Modelling complex sheep systems using AusFarm

Research output: Other contribution to conferencePoster

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Abstract

Simulation modeling can be a valuable method for extrapolating experimental findings to different weather or management conditions, and for evaluating changes to management. However, few models are available which are capable of modeling complex sheep management. This study evaluated the use of the AusFarm® decision support tool to model a split-joined system using different ram breeds, against experimental results from 2006 to 2010, where stocking rates, management dates and the proportion joined to each breed differed between years. Simulated ewe live weights followed the pattern observed (root mean square error 13 kg), and it is concluded that AusFarm has the flexibility to model sheep systems which are commonly used commercially, but which could not previously be modeled.
Original languageEnglish
Pages627-628
Number of pages2
Publication statusPublished - 2013
Event22nd International Grasslands Congress - Sydney, Australia
Duration: 15 Sep 201319 Sep 2013
http://www.internationalgrasslands.org/files/igc/publications/2013/proceedings-22nd-igc.pdf (Conference proceedings)

Conference

Conference22nd International Grasslands Congress
Abbreviated titleRevitalising Grasslands to Sustain our Communities
CountryAustralia
CitySydney
Period15/09/1319/09/13
Internet address

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sheep
breeds
rams
stocking rate
ewes
weather
body weight
methodology

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Robertson, S., & Friend, M. (2013). Modelling complex sheep systems using AusFarm. 627-628. Poster session presented at 22nd International Grasslands Congress, Sydney, Australia.
Robertson, Susan ; Friend, Michael. / Modelling complex sheep systems using AusFarm. Poster session presented at 22nd International Grasslands Congress, Sydney, Australia.2 p.
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Robertson, S & Friend, M 2013, 'Modelling complex sheep systems using AusFarm' 22nd International Grasslands Congress, Sydney, Australia, 15/09/13 - 19/09/13, pp. 627-628.

Modelling complex sheep systems using AusFarm. / Robertson, Susan; Friend, Michael.

2013. 627-628 Poster session presented at 22nd International Grasslands Congress, Sydney, Australia.

Research output: Other contribution to conferencePoster

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AU - Friend, Michael

N1 - Imported on 03 May 2017 - DigiTool details were: 086 FoR could not be migrated (TBA - TBA). publisher = Orange: NSW Department of Primary Industries, 2013. Event dates (773o) = 15-19 September 2013; Parent title (773t) = International Grasslands Congress.

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AB - Simulation modeling can be a valuable method for extrapolating experimental findings to different weather or management conditions, and for evaluating changes to management. However, few models are available which are capable of modeling complex sheep management. This study evaluated the use of the AusFarm® decision support tool to model a split-joined system using different ram breeds, against experimental results from 2006 to 2010, where stocking rates, management dates and the proportion joined to each breed differed between years. Simulated ewe live weights followed the pattern observed (root mean square error 13 kg), and it is concluded that AusFarm has the flexibility to model sheep systems which are commonly used commercially, but which could not previously be modeled.

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Robertson S, Friend M. Modelling complex sheep systems using AusFarm. 2013. Poster session presented at 22nd International Grasslands Congress, Sydney, Australia.