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Abstract

In Europe, most nematodoses are subclinical involving morbid rather than mortal effects and control is largely achieved using anthelmintics. In cattle, the genera most associated with sub-optimal performance are Ostertagia and Cooperia whereas in sheep and goats, subclinical losses are most often...

Author(s)
Kenyon, F.; Jackson, F.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Veterinary Parasitology, 2012, 186, 1/2, pp 10-17
Abstract

A 4-year study on the free-living stages of cattle gastrointestinal nematodes was conducted to determine (a) the development time from egg to infective larvae (L3) inside the faecal pats, (b) the pasture infectivity levels over time, and (c) the survival of L3 on pasture. Naturally infected calves...

Author(s)
Fiel, C. A.; Fernández, A. S.; Rodríguez, E. M.; Fusé, L. A.; Steffan, P. E.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Veterinary Parasitology, 2012, 187, 1/2, pp 217-226
Abstract

We investigated the magnitude of temporal changes in activity, posture and feeding behaviour of cattle infected with Ostertagia ostertagi, and their reversal after treatment with an anthelmintic. Twenty-six, 3-month-old, Holstein-Friesian bulls were allocated to one of three treatment groups. Bulls ...

Author(s)
Szyszka, O.; Tolkamp, B. J.; Edwards, S. A.; Kyriazakis, I.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Veterinary Parasitology, 2013, 193, 1/3, pp 214-222
Abstract

A three-year trial was performed in south-western Sweden to compare animal performance and levels of parasite control in three grazing groups, each with 18-24 first-season grazing (FSG) calves in similar set-stocked pasture enclosures. These groups were subjected to: (1) no parasite control (NT),...

Author(s)
Höglund, J.; Dahlström, F.; Sollenberg, S.; Hessle, A.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Veterinary Parasitology, 2013, 196, 3/4, pp 358-365
Abstract

This study aimed to estimate the prevalence of gastrointestinal nematodes and the intensity of infection in grazing dairy cattle from small and medium-sized farms in southern Poland. The level of antibodies against Ostertagia ostertagi in the bulk tank milk (BTM) from the animals was also assessed. ...

Author(s)
Piekarska, J.; Płoneczka-Janeczko, K.; Kantyka, M.; Kuczaj, M.; Gorczykowski, M.; Janeczko, K.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2013, 198, 1/2, pp 250-253
Abstract

To investigate future tools for targeted selective treatment against gastrointestinal nematodes (GIN) in adult dairy cows, we evaluated herd and individual cow factors associated with the post-treatment milk production (MP) response over time. A field trial involving 20 pasturing dairy herds in...

Author(s)
Ravinet, N.; Bareille, N.; Lehebel, A.; Ponnau, A.; Chartier, C.; Chauvin, A.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2014, 201, 1/2, pp 95-109
Abstract

The objectives of the present study were: (1) to report the percentage of cattle farms with gastrointestinal nematodes (GINs) resistant to levamisole in Veracruz, Mexico, (2) to identify the genera of GINs involved in resistance, and (3) to identify factors associated with these resistances. The...

Author(s)
Becerra-Nava, R.; Alonso-Díaz, M. A.; Fernández-Salas, A.; Quiroz, R. H.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2014, 204, 3/4, pp 285-290
Abstract

Sera from calves originating on a 17,000 ha ranch in southeastern Alberta, were collected over three consecutive years (2008-2010) at weaning and analysed for the presence of anti-Ostertagia antibodies using the SVANOVIR® Ostertagia ostertagi-Ab ELISA kit. Faecal samples taken at the same time were ...

Author(s)
Colwell, D. D.; Beck, M. A.; Goater, C. P.; Abbas, R. Z.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2014, 205, 1/2, pp 169-174
Abstract

The aim of this study was to identify the presence of anthelmintic resistance to benzimidazole (BZ) in gastrointestinal nematodes (GIN) from naturally infected calves in the tropical regions of Campeche State of Mexico. The faecal egg count reduction test (FECRT) was conducted at 10 livestock farms ...

Author(s)
Encalada-Mena, L.; Tuyub-Solis, H.; Ramirez-Vargas, G.; Mendoza-de-Gives, P.; Aguilar-Marcelino, L.; López-Arellano, M. E.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2014, 205, 1/2, pp 246-254
Abstract

With increasing concerns of anthelmintic resistance in cattle nematode populations worldwide, there is a need to explore alternative approaches to nematode control. One alternative approach is the use of targeted selective treatments (TST) where only individual animals are treated instead of the...

Author(s)
O'Shaughnessy, J.; Earley, B.; Mee, J. F.; Doherty, M. L.; Crosson, P.; Barrett, D.; Waal, T. de
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2015, 209, 3/4, pp 221-228

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