L Rudby-Martin

Swedish University of Agricultural Sciences

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B.-L. Ljungström

Swedish Veterinary Agency

A. Rydzik

Swedish University of Agricultural Sciences

Lisa Petersson

Swedish University of Agricultural Sciences

P.J. Waller

Swedish Veterinary Agency

Gun Bernes

Swedish University of Agricultural Sciences

O. Schwan

Visby lasarett

S. O. Jacobsson

Uppsala University

Waller Pj

Swedish University of Agricultural Sciences

Adrian Frank

Swedish University of Agricultural Sciences

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Swedish University of Agricultural Sciences

Swedish Veterinary Agency

Linköping University Hospital

Commonwealth Scientific and Industrial Research Organisation

Animal, Food and Health Sciences

Département Santé Animale

Uppsala University

Universitat Autònoma de Barcelona

Uppsala University Hospital

Eskilstuna Municipality

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Evaluation of Copper Supplementation to Control Haemonchus contortusInfections of Sheep in Sweden

Acta veterinaria Scandinavica (2004)

Waller Pj Gun Bernes L Rudby-Martin B.-L. Ljungström A. Rydzik

A pen study was conducted to assess the effect of providing daily copper mineral supplement, or copper wire particle (COWP) capsules, on established or incoming mixed nematode infections in young sheep. For lambs with established (6 week old) infections, COWP resulted in 97% and 56% reduction of the adult and early L4 stages of H. contortus, respectively, compared with controls (p < 0.001). Additionally there was a 74% reduction in Teladorsagia circumcincta infections in the COWP lambs compared with controls (p < 0.01). However, no effect was observed when COWP were given at the commencement of a larval dosing period of 6 weeks. There was no significant effect of copper mineral supplement (given at the recommended rate to prevent Cu deficiency) on either established, or developing parasite infections. In addition, a field trial was conducted on a commercial farm to assess the effects of COWP in the management of recurrent H. contortus infections, but lack of parasites during the grazing season prevented an adequate assessment from being made. These results indicate that there is little, if any, benefit from a parasite control standpoint in recommending copper therapy, specifically to control parasites in Swedish sheep flocks.

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Levamisole

10.1186/1751-0147-45-149

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Cobalt and Copper Deficiency in Swedish Landrace Pelt Sheep

Journal of Veterinary Medicine Series A (1987)

O. Schwan S. O. Jacobsson Adrian Frank L Rudby-Martin Lisa Petersson

Summary In 1983, lambs in flocks on eastern Gotland in the Baltic were observed to be suffering from poor growth, depressed appetite, poor general condition, anaemia, loss of wool, serous lacrimal secretion and ataxia. The diagnosis of cobalt deficiency was established on the basis of the clinical findings. Multielement analysis confirmed the suspicions, and in addition also revealed that the copper level was unsatisfactory. Analytical chemical investigations on a total of a 49 lambs, representing 19 flocks, randomly picked out from animals brought to an abattoir on Gotland, revealed that almost 90 % of these lambs had cobalt deficiency and more than 50 % had moderate or severe copper deficiency. In three treatment trials with vitamin B 12 i.m., cobalt and copper enriched mineral feed, the symptoms disappeared and growth returned to normal; a result that also supported the diagnosis. In view of the findings of this study, it is evident that clinico‐chemical and multielement analysis are important in the investigatory diagnostic work undertaken for disease prevention. Zusammenfassung Kobalt‐ und Kupfermangel bei Schafen der Schwedischen Landrasse Diagnostische Maßnahmen bei Mangelkrankheiten von Herden: Im Jahr 1983 wurden in Schafherden in Ostgotland Wachstumsstörungen, reduzierter Appetit, schlechter Allgemeinzustand, Anämie, Wollverlust, seröser Tränenfluß und Ataxie beobachtet. Aufgrund der klinischen Befunde wurde die Diagnose Kobaltmangel gestellt. Multielementanalyse bestätigte diesen Verdacht und ergab zusätzlich eine ungenügende Kupferversorgung. Die chemische Analyse bei insgesamt 49 Lämmern aus 19 Herden, die zufällig am Schlachthof Gotland ausgewählt wurden, erbrachte bei fast 90 % der Lämmer einen Kobaltmangel und bei über 50 % einen mäßigen bis schweren Kupfermangel. In drei Behandlungsversuchen mit intramuskulärer Vitamin‐B 12 ‐Verabreichung sowie mit Kobalt und Kupfer angereichertem Mineralfutter verschwanden die Symptome und das Wachstum normalisierte sich. Dieses Ergebnis stützt ebenfalls die Diagnose. Die Ergebnisse dieser Untersuchungen zeigen, daß klinisch‐chemische Untersuchungen sowie Multielementanalyse wichtige diagnostische Maßnahmen für die Krankheitsprevention darstellen.

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10.1111/j.1439-0442.1987.tb00336.x

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The epidemiology of abomasal nematodes of sheep in Sweden, with particular reference to over-winter survival strategies

Veterinary Parasitology (2004)

P.J. Waller L Rudby-Martin B.-L. Ljungström A. Rydzik

Teladorsagia circumcincta

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Domestic sheep reproduction

Nematode infection

10.1016/j.vetpar.2004.04.007

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Citations (152)