The Experts below are selected from a list of 18 Experts worldwide ranked by ideXlab platform
Lewis, Colin A - One of the best experts on this subject based on the ideXlab platform.
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Recognition and development of the Irish Draught horse
The Collins Press Cork Ireland, 2005Co-Authors: Lewis, Colin AAbstract:The number of horses in Ireland had shown remarkable consistency from 1861 until just before 1951. Between the end of the Second World War and 1951 there was a rapid decrease in the number of working horses, and the rate of the decrease accelerated during the decade of the 1950s and the early 1960s. Throughout the 1960s popular emphasis was placed on mechanisation, as if there were no role for the horse as a working animal. Even the production of pleasure horses seems to have been initially regarded as of little value. The 1970s were a sad period for both light and heavy Draught horses in County Cork, as in the rest of Ireland. With increased mechanisation, the market for heavy Draught animals which had previously dominated transport in the city of Cork, came to an end. There was a great danger that the Irish Draught would soon become extinct, so the formation of the Irish Draught Horse Society in 1976 was of great importance for the development of the Irish Draught as a breed. In 1982 this society published the "Breed Standard and Guideline", the first time that an official standard had been published for an Irish Draught. Despite various schemes during the 1980s and 1990s designed to increase the number and improve the quality of the Irish Draught horse population, it is, at the beginning of the 21st Century, one of the world's endangered breeds
Alan Wilson - One of the best experts on this subject based on the ideXlab platform.
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relationship of foot conformation and force applied to the navicular bone of sound horses at the trot
Equine Veterinary Journal, 2010Co-Authors: E Eliashar, M. P. Mcguigan, Alan WilsonAbstract:Summary Reasons for performing study: Collapsed heels conformation has been implicated as causing radical biomechanical alterations, predisposing horses to navicular disease. However, the correlation between hoof conformation and the forces exerted on the navicular bone has not been documented. Hypothesis: The angle of the distal phalanx in relation to the ground is correlated to the degree of heel collapse and foot conformation is correlated to the compressive force exerted by the deep digital flexor tendon on the navicular bone. Methods: Thirty-one shod Irish Draught-cross type horses in routine work and farriery care were trotted over a forceplate, with 3-dimensional (3D) motion analysis system. A lateromedial radiograph of the right fore foot was obtained for each horse, and various measurements taken. Correlation coefficients were determined between hoof conformation measurements and between each of these and the force parameters at the beginning (15%) of stance phase, the middle of stance (50%) and at the beginning of breakover (86% of stance phase). Significance was defined as P<0.05. Results: The force exerted on the navicular bone was negatively correlated (P<0.05) to the angle of the distal phalanx to the ground and to the ratio between heel and toe height. This was attributed to a smaller extending moment at the distal interphalangeal joint. There was not a significant correlation between the angle of the distal phalanx and the degree of heel collapse, and heel collapse was not significantly correlated to any of the force parameters. Conclusions: Hoof conformation has a marked correlation to the forces applied to the equine foot. Heel collapse, as defined by the change in heel angle in relation to toe angle, appears to be an inaccurate parameter. The forces applied on the foot are well correlated to the changes in the ratio of heel to toe heights and the angles of the distal phalanx. Potential relevance: Assessment of hoof conformation should be judged based on these parameters, as they may have clinical significance, whereas parallelism of the heel and toe is of less importance.
Hill E. W. - One of the best experts on this subject based on the ideXlab platform.
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Mitochondrial DNA sequence diversity in extant Irish horse populations and in ancient horses
'Wiley', 2006Co-Authors: Mcgahern A. M., Edwards, Ceiridwen J., Bower M. A., Heffernan A., Park S. D. E., Brophy P. O., Bradley D. G., Machugh D. E., Hill E. W.Abstract:Equine mitochondrial DNA sequence variation was investigated in three indigenous Irish horse populations (Irish Draught Horse, Kerry Bog Pony and Connemara Pony) and, for context, in 69 other horse populations. There was no evidence of Irish Draught Horse or Connemara Pony sequence clustering, although the majority of Irish Draught Horse sequences (47%) were assigned to haplogroup D. Conversely, 31% of the Kerry Bog Pony sequences were assigned to the rare haplogroup E. In addition to the extant population analyses, ancient DNA sequences were generated from three out of four Irish archaeological specimens, all of which were assigned to haplogroup A
E Eliashar - One of the best experts on this subject based on the ideXlab platform.
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relationship of foot conformation and force applied to the navicular bone of sound horses at the trot
Equine Veterinary Journal, 2010Co-Authors: E Eliashar, M. P. Mcguigan, Alan WilsonAbstract:Summary Reasons for performing study: Collapsed heels conformation has been implicated as causing radical biomechanical alterations, predisposing horses to navicular disease. However, the correlation between hoof conformation and the forces exerted on the navicular bone has not been documented. Hypothesis: The angle of the distal phalanx in relation to the ground is correlated to the degree of heel collapse and foot conformation is correlated to the compressive force exerted by the deep digital flexor tendon on the navicular bone. Methods: Thirty-one shod Irish Draught-cross type horses in routine work and farriery care were trotted over a forceplate, with 3-dimensional (3D) motion analysis system. A lateromedial radiograph of the right fore foot was obtained for each horse, and various measurements taken. Correlation coefficients were determined between hoof conformation measurements and between each of these and the force parameters at the beginning (15%) of stance phase, the middle of stance (50%) and at the beginning of breakover (86% of stance phase). Significance was defined as P<0.05. Results: The force exerted on the navicular bone was negatively correlated (P<0.05) to the angle of the distal phalanx to the ground and to the ratio between heel and toe height. This was attributed to a smaller extending moment at the distal interphalangeal joint. There was not a significant correlation between the angle of the distal phalanx and the degree of heel collapse, and heel collapse was not significantly correlated to any of the force parameters. Conclusions: Hoof conformation has a marked correlation to the forces applied to the equine foot. Heel collapse, as defined by the change in heel angle in relation to toe angle, appears to be an inaccurate parameter. The forces applied on the foot are well correlated to the changes in the ratio of heel to toe heights and the angles of the distal phalanx. Potential relevance: Assessment of hoof conformation should be judged based on these parameters, as they may have clinical significance, whereas parallelism of the heel and toe is of less importance.
Derek C Knottenbelt - One of the best experts on this subject based on the ideXlab platform.
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the clinical presentation of a mid tail melanocytoma with sudden malignant transformation in a bay Irish Draught gelding
Equine Veterinary Education, 2013Co-Authors: L A Poore, J R Rest, Derek C KnottenbeltAbstract:Summary Equine melanocytic tumours may be either a benign or malignant skin disease. They commonly involve the skin of grey horses. There are no reports of mid-tail melanocytoma with sudden malignant transformation. Partial tail amputation was used to resect a melanocytic tumour mass from the mid-tail of a 16-year-old bay Irish Draught (ID) horse. There was no evidence of significant re-growth or complications at a 6-month post operative examination.
