Production impact of a targeted selective treatment system based on liveweight gain in a commercial flock

Busin, Valentina; Kenyon, Fiona; Parkin, T. D. H.; McBean, David; Laing, N.G.; Sargison, Neil; Ellis, Kathryn

doi:10.1016/j.tvjl.2014.02.012

Cited by 34 publications

(18 citation statements)

References 23 publications

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“…Although the use of live weight (gain) as a TST indicator may be regarded as both a practical and a farmer-friendly approach to nematode control and has been successfully used in sheep under commercial conditions (Busin et al, 2014), it may not be entirely suitable for cattle under all conditions. Many factors such as genetic, nutritional, management and other infectious agents (e.g., respiratory viruses) or other parasite factors that are unresponsive to anthelmintic treatment (e.g., coccidia), can all potentially affect live weight gain in calves over the course of a grazing season.…”

Section: Discussionmentioning

confidence: 99%

Controlling nematodes in dairy calves using targeted selective treatments

O'Shaughnessy

Earley

Mee

et al. 2015

Veterinary Parasitology

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Section: Discussionmentioning

confidence: 99%

Controlling nematodes in dairy calves using targeted selective treatments

O'Shaughnessy

Earley

Mee

et al. 2015

Veterinary Parasitology

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“…within a herd, are promoted as a method of maintaining animal performance whilst reducing the selection of anthelmintic resistant nematodes [2]. However, until now, TST have been mostly evaluated in sheep [26][27][28][29][30][31] and few data are available to determine which parameters are useful in identifying cattle that would benefit most from anthelmintic treatment. Previously the anti-O.…”

Section: Discussionmentioning

confidence: 99%

Non-invasive indicators associated with the milk yield response after anthelmintic treatment at calving in dairy cows

et al. 2014

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Background: Gastrointestinal nematodes are an important cause of reduced performance in cattle. Previous studies in Europe showed that after anthelmintic treatment an average gain in milk production of around 1 kg per day/ cow can be expected. However, (1) these studies have mainly evaluated group-based anthelmintic treatments during the grazing season or at housing and (2) little is known about parameters affecting variations in the treatment response amongst cows. A better knowledge of such parameters could help to select animals that benefit most from treatment and thus lead to a more rational use of anthelmintics. Therefore, a randomized, non-blinded, controlled clinical trial was performed on 11 commercial dairy farms (477 animals) in Belgium, aiming (1) to study the effect of eprinomectin treatment at calving on milk production and (2) to investigate whether the milk yield response was related to non-invasive animal parameters such that these could be used to inform targeted selective treatment decisions. Results: Analyses show that eprinomectin treatment around calving resulted in an average (± standard error) increase of 0.97 (±0.41) kg in daily milk yield that was followed up over 274 days on average. Milk yield responses were higher in multiparous compared to primiparous cows and in cows with a high (4 th quartile) anti-O. ostertagi antibody level in a milk sample from the previous lactation. Nonetheless, high responses were also seen in animals with a low (1 st quartile) anti-O. ostertagi antibody level. In addition, positive treatment responses were associated with higher faecal egg counts and a moderate body condition score at calving (2 nd quartile).

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“…The disadvantages to such a method include the potential high labour inputs, especially if labour-saving technology is not used for weighing and data recording. Regular monitoring will identify drops in group performance as well as in individuals, and generate opportunities for targeted selective treatment protocols, further reducing overall drench usage (Kenyon and others 2009, Stear and others 2009, Busin and others 2014). A review of key phases of growth is described by Gascoigne and Lovatt (2015).…”

Section: Haccp: Risk-based Pge Management Planningmentioning

confidence: 99%

Controlling nematode infections in sheep: application of HACCP

Gascoigne¹,

Morgan²,

Lovatt³

et al. 2018

In Practice

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Gastrointestinal nematode infection in sheep is a significant challenge for production with implications for animal health and welfare, and lamb growth. Flocks rely on the chemical control of worm burdens, but with the increasing challenge of anthelmintic resistance there is a necessity for farmers to uptake SCOPs (Sustainable Control of Parasites) guidance. Vets need to communicate practical strategies to farmers and suggest novel approaches that address these challenges so that holistic and sustainable parasite management can be achieved. This article examines the challenge of nematode infections and anthelmintic resistance and suggests how hazard analysis and critical control point (HACCP) application may facilitate a whole-flock strategy.

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Production impact of a targeted selective treatment system based on liveweight gain in a commercial flock

Cited by 34 publications

References 23 publications

Controlling nematodes in dairy calves using targeted selective treatments

Controlling nematodes in dairy calves using targeted selective treatments

Non-invasive indicators associated with the milk yield response after anthelmintic treatment at calving in dairy cows

Controlling nematode infections in sheep: application of HACCP

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