Assessment of management options for Chilean needle grass in sheep-grazing systems

2012 ◽  
Vol 69 (1) ◽  
pp. 119-128 ◽  
Author(s):  
C. J. Grech ◽  
D. A. McLaren ◽  
J. Lowien ◽  
L. McWhirter ◽  
K. L. Butler ◽  
...  
Keyword(s):  
Sheep Grazing ◽  
Management Options ◽  
Grazing Systems

Dietary preferences of domestic ruminants

1997 ◽  
Vol 20 ◽  
pp. 96-97 ◽  
Author(s):  
S. M. Rutter ◽  
P. D. Penning ◽  
A. J. Parsons ◽  
A. Harvey ◽  
R. J. Orr
Keyword(s):  
Plant Species ◽  
Perennial Ryegrass ◽  
Animal Species ◽  
Sheep Grazing ◽  
Dietary Preference ◽  
Dietary Preferences ◽  
Complex Interactions ◽  
Domestic Ruminants ◽  
Grazing Systems ◽  
Sustainable Grazing

To develop sustainable grazing systems, an understanding of the complex interactions between competing plant species and grazing herbivores is needed. An understanding of dietary preference is a prerequisite to predicting how much and from which plant species animals select. This work initially concentrated on dietary preferences of sheep grazing perennial ryegrass and white clover swards and was then extended to other animal species to test the generality of our findings.

Annual methane budgets of sheep grazing systems were regulated by grazing intensities in the temperate continental steppe: A two-year case study

2018 ◽  
Vol 174 ◽  
pp. 66-75 ◽  
Author(s):  
Lei Ma ◽  
Mengying Zhong ◽  
Yuhao Zhu ◽  
Helong Yang ◽  
Douglas A. Johnson ◽  
...  
Keyword(s):  
Sheep Grazing ◽  
Grazing Intensities ◽  
Grazing Systems

Mass to height relationships in annual pastures and prediction of sheep growth rates

2014 ◽  
Vol 54 (9) ◽  
pp. 1305
Author(s):  
S. M. Robertson
Keyword(s):  
Feed Intake ◽  
Dry Matter ◽  
Dry Matter Accumulation ◽  
Sheep Grazing ◽  
Software Model ◽  
Low Mass ◽  
Grazing Systems ◽  
Sheep Production ◽  
Relationship Of ◽  
The Relationship

The relationship between pasture height and mass influences the availability of pasture for grazing, and is important for predicting intake of pasture and liveweight change by sheep. The relationship between pasture mass and structure and sheep production is poorly defined for low-mass, clumpy pastures in low-rainfall regions. Between 2001 and 2004, 480 quadrats of pastures were measured in 23 paddocks throughout the Victorian Mallee. Pasture height was related to live mass for medic (linear; r2 = 0.70; P < 0.001) and grassy medic (asymptotic; r2 = 0.64; P < 0.001) pastures, and prediction of grassy medic pasture height was improved by inclusion of proportion live groundcover. During 2004, pasture dry matter accumulation and liveweight changes in sheep grazing annual pastures were measured and compared with predicted outputs from GrazFeed, a software model used to estimate feed intake and liveweight change in sheep. Improved predictions of liveweight gain in grazing sheep were obtained using measured height rather than the GrazFeed default height. The results show that the height to mass relationship of annual pastures in the Victorian Mallee differs between pasture types, between years, and may differ from other published relationships. This study provides information that may assist in the development of models of grazing systems.

Using grazing systems modelling to assess economic, production and environmental risks to aid in selecting appropriate stocking rates

2006 ◽  
Vol 46 (7) ◽  
pp. 841 ◽  
Author(s):  
D. J. Alcock
Keyword(s):  
Environmental Risks ◽  
Potential Outcomes ◽  
Management Options ◽  
Economic Production ◽  
Grazing Systems ◽  
Systems Modelling ◽  
Systems Models ◽  
Farm Sustainability ◽  
The Impact ◽  
Stocking Rates

Results of contemporary farm benchmarking are often used as the grounds for recommending wholesale change in farm management while often paying little heed to the associated risks involved. The current push to increase pasture utilisation rates through increased stocking rates is an example of generalised recommendations for which there is limited supporting data. Grazing systems models provide objective tools to help put the potential outcomes of various management options into context. They provide a framework to evaluate the impact of management options before they are implemented and can provide a fuller representation of the risks involved. This may help to avoid costly mistakes in terms of time, money and farm sustainability.

Using dual-purpose crops in sheep-grazing systems

2014 ◽  
Vol 94 (7) ◽  
pp. 1276-1283 ◽  
Author(s):  
Hugh Dove ◽  
John Kirkegaard
Keyword(s):  
Sheep Grazing ◽  
Dual Purpose ◽  
Grazing Systems

Methods for exploring management options to reduce greenhouse gas emissions from tropical grazing systems

1994 ◽  
Vol 27 (1) ◽  
pp. 49-70 ◽  
Author(s):  
S. Mark Howden ◽  
David H. White ◽  
Greg M. Mckeon ◽  
Joe C. Scanlan ◽  
John O. Carter
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Management Options ◽  
Gas Emissions ◽  
Grazing Systems
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