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dc.contributor.authorGibson, Carol J.
dc.date.accessioned2011-08-24T04:16:23Z
dc.date.available2011-08-24T04:16:23Z
dc.date.issued1992
dc.identifier.urihttps://hdl.handle.net/10182/3810
dc.description.abstractShort-term intake rate measurements were performed on four 20 month old Friesian heifers with mean live weight of 344 kg. Treatments were forages of two qualities; ryegrass straw (low), and oaten hay (high), and four particle lengths (5, 10,20 and 40 cm). The intake rates of each forage type offered singly (S-straw and S-oat) and in all possible paired combinations of particle lengths (40-20,40-10,40-5,20-10,20-5,10-5) for both forage types (P-straw, P-oat) were measured over 3-5 minute periods. Feed quality had a highly significant effect (P<0.01) on intake rate. Mean intake rates were 36 and 69 g/min for S-straw and S-oat respectively. There was no significant difference in intake rate between the particle sizes in either the S-straw or S-oat experiments. When the between-animal variation was removed the particle length of oaten hay had a significant effect on intake rate. The change in intake rate between 5 and 20, and 20 and 40 cm was significant for both S-straw and S-oat. The particle lengths giving the faster intake rates in the single offerings experiments were generally consumed in higher proportions in the paired feeding trials. Intake rates in the P-straw and P-oat experiments reflected the intake rates associated with the two feeds induded in the combination, as indicated by the S-straw and S-oat experiments.en
dc.language.isoenen
dc.publisherLincoln Universityen
dc.rights.urihttps://researcharchive.lincoln.ac.nz/page/rights
dc.subjectryegrass strawen
dc.subjectoaten hayen
dc.subjectintake rateen
dc.subjectpaired combinationsen
dc.subjectparticle lengthen
dc.subjectheifersen
dc.titleThe effect of feed quality and particle length on the short-term intake rate of Friesian heifersen
dc.typeDissertationen
thesis.degree.grantorLincoln Universityen
thesis.degree.levelOtheren
thesis.degree.nameBachelor of Agricultural Scienceen
lu.thesis.supervisorHughes, Terry
lu.contributor.unitDepartment of Agricultural Sciencesen
dc.rights.accessRightsDigital dissertation can be viewed by current staff and students of Lincoln University only.en
dc.subject.anzsrc070204 Animal Nutritionen


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