Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/28781
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dc.contributor.authorCasarotto, L Ten
dc.contributor.authorLaporta, Jen
dc.contributor.authorFerreira, Ken
dc.contributor.authorDavidson, B Den
dc.contributor.authorMoy, Ken
dc.contributor.authorAlmeida, A Ken
dc.contributor.authorChapman, J Den
dc.contributor.authorMclean, D Jen
dc.contributor.authorKirk, D Jen
dc.contributor.authorBarbu, N Ien
dc.contributor.authorOuellet, Ven
dc.contributor.authorDahl, G Een
dc.date.accessioned2020-05-25T06:05:35Z-
dc.date.available2020-05-25T06:05:35Z-
dc.date.issued2020-09-
dc.identifier.citationAnimal Feed Science and Technology, v.267, p. 1-9en
dc.identifier.issn1873-2216en
dc.identifier.issn0377-8401en
dc.identifier.urihttps://hdl.handle.net/1959.11/28781-
dc.description.abstractIn this study we evaluated the effect of feeding an immune modulatory feed additive (OmniGen-AF®; OMN) during the dry period through early lactation on postpartum health, subsequent lactational and reproductive performance of multiparous Holstein cows. We hypothesized that feeding OMN beginning in the dry period and through 150 days in milk (DIM) would improve milk yield and reproductive performance as a result of improved immune response. To test our hypothesis, 1,392 multiparous pregnant Holstein cows of a commercial dairy herd were enrolled and randomly assigned at dry-off (47.6 ± 9.4 d before calving) to OMN (n = 706) or control (CON, n = 686) treatments. Both OMN and CON (placebo) supplements were fed once per day at a rate of 56 g/d per head from dry-off through 150 DIM. Cows were milked three times a day and daily milk yield was measured once per week, starting at the second week of lactation through 140 days in milk. Postpartum health disorders were monitored daily throughout the experiment. Cows were bred following a double OvSynch protocol after a 77-d voluntary waiting period (VWP). Final pregnancy status was assessed after supplementation ended at 230 DIM. Our results indicated that cows supplemented with OMN produced more milk than CON (40.8 kg/d vs. 40.1 kg/d; <i>P</i> < 0.01) during the first 140 d of lactation. Once they entered lactation, cows supplemented with OMN tended (<i>P</i> < 0.10) to have a reduced incidence of mastitis, retained placenta, displaced abomasum (<i>P</i> < 0.11) and reduced number of days spent in the hospital pen relative to CON. OmniGen feeding was also associated with a 10-d reduction in days open (<i>P</i> < 0.05) compared to CON. However, pregnancy rate at first, second and until ∼230 DIM did not differ between treatments. In conclusion, supplementing an immunomodulatory feed additive to dry and early lactation dairy cows was associated with improved milk yield, a tendency to reduce transition cow disorders and reduced number of days open.en
dc.languageenen
dc.publisherElsevier BVen
dc.relation.ispartofAnimal Feed Science and Technologyen
dc.relation.isversionof114527en
dc.titleEffect of feeding an immune modulator to multiparous Holstein cows during the dry period and early lactation on health, milk and reproductive performanceen
dc.typeJournal Articleen
dc.identifier.doi10.1016/j.anifeedsci.2020.114527en
local.contributor.firstnameL Ten
local.contributor.firstnameJen
local.contributor.firstnameKen
local.contributor.firstnameB Den
local.contributor.firstnameKen
local.contributor.firstnameA Ken
local.contributor.firstnameJ Den
local.contributor.firstnameD Jen
local.contributor.firstnameD Jen
local.contributor.firstnameN Ien
local.contributor.firstnameVen
local.contributor.firstnameG Een
local.subject.for2008070299 Animal Production not elsewhere classifieden
local.subject.seo2008830310 Sheep - Meaten
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailadealme2@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.publisher.placeNetherlandsen
local.format.startpage1en
local.format.endpage9en
local.identifier.scopusid85085884754en
local.peerreviewedYesen
local.identifier.volume267en
local.access.fulltextYesen
local.contributor.lastnameCasarottoen
local.contributor.lastnameLaportaen
local.contributor.lastnameFerreiraen
local.contributor.lastnameDavidsonen
local.contributor.lastnameMoyen
local.contributor.lastnameAlmeidaen
local.contributor.lastnameChapmanen
local.contributor.lastnameMcleanen
local.contributor.lastnameKirken
local.contributor.lastnameBarbuen
local.contributor.lastnameOuelleten
local.contributor.lastnameDahlen
dc.identifier.staffune-id:adealme2en
local.profile.orcid0000-0003-3065-0701en
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local.identifier.unepublicationidune:1959.11/28781en
local.date.onlineversion2020-05-12-
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleEffect of feeding an immune modulator to multiparous Holstein cows during the dry period and early lactation on health, milk and reproductive performanceen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorCasarotto, L Ten
local.search.authorLaporta, Jen
local.search.authorFerreira, Ken
local.search.authorDavidson, B Den
local.search.authorMoy, Ken
local.search.authorAlmeida, A Ken
local.search.authorChapman, J Den
local.search.authorMclean, D Jen
local.search.authorKirk, D Jen
local.search.authorBarbu, N Ien
local.search.authorOuellet, Ven
local.search.authorDahl, G Een
local.open.fileurlhttps://rune.une.edu.au/web/retrieve/93468e65-2e6b-4ed0-811f-1cd12ba70ad2en
local.open.fileurlhttps://rune.une.edu.au/web/retrieve/dc49f993-0553-449e-aaf2-9f080553da6aen
local.uneassociationNoen
local.atsiresearchNoen
local.sensitive.culturalNoen
local.year.available2020-
local.year.published2020-
local.fileurl.openhttps://rune.une.edu.au/web/retrieve/dc49f993-0553-449e-aaf2-9f080553da6aen
local.fileurl.openhttps://rune.une.edu.au/web/retrieve/93468e65-2e6b-4ed0-811f-1cd12ba70ad2en
local.fileurl.closedpublishedhttps://rune.une.edu.au/web/retrieve/dc49f993-0553-449e-aaf2-9f080553da6aen
local.subject.for2020300303 Animal nutritionen
local.subject.seo2020100412 Sheep for meaten
dc.notification.token302cb25e-7a75-4f0f-8f59-b55083bbfc23en
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School of Environmental and Rural Science
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