and Feed Efficiency

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dc.contributor.author Testroet, Eric
dc.contributor.author Clark, Stephanie
dc.contributor.author O'Neil, Mathew
dc.contributor.author Mueller, Andrew
dc.contributor.author Beitz, Donald
dc.contributor.author Clark, Stephanie
dc.date 2018-08-25T19:22:56.000
dc.date.accessioned 2020-06-29T23:36:58Z
dc.date.available 2020-06-29T23:36:58Z
dc.date.copyright Sun Jan 01 00:00:00 UTC 2017
dc.date.issued 2017-01-01
dc.description.abstract <p>In this experiment, feeding reduced-fat distillers grains with solubles (RF-DDGS)as 20% DM of a TMR supplemented with lysine did not negatively influence production parameters related to milk composition or nutritional physiology of the cow. Milk urea nitrogen (MUN) was, however, decreased,and milk protein percentage was increased. Total milk solids werenot influenced by inclusion of RF-DDGS. Additionally, RF-DDGS did cause a decrease in fat-corrected milk (FCM)efficiency as a result of an increase in DMI. When energy-corrected milk (ECM)efficiency was calculated (accounting for fat, protein, and lactose concentration in milk),no difference in feed efficiency resulted(p > 0.05).</p> <p>These data indicate that RF-DDGS can effectively be included in rations of multiparous lactating dairy cows, at least when supplemented with lysine. Additionally, decreased milk urea nitrogen (MUN)and increased milk protein percentage indicate thatdietaryprotein utilization may be improved by including RF-DDGS as a protein source in the ration, presumably because DDGS are generally considered to be a good source of rumen undegradable protein. Taken together, these results indicate that RF-DDGS may be an attractive feed ingredient for inclusion in lactating ruminant diets.</p>
dc.identifier archive/lib.dr.iastate.edu/ans_air/vol663/iss1/25/
dc.identifier.articleid 2265
dc.identifier.contextkey 9913220
dc.identifier.doi https://doi.org/10.31274/ans_air-180814-310
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ans_air/vol663/iss1/25
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/9323
dc.language.iso en
dc.relation.ispartofseries Animal Science Research Reports
dc.relation.ispartofseries ASL R3152
dc.source.bitstream archive/lib.dr.iastate.edu/ans_air/vol663/iss1/25/R3152.pdf|||Fri Jan 14 22:56:28 UTC 2022
dc.subject.disciplines Dairy Science
dc.title Feeding Lactating Holstein Dairy Cows Reduced-Fat Dried Distillers Grains with Solubles: Milk Composition and Feed Efficiency
dc.type article
dc.type.genre dairy
dspace.entity.type Publication
relation.isAuthorOfPublication b448e5d9-35d0-4d63-8db7-7664c2c6270f
relation.isJournalIssueOfPublication d617d232-28f0-4f88-964e-6cae4e0f2321
relation.isSeriesOfPublication 7f3839b7-b833-4418-a6fa-adda2b23950a
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