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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

The beta-toxin of Clostridium welchii type B, Wilsdon, in relation to the production of a vaccine against lamb dysentery

Jansen, Berend Cornelis January 1960 (has links)
Please read the abstract in page 85 of the document. / Thesis (DVSc)--University of Pretoria, 1960. / Paraclinical Sciences / DVSc / Unrestricted
12

Studies on the spring rise phenomenon in ovine helminthiasis.

Procter, Bryan George. January 1966 (has links)
Studies were conducted to determine some of the characteristics of the spring rise in faecal shedding of nematode ova by parasitized ewes in the Montreal area. [...]
13

Grass tetany of cattle in New South Wales

Elliott, Malcolm Gordon, University of Western Sydney, Hawkesbury, Faculty of Environmental Management and Agriculture January 2000 (has links)
Over the last 60 years, grass tetany has been recognised as a significant lethal condition in sheep and cattle.Outcomes from this study include documentation of the likely precursors to grass tetany, ways to recognise these precursors, and long term practices that will enable producers to minimise livestock deaths. The benefit of this research to beef producers is that the environmental circumstances thought to be associated with outbreaks of grass tetany have been identified, along with remedial action that can be taken to prevent deaths occurring.Recommendations to industry on best practice to be adopted by leading producers to minimise outbreaks of grass tetany are made.This study provides an alternate strategy for the management of grass tetany in beef cattle, to the more clinical approaches previously recommended. It is suggested that losses from this economically important metabolic disease can be minimised if management practices of beef cattle producers in eastern Australia can incorporate a more holistic approach to farm management, which takes account of the soil/plant/animal/climate inter-relationships. / Master of Science (Hons)
14

Investigation of disease associated prion protein in blood from sheep naturally infected with scrapie

Edwards, Jane C. January 2011 (has links)
No description available.
15

The pathophysiology of Sarcocystis tenella infections in specific-pathogen-free (sporozoa) sheep

Phillips, Peter Harry. January 1982 (has links) (PDF)
Some ill. mounted. Bibliography: leaves [473]-504.
16

Streptococcus dysgalactiae polyarthritis in lambs in England and Wales

Rutherford, Sarah-Jayne January 2011 (has links)
No description available.
17

Diagnóstico e caracterização molecular de Giardia duodenalis e Cryptosporidium spp. em amostras fecais de bovinos e ovinos

Silva, Flávio Medeiros Paz e [UNESP] 21 June 2007 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:24:45Z (GMT). No. of bitstreams: 0 Previous issue date: 2007-06-21Bitstream added on 2014-06-13T19:11:24Z : No. of bitstreams: 1 silva_fmp_me_botfmvz.pdf: 2999608 bytes, checksum: 16c0ff22e39cd5714270de54e0384c11 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / Os protozoários Giardia duodenalis e Cryptosporidium spp. são comprovadamente patógenos potenciais para bovinos e ovinos (particularmente em bezerros e cordeiros). Recentemente, o uso de técnicas moleculares demonstrou que Giardia duodenalis e Cryptosporidium spp. são espécies compostas de populações morfologicamente indistinguíveis, porém com grande diversidade genética. Os isolados de Giardia duodenalis obtidos de amostras fecais de ruminantes podem pertencer a grupos genéticos hospedeiro-específicos (genótipo E) ou a grupos genéticos potencialmente zoonóticos (genótipo A e B). Quatro espécies/genótipos de Cryptosporidium spp. com diferenças biológicas e genéticas consideráveis, são capazes de infectar bovinos: Cryptosporidium parvum, Cryptosporidium andersoni, Cryptosporidium bovis e Cryptosporidium genótipo deer-like. Em ovinos uma longa lista de espécies/genótipos tem sido identificados, alguns dos quais ainda são descritos como espécies/genótipos desconhecidos. O objetivo desse estudo foi determinar a ocorrência de Giardia duodenalis e Cryptosporidium spp. em 10 propriedades de bovinos leiteiros e 1 propriedade de ovinos no Estado de São Paulo, realizando o diagnóstico por meio das técnicas de microscopia óptica (Centrifugo-flutuação em sulfato de zinco modificada e coloração por fucsina carbólica modificada), Ensaio imunoenzimático (ELISA) e Reação em Cadeia da Polimerase (PCR); e caracterizando geneticamente esses protozoários com o emprego da técnica de polimorfismo no tamanho dos fragmentos de restrição (RFLP). A ocorrência de Giardia duodenalis e Cryptosporidium em 200 bovinos foi de 8 e 14%, respectivamente. O diagnóstico das infecções em bezerros foi significativamente maior do que em animais adultos. A técnica da PCR demonstrou uma sensibilidade diagnóstica superior quando comparada às técnicas de microscopia óptica e ensaio imunoenzimático. / Giardia duodenalis and Cryptosporidium spp. are protozoan organisms that can infect the intestinal tract of many animal species including mammals. Clinical signs reported in calves and lambs infected with theses parasites include dullness, lethargy, anorexia, fever, dehydration, gastritis, reduced milk yield and poor weight gain and therefore have a potential clinical and economic impact. Despite morphological uniformity, considerable biotypic and genetic diversity exists within the G. duodenalis and Cryptosporidium species. G. duodenalis is a species complex comprising at least seven major assemblages or genotypes (A, B, C, D, E, F and G). These assemblages, which differ from each other significantly, appear to have distinct host preferences or have a limited host range. Recent studies suggest that cattle are infected with at least four Cryptosporidium parasites: C. parvum, Cryptosporidium bovis, Cryptosporidium andersoni and the Cryptosporidium deer-like genotype . In sheep, however, most prevalence information is based on microscopy and thus there is little information on Cryptosporidium species or genotypes. This study was undertake to determine the occurrence of Giardia and Cryptosporidium infections in dairy cattle and sheep in São Paulo State, Brazil through the use of microscopy, Enzyme Immunoabsorbent assay (EIA) and Polymerase chain Reaction (PCR); and to determine the species/genotypes by PCR-RFLP. Ten dairy farms in Botucatu city region are sampled. At each farm, 20 specimens are randomly collected. Giardia and Cryptosporidium was identified in 80% and 90% of farm locations, respectively. Of the 200 specimens collected, 8% and 14% has Giardia and Cryptosporidium DNA, respectively. Most infections were Giardia duodenalis Assemblage E (87,5%) and Cryptosporidium andersoni (82%) which are not zoonotic; however, one calf was infected with zoonotic Giardia duodenalis Assemblage AII and another with B.
18

