Worm Control for Small Ruminants in Tropical Asia Control for Small Ruminants in Tropical Worm ACIAR Worm Control for Small Ruminants in Tropical Asia 113 Worm Control for Small Ruminants in Tropical Asia Editors: R.A. Sani, G.D. Gray and R.L. Baker Australian Centre for International Agricultural Research 2004 The Australian Centre for International Agricultural Research © Australian Centre for International Agricultural Research (ACIAR) was established in June 1982 by an Act of the GPO Box 1571, Canberra, Australia 2601. Australian Parliament. Its primary mandate is to help identify www.aciar.gov.au agricultural problems in developing countries and to email: [email protected] commission collaborative research between Australian and developing country researchers in fields where Australia has Sani R.A., Gray G.D., and Baker R.L. 2004 a special research competence. Worm Control for Small Ruminants in Tropical Asia ACIAR Monograph 113 Where trade names are used this does not constitute endorsement of nor discrimination against any product ISBN 1 86320 471 7 (print) by the Centre. 1 86320 472 5 (electronic) Technical editing: Keith Binnington, ACIAR Monograph Series Scribbly Gum Publications Pty Ltd This series contains the results of original research Design and layout: Design One Solutions supported by ACIAR, or material deemed relevant to ACIAR's research and development objectives. Printing: Lamb Print The series is distributed internationally, with an emphasis on developing countries. Worm control for small ruminants in tropical Asia Worm ii Foreword Sustainable technologies for the control of worm The three objectives of the project were: to prevent the parasites of goats and sheep in the tropics have been spread of resistance to anthelmintics (dewormers) used developed through a series of international research for control of nematode parasites of sheep and goats in projects, several of which have been supported Asia; to assess genetic variation in resistance to gastro- by ACIAR. intestinal nematode parasites in different breeds of sheep and goats; and to disseminate information ACIAR funded a collaborative project between research about control of internal parasites in the tropics. organisations in Southeast Asia for ILRI and regional partners to explore new ways to control helminth parasites This publication and the accompanying CD draw in the tropics. The project aimed to increase small together information from a number of sources to ruminant production in Southeast Asia by controlling describe the state of research and development internal parasites, which are one of the major constraints on worm control in sheep and goats in Asia and to sheep and goat production in the tropics. Control of the Pacific. internal parasites also provides an avenue for general This publication can also be downloaded from improvement in husbandry methods. the ACIAR website: www.aciar.gov.au. Peter Core Director Australian Centre for International Agricultural Research iii Worm control in small ruminants tropical Asia Worm iv Contents Preface and Acknowledgments 1 8. Worm control for small ruminants in the Philippines G.D. Gray et al 121 1. Worm control for small ruminants in 9. Worm control for small ruminants Southeast Asia R.A. Sani and G.D. Gray 3 in Indonesia Subandriyo, Tetty Sartika, Suhardono and G.D. Gray 151 2. The economic impact of worm infections in small ruminants in Southeast Asia, 10. Worm control for small ruminants India and Australia R.S. McLeod 23 in Malaysia R.A. Sani, M. Adnan, T.S. Cheah and P. Chandrawathani 189 3. Developing and testing integrated approaches to sustainable parasite 11. Worm control for small ruminants in Thailand control in small ruminants with farmers S. Kochapakdee and S. Saithanoo 201 in the Philippines, Vietnam, and Indonesia A.M.P. Alo 35 12. Goat production, parasites and testing of control options in Lao, Cambodia 4. Anthelmintic resistance in small ruminant and Vietnam R.A. Sani, Dinh Van Binh, parasites: implications for smallholders Nguyen Duy Ly, Sorn San and Viengsavanh in Southeast Asia G.M. Hood 51 Phimphachanhvongsod. 211 5. Appropriate breeds and breeding 13. Worm control for small ruminants in Fiji schemes for sheep and goats in the P. Manueli 219 tropics R.L. Baker and G.D. Gray 63 14. Internal parasites of small ruminants 6. Options to overcome worm infection in Papua New Guinea B.R. Joshi 241 for small ruminant producers in Nepal R. K. Bain, B. R. Joshi, D. Gauchan 15. Internal parasites of small ruminants and G. D. Gray 97 in Nepal B.R. Joshi 249 7. The impact of parasitism on the development of small ruminant populations Appendix – list of authors 263 in Southeast Asia G.M. Hood 113 v Worm control for small ruminants in tropical Asia Worm vi Preface and Acknowledgments The chapters in this volume were written originally that efforts to develop new approaches to worm between 1999 and 2001 to support the efforts control, develop new technologies, and adapt existing of projects being implemented by the International technologies, would be strengthened by making this Livestock