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dc.contributor.authorMangwe, Mancoba C.en
dc.contributor.authorBryant, Racheal H.en
dc.contributor.authorGregorini, Pabloen
dc.identifier.citationMangwe, M., Bryant, R., & Gregorini, P. (2020). Rumen fermentation and fatty acid composition of milk of mid lactating dairy cows grazing chicory and ryegrass. Animals, 10(1), 169. doi:10.3390/ani10010169en
dc.description.abstractThe goals of the current study were to investigate the effects of including chicory (Cichorium intybus L.) into the traditional feeding regime of ryegrass/white clover (Lolium perenne L./Trifolium repens L.), and time of its allocation on milk production, rumen fermentation, and FA composition of milk and rumen digesta of dairy cows. Nine groups of four cows were allocated one of three replicated feeding regimes: (1) ryegrass/white clover only (RGWC), (2) ryegrass/white clover + morning allocation of chicory (CHAM), and (3) ryegrass/white clover + afternoon allocation of chicory (CHPM). One cow per group had a rumen cannulae fitted. Treatment did not affect total grazing time or estimated dry matter intake, but cows ruminated more when fed RGWC than chicory. Allocating chicory in the afternoon elevated milk production compared with RGWC and CHAM. Milk from cows grazing chicory contained greater concentrations of polyunsaturated FA (PUFA) such as C18:3 c9, 12, 15 and C18:2 c9, 12 than those on RGWC. As with milk, rumen digesta concentration of PUFA increased when cows grazed on chicory rather than RGWC, which corresponded with lower concentrations of intermediate vaccenic and biohydrogenation end-product stearic acid for cows grazing on chicory. Mean ruminal pH was lower for cows offered chicory than those on RGWC, reflecting greater rumen concentrations of volatile fatty acids (VFA) for cows fed chicory. Allocating chicory during the afternoon is a useful strategy that can translate to improved milk production. The lower rumen pH, lower concentration of vaccenic and stearic acids, and elevated concentration of PUFA in the rumen of cows fed chicory suggest reduced biohydrogenation and may explain the elevated concentration of PUFA in the milk of cows fed chicory compared with those fed RGWC.en
dc.relationThe original publication is available from - MDPI -
dc.rights© 2020 by the authorsen
dc.subjectrumen fermentationen
dc.subjectmilk and rumen fatty aciden
dc.subjectmilk productionen
dc.titleRumen fermentation and fatty acid composition of milk of mid lactating dairy cows grazing chicory and ryegrassen
dc.typeJournal Article
lu.contributor.unitLincoln Universityen
lu.contributor.unitFaculty of Agriculture and Life Sciencesen
lu.contributor.unitDepartment of Agricultural Sciencesen
dc.subject.anzsrc070204 Animal Nutritionen
dc.subject.anzsrc070306 Crop and Pasture Nutritionen
dc.subject.anzsrc070202 Animal Growth and Developmenten
dc.subject.anzsrc0502 Environmental Science and Managementen
dc.subject.anzsrc0608 Zoologyen
dc.subject.anzsrc0702 Animal Productionen
pubs.notesArticle number: 169en
pubs.organisational-group/LU/Agriculture and Life Sciences
pubs.organisational-group/LU/Agriculture and Life Sciences/AGSC
pubs.organisational-group/LU/Research Management Office
pubs.organisational-group/LU/Research Management Office/PE20
pubs.organisational-group/LU/Research Management Office/QE18

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