Epidemiology and Control of Nematodiasis in Cattle : An Animal Pathology in the CEC Programme of Coordination of Agricultural Research, Held at the Royal Veterinary and Agricultural University, Copenhagen, Denmark, February 4–6, 1980

This publication is the Proceedings of a workshop held at the Royal Veterinary and Agricultural University in Copenhagen, Denmark on 4th - 6th February, 1980, sponsored by the Commission of the EUropean Communities (CEO) as a part of the programme of coordination of agricultural research in the field of animal pathology. The CEO wishes to thank those who took responsibility for the organisation of the workshop, those who presented the papers, and all participants. VII CONTENTS SESSION I METHODOLOGY I MONITORING PASTURE INFECTIVITY AND PASTURE CONTAMINATION WITH INFECTIVE STAGES OF Dictyocaulus viviparus 3 R. J. J¢rgensen THE CORRECT HANDLING OF FAECAL SAMPLES USED FOR EXAMINATION OF Dictyocaulus viviparus LARVAE 11 H. J. W. M. Cremers SOME EFFECTS OF STORAGE ON THE RECOVERY OF Dictyocaulus viviparus LARVAE FROM FAECES 17 M. T. Fox EXPERIENCES WITH OUR TECHNIQUES FOR THE RECOVERY OF NEMATODE LARVAE FROM HERBAGE H. -J. Burger 25 A TECHNIQUE FOR THE RECOVERY OF INFECTIVE TRICHOSTRONGYLE LARVAE FROM SOIL 31 K. Bairden, J. L. Duncan and J. Armour SESSION I METHODOLOGY II A MODIFIED AND SIMPLE MCMASTER TECHNIQUE 45 Sv. Aa. Henriksen COMPARISON OF TECHNIQUES FOR ASSESSMENT OF THE CONTAMINATION OF PASTURE HERBAGE WITH INFECTIVE NEMATODE LARVAE 51 J. -P. Raynaud and L. Gruner RECOVERY OF Ostertagia FROM THE BOVINE ABOMASAL MUCOSA BY IMMERSION IN WARM NORMAL SALINE 69 N. E. Downey CONTROLLED/CRITICAL TESTS IN THE EVALUATION OF ANTHELMINTIC ACTIVITY 75 D. D{;. Front Matter....Pages I-X Front Matter....Pages 1-1 Monitoring Pasture Infectivity and Pasture Contamination with Infective Stages of Dictyocaulus viviparus ....Pages 3-9 The Correct Handling of Faecal Samples Used for Examination of Dictyocaulus viviparus Larvae....Pages 11-16 Some Effects of Storage on the Recovery of Dictyocaulus viviparus Larvae from Faeces....Pages 17-23 Experiences with Our Techniques for the Recovery of Nematode Larvae from Herbage....Pages 25-30 A Technique for the Recovery of Infective Trichostrongyle Larvae from Soil....Pages 31-42 Front Matter....Pages 43-43 A Modified and Simple McMaster Technique....Pages 45-49 Comparison of Techniques for Assessment of the Contamination of Pasture Herbage with Infective Nematode Larvae....Pages 51-68 Recovery of Ostertagia from the Bovine Abomasal Mucosa by Immersion in Warm Normal Saline....Pages 69-73 Controlled/Critical Tests in the Evaluation of Anthelmintic Activity....Pages 75-80 Back Matter....Pages 81-84 Front Matter....Pages 85-85 Observations on the Epidemiology and Pathogenicity of Nematode Infections in Adult Dairy Cattle in Great Britain....Pages 87-99 An Evaluation of Anthelmintic Treatment in a Dairy Herd....Pages 101-116 The Prevalence of Gastro-Intestinal Nematodes in Dairy Cows....Pages 117-130 Wormburdens in Adult Dairy Cattle....Pages 131-141 Organisation of a Large Collaborative Trial on the Effect of Anthelmintic Treatment on the Milk Yield of Dairy Cows....Pages 143-149 Back Matter....Pages 150-173 Front Matter....Pages 175-175 Significance of Nematodiasis in Cattle Grazing on Alpine Pastures....Pages 177-191 Recent Results on Epidemiology of Nematode Infections in Beef and Dairy Cattle in France....Pages 193-214 Recent Danish Studies on the Epidemiology of Bovine Parasitic Bronchitis....Pages 215-239 A New Aspect of the Epidemiology of Parasitic Bronchitis in Calves....Pages 241-248 Parasitological Effect of Alternate Grazing of Cattle and Sheep....Pages 249-260 Front Matter....Pages 261-261 Fluctuations of Herbage Infestation on Calf Pastures and Weather from 1973 to 1979....Pages 263-276 Back Matter....Pages 302-309 Front Matter....Pages 261-261 The Role of the Soil as a Potential Reservoir for Infective Larvae of Ostertagia ostertagi ....Pages 277-286 The Significance of Winter Survival of Free-Living Stages on the Epidemiology of Nematodiasis: Its Effect in Connection with Set-Stocking and Alternate Grazing with Sheep and Cattle....Pages 287-293 Winter Ostertagiasis in Swedish Cattle....Pages 295-301 Back Matter....Pages 302-309 Front Matter....Pages 