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dc.contributor.authorHoglund Jen
dc.contributor.authorHessle Aen
dc.contributor.authorZaralis Ken
dc.contributor.authorArvidsson-Segerkvist Ken
dc.contributor.authorAthanasiadou Sen
dc.date.accessioned2018-02-07T16:57:40Z
dc.date.available2018-02-07T16:57:40Z
dc.date.issued2017
dc.identifier.citation249en
dc.identifier.issn0304-4017
dc.identifier.urihttps://doi.org/10.1016/j.vetpar.2017.11.011
dc.identifier.urihttp://hdl.handle.net/11262/11389
dc.description.abstractBody weight gain (BWG) and gastrointestinal nematode challenge (GIN) were investigated in two genetically diverse groups of cattle. Thirty-two dairy calves (D = Swedish Red/Holstein) and 31 dairy × beef crosses (C = Swedish Red/Holstein × Charolais) pairwise matched by dam breed and birth dates, were monitored for ≈20 weeks on a pasture grazed by cattle in the previous year. At turn-out, animals (between 6 and 12 months age) from each genotype were either infected with 5000 third stage (L3) Ostertagia ostertagi (50%) and Cooperia oncophora (50%) larvae (H, high-exposure); or treated monthly with 0.5 mg ivermectin (Noromectin®, Pour-on) per kg bodyweight to remove worms ingested (L, low-exposure). Animals were weighed every fortnight and individual BWG was calculated. Faecal and blood samples were collected every four weeks throughout the experiment for nematode faecal egg counts (FEC) and larvae cultures and serum pepsinogen concentrations (SPC), respectively. Nematode eggs were observed 29 days post turn-out in both H groups. FEC peaked to around 200 eggs per gram (epg) on days 58 and 85 respectively in both H groups. FEC were also observed in the L groups at the same time, but mean epg remained very low (<20 epg) and constituted exclusively of C. oncophora. Although, there was no significant difference in SPC values in animals of the different genotypes, ten animals of CH showed a SPC >3.5 IU tyrosine whereas only six DH animals reached similar pepsinogen levels. The level of infection (H and L) significantly affected BWG in both genotypes. Even though there was no statistically significant genotype (C or D) × treatment (H or L) interaction, there was a larger difference in body weight of H and L in C (37 kg) compared to D (17 kg) genotypes at the end of the experiment. Our data collectively support the view crossbred (C) animals experience the impact of gastrointestinal parasitism more severely compared to pure dairy (D) first season grazers. The mechanisms that underpin this remains speculative.en
dc.description.sponsorshipProject PrOPara: ERA-Net CORE Organic Plus Funding Bodies partners of the European Union’s FP7 research and innovation programme under the grant agreement No. 618107.en
dc.language.isoenen
dc.publisherElsevieren
dc.relation.isformatof14770en
dc.relation.ispartofVeterinary Parasitologyen
dc.rightsCopyright © 2017 Elsevier B.V. All rights reserved. This manuscript version is made available after the end of the 12 month embargo period under the CC-BY-NC-ND 4.0 license
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectOstertagia ostertagien
dc.subjectCooperia oncophoraen
dc.subjectCattle geneticsen
dc.subjectParasite resistanceen
dc.subjectParasite resilienceen
dc.subjectNematodesen
dc.subjectGrowth performanceen
dc.subjectDairyen
dc.subjectBeef cattleen
dc.subjectCrossbreedingen
dc.titleWeight gain and resistance to gastrointestinal nematode infections in two genetically diverse groups of cattleen
dc.typeArticleen
dc.description.versionAccepted manuscript
dc.extent.pageNumbers88-91en
rioxxterms.publicationdate2017-11-24
rioxxterms.typeJournal Article/Reviewen
dcterms.dateAccepted2017-11-23
refterms.accessExceptionNAen
refterms.dateDeposit2018-02-07
refterms.dateEmbargoEnd2018-11-24
refterms.dateFreeToDownload2018-11-24
refterms.dateFreeToRead2018-11-24
refterms.dateToSearch2018-11-24
refterms.depositExceptionNAen
refterms.panelUnspecifieden
refterms.technicalExceptionNAen
refterms.versionAMen


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Copyright © 2017 Elsevier B.V. All rights reserved.
This manuscript version is made available after the end of the 12 month embargo period under the CC-BY-NC-ND 4.0 license
Except where otherwise noted, this item's license is described as Copyright © 2017 Elsevier B.V. All rights reserved. This manuscript version is made available after the end of the 12 month embargo period under the CC-BY-NC-ND 4.0 license