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Articles 1 - 6 of 6
Full-Text Articles in Medicine and Health Sciences
Biogeography Of The Bovine Respiratory Microbiome And Its Relationship With Bovine Respiratory Disease, Jianmin Chai
Biogeography Of The Bovine Respiratory Microbiome And Its Relationship With Bovine Respiratory Disease, Jianmin Chai
Graduate Theses and Dissertations
Bovine respiratory disease (BRD) is the most common and costly disease in the beef cattle industry, leading to high morbidity, mortality and huge economic loss. Despite the recent advances in vaccination and antimicrobial techniques, no significant health-improved outcomes have developed. Due to a deep investigation of the microbiome, respiratory microbiotas are known to have important roles for host health and disease. However, BRD specific pathogens have not yet been identified since they are found in both healthy and diseased animals. A systemic and comprehensive study of the biogeography of the bovine respiratory microbiome and its relationship with BRD is lacking …
The Surveillance Of Gastrointestinal Parasitic Nematodes Of Northwest Arkansas Dairy Cattle Using Traditional And Genetic Parasitological Identification Procedures, Eva M. Wray
Graduate Theses and Dissertations
Traditional and genetic parasitological identification procedures were compared using naturaland artificial nematode parasite infections in Holstein steer calves. The traditional parasitological procedures measured fecal egg counts, coprocultures with subsequent larval collection and adult nematodes collected at necropsy. The genetic identification procedures measured ITS-2 sequences extracted from different stages of nematode development: raw feces, concentrated nematode eggs, third stage larvae and adults. The primary nematodes observed were Cooperia oncophora, Cooperia punctata and Ostertagia ostertagi. The traditional techniques were not significantly different from one another, while the genetic sequencing showed variation amongst the different procedures. The raw feces sequences showed the most …
Associations Among Beef Cattle Genotypes, Neospora Caninum Infection, And Reproductive Performance, Ryan James Page
Associations Among Beef Cattle Genotypes, Neospora Caninum Infection, And Reproductive Performance, Ryan James Page
Graduate Theses and Dissertations
Reproductive performance is crucial for sustained financial success in the beef cattle industry. This dissertation includes a population study that quantified the incidence of Neospora caninum infections in the central region of the United States and tested its relationship with reproductive performance in beef cattle. Trial one of that study concluded that 6.9% of open, replacement heifers (n = 1306) tested seropositive. The second trial in that project found that 9.6% of the breeding age females (n = 500) tested were seropositive for Neospora caninum; and that state in which the cattle lived and age impacted (P < 0.05) infection rate. Breed composition, number of farm dogs on the ranch, and use of total mixed rations were not associated (P > 0.1) with seropositive …
Prevalence Of Gastrointestinal Parasitic Infections In Cattle And Sheep In Two Regions Ofromania, Catalin Bogdan Sirbu, Kalman Imre, Gheorghe Darabus, Tiana Suici, Bogdan Mates, Sorin Morariu
Prevalence Of Gastrointestinal Parasitic Infections In Cattle And Sheep In Two Regions Ofromania, Catalin Bogdan Sirbu, Kalman Imre, Gheorghe Darabus, Tiana Suici, Bogdan Mates, Sorin Morariu
Turkish Journal of Veterinary & Animal Sciences
Amongst ruminant livestock diseases, the gastrointestinal (GIT) helminths and protozoan parasite infections result in a significant socio-economic concern worldwide. During the period between October 2017 and November 2018, a total of 788 fresh fecal specimens from cattle (n = 303) and sheep (n = 485) were screened for the presence of gastrointestinal helminths and protozoan parasites in two historical regions (Crisana and Banat) of western Romania. Laboratory processing of fecal samples with the simple salt flotation (Willis) and sedimentation techniques, followed by microscopic analysis revealed that 86.1% of cattle and 92.6% of sheep were found to be positive for at …
Expression Profiles Of Lincrna And Mrna Related To Milk Yield And Milk Composition Traits In The Milk-Derived Exosomes Of Holstein And Doğu Anadolu Kırmızısı Cows, Selçuk Özdemi̇r, Ömer Eltas, Muhammed Hüdai̇ Çulha
Expression Profiles Of Lincrna And Mrna Related To Milk Yield And Milk Composition Traits In The Milk-Derived Exosomes Of Holstein And Doğu Anadolu Kırmızısı Cows, Selçuk Özdemi̇r, Ömer Eltas, Muhammed Hüdai̇ Çulha
Turkish Journal of Veterinary & Animal Sciences
This study aimed to demonstrate the expression profiles of lincRNAs and mRNAs affecting milk yield and composition traits in the milk-derived exosomes of Holstein and Doğu Anadolu Kırmızısı (DAK) cows. For this purpose, the locations of these specific lincRNAs and mRNAs were confirmed in quantitative trait loci. Then RT-PCR analysis was performed to identify the expression profiles of the lincRNAs and mRNAs. Lastly, correlation analysis was carried out between milk yield data from Holstein and DAK cows and expression levels of the lincRNAs and mRNAs. The findings showed that while lincRNAs and mRNAs associated with milk yield traits were upregulated …
Investigation Of Biotype, Genotype And Virulence Associated Genes Inpasteurella Multocida Capsular Type A Strains From The Respiratory Tract Of Cattle Andtheir Relationship With Disease Cases, Özgül Gülaydin, Kemal Gürtürk
Investigation Of Biotype, Genotype And Virulence Associated Genes Inpasteurella Multocida Capsular Type A Strains From The Respiratory Tract Of Cattle Andtheir Relationship With Disease Cases, Özgül Gülaydin, Kemal Gürtürk
Turkish Journal of Veterinary & Animal Sciences
Pasteurella (P.) multocida, which causes respiratory disease in cattle, can also be found commensally in the upper respiratory tract. Therefore, it is epidemiologically important to determine the possible difference between pathogenic and commensal strains for the diagnosis of the disease. In this study, phenotypic and genotypic characteristics and virulence associated genes of P. multocida capsular type A strains isolated from the respiratory tract of sick and healthy cattle were investigated. Also, the relationship between the disease status of animals and the characteristics of the isolates were evaluated. Total of 51 P. multocida capsular type A strains were biotyped and genotyped …