311-311 Vaccination or Tactical Treatment with Levamisole Against Lungworm....Pages 313-323 Treatment of Cattle Nematodiasis with ® Panacur....Pages 325-348 A New Method of Control of Gastro-Intestinal Parasites in Grazing Calves....Pages 349-367 Some Remarks and Control Methods of Gastro-Intestinal Nematodiasis in Cattle in Piedmont, Italy....Pages 369-376 Front Matter....Pages 377-377 Some Observations on the Control of Trichostrongylosis in Calves in the Field....Pages 379-387 Coordinated Research Programme on Control of Ostertagiasis in Grazing Calves in Denmark....Pages 389-411 The Use of Anthelmintic Given at Continuous Low Dosage in Drinking Water to Control Nematodiasis in Calves....Pages 413-432 Some Physical Aspects of Continuous Low Dosage of Anthelmintics via Drinking Water....Pages 433-443 Back Matter....Pages 444-453 Front Matter....Pages 455-455 Epidemiology and Control of Gastro-Intestinal Helminthosis in Cattle Intensive-Breeding....Pages 457-470 The Importance of Stocking Rate to the Uptake of Gastrointestinal Nematodes by Grazing Calves....Pages 471-496 Trichostrongylid Nematode Infections Associated with the Handling of Cattle Slurry — a Survey of Danish Studies....Pages 497-509 Front Matter....Pages 511-511 Acquisition of Immunological Competence to Gastro-Intestinal Trichostrongyles by Young Ruminants: Epidemiological Significance....Pages 513-529 Performance of Resistant and Non-Resistant Calves during Repeated Infection with Cooperia spp. and Ostertagia spp. and Mixed Species....Pages 531-545 Infections with Cooperia oncophora in Calves....Pages 547-556 Experiments with Mixed Infections of Ostertagia ostertagi and Fasciola hepatica in Calves....Pages 557-567 Toxocariasis of Cattle in Belgium....Pages 569-582 Studies on Nematodes in Cattle Performed at University of Bologna. A Survey with Special Emphasis on Strongyloides papillosus ....Pages 583-591 Front Matter....Pages 593-593 Introduction....Pages 595-602 Back Matter....Pages 603-606 This publication is the Proceedings of a workshop held at the Royal Veterinary and Agricultural University in Copenhagen, Denmark on 4th - 6th February, 1980, sponsored by the Commission of the EUropean Communities (CEO) as a part of the programme of coordination of agricultural research in the field of animal pathology. The CEO wishes to thank those who took responsibility for the organisation of the workshop, those who presented the papers, and all participants. VII CONTENTS SESSION I METHODOLOGY I MONITORING PASTURE INFECTIVITY AND PASTURE CONTAMINATION WITH INFECTIVE STAGES OF Dictyocaulus viviparus 3 R.J. Jørgensen THE CORRECT HANDLING OF FAECAL SAMPLES USED FOR EXAMINATION OF Dictyocaulus viviparus LARVAE 11 H.J.W.M. Cremers SOME EFFECTS OF STORAGE ON THE RECOVERY OF Dictyocaulus viviparus LARVAE FROM FAECES 17 M.T. Fox EXPERIENCES WITH OUR TECHNIQUES FOR THE RECOVERY OF NEMATODE LARVAE FROM HERBAGE H.-J. Burger 25 A TECHNIQUE FOR THE RECOVERY OF INFECTIVE TRICHOSTRONGYLE LARVAE FROM SOIL 31 K. Bairden, J.L. Duncan and J. Armour SESSION I METHODOLOGY II A MODIFIED AND SIMPLE MCMASTER TECHNIQUE 45 Sv. Aa. Henriksen COMPARISON OF TECHNIQUES FOR ASSESSMENT OF THE CONTAMINATION OF PASTURE HERBAGE WITH INFECTIVE NEMATODE LARVAE 51 J.-P. Raynaud and L. Gruner RECOVERY OF Ostertagia FROM THE BOVINE ABOMASAL MUCOSA BY IMMERSION IN WARM NORMAL SALINE 69 N.E. Downey CONTROLLED/CRITICAL TESTS IN THE EVALUATION OF ANTHELMINTIC ACTIVITY 75 D. D{ This publication contains the proceedings of a seminar held in Toulouse, France, on 10th, 11th and 12th June 1980, under the auspices of the Commission of the European Communities, Directorate General for Agriculture, Division for the Coordination of Agricultural Research, as part of a programme of research on beef production. That knowledge should lead to the development of interpretative and hopefully predictive theories which in turn will allow us to meet the recommendations of Article 3 of the Council of Europe Convention on the Protection of Animals Kept for Farming Purposes: 'that animals shall be housed, provided with food. An Animal Pathology Seminar in the CEC Programme of Coordination of Agricultural Research held at the Royal Veterinary and Agricultural University, Copenhagen, Denmark, 4-6 February, 1980