tailieunhanh - Conversion to Organic Milk Production: the change process and farmers' information needs

Many animals respond to a hot environment by resorting to an increased respiration rate and in some cases to open-mouth panting. Respiration rates in the camel increase very little with increase in ambient heat load and the respiratory route, probably, is a very minor source of water loss. In addition, camels are able to exhale unsaturated air under some conditions. The combination of cooling and desaturation can result in saving 60% of the water that would be present in fully saturated air exhaled at body temperature. A lower rate of breathing at night also increases the tidal volume. | Susanne Padel Conversion to Organic Milk Production the change process and farmers information needs PhD-Thesis December 2001 Institute of Rural Studies University of Wales Aberystwyth DECLARATION This work has not previously been accepted in substance for any degree and is not being concurrently submitted in candidature for any degree. Signed. candidate Date STATEMENT 1 This thesis is the result of my own investigations except where otherwise stated. Other sources are acknowledged by footnotes giving explicit references. A bibliography is appended. Signed. candidate Date STATEMENT 2 I hereby give consent for my thesis if accepted to be available for photocopying and for inter-library loan and for the title and summary to be made available to outside organisations. Signed. candidate Date II Acknowledgements I gratefully acknowledge financial support to the following projects under which this study was carried out MAFF now DEFRA Conversion to organic dairy farming and post conversion phase OF0113 and strategies of organic milk production OF0146 European Union Project AIR - 3C 92-0776 Organic Livestock Farming Nutritional Environmental and Economic Implications of Conversion I would like to thank all those who have supported me The organic farmers who supplied the information about their accounts and spent their precious time being interviewed by me Frank Emmot Sue Fowler Bruce Kenworthy Heather McCalman Dan Powell and Ken Stebbings for data collection My supervisors Prof. Michael Haines and Dr. Tim Jenkins for their guidance and support Mark Measures Dr. Nic Lampkin and Prof. P. Midmore for their critical comments Peter Bowling Evan Jones and Richard Weller from IGER for additional data Dr. Harvey Perkins for inspirational teaching in qualitative research methods Annette Musker and Jane Powell for copy editing and proof reading and My family Nic Katrin and Steffan for their patience and support. .