Simulation studies of nitrogen concentration in the diet of sheep grazing Mitchell and mulga grasslands in western Queensland

Australian Journal of Agricultural Research

Volumn 51, Issue 2, 2000, Pages 163-172

  Hall, W B ^a,b   Rickert, K G ^a   McKeon, G M ^b   Carter, J O ^b  

^a UNIVERSITY OF QUEENSLAND   (Australia)

^b Queensland Dept of Nat Resources ^*  (Australia)

Author keywords

Acacia aneura; Astrebla spp.; Mitchell grass; Modelling; Mulga

Indexed keywords

EID: 0034013686     PISSN: 00049409     EISSN: None     Source Type: Journal    
DOI: 10.1071/AR99026     Document Type: Article

References (40)

1. Anon. (1998) 'Australian commodity statistics: 1998.' (ABARE: Canberra)
2. Arnold GW (1981) Grazing behaviour. In 'Grazing animals'. (Ed. FHW Morley) pp. 79-104. (Elsevier: Amsterdam)
3. Ash AJ, Bellamy JA, Stockwell TGH (1994) State and transition models for rangelands, 4. Application of state and transition models to rangelands in northern Australia. Tropical Grasslands 28(4), 223-228.
4. Ash AJ, Prinsen JH, Myles DJ, Hendricksen RE (1982) Short-term effects of burning native pasture in spring on herbage and animal production in south-east Queensland. Proceedings of the Australian Society of Animal Production 14, 377-380.
5. Beale IF (1975) Forage intake and digestion by sheep in the Mulga Zone of Queensland, Australia. PhD Thesis, Colorado State University, Fort Collins.
6. Black JL, Faichney GJ, Sinclair RE (1982) Role of computer simulation in overcoming limitations to animal production from pastures. In 'Nutritional limits to animal production from pastures'. (Ed. JB Hacker) pp. 473-493. (Commonwealth Agricultural Bureaux: Farnham Royal)
7. Carter J, Flood N, Danaher T, Hugman P, Young R, Duncalfe F, Barber D, Flavel R, Beeston G, Mlodawski G, Hart D, Green D, Richards R, Dudgeon G, Dance R, Brock D, Petty D, et al. (1996) Development of a national drought alert strategic information system. Volume 3: Development of data rasters for model inputs. Final report on QPI 20 to Land and Water Resources Research and Development Corporation.
8. Day KA, McKeon GM, Carter JO (1997) Evaluating the risks of pasture and land degradation in native pastures in Queensland. Final report for the Rural Industries Research and Development Corporation, Project No. DAQ 124A.
9. Day KA, McKeon GM, Orr DM (1993) Comparison of methods for assessing productivity of native pastures in Queensland. In 'Proceedings of the XVII International Grassland Congress'. pp. 784-785. (NZ Grassland Association, Tropical Grassland Society of Australia, NZ Society of Animal Production, Australian Society of Animal Production-Qld Branch, NZ Institute of Agricultural Science)
10. Denham SC, Spreen TH (1986) Introduction to simulation of beef cattle production. In 'Simulation of beef cattle production systems and its use in economic analysis'. (Eds TH Spreen, DH Laughlin) pp. 39-61. (Westview Press: Boulder, CO)
11. Dove H (1996) Constraints to the modelling of diet selection and intake in the grazing ruminant. Australian Journal of Agricultural Research 47, 257-275.
12. Forbes TDA, Hodgson J (1985) Comparative studies of the influence of sward conditions on the ingestive behaviour of cows and sheep. Grass and Forage Science 40, 69-77.
13. Freer M, Moore AD, Donnelly JR (1997) GRAZPLAN: Decision support systems for Australian grazing enterprises - II. The animal biology model for feed intake, production, reproduction and the GrazFeed DSS. Agricultural Systems 54, 77-126.
14. Hendricksen RE, Rickert KG, Ash AJ, McKeon GM (1982) Beef production model. Proceedings of the Australian Society of Animal Production 14, 208-210.
15. Hodgson J (1982) Influence of sward characteristics on diet selection and herbage intake by the grazing animal. In 'Nutritional limits to animal production from pastures'. (Ed. JB Hacker) pp. 153-166. (Commonwealth Agricultural Bureaux: Farnham Royal, UK)
16. Jones P, Burrows WH (1994) State and transition models for rangelands, 13. A state and transition model for the mulga zone of southwest Queensland. Tropical Grasslands 28(4), 279-283.
17. Kenney PA, Black JL (1984) Factors affecting diet selection by sheep. I. Potential intake rate and acceptability of feed. Australian Journal of Agricultural Research 35, 551-563.
18. Ketelaars JJMH (1986) Prediction of feed intake in ruminants. In 'Modelling of extensive livestock production systems'. (Eds N De Riddler, H Van Keulen, NG Seligman, PJH Neate) pp. 108-156. (International Livestock Centre for Africa: Addis Ababa)
19. Littleboy M, McKeon GM (1997) Subroutine GRASP: Grass production model, Appendix 2 for evaluating the risks of pasture and land degradation in native pastures in Queensland. Final report for the Rural Industries Research and Development Corporation, Project No. DAQ 124A.
