Search Results - "Jonsson, N.N."

Progress in the epidemiology and diagnosis of amitraz resistance in the cattle tick Boophilus microplus by Jonsson, N.N., Hope, M.

“…Amitraz is a rapidly acting acaricide that has been in use for the control of cattle ticks for more than 30 years. Resistance against amitraz was first…”
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Development of a novel Bluetooth Low Energy device for proximity and location monitoring in grazing sheep by Walker, A.M., Jonsson, N.N., Waterhouse, A., McDougall, H., Kenyon, F., McLaren, A., Morgan-Davies, C.

“…•Bluetooth Low Energy (BLE) presents opportunities for animal monitoring.•Purpose−built devices were calibrated alongside commercial BLE beacons.•Distance…”
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Effects of environmental heat on conception rates in lactating dairy cows: critical periods of exposure by Morton, J M, Tranter, W P, Mayer, D G, Jonsson, N N

“…Environmental heat can reduce conception rates (the proportion of services that result in pregnancy) in lactating dairy cows. The study objectives were to…”
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Productivity and health effects of anaplasmosis and babesiosis on Bos indicus cattle and their crosses, and the effects of differing intensity of tick control in Australia by Jonsson, N.N., Bock, R.E., Jorgensen, W.K.

“…Tick fever is an important disease of cattle where Rhipicephalus ( Boophilus) microplus acts as a vector for the three causal organisms Babesia bovis, Babesia…”
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Laboratory studies on Australian isolates of Metarhizium anisopliae as a biopesticide for the cattle tick Boophilus microplus by Leemon, D.M., Jonsson, N.N.

“…Thirty-one isolates of Metarhizium anisopliae were bioassayed against the cattle tick ( Boophilus microplus). More than half of the isolates showed a high…”
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Light microscopic observations of the ruminal papillae of cattle on diets with divergent forage to cereal ratios by Ferguson, H.J., Koh-Tan, H.H.C., Johnston, P.E.J., Wallace, R.J., Andonovic, I., Michie, C., McCartney, C.A., Strachan, E.M., Snelling, T.J., Harvey, C.D., Thomson, W., Jonsson, N.N.

“…•Characteristic histological change is associated with dietary cereal proportion.•Immune-related cells are found in higher densities in cattle on lower cereal…”
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Identification of a mutation in the para-sodium channel gene of the cattle tick Rhipicephalus microplus associated with resistance to flumethrin but not to cypermethrin by Jonsson, N.N., Cutullè, C., Corley, S.W., Seddon, J.M.

“…A mutation in the domain II S4–5 linker region of the para-sodium channel gene has been associated previously with synthetic pyrethroid (SP) resistance in the…”
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Postmortem observations on rumen wall histology and gene expression and ruminal and caecal content of beef cattle fattened on barley-based rations by Jonsson, N. N., Ferguson, H. J., Koh-Tan, H. H. C., McCartney, C. A., Cernat, R. C., Strachan, E. M., Thomson, W., Snelling, T. J., Harvey, C. D., Andonovic, I., Michie, C., Wallace, R. J.

“…Sub-acute ruminal acidosis (SARA) can reduce the production efficiency and impair the welfare of cattle, potentially in all production systems. The aim of this…”
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Comparison of metabolic, hematological, and peripheral blood leukocyte cytokine profiles of dairy cows and heifers during the periparturient period by Jonsson, N N, Fortes, M R S, Piper, E K, Vankan, D M, de Cisneros, J Prada J, Wittek, T

“…The periparturient period presents major physiological challenges for the dairy cow. It is a period that is affected by metabolic stressors, major changes in…”
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Critical evaluation of the modified-adult immersion test with discriminating dose bioassay for Boophilus microplus using American and Australian isolates by Jonsson, N.N., Miller, R.J., Robertson, J.L.

“…Similar adult immersion tests (AITs) for acaricide susceptibility of Boophilus microplus were done in Texas, USA (Muñoz strain) and in Queensland, Australia…”
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Local immune response against larvae of Rhipicephalus ( Boophilus) microplus in Bos taurus indicus and Bos taurus taurus cattle by Constantinoiu, C.C., Jackson, L.A., Jorgensen, W.K., Lew-Tabor, A.E., Piper, E.K., Mayer, D.G., Venus, B., Jonsson, N.N.

