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dc.contributor.authorJohnsen, Julie Føske
dc.contributor.authorViljugrein, Hildegunn
dc.contributor.authorBøe, Knut Egil
dc.contributor.authorGulliksen, Stine Margrethe
dc.contributor.authorBeaver, Annabelle
dc.contributor.authorGrøndahl, Ann Margaret
dc.contributor.authorSivertsen, Tore
dc.contributor.authorMejdell, Cecilie Marie
dc.date.accessioned2019-06-25T09:00:07Z
dc.date.available2019-06-25T09:00:07Z
dc.date.created2019-02-12T12:20:30Z
dc.date.issued2019
dc.identifier.citationActa Veterinaria Scandinavica. 2019, 61 7-?.nb_NO
dc.identifier.issn1751-0147
dc.identifier.urihttp://hdl.handle.net/11250/2602006
dc.description.abstractAbstract Background: For suckling dairy calves, different management routines to ensure sufficient colostrum intake are applied: visual assessment, hand feeding supplemental colostrum or assistance. However, knowledge on the efficacy of these methods to prevent failure of passive transfer [FPT: serum immunoglobulin (IgG) < 10 g/L] is lacking. Our objectives were to explore FPT prevalence in suckling dairy calves and associations with common management routines to ensure colostrum intake. From 20 organic herds, 156 calf blood samples (mean ± SD; 7.8 ± 1.24 per herd) and 141 colostrum samples from the dams were analysed. All calves suckled the dam. Factors known to affect serum and colostrum IgG were evaluated, including the method applied by the producer to ensure calf colostrum intake and whether it deviated from routine practice for any reason. Results: The prevalence of FPT was 31%. Mean serum and colostrum IgG (± SD) were 16.0 ± 10.0 g/L and 39.4 ± 26.4 g/L, respectively. Only colostrum IgG was found to have a statistically significant influence on the prevalence of FPT. Variation in serum IgG was also explained mainly by colostrum IgG. Of calves receiving colostrum according to farm routine, calves receiving supplemental colostrum with a bottle had lower serum IgG levels than did calves receiving no additional colostrum. However, no within-herd effect was found. With a high between-herd variation, colostrum IgG ranged from 2 to 135 g/L, and only 23% of the samples had a IgG content > 50 g/L. Colostrum IgG was significantly higher in samples collected during spring, compared to samples collected during winter, and lower in 2nd parity cows. Conclusions: The results indicate that for calves capable of finding the udder and suckling independently, there is no direct benefit of routinely hand feeding colostrum although herd level factors (e.g. feeding, management etc.) may play an important role. FPT prevalence in this study was high, and comparable to that of calves in conventional herds, separating cow and calf at birth. Still, the findings of a high FPT prevalence and inferior colostrum quality indicates a need for improved awareness among dairy producers practicing cow-calf suckling.nb_NO
dc.description.abstractA cross-sectional study of suckling calves' passive immunity and associations with management routines to ensure colostrum intake on organic dairy farmsnb_NO
dc.language.isoengnb_NO
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.no*
dc.titleA cross-sectional study of suckling calves' passive immunity and associations with management routines to ensure colostrum intake on organic dairy farmsnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber7-?nb_NO
dc.source.volume61nb_NO
dc.source.journalActa Veterinaria Scandinavicanb_NO
dc.identifier.doi10.1186/s13028-019-0442-8
dc.identifier.cristin1676371
dc.relation.projectNorges forskningsråd: 268023nb_NO
cristin.unitcode192,10,1,0
cristin.unitcode192,16,3,0
cristin.unitnameInstitutt for husdyr- og akvakulturvitenskap
cristin.unitnameInstitutt for produksjonsdyrmedisin
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
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