20. Lorimer MS (1976) Forage selection by sheep grazing Mitchell grass in north-west Queensland. MAgSc Thesis, University of Queensland, Brisbane.
21. McArthur SR, Chamberlain HJ, Phelps DG (1994) State and transition models for rangelands, 12. A state and transition model for the Mitchell grass, bluegrass-browntop and Queensland bluegrass pasture zones of northern Australia. Tropical Grasslands 28(4), 274-278.
22. McKeon GM, Day KA, Howden SM, Mott JJ, Orr DM, Scattini WJ, Weston EJ (1990) Northern Australian savannas: management for pastoral production. Journal of Biogeography 17, 355-372.
23. McKeon GM, Howden SM, Abel NOJ, King JM (1993) Climate change: adapting tropical and subtropical grasslands. In 'Proceedings of the XVII International Grassland Congress'. pp. 1181 -1190. (NZ Grassland Association, Tropical Grassland Society of Australia, NZ Society of Animal Production, Australian Society of Animal Production-Qld Branch, NZ Institute of Agricultural Science)
24. McKeon GM, Rickert KG, Ash AJ, Cooksley DG, Scattini WJ (1982) Pasture production model. Proceedings of the Australian Society of Animal Production 14, 201-204.
25. McKeon GM, Rickert KG, Robbins GB, Scattini WJ, Ivory DA (1980) Prediction of animal performance from simple environmental variables. In 'Fourth Biennial Conference, Simulation Society of Australia'. pp. 9-16. (Simulation Society of Australia)
26. McMeniman NP, Beale IF, Murphy GM (1986a) Nutritional evaluation of south-west Queensland pastures. I The botanical and nutrient content of diets selected by sheep grazing on Mitchell grass and mulga grassland associations. Australian Journal of Agricultural Research 37, 289-302.
27. McMeniman NP, Beale IF, Murphy GM (1986b) Nutritional evaluation of south-west Queensland pastures. II The intake and digestion of organic matter and nitrogen by sheep grazing on Mitchell grass and mulga grassland associations. Australian Journal of Agricultural Research 37, 303-314.
28. Orr DM, Evenson CJ, Jordan DJ, Bowly PS, Lehane KJ, Cowan DC (1988) Sheep productivity in an Astrebla grassland of south-west Queensland. Australian Rangeland Journal 10, 39-47.
29. Orr DM, Holmes WE (1984) Mitchell grasslands. In 'Management of Australia's rangelands'. pp. 241-254. (CSIRO Australia: Melbourne)
30. Perry RA (1970) Arid shrublands and grasslands. In 'Australian grasslands'. (Ed. RM Moore) pp. 246-259. (Australian National University Press: Canberra)
31. Pritchard DA (1988) Some studies on the productivity of high and low wool producing sheep in western Queensland. MSc Thesis, James Cook University, Townsville.
32. Pritchard DA, Connelly PT, Kelly JG, Hopkins PS (1986) Diet selection and wool growth of high and low producing sheep at pasture in north west Queensland. Proceedings of the Australian Society of Animal Production 16, 307-310.
33. Rickert KG, McKeon GM (1982) Soil water balance model: WATSUP. Proceedings of the Australian Society of Animal Production 14, 198-200.
34. Scanlan JC, McKeon GM (1993) Competitive effects of trees on pasture are a function of rainfall distribution and soil depth. In 'Proceedings of the XVII International Grassland Congress'. pp. 2231-2232. (NZ Grassland Association, Tropical Grassland Society of Australia, NZ Society of Animal Production, Australian Society of Animal Production-Qld Branch, NZ Institute of Agricultural Science)
35. Ungar ED, Noy-Meir I (1986) Behavioural aspects of intake at pasture in ruminants. In 'Modelling of extensive livestock production systems'. (Eds N De Riddler, H Van Keulen, NG Seligman, PJH Neate) pp. 80-106. (International Livestock Centre for Africa: Addis Ababa)
36. Watermark Computing (1994) 'PEST: Model-independent parameter estimation. User's manual.' (Watermark Computing)
37. Weston EJ, Harbison J, Leslie JK, Rosenthal KM, Mayer RJ (1981) Assessment of the agricultural and pastoral potential of Queensland. Map No. 3; Native pasture communities. Queensland Department of Primary Industries, Agricultural Branch, Technical Report No. 27, Brisbane.
38. White DH, Nagorcka BN, Birrell HA (1979) Predicting wool growth of sheep under field conditions. In 'Physiological and environmental limitations to wool growth'. (Eds JL Black, PJ Reis) pp. 139-161. (University of New England Publishing Unit: Armidale)
39. Wilson JR (1982) Environmental and nutritional factors affecting herbage quality. In 'Nutritional limits to animal production from pastures'. (Ed. JB Hacker) pp. 111-131. (Commonwealth Agricultural Bureaux: Farnham Royal, UK)
40. Wilson JR, 'tMannetje L (1978) Senescence, digestibility and carbohydrate content of buffel grass and green panic leaves in swards. Australian Journal of Agricultural Research 29, 503-516.