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677 results on '"Bowman, Dwight D."'

152. Parasitologia Veterinária de Georgis

Author

Bowman, Dwight D., Sudré, Adriana Pittella, Bowman, Dwight D., and Sudré, Adriana Pittella

Subjects
Veterinary parasitology
Abstract

ABRANGENTE, PRÁTICA E ADMIRAVELMENTE ILUSTRADA. Esta é a única referência em parasitologia que você precisa ter!Reconhecido por sua meticulosa atenção aos detalhes, Georgis Parasitologia Veterinária fornece informação atualizada e completa sobre todos os parasitas comumente encontrados na Medicina Veterinária, assim como informação sobre parasitas raros ou de menor importância. O autor apresenta discussões sobre artrópodes, protozoários e helmintos da Veterinária, incluindo a taxonomia e os ciclos biológicos, bem como sinais clínicos, diagnóstico e tratamento de cada infecção ou infestação parasitária.

Published
2010

153. Genetic diversity of Haemonchus contortus isolated from sympatric wild blue sheep (Pseudois nayaur) and sheep in Helan Mountains, China.

Author

Dong-dong Shen, Ji-fei Wang, Dan-yu Zhang, Zhi-wei Peng, Tian-yun Yang, Zhao-ding Wang, Bowman, Dwight D., Zhi-jun Hou, and Zhen-sheng Liu

Subjects
VETERINARY pathology, NEMATODE infections, HAEMONCHUS contortus, BHARAL, SHEEP diseases
Abstract

Background: Haemonchus contortus is known among parasitic nematodes as one of the major veterinary pathogens of small ruminants and results in great economic losses worldwide. Human activities, such as the sympatric grazing of wild with domestic animals, may place susceptible wildlife hosts at risk of increased prevalence and infection intensity with this common small ruminant parasite. Studies on phylogenetic factors of H. contortus should assist in defining the amount of the impact of anthropogenic factors on the extent of sharing of agents such as this nematode between domestic animals and wildlife. Methods: H. contortus specimens (n = 57) were isolated from wild blue sheep (Pseudois nayaur) inhabiting Helan Mountains (HM), China and additional H. contortus specimens (n = 20) were isolated from domestic sheep that were grazed near the natural habitat of the blue sheep. Complete ITS2 (second internal transcribed spacer) sequences and partial sequences of the nad4 (nicotinamide dehydrogenase subunit 4 gene) gene were amplified to determine the sequence variations and population genetic diversities between these two populations. Also, 142 nad4 haplotype sequences of H. contortus from seven other geographical regions of China were retrieved from database to further examine the H. contortus population structure. Results: Sequence analysis revealed 10 genotypes (ITS2) and 73 haplotypes (nad4) among the 77 specimens, with nucleotide diversities of 0.007 and 0.021, respectively, similar to previous studies in other countries, such as Pakistan, Malaysia and Yemen. Phylogenetic analyses (BI, MP, NJ) of nad4 sequences showed that there were no noticeable boundaries among H. contortus populations from different geographical origin and population genetic analyses revealed that most of the variation (94.21%) occurred within H. contortus populations. All phylogenetic analyses indicated that there was little genetic differentiation but a high degree of gene flow among the H. contortus populations among wild blue sheep and domestic ruminants in China. Conclusions: The current work is the first genetic characterization of H. contortus isolated from wild blue sheep in the Helan Mountains region. The results revealed a low genetic differentiation and high degree of gene flow between the H. contortus populations from sympatric wild blue sheep and domestic sheep, indicating regular crossinfection between the sympatrically reared ruminants. [ABSTRACT FROM AUTHOR]

Published
2017
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154. Parasite Management Programs for Small Ruminants

Author

Smith, Mary C., Bowman, Dwight D., and Frongillo, Marguerite K.

Subjects
Veterinary medicine, Body condition score, Anemia, fungi, medicine, Parasite hosting, Small ruminant, Parasite Control, Biology, medicine.disease, Egg count, Lungworm, Feces
Abstract

Implementation of effective parasite control programs in small ruminants requires the ability to monitor live animals for anemia and body condition score. The effectiveness of the program and of the drugs being used can be further monitored by qualitative and quantitative fecal examinations and fecal egg count reduction tests. Additional tests that may be needed occasionally are the Baermann for collection of lungworm larvae from the feces and larval culture to identify the species of strongyles that are present, especially when resistance has developed., American Association of Bovine Practitioners Proceedings of the Annual Conference, 2005

Published
2005
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167. Georgis' Parasitology for Veterinarians

Author

Bowman, Dwight D. and Bowman, Dwight D.

Subjects
Veterinary parasitology
Abstract

Now in full color, this comprehensive reference provides current information on all parasites commonly encountered in veterinary medicine. Its primary focus is on parasites that infect major domestic species, such as dogs, cats, horses. pigs, and ruminants. This edition also covers organisms that infect poultry, laboratory animals, and exotic species. And with this book's coverage of minor and rare parasites, you'll be able to diagnose more difficult cases. No other book in this market is so respected and so complete. It's the only parasitology reference that provides everything you'll need!Thorough coverage describes parasites that infect most major domestic species, and also includes organisms that infect poultry, lab animals and exotic species. A convenient appendix includes six drug tables listing parasiticides by species and a table of commercial antiparasitic vaccines, for easy access to the most up-to-date drug information. Greek and Latin roots of terms are arranged alphabetically on the inside front and back covers, providing a quick reference when you're in a hurry. Over 800 full-color photos and line drawings help you identify parasites accurately.A new introductory chapter provides an overview of parsitology. A new Vector-borne Diseases chapter restates viruses, rickettsiae and other bacteria, protozoa, and helminths in terms of vectors.