Studies on the replication of Nairobi sheep disease virus in cultured cells

Lasecka, Lidia January 2014 (has links)
No description available.
19

Diagnóstico e caracterização molecular de Giardia duodenalis e Cryptosporidium spp. em amostras fecais de bovinos e ovinos /

Silva, Flávio Medeiros Paz e. January 2007 (has links)
Resumo: Os protozoários Giardia duodenalis e Cryptosporidium spp. são comprovadamente patógenos potenciais para bovinos e ovinos (particularmente em bezerros e cordeiros). Recentemente, o uso de técnicas moleculares demonstrou que Giardia duodenalis e Cryptosporidium spp. são espécies compostas de populações morfologicamente indistinguíveis, porém com grande diversidade genética. Os isolados de Giardia duodenalis obtidos de amostras fecais de ruminantes podem pertencer a grupos genéticos hospedeiro-específicos (genótipo E) ou a grupos genéticos potencialmente zoonóticos (genótipo A e B). Quatro espécies/genótipos de Cryptosporidium spp. com diferenças biológicas e genéticas consideráveis, são capazes de infectar bovinos: Cryptosporidium parvum, Cryptosporidium andersoni, Cryptosporidium bovis e Cryptosporidium genótipo deer-like. Em ovinos uma longa lista de espécies/genótipos tem sido identificados, alguns dos quais ainda são descritos como espécies/genótipos desconhecidos. O objetivo desse estudo foi determinar a ocorrência de Giardia duodenalis e Cryptosporidium spp. em 10 propriedades de bovinos leiteiros e 1 propriedade de ovinos no Estado de São Paulo, realizando o diagnóstico por meio das técnicas de microscopia óptica (Centrifugo-flutuação em sulfato de zinco modificada e coloração por fucsina carbólica modificada), Ensaio imunoenzimático (ELISA) e Reação em Cadeia da Polimerase (PCR); e caracterizando geneticamente esses protozoários com o emprego da técnica de polimorfismo no tamanho dos fragmentos de restrição (RFLP). A ocorrência de Giardia duodenalis e Cryptosporidium em 200 bovinos foi de 8 e 14%, respectivamente. O diagnóstico das infecções em bezerros foi significativamente maior do que em animais adultos. A técnica da PCR demonstrou uma sensibilidade diagnóstica superior quando comparada às técnicas de microscopia óptica e ensaio imunoenzimático. / Abstract: Giardia duodenalis and Cryptosporidium spp. are protozoan organisms that can infect the intestinal tract of many animal species including mammals. Clinical signs reported in calves and lambs infected with theses parasites include dullness, lethargy, anorexia, fever, dehydration, gastritis, reduced milk yield and poor weight gain and therefore have a potential clinical and economic impact. Despite morphological uniformity, considerable biotypic and genetic diversity exists within the G. duodenalis and Cryptosporidium species. G. duodenalis is a species complex comprising at least seven major assemblages or genotypes (A, B, C, D, E, F and G). These assemblages, which differ from each other significantly, appear to have distinct host preferences or have a limited host range. Recent studies suggest that cattle are infected with at least four Cryptosporidium parasites: C. parvum, Cryptosporidium bovis, Cryptosporidium andersoni and the Cryptosporidium deer-like genotype . In sheep, however, most prevalence information is based on microscopy and thus there is little information on Cryptosporidium species or genotypes. This study was undertake to determine the occurrence of Giardia and Cryptosporidium infections in dairy cattle and sheep in São Paulo State, Brazil through the use of microscopy, Enzyme Immunoabsorbent assay (EIA) and Polymerase chain Reaction (PCR); and to determine the species/genotypes by PCR-RFLP. Ten dairy farms in Botucatu city region are sampled. At each farm, 20 specimens are randomly collected. Giardia and Cryptosporidium was identified in 80% and 90% of farm locations, respectively. Of the 200 specimens collected, 8% and 14% has Giardia and Cryptosporidium DNA, respectively. Most infections were Giardia duodenalis Assemblage E (87,5%) and Cryptosporidium andersoni (82%) which are not zoonotic; however, one calf was infected with zoonotic Giardia duodenalis Assemblage AII and another with B. / Orientador: João Pessoa Araújo Júnior / Coorientador: Raimundo Souza Lopes / Banca: Alessandro Francisco Talamini do Amarante / Banca: Katia Denise Saraiva Bresciani / Mestre
20

Clinical-pathological and endocrine changes in the serum of ewes aborting due to Listeria monocytogenes

Carter, James L January 2011 (has links)
Digitized by Kansas Correctional Industries

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