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Browsing by UP Author "Soley, John Thomson"
Now showing items 1-20 of 48
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Du Plessis, Lizette; Soley, John Thomson (Elsevier, 2012-04)Abaxial tail implantation is a defect occurring in the neck region of spermatozoa and is characterized by misalignment of the centriolar complex relative to the head base. This defect has been described in a number of ...
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Groenewald, Hermanus B.; Soley, John Thomson; Bezuidenhout, A.J. (Abraham Johannes), 1942-; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1999)An accurate description of the number, location and relative position of the air sacs and their diverticula in the ostrich is essential for a better understanding of the pathogenesis of air sacculitis in this bird. The ...
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Crole, Martina Rachel; Soley, John Thomson (Wiley, 2017-09)A specialized region of the bill tip characterized by a complex arrangement of mechanoreceptors and referred to as a bill tip organ, has been identified in numerous avians. A bill tip organ was initially inferred in kiwi ...
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Crole, Martina Rachel; Soley, John Thomson (Wiley, 2014-07)Herbst corpuscles are widely distributed throughout the oropharynx of the ostrich and emu in contrast to the general situation in birds. Knowledge of the comparative distribution of Herbst corpuscles in the oropharynx of ...
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A comparative overview of the sperm centriolar complex in mammals and birds : variations on a theme Soley, John Thomson (Elsevier, 2016-06)This paper presents an overview of the structure, function and anomalies of the sperm centriolar complex (CC) on a comparative basis between mammals and birds. The information is based on selected references from the ...
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Crole, Martina Rachel; Soley, John Thomson (Springer, 2015-09)This study, facilitated by the use of immunohistochemistry, indicated the presence of taste buds in Dromaius novaehollandiae but not in Struthio camelus. Seen at the light microscope level, the taste buds consisted of ...
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Stansfield, Fiona Jane; Nothling, Johan Oliviette; Soley, John Thomson; Allen, William R. (Society for Reproduction and Fertility, 2012-11)The follicular reserve and its ontogeny in the elephant are of interest because elephants have the longest reproductive life of all land-based mammals. They also have the longest recorded pregnancy which allows a protracted ...
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Crole, Martina Rachel; Soley, John Thomson (Wiley-Blackwell, 2011-07)The glandular regions of the upper digestive tract in the emu were non-pigmented (except for the tongue in most specimens) and invested by a non-keratinised stratified squamous epithelium. The glands found in these ...
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Botha, Alma Ester; Schulman, M.L. (Martin); Birrell, John R.; Du Plessis, Lizette; Laver, Pete N.; Soley, John Thomson; Colenbrander, Ben; Bertschinger, Hendrik Jan (Wiley, 2022-08)The effects of the GnRH vaccine Improvac® on testicular and epididymal morphometrics, histology and spermatogenesis were measured in 19 young (15–20 months) colts randomly assigned to one control (saline, castration at 57 ...
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Crole, Martina Rachel; Soley, John Thomson (BioMed Central, 2013-08-21)BACKGROUND: Tonsils are secondary lymphoid organs located in the naso- and oropharynx of most mammalian species. Most tonsils are characterised by crypts surrounded by dense lymphoid tissue. However, tonsils without crypts ...
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Soley, John Thomson; Putterill, John Fraser; Boomker, Jacob Diederik Frederik (Published jointly by the Agricultural Research Council, ARC-Onderstepoort Veterinary Institute and the Faculty of Veterinary Science, University of Pretoria., 2003)The heads of nine 2.5 to 3-year-old Nile crocodiles (Crocodylus niloticus) were obtained from a commercial farm where crocodiles are raised for their skins and meat. The animals from which these specimens originated were ...
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Birgfellner, Caroline Maria Victoria; Soley, John Thomson; Polsterer, Eva; Forstenpointner, Gerhard; Weissengruber, Gerald Erwin (Wiley, 2023-03)In this study, we present not only a new and detailed anatomical description of the epaxial muscles and adjacent ligamentous and fascial structures in the African sa-vanna elephant but also a ...
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Tivane, Catarina; Rodrigues, Marcio N.; Soley, John Thomson; Groenewald, Hermanus B. (Colégio Brasileiro de Patologia Animal, 2011-06)Most descriptions of the ostrich oropharynx and oesophagus are superficial and supply little meaningful morphological data. The aim of this investigation is describe the ostrich oropharingeal cavity, in order to supply ...
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Crole, Martina Rachel; Soley, John Thomson (Springer, 2012-09)The tongue body of Rhea americana is triangular and partially pigmented with each caudo-lateral margin displaying a round, sub-divided lingual papilla. The tongue root is a smooth, non-pigmented tract of mucosa. The ...
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Soley, John Thomson; Tivane, Catarina; Crole, Martina Rachel (Wiley, 2015-10)The ostrich hyobranchial apparatus consists of the centrally positioned paraglossalia and basiurohyale and paired caudo-lateral elements (horns), each consisting of the ceratobranchiale and epibranchiale. The paraglossalia ...
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Du Plessis, Lizette; Soley, John Thomson (Elsevier, 2011-10)The accurate assessment of avian sperm abnormalities is hampered by a lack of descriptive data and by the confusing terminology currently in use. Critical appraisal of semen samples from the distal ductus deferens of the ...
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Schmidt, Susanne; Gerber, David; Soley, John Thomson; Aire, Tom A.; Boos, A. (Elsevier, 2006-08)Differences exist in reproductive physiology between African buffalo (Syncerus caffer), cattle (Bos taurus) and water buffalo (Bubalus bubalis). The aim of this study was to histo-morphologically compare the anatomy of ...
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Du Plessis, Lizette; Soley, John Thomson (Elsevier, 2011-03)Little detailed information is currently available on the incidence and morphological characteristics of abnormal sperm in the emu (Dromaius novaehollandiae) and of ratites in general. This situation is further compounded ...
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Crole, Martina Rachel; Soley, John Thomson; Clift, Sarah Jane (OpenJournals Publishing, 2013-10-30)Avian mycobacteriosis (AM) is a zoonotic disease caused by Mycobacterium avium complex (MAC), which can spread from avians to other farmed animals such as cattle and pigs as well as to humans. This study is the first ...
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Soley, John Thomson; Newsholme, S.J.; Kellerman, T. Stephanus; Van der Westhuizen, G.C.A.; Bigalke, R.D. (Published by The Government Printer, Pretoria, 1983)Clinical features and pathological and mycological findings in a field outbreak of intoxication in dairy cattle grazing kikuyu grass are reported. The outbreak followed invasion of the grass by the army worm (Spodoptera ...
Now showing items 1-20 of 48