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Effect of Feeding Selenium-Fertilized Alfalfa Hay on Performance of Weaned Beef Calves Public Deposited

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  • Selenium (Se) is an essential micronutrient in cattle, and Se-deficiency can affect morbidity and mortality. Calves may have greater Se requirements during periods of stress, such as during the transitional period between weaning and movement to a feedlot. Previously, we showed that feeding Se-fertilized forage increases whole-blood (WB) Se concentrations in mature beef cows. Our current objective was to test whether feeding Se-fertilized forage increases WB-Se concentrations and performance in weaned beef calves. Recently weaned beef calves (n = 60) were blocked by body weight, randomly assigned to 4 groups, and fed an alfalfa hay based diet for 7 wk, which was harvested from fields fertilized with sodium-selenate at a rate of 0, 22.5, 45.0, or 89.9 g Se/ha. Blood samples were collected weekly and analyzed for WB-Se concentrations. Body weight and health status of calves were monitored during the 7-wk feeding trial. Increasing application rates of Se fertilizer resulted in increased alfalfa hay Se content for that cutting of alfalfa (0.07, 0.95, 1.55, 3.26 mg Se/kg dry matter for Se application rates of 0, 22.5, 45.0, or 89.9 g Se/ha, respectively). Feeding Se-fertilized alfalfa hay during the 7-wk preconditioning period increased WB-Se concentrations (P[subscript Linear] < 0.001) and body weights (P[subscript Linear] = 0.002) depending upon the Se-application rate. Based upon our results we suggest that soil-Se fertilization is a potential management tool to improve Se-status and performance in weaned calves in areas with low soil-Se concentrations.
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  • Hall JA, Bobe G, Hunter JK, Vorachek WR, Stewart WC, Vanegas JA, et al. (2013) Effect of Feeding Selenium-Fertilized Alfalfa Hay on Performance of Weaned Beef Calves. PLoS ONE 8(3): e58188. https://doi.org/10.1371/journal.pone.0058188
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  • 8
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  • 3
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  • Funded in part by Animal Health and Disease Project Formula Funds, Oregon State University, Corvallis, Oregon 97331-4802, United States of America(JAH, Principal Investigator). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. Noadditional external funding received for this study
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  • description.provenance : Made available in DSpace on 2013-05-06T16:32:51Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: bb87e2fb4674c76d0d2e9ed07fbb9c86 (MD5) HallJeanAVeterinaryMedicineEffectFeedingSelenium.pdf: 263274 bytes, checksum: a24f840c6cf1bcde915a30b4f8f8855a (MD5) Previous issue date: 2013-03-11
  • description.provenance : Submitted by Deborah Campbell (deborah.campbell@oregonstate.edu) on 2013-05-06T16:31:46Z No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: bb87e2fb4674c76d0d2e9ed07fbb9c86 (MD5) HallJeanAVeterinaryMedicineEffectFeedingSelenium.pdf: 263274 bytes, checksum: a24f840c6cf1bcde915a30b4f8f8855a (MD5)
  • description.provenance : Approved for entry into archive by Deborah Campbell(deborah.campbell@oregonstate.edu) on 2013-05-06T16:32:51Z (GMT) No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: bb87e2fb4674c76d0d2e9ed07fbb9c86 (MD5) HallJeanAVeterinaryMedicineEffectFeedingSelenium.pdf: 263274 bytes, checksum: a24f840c6cf1bcde915a30b4f8f8855a (MD5)

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