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dc.contributor.authorVance, E.R.*
dc.contributor.authorFerris, C.P.*
dc.contributor.authorElliott, C.*
dc.contributor.authorKilpatrick, D.J.*
dc.date.accessioned2013-01-11T15:22:49Z
dc.date.available2013-01-11T15:22:49Z
dc.date.issued2012-12
dc.identifier.citationA comparison of the feeding and grazing behaviour of primiparous Holstein-Friesian and Jersey × Holstein-Friesian dairy cows. E.R. Vance, C.P. Ferris, C.T. Elliott and D.J. Kilpatrick. Irish Journal of Agricultural and Food Research, 51: 45–61, 2012en_GB
dc.identifier.issn0791-6833
dc.identifier.urihttp://hdl.handle.net/11019/322
dc.identifier.urihttp://www.teagasc.ie/research/journalarchives/vol51no1.asp
dc.descriptionPeer-reviewed articleen_GB
dc.description.abstractFood intake and feeding behaviour of Holstein-Friesian (HF) and Jersey × Holstein- Friesian (J × HF) dairy cows (14 primiparous cows of each genotype) were measured during a 54-day confinement period [cows offered a complete diet comprising conserved forage and concentrates; 66:34 dry matter (DM) basis], while herbage intakes and grazing behaviour were measured on three occasions during a 96-day grazing period. Throughout the experiment HF cows had a higher milk yield than J × HF cows (P < 0.05), while fat + protein yield was unaffected by genotype. During the confinement period HF cows had a higher food intake than the J × HF cows (P < 0.01), although DM intake/kg metabolic live weight (live weight0.75) was unaffected by genotype. With the exception of the number of ruminating bouts/day (P < 0.05), and idling time/day (P < 0.05), both of which were highest with the J × HF cows, genotype had no significant effect on any of the feeding behaviours examined during the confinement period. Herbage intake did not differ between genotypes during the grazing period, although when expressed on a kg live weight0.75 basis, intakes were highest with the J × HF cows (P < 0.05). While the smaller J × HF cows had fewer grazing bouts per day (P < 0.01), the mean duration of each grazing bout was longer (P < 0.001), resulting in a longer total grazing time (P < 0.05) and a greater number of grazing bites each day (P < 0.01). The smaller crossbred cows had to ‘work harder’ during the grazing period to achieve the same intakes as the larger HF cows.en_GB
dc.description.sponsorshipDepartment of Agriculture and Rural Development for Northern Ireland (DARD); Agri-Searchen_GB
dc.language.isoenen_GB
dc.publisherTeagascen_GB
dc.relation.ispartofseriesIrish Journal of Agricultural and Food Research;vol 51
dc.subjectCrossbreedingen_GB
dc.subjectFeeding behaviouren_GB
dc.subjectFood intakeen_GB
dc.subjectGrazing behaviouren_GB
dc.titleA comparison of the feeding and grazing behaviour of primiparous Holstein-Friesian and Jersey × Holstein-Friesian dairy cowsen_GB
dc.typeArticleen_GB
refterms.dateFOA2018-01-12T07:44:31Z


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