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dc.contributor.advisorFesta-Bianchet, Marcofr
dc.contributor.advisorDe Passille, Anne Mariefr
dc.contributor.authorGaboury, Chantal Lindafr
dc.date.accessioned2014-05-16T15:27:07Z
dc.date.available2014-05-16T15:27:07Z
dc.date.created1999fr
dc.date.issued1999fr
dc.identifier.isbn0612672727fr
dc.identifier.urihttp://savoirs.usherbrooke.ca/handle/11143/4463
dc.description.abstractDuring a nursing, dairy calves switch from one test to another. It has been suggested that teat-switching occurs when there is a decrease in milk-flow rate from the udder. I tested this hypothesis using a feeding apparatus equipped with 2 artificial teats. When milk flowed at a constant, extremely slow flow rate (0.041/min), calves teat-switched 4 times as often compared to the control (baseline : once/min at 0.661/min). When milk flow was suddenly reduced from baseline to extremely slow or nil , calves responded by switching teats 8-9 times as frequently compared to when milk was not reduced. An additional finding was that, regardless of the treatment, calves butted at a much higher frequency during the first 30 seconds of the meal (ex: baseline : 6 teat-switches/min). The results suggest that calves are sensitive to changes in milk-flow rate and that they respond to a constant or sudden decrease in flow rate by switching teats.fr
dc.language.isoengfr
dc.publisherUniversité de Sherbrookefr
dc.rights© Chantal Linda Gabouryfr
dc.titleFacteurs motivant le changement de tétines chez le veau (Bos taurus)fr
dc.typeMémoirefr
tme.degree.disciplineBiologiefr
tme.degree.grantorFaculté des sciencesfr
tme.degree.levelMaîtrisefr
tme.degree.nameM. Sc.fr


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