Search Results - "Guy, J.H."

Feed restriction and type of forage influence performance and behaviour of outdoor gestating sows by Aubé, L., Guay, F., Bergeron, R., Bélanger, G., Tremblay, G.F., Edwards, S.A., Guy, J.H., Devillers, N.

“…Forages can contribute to the nutrient supply for sows but the extent to which they can replace concentrate feeding is not well known. The objective of this…”
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Optimising oral fluid collection from groups of pigs: Effect of housing system and provision of ropes by Seddon, Y.M., Guy, J.H., Edwards, S.A.

“…The effective use of pooled oral fluid (OF) in disease surveillance requires that samples are representative of the group. The aim of this study was to develop…”
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Development of a spreadsheet based financial model for pig producers considering high welfare farrowing systems by Seddon, Y.M., Cain, P.J., Guy, J.H., Edwards, S.A.

“…This technical note describes the development of a novel spreadsheet-based financial simulation model that estimates the cost of pig production in five…”
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Repellence of plant essential oils to Dermanyssus gallinae and toxicity to the non-target invertebrate Tenebrio molitor by George, D.R., Sparagano, O.A.E., Port, G., Okello, E., Shiel, R.S., Guy, J.H.

“…With changes in legislation and consumer demand, alternatives to synthetic acaricides to manage the poultry red mite Dermanyssus gallinae (De Geer) in laying…”
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Mode of action and variability in efficacy of plant essential oils showing toxicity against the poultry red mite, Dermanyssus gallinae by George, D.R., Smith, T.J., Shiel, R.S., Sparagano, O.A.E., Guy, J.H.

“…This paper describes a series of experiments to examine the mode of action and toxicity of three plant essential oils (thyme, manuka and pennyroyal) to the…”
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Effect of plant essential oils as acaricides against the poultry red mite, Dermanyssus gallinae, with special focus on exposure time by George, D.R., Olatunji, G., Guy, J.H., Sparagano, O.A.E.

“…Essential oils from thyme and cade have been shown to be effective acaricides against the poultry red mite, Dermanyssus gallinae (De Geer) when tested over a…”
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In vitro and in vivo acaricidal activity and residual toxicity of spinosad to the poultry red mite, Dermanyssus gallinae by George, D.R., Shiel, R.S., Appleby, W.G.C., Knox, A., Guy, J.H.

“…This paper describes two experiments conducted to examine the acaricidal potential of spinosad against the poultry red mite, Dermanyssus gallinae (De Geer), a…”
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Longitudinal gait development and variability of growing pigs reared on three different floor types by Stavrakakis, S., Guy, J. H., Warlow, O. M. E., Johnson, G. R., Edwards, S. A.

“…Biomechanical investigation into locomotor pathology in commercial pigs is lacking despite this being a major concern for the industry. Different floor types…”
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Lack of prolonged activity of lavender essential oils as acaricides against the poultry red mite ( Dermanyssus gallinae) under laboratory conditions by George, D.R., Callaghan, K., Guy, J.H., Sparagano, O.A.E.

“…Managing the poultry red mite, Dermanyssus gallinae (De Geer) by conventional means (i.e., synthetic acaricides) has become increasingly problematic. As a…”
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The influence of ‘time since last blood meal’ on the toxicity of essential oils to the poultry red mite ( Dermanyssus gallinae) by George, D.R., Smith, T.J., Sparagano, O.A.E., Guy, J.H.

“…The poultry red mite, Dermanyssus gallinae (De Geer) is a serious ectoparasitic pest of layer hens that can survive for long periods in the poultry house…”
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Comparison of synthetic membranes in the development of an in vitro feeding system for Dermanyssus gallinae by Harrington, D W J, Guy, J H, Robinson, K, Sparagano, O A E

“…Although artificial feeding models for the poultry red mite (Dermanyssus gallinae) most frequently use biological membranes consisting of day-old chick skin,…”
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Comparison of in vivo and in vitro survival and fecundity rates of the poultry red mite, Dermanyssus gallinae by Arkle, S., George, D.R., Guy, J.H., Sparagano, O.A.E.

“…To assist in the testing of possible antigens in developing a vaccine against the poultry red mite ( Dermanyssus gallinae De Geer), a rapid and reliable in…”
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Postnatal changes in electromyographic signals during piglet growth, and in relation to muscle fibre types by Andersen, N.K., Ravn, L.S., Guy, J.H., Edwards, S.A., Harrison, A.P.

“…This study uses non-invasive evoked surface electromyography (SEMG) to investigate postnatal muscle development in pigs, and to assess any correlation between…”
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Effect of reducing dietary mineral content on growth performance, water intake, excreta dry matter content and blood parameters of broilers by Ziaei, N, Guy, J.H, Edwards, S.A, Blanchard, P.J, Ward, J, Feuerstein, D

“…1. The objective of this study was to investigate whether it is possible to reduce phosphorus (P) excretion by feeding a lower level of dietary P than that…”
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Which factor is more important: Intensity or duration of episodic heat stress on broiler chickens? by Iyasere, O.S., Bateson, M., Beard, A.P., Guy, J.H.

“…With the current global warming, there is a predicted increase in frequency, intensity and duration of heat waves in future. Little is known of how this could…”
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Corrigendum to “Which factor is more important for the welfare of broiler chickens: Intensity or duration of episodic heat stress?” [J. Therm. Biol. 99 (2021) 102981] by Iyasere, O.S., Bateson, M., Beard, A.P., Guy, J.H.

“…Due to the effects of global warming, there is a predicted increase in the frequency, intensity and duration of heat waves in the future. Little is known of…”
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Exploratory behaviour and performance of piglets fed novel flavoured creep in two housing systems by Adeleye, O.O., Guy, J.H., Edwards, S.A.

“…Creep feeding can improve growth and performance of piglets before and after weaning, especially if sow milk supply is reduced for any reason, but intake by…”
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Validation of an intramuscularly-implanted microchip and a surface infrared thermometer to estimate core body temperature in broiler chickens exposed to heat stress by Iyasere, O.S., Edwards, S.A., Bateson, M., Mitchell, M., Guy, J.H.

“…•A significant correlation between ΔCBT-chip and ΔCBT-logger (R=0.71, P<0.05) during the heat stress was established.•SBT measured under the wing correlated…”
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Walking kinematics of growing pigs associated with differences in musculoskeletal conformation, subjective gait score and osteochondrosis by Stavrakakis, S., Guy, J.H., Warlow, O.M.E., Johnson, G.R., Edwards, S.A.

“…Despite orthopaedic problems being a major concern for the pig industry, there is a lack of biomechanical, hence quantitative, investigation of locomotor…”
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Pre-clinical and clinical walking kinematics in female breeding pigs with lameness: A nested case-control cohort study by Stavrakakis, S., Guy, J.H., Syranidis, I., Johnson, G.R., Edwards, S.A.

“…•Gait kinematics of replacement gilts were evaluated before and during visually diagnosed lameness in a long-term study.•Relative, rather than absolute, gait…”
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