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Recent Publications, Reports and Seminars by Professor R A Leng Endophyte ill thrift is a little known problem in cattle, sheep, goats and alpaca production. Ron came across the problem soon after retirement from the University and is in the process of writing a text book on ill thrift of ruminants at pasture. The paper was presented at a meeting organized by the Meat and Livestock Association in Melbourne 2005. Leng, R.A., 2005. Production Research
Priorities- Endophyte Ill thrift. In Perennial Ryegrass Toxicosis in Australia.
K.F.M. Reed, S.W. Page and I.J. Lean) MEAT AND LIVESTOCK AUSTRALIA LIMITED,
North Sydney, Australia, 2005 [in press]. pp200 As a foundation member of the
University of Tropical Agriculture Foundation [www.utafoundation.org ] Ron has
been associated with the online journal Livestock Research for Rural Development
and assists the President Professor T R Preston in setting editorial policy.
This paper sets out editorial policy to not accept papers dealing with
industrialized animal production on the basis that future fossil fuel supply and
costs suggest such systems are inappropriate for development Leng R A [2004]Requirements for
protein meals for ruminant meat production in developing countries In Protein
sources for the Animal Feed Industry. FAO Animal Production and Health
Proceedings Rome. In 1991 during an assignment in Bangladesh, Ron came across the work of PRISM an NGO that was developing duckweed aquaculture. The ability of aquatic plants to regenerate potable water from sewage and to provide a potential feed for livestock was seen to have enormous potential. Research in the University of Tropical Agriculture, Vietnam developed and Ron was asked to write a book on the potential of Duckweed as a feed for livestock [Duckweed FAO, Rome]. When the largest lake in South America [Lake Maracaibo] suddenly experienced a duckweed bloom that eventually covered 15-20% of the lake’s surface, Ron was one of the scientists called in to attempt to understand the reasons. The report co authored with other members of the University of Tropical Agriculture was subsequently presented to the government of Venezuela. R A Leng, T R Preston and Lylian
Rodríguez The duckweed invasion of Lake Maracaibo: An evaluation of the causes
and proposals for future action. Report to The Government of Venezuela 2004 Future agriculture is likely to have to develop cropping and farming technologies that minimize the inputs of fossil fuels as these become scarcer and more costly. Biological agriculture with emphasis on stimulating the dependency on microbes will increasingly need to become the way of the future. Bill and Rhonda Daly of Milgadara, Young in NSW [trading as Ylad -Living Soils] are proactive in the Biological Farming movement and regularly organize one day seminars covering many aspects associated with sustainable farming. These workshops draw speakers from a wide section of the scientific society and are highly interesting days. Ron has been involved in a number of seminars . The most recent [ Using crop residues efficiently in a fossil fuel hungry world] is presented below. Ulad using crop residues.ppt (1.9MB) - requires MS Powerpoint Ron will present a key note address to an International seminar in Thailand in November 2005,AHAT BSAS [Integrating livestock-crop systems to meet the challenge of globalization]. His paper [Metabolisable protein requirements of ruminants fed roughage based diets] is available below.
MP requirements.doc (350k)
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