The frequency of Marek's disease in broiler chickens as measured by gross evidence of tumors at processing differs markedly among flocks and between poultry farm origin. Organs affected in broilers, in order of frequency of tumors, were proventriculus (57.6%), spleen (42.3%), kidney (30.6%), lung (19.1%), liver (15.3%), gonads (12.3%), heart (7.6%). Virus isolations were performed on samples from three broiler flocks to examine the possibility that such differences in MD incidence were causally related to differences in the frequency of naturally occurring, nononcogenic serotype 2MD virus infection. Serotype 2 virus was isolated from two flocks. MD condemnations were lower in two serotype-2 infected flocks (V1) than in the third one serotype 1 and serotype 2 positive flock (Mh). Thus, these data suggest a strong positive association between MD losses, housing and a weak probable negative association between serotype 2 virus and MD losses in broilers. However, low level of leukosis condemnations in certain flocks from the same farm are not related to high serotype 2 virus exposure.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Discovery of viruses and bacteria associated with swine respiratory disease on farms at a nationwide scale in China using metatranscriptomic and metagenomic sequencing.
mSystems
January 2025
National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China.
Respiratory disease (RD) is a worldwide leading threat to the pig industry, but there is still limited understanding of the pathogens associated with swine RD. In this study, we conducted a nationwide genomic surveillance on identifying viruses, bacteria, and antimicrobial resistance genes (ARGs) from the lungs of pigs with RD in China. By performing metatranscriptomic sequencing combined with metagenomic sequencing, we identified 21 viral species belonging to 12 viral families.
View Article and Find Full Text PDFComparison of clinical and virological features in pediatric and adult dengue cases at Insein General Hospital during Myanmar's 2022 dengue season.
Trop Med Health
January 2025
Department of Medical Research, Ministry of Health, No.5, Ziwaka Road, Dagon Township, Yangon, 11191, Myanmar.
Background: Myanmar is one of the countries in Southeast Asia where serious dengue outbreaks occur and Yangon is among the regions with the highest number of cases in the country. Many infections including dengue are common in Yangon during the rainy season, and co-infections may also occur. Adults are more likely than children to experience co-infections of dengue and other diseases.
View Article and Find Full Text PDFHepatocyte Rho-associated kinase signaling is required for mice to survive experimental porphyria-associated liver injury.
Hepatol Commun
February 2025
Department of Surgery, University of California, San Francisco, San Francisco, California, USA.
Background: Rho-associated kinases 1 and 2 (ROCK1 and ROCK2) regulate critical cell functions, including actomyosin contractility, apoptosis, and proliferation. Some studies suggest that ROCK inhibition may serve as a treatment for liver fibrosis. More investigation is needed to understand the role of hepatocyte ROCK signaling in vivo, especially in the context of profibrotic liver injury.
View Article and Find Full Text PDFDynamic trends of dengue fever serotypes in northern India: Exploring clinical manifestations, serotype dissemination, and the influence of mixed infections.
Trop Biomed
December 2024
Department of Microbiology, ESIC Medical College & Hospital, Faridabad, 121001, Haryana, India.
Examining the co-circulation of various serotypes and finding serotypes linked to illness severity were the main objectives of this study, which sought to investigate the epidemiology and serotype distribution of dengue in Haryana, North India. The cross-sectional study, which was carried out in a tertiary care hospital between September 2021 and April 2023, enrolled participants who met WHO criteria for probable dengue fever. Blood samples underwent molecular and serological diagnostics, such as immunochromatographic testing, VIDAS® Dengue NS1 assays, and TRUPCR® Dengue Detection and serotyping kits, in addition to the collection of clinical and demographic data.
View Article and Find Full Text PDFSeroprevalence and risk factors of Bluetongue virus in camels in Northern Oman: a cross-sectional study.
Trop Anim Health Prod
January 2025
Department of Biology, College of Science, Sultan Qaboos University, PC. 123, Muscat, Sultanate of Oman.
Bluetongue virus (BTV) has emerged as a significant concern in Oman, affecting various animal species, including camels. This cross-sectional study aimed to assess the seroprevalence of BTV in camels and explore the associated risk factors within the northern region of Oman. Between October 2016 and March 2017, 439 serum samples and 100 blood samples were collected from camels in five governorates.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!