Research Institute with partners in Asia store of knowledge and experience available to the and Australia. Now updated, and together with the project partners and their research teams. This has accompanying CD, they describe information which, been done within the project by publishing the early at the beginning of the projects, we believed was versions of these chapters and internal documents lacking or incomplete because much of the research and circulating electronic versions on CD. As these on parasite control in small ruminants in our partner initial projects drew to a close in 2003, it was timely countries was not readily available. The difficulties to gather them in a single volume. of publishing applied research of local importance The chapters vary in style and content reflecting in international media are widely acknowledged. the different needs of the partner countries and the If published, it is often in national journals and, quite amount of information available. In a few cases, appropriately, in the national language of the country some original research is described briefly. Although where the work has been carried out. However, local being published formally here, the work is ongoing, publication denies the authors the opportunity to have and updates will be available electronically through their work reviewed by peers in the international the authors and the project website which can be scientific and development community and denies accessed via ILRI at www.ilri.org or directly at regional and international readership access to the new www.worminfo.org. research. When an international journal editor returns a well-written paper to its author commenting that The assessment of the the importance of small ruminants ‘the topic is not of sufficiently wide interest to our and the needs for parasite control in Nepal (Chapter 6) readership’, that is often accurate and understandable was undertaken against a background of substantial as most paying subscribers will be in Europe or North research of sheep and goats in Nepal, principally by America, but little comfort to millions of farmers, scientists based at the Lumle and Pakhribas research thousands of extension workers and hundreds of centres. That research is reviewed in Chapter 15. scientists whose livelihoods in the tropics are either The accompanying CD contains all these chapters and constrained or occupied by the problems of worm many other tools and resources to assist those with an control. interest in worm control. The immediate beneficiaries Supporting information was therefore a priority for the will be researchers about to embark on a new research projects which funded this collection of ‘grey’ literature project, extension or development workers trying to that is ‘not cited internationally’. Our rationale has been solve immediate parasite problems or develop local 1 control strategies, and teachers of animal, veterinary advocate of applied research to benefit poor farmers. and extension science who will benefit from a more ACIAR contributed much to the earlier research being complete approach to worm control than provided by summarised here, notably in Indonesia, Malaysia and the lists of chemicals and parasites which dominate Fiji, and has contributed the funds to edit, publish and the conventional literature. The final beneficiaries, of distribute this book and CD. Jenny Edwards provided course, we expect to be the millions of poor livestock critical interpretation and skilful editing of many keepers who depend on sheep and goats, those who chapters. have no livestock but may use small ruminants as a pathway to build some assets and income, and The names and institutions of those involved in these subsistence farmers who may see the opportunity projects are reflected in the authorship and their to expand their livestock farming to a more market- affiliations listed in the following pages. Missing, oriented enterprise. however, are the hundreds of their collaborators and the thousands of farmers across the region who have The list of people and institutions to be acknowledged given up their time to answer questions, record data is long and reflects the breadth of the partnerships that and travel hundreds of thousands of kilometres to create have been developed and exploited to bring Better this information and knowledge. That they have done Worm Control for Small Ruminants in Asia to the press. so reflects the importance they give to small ruminants The logos of their institutions alone would occupy several as a source of livelihood in their communities and the pages. Gathering and synthesising the information and degree to which helminth infections reduce the many development of the decision support tool Goatflock is benefits that sheep and goats can provide. From this a specific output of a project funded by the International publication, we hope that these constraints are better Fund for Agricultural Development (TAG 443), where understood and that more people will find Ahmed Sidahmed has provided critical support and better ways of overcoming them.