Published
2008

169. Quantitative factors proposed to influence the prevalence of canine tick-borne disease agents in the United States

Author

Stich, Roger W, primary, Blagburn, Byron L, additional, Bowman, Dwight D, additional, Carpenter, Christopher, additional, Cortinas, M, additional, Ewing, Sidney A, additional, Foley, Desmond, additional, Foley, Janet E, additional, Gaff, Holly, additional, Hickling, Graham J, additional, Lash, R, additional, Little, Susan E, additional, Lund, Catherine, additional, Lund, Robert, additional, Mather, Thomas N, additional, Needham, Glen R, additional, Nicholson, William L, additional, Sharp, Julia, additional, Varela-Stokes, Andrea, additional, and Wang, Dongmei, additional

Published
2014
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173. Enzyme-linked immunosorbent assay using a crude antigen extract to measure Cuterebra-specific immunoglobulin G in sera of cats with systemic infections

Author

Davis, Lillie L., primary, Puozzo, Aude, additional, Vitalo, Danielle C., additional, Ghazala, Zena, additional, Zhuo, Sharon Y., additional, Robinson, Lane, additional, Jeong, Esther, additional, Mohammed, Hussni O., additional, Liotta, Janice L., additional, Jacquiet, Philippe, additional, and Bowman, Dwight D., additional

Published
2013
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175. Conjunctival habronemiasis in a square-lipped rhinoceros ( Ceratotherium simum).

Author

Horowitz, Igal H., Dubielzig, Richard R., Botero‐Anug, Ana‐Maria, Lucio‐Forster, Araceli, Bowman, Dwight D., Rosenzweig, Ariella B., Frenkel, Shahar, and Ofri, Ron

Subjects
CONJUNCTIVITIS, CONJUNCTIVITIS treatment, WHITE rhinoceros, STEROID drugs, ANTIBIOTICS, VETERINARY ophthalmology, DIAGNOSIS
Abstract

A captive female square-lipped rhinoceros born in 1993 had been showing intermittent signs of bilateral conjunctivitis and conjunctival proliferation since 1998. Periodic improvement was noted, especially in winter, but overall the condition had deteriorated over the years. Treatment with various topical, intralesional, and systemic antibiotics and glucocorticosteroids was largely ineffective, as were repeated dewormings. No primary cause for these lesions was found in biopsies taken in 2000 and 2006, although a severe infiltrate of numerous eosinophils was observed in the latter. As the condition worsened, secondary corneal changes were noted, and eventually vision was lost due to proliferative conjunctival tissue. Aggressive resection of the proliferating tissue in 2013 restored vision and submitted biopsies yielded a diagnosis of severe allergic conjunctivitis, eosinophilic granuloma, and habronematid ( Habronema or Draschia) larval infection. As no other rhinoceros in the herd was affected, including two calves born to the patient who were in close contact with their mother, it was concluded the presentation was most likely due to a hypersensitivity reaction to the dead or dying larvae. Fly repellent is now regularly applied around the eye of this rhinoceros, and a protective face mask has been fitted. Ongoing periodic relapses are treated with oral ivermectin, topical antibiotics, and steroids. [ABSTRACT FROM AUTHOR]

Published
2016
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182. Enzyme-linked immunosorbent assays for coproantigen detection of Ancylostoma caninumand Toxocara canisin dogs and Toxocara catiin cats

Author

Elsemore, David A., Geng, Jinming, Cote, Jennifer, Hanna, Rita, Lucio-Forster, Araceli, and Bowman, Dwight D.

Abstract

We report the development and field validation of 2 ELISAs for the detection of Ancylostoma caninumor Toxocara caniscoproantigens in the feces of dogs with experimental and natural infections, and evidence of cross-reactivity with respective feline counterparts. A. caninum–specific coproantigens were detected in feces of experimentally infected dogs starting at 9 d post-infection (dpi), whereas eggs were not seen until 23 dpi. T. canis–specific coproantigens were detected in 3 of 5 experimentally infected dogs by 31 dpi, and 4 of the 5 animals by 38 dpi. T. caniseggs were seen in feces of 4 of the 5 animals by 38 dpi. One dog had delayed coproantigen detection and low egg output. Additionally, 817 canine and 183 feline fecal samples from naturally infected animals tested by flotation were subjected to coproantigen ELISA testing. Of these 1,000 canine and feline samples, 13 and 23 samples, respectively, were positive for “hookworm” or “roundworm” eggs; 19 and 26 samples were ELISA positive, respectively. The T. canisELISA detected T. caticoproantigen in cat fecal samples. Discrepant ELISA and flotation results were obtained for 16 hookworm- and 13 roundworm-positive samples. Re-examination of the egg-positive, ELISA-negative samples indicated several instances of possible misidentification or coprophagy, whereas detection of antigen in samples without egg observations is likely a reflection of true infection status with egg shedding below detection levels. There is good indication, based on accumulated field data, that these antigen tests also detect other hookworm and ascarid species.

Published
2017
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195. Prevalence of intestinal parasites in pet dogs in the United States

Author

Little, Susan E., primary, Johnson, Eileen M., additional, Lewis, David, additional, Jaklitsch, Renee P., additional, Payton, Mark E., additional, Blagburn, Byron L., additional, Bowman, Dwight D., additional, Moroff, Scott, additional, Tams, Todd, additional, Rich, Lon, additional, and Aucoin, David, additional

Published
2009
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