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dc.contributor.advisorMuhlbach, Paulo Roberto Frenzelpt_BR
dc.contributor.authorCarvalho, Nelcy Madruga dept_BR
dc.date.accessioned2007-06-06T17:19:21Zpt_BR
dc.date.issued2001pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/1960pt_BR
dc.description.abstractSoybeans were roasted in an experimental roaster during 2 or 3 minutes either at 380 or 490 ºC air temperature and kept or not for 30 minutes under steeping. The heat treatment effects on soybeans were evaluated in a first trial through two different procedures: a) after 16 hours of an “in situ” ruminal incubation period, all heat treated soybeans showed an increased (P<0,05) rumen undegraded protein (RUP) content in comparison to raw soybeans; b) a pepsin/pancreatin “in vitro” procedure showed that roasting at 380 ºC, during 2 minutes, with steeping, or at 380 ºC , during 3 minutes without steeping, did not affect the “in vitro” enzymatic intestinal digestibility of soybeans (P>0,05). In a second trial, soybeans roasted at 380 ºC, during 2 minutes and kept under steeping were included in isonitrogenous and isocaloric lactating dairy cows rations and evaluated in comparison to raw soybeans, with two other protein sources as references. There were no differences (P>0,05) between the roasted and raw soybeans diets related either to dry matter or crude protein intakes, milk yield and composition and plasma urea nitrogen (PUN) and milk urea nitrogen (MUN) concentrations, but roasted soybeans yielded significantly (P<0,05) more milk per kg of dry matter or crude protein intake than raw soybeans.en
dc.format.mimetypeapplication/pdf
dc.language.isoporpt_BR
dc.rightsOpen Accessen
dc.subjectVaca leiteira : Lactacao : Arracoamentopt_BR
dc.subjectGrao de soja tostadopt_BR
dc.subjectGrao de soja crupt_BR
dc.subjectMelhoramento genetico animalpt_BR
dc.titleUtilização do grão tostado de soja (Glicine max (L) Merril) na alimentação de vacas em lactaçãopt_BR
dc.title.alternativeRoasted soybeans (glycine max. (l) merril) for lactating dairy cows en
dc.typeTesept_BR
dc.identifier.nrb000312905pt_BR
dc.degree.grantorUniversidade Federal do Rio Grande do Sulpt_BR
dc.degree.departmentFaculdade de Agronomiapt_BR
dc.degree.programPrograma de Pós-Graduação em Zootecniapt_BR
dc.degree.localPorto Alegre, BR-RSpt_BR
dc.degree.date2001pt_BR
dc.degree.leveldoutoradopt_BR


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