Herd-level prevalence and associated risk factors for Toxoplasma gondii, Neospora caninum, Chlamydia abortus and bovine viral diarrhoea virus in commercial dairy and beef cattle in eastern, northern and northeastern China

2015 ◽  
Vol 114 (11) ◽  
pp. 4211-4218 ◽  
Author(s):  
Wu-Wen Sun ◽  
Qing-Feng Meng ◽  
Wei Cong ◽  
Xiao-Feng Shan ◽  
Chun-Feng Wang ◽  
...  
Keyword(s):  
Risk Factors ◽  
Toxoplasma Gondii ◽  
Beef Cattle ◽  
Neospora Caninum ◽  
Bovine Viral Diarrhoea Virus ◽  
Northeastern China ◽  
Bovine Viral Diarrhoea ◽  
Herd Level ◽  
Diarrhoea Virus ◽  
Associated Risk Factors

Bovine viral diarrhoea virus in beef cattle herds of Yucatan, Mexico: Seroprevalence and risk factors

2005 ◽  
Vol 72 (3-4) ◽  
pp. 253-262 ◽  
Author(s):  
J.J. Solis-Calderon ◽  
V.M. Segura-Correa ◽  
J.C. Segura-Correa
Keyword(s):  
Risk Factors ◽  
Beef Cattle ◽  
Bovine Viral Diarrhoea Virus ◽  
Bovine Viral Diarrhoea ◽  
Diarrhoea Virus ◽  
Cattle Herds

scholarly journals Seroprevalence and risk factors of Neospora caninum and Bovine Viral Diarrhoea Virus in smallholder dairy cattle in Kenya

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
John VanLeeuwen ◽  
Joan Muraya ◽  
George Gitau ◽  
Dennis Makau ◽  
Bronwyn Crane ◽  
...  
Keyword(s):  
Risk Factors ◽  
Dairy Cattle ◽  
Neospora Caninum ◽  
Bovine Viral Diarrhoea Virus ◽  
Border Disease Virus ◽  
Bovine Viral Diarrhoea ◽  
Factors Associated ◽  
Border Disease ◽  
Diarrhoea Virus ◽  
Smallholder Dairy

Little is known of the risk factors associated with occurrence of Neospora caninum and Bovine Viral Diarrhoea Virus (BVDV) infection in Kenya. This cross-sectional study hypothesized that there are significant biosecurity measures associated with N. caninum and BVDV infections on smallholder dairy farms in Kenya that could be adopted to reduce seroprevalence and impacts. From 158 randomly selected farms in Meru County, Kenya, 470 serum samples were collected from dairy cattle (over six months of age and unvaccinated for these two pathogens). Sera were analyzed for antibodies to N. caninum and antibodies and antigens to BVDV. Data on risk factors were obtained through face-to-face interviews with the farmers. Multivariable logistic regression models were used to identify significant risk factors associated with seropositivity for the pathogens. The apparent seroprevalence of N. caninum, BVDV antibody, BVDV antigen, and co-infection with N. caninum and BVDV antibody and/or antigen were 35.1%, 47.1%, 36.2% and 18.5%, respectively. Risk factors associated with N. caninum antibody included: introducing milking cows into the farm, lending of cattle between farms, farm dogs having access to bovine aborted fetuses, and dogs whelping in the farm compound, with an interaction between the last two variables. BVDV antigen was associated with cattle having contact with pigs, and an interaction between cattle age and whether farms introduced new calves onto farms, and cattle age and whether visiting dairy farmers have access to the cow shed. Cows had higher odds of having BVDV antibodies compared to heifers. Factors associated with co-infection included cow parity, direct contact between dairy cattle, dogs and goats, and introducing new milking cows into the farms. Antibody and antigen results may be partly a function of classical swine fever virus or border disease virus interactions. Farmer education on these biosecurity measures is recommended, along with introduction of BVDV vaccination.

Prevalence of antibodies to bovine viral diarrhoea virus in bulk tank milk and associated risk factors in Scottish dairy herds

2012 ◽  
Vol 171 (18) ◽  
pp. 445-445 ◽  
Author(s):  
R. W. Humphry ◽  
F. Brülisauer ◽  
I. J. McKendrick ◽  
P. F. Nettleton ◽  
G. J. Gunn
Keyword(s):  
Risk Factors ◽  
Bovine Viral Diarrhoea Virus ◽  
Dairy Herds ◽  
Bovine Viral Diarrhoea ◽  
Bulk Tank Milk ◽  
Diarrhoea Virus ◽  
Bulk Tank ◽  
Associated Risk Factors

scholarly journals Mycobacterium aviumSubspeciesparatuberculosisand Bovine Leukemia Virus Seroprevalence and Associated Risk Factors in Commercial Dairy and Beef Cattle in Northern and Northeastern China

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Wu-Wen Sun ◽  
Wen-Fa Lv ◽  
Wei Cong ◽  
Qing-Feng Meng ◽  
Chun-Feng Wang ◽  
...  
Keyword(s):  
Risk Factors ◽  
Beef Cattle ◽  
Bovine Leukemia Virus ◽  
Large Scale ◽  
Leukemia Virus ◽  
Herd Size ◽  
Northeastern China ◽  
Herd Level ◽  
Source Sample ◽  
Associated Risk Factors

Mycobacterium aviumsubspeciesparatuberculosis(MAP) and bovine leukemia virus (BLV) are important pathogens, commonly responsible for economical loss to cattle farms all over the world, yet their epidemiology in commercial dairy and beef cattle in China is still unknown. Thus, from September 2013 to December 2014, a large-scale seroprevalence study was conducted to determine the seroprevalence and identify herd-level risk factors associated with MAP and BLV infection. The source sample was 3674 cattle from 113 herds in northern and northeastern China. Antibodies against MAP and BLV were detected using ELISA tests. At animal-level, the seroprevalence of antibodies against MAP and BLV was 11.79% (433/3674) and 18.29% (672/3674), respectively. At herd-level, the seroprevalence of antibodies against MAP and BLV was 20.35% and 21.24% (24/113), respectively. Herd size was identified to be associated with MAP infection while herd size and presence of cattle introduced from other farms were significantly associated with BLV infection. Further research is needed to confirm these findings and improve the knowledge of the epidemiology of these two pathogens in these regions and elsewhere in China.

scholarly journals Risk factors for Neospora caninum, bovine viral diarrhoea virus, and Leptospira interrogans serovar Hardjo infection in smallholder cattle and buffalo in Lao PDR

PLoS ONE ◽  
2019 ◽  
Vol 14 (8) ◽  
pp. e0220335 ◽  
Author(s):  
Luisa Olmo ◽  
Michael P. Reichel ◽  
Sonevilay Nampanya ◽  
Syseng Khounsy ◽  
Lloyd C. Wahl ◽  
...  
Keyword(s):  
Risk Factors ◽  
Neospora Caninum ◽  
Lao Pdr ◽  
Bovine Viral Diarrhoea Virus ◽  
Leptospira Interrogans ◽  
Bovine Viral Diarrhoea ◽  
Diarrhoea Virus
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