Use of supplements and variation in the stocking rate in cow-calf systems on temperate pastures in Chile: a simulation approach

Simple item page
dc.contributor.authorCatrileo, A. R.
dc.contributor.authorToro, P. M.
dc.contributor.authorAguilar, C. D.
dc.contributor.authorVera, R.
dc.date.accessioned2024-01-10T13:09:53Z
dc.date.available2024-01-10T13:09:53Z
dc.date.issued2009
dc.description.abstractA simulation model was developed to evaluate the productive and economic effect of the variation in feed practices and stocking rate of a cow-calf system in Chile. Winter supplementation at grazing, stocking rate and economic aspects of the system were analysed. The supplementation of straw v. pasture hay at two different stocking rates was evaluated in the temperate pasture zone in La Araucania, Chile. Data were simulated using a decision support tool to help analyse the system. Simulations with the model involved 20 replicates of a factorial combination of two stocking rates (1.0 and 1.4 cows/ha) with differences in the initial weight ('light' v. 'heavy' with weights of heifers, primiparous and multiparous cows being 340 v. 380, 400 v. 450 and 440 v. 480 kg, respectively), at the same grazing pressure ( kg liveweight/ha), two winter supplements ( oat straw v. pasture hay) and two levels ( 6 v. 8 kg straw, and 5.1 v. 6.8 pasture hay). The model was validated with data collected from an experiment conducted with permanent pastures and a beef cattle cow-calf system from 1984 to 1989. The results indicate that there was a significant (P<0.01) effect of a cow's weight on the calves at 180 days, and on their reproductive performance, with the heavier cows increasing their calving rate by 20% relative to the lighter group. The stocking rate and the type and amount of supplement, however, did not influence (P>0.05) the weight of female and male calves at the time of sale. Finally, supplementation with pasture hay, as opposed to oat straw, incurred a larger (P<0.01) mean cost at an equivalent level of provision of metabolisable energy. Although difficult to analyse under real conditions, the economic and productive benefits of various feed practices and stocking rates were successfully evaluated in the present study using simulation tools.
dc.description.funderFondo Nacional de Desarrollo Cientifico y Tecnologico-FONDECYT
dc.description.funderAgronomy and Forestry Faculty
dc.fechaingreso.objetodigital2024-05-06
dc.format.extent9 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1071/EA08113
dc.identifier.eissn1836-5787
dc.identifier.issn1836-0939
dc.identifier.urihttps://doi.org/10.1071/EA08113
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/77698
dc.identifier.wosidWOS:000271847000002
dc.information.autorucAgronomía e Ing. Forestal;Aguilar CD;S/I;49021
dc.information.autorucAgronomía e Ing. Forestal;Toro PM;S/I;10601
dc.issue.numero12
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final1067
dc.pagina.inicio1059
dc.publisherCSIRO PUBLISHING
dc.revistaANIMAL PRODUCTION SCIENCE
dc.rightsacceso restringido
dc.subjectbeef cattle
dc.subjectsimulation models
dc.subjectwinter supplementation
dc.subjectPERFORMANCE
dc.subjectMODEL
dc.subjectLACTATION
dc.subject.ods02 Zero Hunger
dc.subject.ods13 Climate Action
dc.subject.odspa02 Hambre cero
dc.subject.odspa13 Acción por el clima
dc.titleUse of supplements and variation in the stocking rate in cow-calf systems on temperate pastures in Chile: a simulation approach
dc.typeartículo
dc.volumen49
sipa.codpersvinculados49021
sipa.codpersvinculados10601
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
2024-05-06. Use of supplements and variation in the stocking rate in cow-calf systems on temperate pastures in Chile - a simulation approach.pdf
Size:
3.25 KB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Artículos de revistas