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dc.contributor.authorMosquera-Losada, M. R.
dc.contributor.authorGonzalez-Rodríguez, A.
dc.contributor.authorRigueiro-Rodriguez, A.
dc.date.accessioned2020-09-23T05:19:13Z
dc.date.available2020-09-23T05:19:13Z
dc.date.issued2000-11-01
dc.identifier.citationMosquera-Losada, M. R., Gonzalez-Rodríguez, A., & Rigueiro-Rodriguez, A. (2000). Sward quality affected by different grazing pressures on dairy systems. Journal of Range Management, 53(6), 603-610.
dc.identifier.issn0022-409X
dc.identifier.doi10.2307/4003153
dc.identifier.doi10.2458/azu_jrm_v53i6_mosquera-losada
dc.identifier.urihttp://hdl.handle.net/10150/643813
dc.description.abstractThe objective of the experiment was to examine the effects of different stocking densities (3.7, 4.6, and 5.5 cows ha- l) on tiller density, botanical composition, and chemical (crude protein [CP], acid detergent fiber [ADF], Ca, P, K, and Mg) quality of pasture and the seasonal (before flowering [spring], after flowering [summer], and autumn) distribution of these parameters. Percentages of sown [perennial ryegrass (Lolium perenne L. cv ‘Brigantia’) and white clover (Trifolium repens L. cv ‘Huia’)] and volunteer species were not significantly affected by stocking density, although as stocking density increased, tiller density also increased. This effect was more pronounced for volunteer species than sown species. Density was significantly higher before flowering than after flowering or autumn. Stocking density affected the chemical quality of herbage with ADF, CP, P, K, and Mg higher at high stocking density. The Ca/P relationship was lower at high stocking density, but the K/(Ca+Mg) relationship was not significantly affected by stocking density. Chemical quality of the pasture was higher before flowering than after flowering or autumn. The Ca/P ratio exceeded the upper limit recommended for dairy cows, but no osteomalacia was found in the presen texperiment. Low values of the K/(Ca+Mg) ratio were found in the spring. Therefore, on these pasture types it is advisable to use concentrates high in Mg or Mg supplements in the spring in order to avoid hypomagnesemia.
dc.language.isoen
dc.publisherSociety for Range Management
dc.relation.urlhttps://rangelands.org/
dc.rightsCopyright © Society for Range Management.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectflowering date
dc.subjectTrifolium repens
dc.subjectheat sums
dc.subjectsward
dc.subjectdairy cows
dc.subjectSpain
dc.subjectLolium perenne
dc.subjectsown grasslands
dc.subjectmineral content
dc.subjectprotein content
dc.subjectfiber content
dc.subjectrain
dc.subjectstocking rate
dc.subjectsward destruction
dc.subjectpotassium
dc.subjectphosphorus
dc.subjectmagnesium
dc.subjectcalcium
dc.subjectdietary mineral supplements
dc.subjectrotational grazing
dc.subjecttillering
dc.subjectseasonal variation
dc.subjectbotanical composition
dc.subjectmaturity stage
dc.subjectLolium
dc.subjectstocking rate
dc.subjectTrifolium
dc.titleSward quality affected by different grazing pressures on dairy systems
dc.typetext
dc.typeArticle
dc.identifier.journalJournal of Range Management
dc.description.collectioninformationThe Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information.
dc.eprint.versionFinal published version
dc.description.admin-noteMigrated from OJS platform August 2020
dc.source.volume53
dc.source.issue6
dc.source.beginpage603-610
refterms.dateFOA2020-09-23T05:19:13Z


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