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dc.contributor.authorDi Marco, O. N.
dc.contributor.authorAello, M. S.
dc.date.accessioned2020-09-23T05:54:50Z
dc.date.available2020-09-23T05:54:50Z
dc.date.issued1998-01-01
dc.identifier.citationDi Marco, O. N., & Aello, M. S. (1998). Energy cost of cattle walking on the level and on a gradient. Journal of Range Management, 51(1), 9-13.
dc.identifier.issn0022-409X
dc.identifier.doi10.2307/4003556
dc.identifier.urihttp://hdl.handle.net/10150/644094
dc.description.abstractThe effect of walking on cattle energy expenditure was assessed by monitoring the CO2 production of cattle with the 14C-entry rate technique. Seven Angus steers (298 +/- 38 kg BW) were peritoneally infused with a solution of NaH14CO3 for 72 hours using portable peristaltic pumps. The steers were forced to walk after 24 hours of infusion, on 2 consecutive days. On the first day, walking was at a constant speed of 2 km.hour-1, divided in 4 periods of 0.5 hours (1 km), first on the level ground, second and third ascending and descending a 6% grade, and finally on the level surface on the way back to corrals. On the second day, cattle walked 1 km at 1 km hour-1, and thereafter walked 4 km at 4 km hour-1 on the level. Saliva samples were collected for periods of 0.5 hours before and during different periods of walking and at rest at 2 and 4 hours after the activity. Concentration and specific activity of CO2 were measured in saliva samples to estimate the rate of CO2 production [ml.hour-1.(BW0.75)-1] as the ratio between the rate of infusion (microCi.hour-1) and the specific activity of CO2 (microCi.liter-1 of CO2). The production of CO2 was converted to heat production using an energy equivalent of 5.26 kcal.liter-1. Average energy expenditure (EE) in corrals in both days before the activity was 82.6 +/- 3.1 kcal hour-1.100 kg BW-1 [650 ml CO2.hour-1.(BW0.75)-1]. The cost of walking on the level surface and on the 6% grade was 9.0 +/- 1.14 and 16.4 +/- 2.18 kcal.km-1.100 BW-1, respectively. There was a small nonsignificant residual effect of walking that disappeared a few hours after exercise. It was concluded that the cost of walking can only have a minor effect on the energy requirement of grazing cattle.
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.subjectenergy expenditure
dc.subjectenergy cost of activities
dc.subjectenergy cost of maintenance
dc.subjectresidual effects
dc.subjectlocomotion
dc.subjectcarbon dioxide
dc.subjectsteers
dc.subjectArgentina
dc.subjectbeef cattle
dc.titleEnergy cost of cattle walking on the level and on a gradient
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.volume51
dc.source.issue1
dc.source.beginpage9-13
refterms.dateFOA2020-09-23T05:54:50Z


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