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Browsing by UP Author "Groenewald, Hermanus B."
Now showing items 1-20 of 29
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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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Groenewald, Hermanus B.; Booth, Kenneth Kurt; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute., 1992)Homozygous grey Karakul lambs are born with a lethal genetic factor responsible for death at weaning age. When put in a high roughage diet under field conditions they develop distended, thin-walled rumens and sand impacted ...
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Groenewald, Hermanus B.; Booth, Kenneth Kurt; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute., 1992)Homozygous grey Karakul lambs are born with a lethal genetic factor responsible for death at weaning age. When put on a high roughage diet under field conditions they develop distended, thinwalled rumens and sand impacted ...
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Havenga, Lauren; Naidoo, Vinny; Wolter, Kerri; Duncan, N.M. (Neil); Groenewald, Hermanus B. (Wiley, 2020-11)Diclofenac has been responsible for the deaths of millions of vultures on the Asian subcontinent. While the pathology of toxicity is well described, the mechanism of toxicity remains elusive. However, it was postulated ...
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Bello, Umar M.; Madekurozwa, Mary-Catherine; Groenewald, Hermanus B.; Aire, Tom A.; Arukwe, Augustine (Elsevier, 2014-11)In the present study, we have investigated the effects of 30-day dietary (pre-pubertal) exposure to different doses (0 (control), 1, 10, 50, 200 and 400 mg/kg bodyweight/day) of di(n-butyl) phthalate (DBP) on Leydig cells ...
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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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Moore, Brandon C.; Groenewald, Hermanus B.; Myburgh, Jan G. (Sociedade Brasileira de Herpetologia, 2020-08)The male crocodylian phallus, an intromittent organ, transfers sperm to the female cloaca during reproduction. During copulation, the distal phallic glans inflates via blood-filled spongiform tissues; it enlarges into an ...
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Kimaro, Wahabu Hamisi; Madekurozwa, Mary-Catherine; Groenewald, Hermanus B. (AOSIS Open Journals, 2013-07-19)The study investigated the effect of various doses of carbendazim on the morphology of the magnum of the Japanese quail. No morphological changes were observed in the magnum in birds treated with carbendazim at doses of ...
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Van Wilpe, Erna; Groenewald, Hermanus B. (Wiley-Blackwell, 2014-01)The morphology of Kupffer cells was examined in the liver of the juvenile Nile crocodile using light microscopy and transmission electron microscopy. Pleomorphic Kupffer cells were located in the sinusoids, in the space ...
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Martins, Antonio F.; Bennett, Nigel Charles; Clavel, Sylvie; Groenewald, Hermanus B.; Hensman, Sean; Hoby, Stefan; Joris, Antoine; Manger, Paul R.; Milinkovitch, Michel C. (Nature Publising Group, 2018-10-02)An intricate network of crevices adorns the skin surface of the African bush elephant, Loxodonta africana. These micrometre-wide channels enhance the effectiveness of thermal regulation (by water retention) as well as ...
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Groenewald, Hermanus B.; Elias, M.Z.J. (Mario Zefanias Joao); Bezuidenhout, A.J. (Abraham Johannes), 1942-; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1996)The branching pattern of the Aa. carotes internae and the macroscopic blood supply to the hypophysis and hypothalamus of the ostrich were studied on ten dissected acrylic vascular-injected heads and ten corrosion ...
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Morphological changes associated with Nile crocodile (Crocodylus niloticus) phallic glans inflation Moore, Brandon C.; Francis, Rachel; Foster, Adam; Kelly, Diane A.; Does, Mark; Kim, Dong K.; Groenewald, Hermanus B.; Myburgh, Jan G. (Wiley, 2020-06)The crocodylian phallic glans is the distal inflatable structure that makes the most direct contact with the female cloacal and associated reproductive tract openings during copulation. Therefore, its form and function ...
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Groenewald, Hermanus B.; Swan, Gerry E.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute ., 2000)Morphological changes associated with rumino-reticular development was compared in two groups of SA Mutton Merino lambs ( n=12) fed different diets at 3-5 weeks, 17-19 weeks and 31-33 weeks of age. Diet groups ...
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The morphological characteristics of the antebrachiocarpal joint of the cheetah (Acinonyx jubatus) Groenewald, Hermanus B.; Ohale, L.O.C.; 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)A morphological study of the structures of the antebrachiocarpal (AC) joint of the cheetah was carried out by dissection of eight forelimbs obtained from four adult cheetahs culled from the Kruger National Park, Republic ...
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Hartman, Marthinus Jacobus; Groenewald, Hermanus B.; Kirberger, Robert M. (Wiley, 2013-10)The topography and splanchnology of the reproductive organs of the African lioness were studied and described in situ and after removal. The kidneys were located far caudally in relation to the thirteenth ribs. The suspensory ...
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Makungu, Modesta; Du Plessis, Wencke M.; Groenewald, Hermanus B.; Barrows, Michelle; Koeppel, Katja Natalie (Wiley, 2015-12)The red panda (Ailurus fulgens) is a quadrupedal arboreal animal primarily distributed in the Himalayas and southern China. It is a species commonly kept in zoological collections. This study was carried out to describe ...
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Groenewald, Hermanus B.; Verwoerd, Daniel Wynand (Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1994)Previous studies indicated large, thin-walled, milk-filled rumens in lethal grey and white Karakul lambs. There was also a significant decrease in the number and size of the myenteric plexuses and the number of ganglion ...
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Makungu, Modesta; Groenewald, Hermanus B.; Du Plessis, Wencke M.; Barrows, Michelle; Koeppel, Katja Natalie (Wiley-Blackwell, 2014-06)In family Lemuridae, anatomical variations exist. Considering its conservation status (near threatened) and presence of similarities between strepsirrhines and primitive animals, it was thought to be beneficial to describe ...
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Makungu, Modesta; Du Plessis, Wencke M.; Barrows, Michelle; Koeppel, Katja Natalie; Groenewald, Hermanus B. (American Association of Zoo Veterinarians, 2013)An intact adult male 14.3-yr-old red panda (Ailurus fulgens) presented for health examination with a history of slowly progressing loss of body condition. Abdominal radiographs revealed a truncated abdomen with poor ...
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Makungu, Modesta; Du Plessis, Wencke M.; Barrows, Michelle; Groenewald, Hermanus B.; Koeppel, Katja Natalie (Wiley-Blackwell, 2014-06)BACKGROUND : The ring-tailed lemur (Lemur catta) is a quadruped arboreal primate primarily distributed in south and south-western Madagascar. This study was carried out to describe the normal radiographic thoracic ...
Now showing items 1-20 of 29