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dc.contributor.authorCoutts, Emma J.
dc.date.accessioned2013-12-16T01:33:10Z
dc.date.available2013-12-16T01:33:10Z
dc.date.issued2013
dc.identifier.urihttps://hdl.handle.net/10182/5748
dc.description.abstractAnimal production from lucerne has proved superior to other pastures in dryland situations, however there is interest in lucerne/grass mixes an as alternative to lucerne monocultures. A farmlet study was set up with lucerne monocultures, lucerne/cocksfoot and lucerne/brome mixes. Annual liveweight production was 865 kg/ha for lucerne monocultures and lucerne/cocksfoot, compared with 746 kg/ha for lucerne/brome. During spring, 78% of total liveweight production was from lambs that maintained growth rates of ∼300 g/head/d on all pastures. Accumulated dry matter yields were ∼12 t/ha for all pastures. All pastures used 612 mm of water at an efficiency of 22 kg DM/ha/mm. Temperature did not influence dry matter yield across pastures, all produced 5.5 kg DM/ha/°Cd. Botanical composition was similar for all pastures, but livestock on lucerne monocultures consumed 100 kg DM/ha more weeds than lucerne/grass. Stock grazing lucerne/brome actively selected for legumes, and against brome and dead material, resulting in a decline in pasture quality. Differences in liveweight gain were explained by different stocking rates for each treatment, not by quantity or quality of herbage. Utilizing a ‘leader follower’ system of ewes and lambs followed by cattle could aid to maintain the herbage quality of lucerne/grass mixes by avoiding a built up of reproductive and dead material.en
dc.language.isoenen
dc.publisherLincoln Universityen
dc.subjectbotanical compositionen
dc.subjectbromeen
dc.subjectBromus willdenowiien
dc.subjectalfalfaen
dc.subjectcocksfooten
dc.subjectDactylis glomerataen
dc.subjectdrylanden
dc.subjectgrazing bromeen
dc.subjectMedicago sativaen
dc.subjectprairie grassen
dc.subjectwater useen
dc.titleAnimal liveweight gain from lucerne and lucerne/grass mixesen
dc.typeDissertationen
thesis.degree.nameBachelor of Agricultural Scienceen
lu.thesis.supervisorMoot, Derrick J.
lu.contributor.unitDepartment of Agricultural Sciencesen
dc.subject.anzsrc070202 Animal Growth and Developmenten
dc.subject.anzsrc070304 Crop and Pasture Biomass and Bioproductsen
dc.subject.anzsrc070303 Crop and Pasture Biochemistry and Physiologyen


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