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Attack intensity of pest flies and the behavioural responses of pastured dairy cows

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dc.contributor.advisor Bergeron, Renee Woolley, Carrie 2013-09-12T17:31:07Z 2013-09-12T17:31:07Z 2013-09 2013-08-29 2013-09-12
dc.description.abstract Pest fly species and abundance, fly avoidance behaviours, grazing behaviour, milk cortisol, and milk production were studied to understand the impact of pest flies on dairy cows at pasture. Treatment of cows with a natural fly repellent based on sunflower oil and essential oils, lemongrass and geranium, was used to compare cows with reduced fly attack intensity to untreated cows. Treatment of cows with the fly repellent resulted in a 69.5 % reduction in pest fly attack intensity. Treated cows also had reduced rates of tail flicks, skin twitches, head throws, and leg stamps by 44.8 %, 54.0 %, 78.9 %, and 45.1 % respectively. The reduction of flies on treated cows had no effect on milk cortisol and milk production. Treatment of cows with an effective, natural fly repellent may improve cow comfort with reduced levels of painful biting flies and fly avoidance behaviours. en_US
dc.description.sponsorship Dairy Farmers of Ontario, Organic Meadow Cooperative Inc., Aliksir Inc., Agricultural Adaptation Council en_US
dc.language.iso en en_US
dc.rights Attribution-NonCommercial 2.5 Canada *
dc.rights.uri *
dc.subject Dairy cattle en_US
dc.subject Pest flies en_US
dc.subject Animal behaviour en_US
dc.subject Fly avoidance en_US
dc.subject Stress en_US
dc.subject Essential oils en_US
dc.title Attack intensity of pest flies and the behavioural responses of pastured dairy cows en_US
dc.type Thesis en_US Animal and Poultry Science en_US Master of Science en_US Department of Animal and Poultry Science en_US
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Attribution-NonCommercial 2.5 Canada Except where otherwise noted, this item's license is described as Attribution-NonCommercial 2.5 Canada