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  1. Behavioural and physiological responses to pest flies in pastured dairy cows treated with a natural repellent

    Contributor(s):: Woolley, Carrie E., Lachance, Simon, DeVries, Trevor J., Bergeron, Renée

    The effects of reducing fly attack intensity, using an essential oil fly repellent, on fly avoidance behaviour, grazing, milk production and stress was evaluated. Twenty Holstein dairy cows on pasture were divided into two groups of 10, which were alternatively treated with the repellent, or left...

  2. A survey of canine heartworm awareness in Grenada, West Indies

    Contributor(s):: Lohmann, S., Sage, S., Stone, D., Gibson, K.

    Heartworm is a common parasite of dogs in Grenada, West Indies, due to the tropical climate and large number of mosquitoes. Because Grenada is a developing country and a small island, resources and education on heartworm are limited. In an effort to raise awareness of canine heartworm and the...

  3. A note on the effect of controlling stable flies ( Stomxys calcitrans ) in the resting activity and pen distribution of dairy cows

    Contributor(s):: Vitela, I., Cruz-Vazquez, C., Orihuela, A.

    This study investigated the effect of controlling stable flies (Stomoxys calcitrans) on the number of dairy cows lying down and their pen distribution. The study randomly assigned 80 Holstein cows to 1 of 2 groups. The treated group (T) included cows individually sprayed with insecticide when...

  4. Myiasis in pet animals in British Columbia: the potential of forensic entomology for determining duration of possible neglect

    Contributor(s):: Anderson, G. S., Huitson, N. R.

  5. Ectoparasites of dogs belonging to people in resource-poor communities in North West Province, South Africa

    Contributor(s):: Bryson, N. R., Horak, I. G., Hohn, E. W., Louw, J. P.

  6. Ethical issues associated with sheep fly strike research, prevention, and control

    Contributor(s):: Morris, M. C.

    This paper deals with ethical issues associated with fly strike research, prevention and control. It is argued that in their attempt to find control solutions and to understand the disorder, Australasian researchers increase sheep suffering by conducting experiments that artificially induce fly...

  7. Face-fly pest intensity, fly-avoidance behavior (bunching) and grazing time in Holstein heifers

    Contributor(s):: Schmidtmann, E. T., Valla, M. E.

    In field studies in New York State in 1978-79, the relationship between feeding by adults of Musca autumnalis Deg., and fly-avoidance behaviour (bunching) and grazing time of heifers was examined in herds that were either exposed to the ambient pest intensity levels or treated with permethrin...

  8. Refuge-seeking and pest avoidance by feral horses in desert and island environments

    Contributor(s):: Keiper, R. R., Berger, J.

    Patterns of resource exploitation were examined among 2 populations of feral horses in the USA, to investigate whether harassment by insects results in the use of 'refuge' sites to minimise pest pressures. In the first study site, Assateague, a barrier island off the Atlantic coast of Maryland...

  9. Effects of headfly ( Hydrotaea irritans Fallen) infestations and repellents on ear-flicking and head-shaking behaviour of farmed red deer ( Cervus elaphus L.)

    Contributor(s):: Woollard, T. H., Bullock, D. J.

    The effects of Hydrotaea irritans on farmed red deer in Scotland are described. The degree of irritation by headfly varied with the age and sex of the deer. Yearling hinds had higher ear-flicking rates than either yearling or adult stags. Both sexes of yearlings had higher head-shaking...

  10. Effects of fly disturbance on the behaviour of a population of reintroduced Przewalski horses ( Equus ferus przewalskii ) in Mongolia

    Contributor(s):: King, S. R. B., Gurnell, J.

    Flies constitute a cost to animals by feeding from them, passing on disease or by preventing them feeding effectively. These costs could be more severe to animals suffering from some kind of stress such as reintroduction as part of a conservation programme. This study focused on the effects of...

  11. Reproductive status and differential response to attacking insects in female reindeer

    Contributor(s):: Kojola, I.

    In Finland, the activity budgets (i.e. time spent lying, standing, feeding, walking and running) of lactating and yeld (i.e. barren, dry) female wild forest reindeer (Rangifer tarandus fennicus) during gadfly (Tabanidae) attacks were compared on 6 sunny afternoons during mid and late summer in...

  12. Behavior of grazing cattle exposed to small populations of stable flies ( Stomoxys calcitrans L.)

    Contributor(s):: Dougherty, C. T., Knapp, F. W., Burrus, P. B., Willis, D. C., Cornelius, P. L.

    The authors hypothesized that cattle grazing in the presence of low-level infections of stable flies may offset reductions of grazing time by increasing their rate of herbage intake, and that this may contribute to the determination of economic threshold populations. On 4 consecutive days, 4...

  13. Face flies ( Musca autumnalis De Geer) and the behavior of grazing beef cattle

    Contributor(s):: Dougherty, C. T., Knapp, F. W., Burrus, P. B., Willis, D. C., Bradley, N. W.

    Zero, 400 or 800 laboratory-reared adult face flies (Musca autumnalis De Geer), which had been deprived of nutrients and water for 12 h, were released in large (5 m x 5 m x 2 m) screened enclosures each containing one tethered adult Angus beef cow (Bos taurus) grazing tall fescue (Festuca...

  14. Moderation of grazing behaviour of beef cattle by stable flies ( Stomoxys calcitrans L.)

    Contributor(s):: Dougherty, C. T., Knapp, F. W., Burrus, P. B., Willis, D. C., Cornelius, P. L.

    Three concatenated latin squares (4 x 4) were used to evaluate the effects of stable flies on the behaviour of Angus cows grazing in screened enclosures. Four populations (0, 50, 100 and 150) of starved, laboratory-reared stable flies were released into each enclosure at 15 min intervals during 1...

  15. Multiple releases of stable flies ( Stomoxys calcitrans L.) and behaviour of grazing beef cattle

    Contributor(s):: Dougherty, C. T., Knapp, F. W., Burrus, P. B., Willis, D. C., Cornelius, P. L., Bradley, N. W.

    A change-over statistical design with complete balance of first residual effects was used with a tethered grazing technique to evaluate the effects of arthropod ectoparasites on the behaviour of adult Angus beef cows (Bos taurus; body weight (BW), 465+or-30 kg) grazing vegetative tall fescue...

  16. Stable flies ( Stomoxys calcitrans L.) and the behaviour of grazing beef cattle

    Contributor(s):: Dougherty, C. T., Knapp, F. W., Burrus, P. B., Willis, D. C., Burg, J. G., Cornelius, P. L., Bradley, N. W.

    A change-over design with complete balance for first residual effects was used with a tethered grazing technique to evaluate the effects of arthropod ectoparasites on the behaviour of adult Angus beef cows (Bos taurus) (body weight (BW), 465+or-30 kg) grazing vegetative tall fescue (Festuca...

  17. A review of mulesing and other methods to control flystrike (cutaneous myiasis) in sheep

    Contributor(s):: Phillips, C. J. C.

    Flystrike (cutaneous myiasis) in sheep has the potential to have a major impact on the welfare of significant numbers of sheep worldwide, but particularly in Australia. The main control method used in Australia, the mulesing operation to remove folds of skin from the hindquarters of the sheep, is...