“…Bos taurus indicus cattle are less susceptible to infestation with Rhipicephalus ( Boophilus) microplus than Bos taurus taurus cattle but the immunological…”
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Frequency of feline diabetes mellitus and breed predisposition in domestic cats in Australia by Lederer, R., Rand, J.S., Jonsson, N.N., Hughes, I.P., Morton, J.M.

“…The frequency of diabetes mellitus is described for cats that received veterinary care from two large feline-only clinics in Brisbane, Australia. Frequency was…”
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World Association for the Advancement of Veterinary Parasitology (W.A.A.V.P.) guidelines for evaluating the efficacy of acaricides against ticks (Ixodidae) on ruminants by Holdsworth, P.A., Kemp, D., Green, P., Peter, R.J., De Bruin, C., Jonsson, N.N., Letonja, T., Rehbein, S., Vercruysse, J.

“…These guidelines have been prepared to assist in the planning, conduct and interpretation of studies for the assessment of the efficacy of acaricides…”
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Comparative studies on the invasion of cattle ticks ( Rhipicephalus ( Boophilus) microplus) and sheep blowflies ( Lucilia cuprina) by Metarhizium anisopliae (Sorokin) by Leemon, D.M., Jonsson, N.N.

“…Microscopy studies on the invasion of cattle ticks ( Rhipicephalus microplus) and sheep blowflies ( Lucilia cuprina) by Metarhizium anisopliae reveal different…”
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Population structure of Australian isolates of the cattle tick Rhipicephalus ( Boophilus) microplus by Cutullé, C., Jonsson, N.N., Seddon, J.

“…Since its introduction in Australia, and despite decades of movement control, the cattle tick, Rhipicephalus ( Boophilus) microplus, has spread widely in…”
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Rotation of treatments between spinosad and amitraz for the control of Rhipicephalus ( Boophilus) microplus populations with amitraz resistance by Jonsson, N.N., Miller, R.J., Kemp, D.H., Knowles, A., Ardila, A.E., Verrall, R.G., Rothwell, J.T.

“…A farmlet study was conducted over 4 years in which three treatments were applied to six groups of Holstein dairy calves. Calves in each group were infested…”
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Pen studies on the control of cattle tick (Rhipicephalus ( Boophilus) microplus) with Metarhizium anisopliae (Sorokin) by Leemon, D.M., Turner, L.B., Jonsson, N.N.

“…Three field trials were conducted over 12 months to assess the pathogenicity of Metarhizium anisopliae to parasitic stages of Rhipicephalus ( Boophilus)…”
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Factors that influence the prevalence of acaricide resistance and tick-borne diseases by Foil, L.D., Coleman, P., Eisler, M., Fragoso-Sanchez, H., Garcia-Vazquez, Z., Guerrero, F.D., Jonsson, N.N., Langstaff, I.G., Li, A.Y., Machila, N., Miller, R.J., Morton, J., Pruett, J.H., Torr, S.

“…This manuscript provides a summary of the results presented at a symposium organized to accumulate information on factors that influence the prevalence of…”
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Immuno-fluorescence staining patterns of leukocyte subsets in the skin of taurine and indicine cattle by Constantinoiu, C.C., Jonsson, N.N., Jorgensen, W.K., Jackson, L.A., Piper, E.K., Lew-Tabor, A.E.

“…The immuno-staining patterns of skin leukocytes were investigated in three breeds of cattle: Holstein–Friesian, Brahman and Santa Gertrudis of similar age…”
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Clinical features associated with seroconversion to Anaplasma marginale, Babesia bigemina and Theileria parva infections in African cattle under natural tick challenge by Magona, J.W., Walubengo, J., Olaho-Mukani, W., Jonsson, N.N., Welburn, S.C., Eisler, M.C.

“…A longitudinal study was conducted in Southeast Uganda for 14 months on 640 Zebu cattle kept under natural tick challenge, with a view to identifying clinical…”
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