Ingestive behavior of crossbred heifers in four seasons related to the structure of stargrass pasture

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dc.creatorLudmila Lacerda Campana
dc.creatorElisa Cristina Modesto
dc.creatorAna Carolina Carvalho de Barros
dc.creatorPablo Gilliardi Zanella
dc.creatorCarlos Augusto Brandão de Carvalho
dc.creatorSérgio Traballi Camargo Filho
dc.date2015
dc.date.accessioned2026-07-07T03:59:48Z
dc.descriptionThe ingestive behavior of crossbred heifers grazing on stargrass pasture was managed at two levels of light interception and two levels of post-grazing residual height. The experiment was conducted at Pesagro (Seropédica, Rio de Janeiro State) between April 2012 and January 2013. The grazing (GT), rumination (RT) and idling (IT) times were evaluated every 10 minutes throughout a 24-hour period. Forage samples were collected for the analysis of chemical composition and for leaf:stem ratio determination. Dry bulb, wet bulb and black globe temperatures were evaluated every hour along with the relative humidity, during grazing to characterize the environment and calculate the Black Globe Humidity Index (BGHI). The mean grazing time (6 hours) was inversely related to sward height. The rumination time was associated with lignin content, in autumn and spring. The mean idle time (9 hours) was related to the grazing time. Animals became tolerant to climatic variations, as GT, RT and IT showed no temporal variations. On the other hand, the sward structure and its chemical characteristics showed greater influence on the ingestive activities of cattle grazing on pasture.
dc.formatapplication/pdf
dc.identifier1806-2636
dc.identifierhttps://www.redalyc.org/articulo.oa?id=303135329011
dc.identifier.urihttp://hdl.handle.net/123456789/450013
dc.languageen
dc.publisherUniversidade Estadual de Maringá
dc.relationhttp://www.redalyc.org/revista.oa?id=3031
dc.rightsActa Scientiarum. Animal Sciences
dc.sourceActa Scientiarum. Animal Sciences (Brasil) Num.1 Vol.37
dc.subjectAgrociencias
dc.titleIngestive behavior of crossbred heifers in four seasons related to the structure of stargrass pasture
dc.typeartículo científico

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Acta Scientiarum. Animal Sciences - Universidade Estadual de Maringá