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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

A quantitative real-time polymerase chain reaction (qPCR) based on hydrolysis (TaqMan®) probes is described for robust and sensitive detection of the infection levels with eggs and third stage larvae (L3) of Cooperia oncophora and Ostertagia ostertagi isolated from cattle faeces. The current...

Author(s)
Höglund, J.; Engström, A.; Samson-Himmelstjerna, G. von; Demeler, J.; Tydén, E.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Veterinary Parasitology, 2013, 197, 1/2, pp 251-257
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

A multiplex PCR-based method was developed to overcome the limitations of microscopic examination as a means of identifying individual infective larvae from the wide range of strongylid parasite species commonly encountered in sheep in mixed sheep-cattle grazing situations in New Zealand. The...

Author(s)
Bisset, S. A.; Knight, J. S.; Bouchet, C. L. G.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2014, 200, 1/2, pp 117-127
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

Results from worm egg counts (WECs) of cattle from across Australia over an 11 year period have been analysed to provide contemporary data on WEC and worm genus distribution in Australian cattle. A sampling kit consisted of ten sample containers. Faecal samples were collected into each sampling kit ...

Author(s)
Taylor, L.; Hodge, A.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2014, 204, 3/4, pp 269-278
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

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