| prevalence of antibodies to selected viruses in bovine embryo donors and recipients from brazil, and its implications in international embryo trade. | the prevalence of serum antibody to enzootic bovine leukosis (ebl), blue-tongue (bt), bovine herpesvirus 1 (bhv 1) and bovine virus diarrhoea (bvd) viruses in bovine embryo donors (d) and recipients (r) from minas gerais state, brazil was investigated. of 451 sera (130 d plus 321 r) tested for antibodies against ebl virus 104 (23.1%) were positive. of 410 sera (130 d plus 280 r) tested for antibody to bt, bhv 1 and bvd viruses the respective number of positive sera were 313 (76.3%), 209 (51.0%) ... | 1992 | 1339004 |
| interferon-alpha genes from bos and bubalus bubalus. | interferon-a genes were cloned from six breeds of three species of two genera (three chinese native cattle breeds of yellow cattle, wild yak and huanhu domestic yak, one european breed of holstein cow, and two water buffalo breeds of fuan water buffalo and fuzhong water buffalo) by direct pcr. the pcr products were directly inserted into the expression vector to be sequenced and expressed. sequence analysis showed that ifn-a genes of six clones were composed of 498 nucleotides, encoding a mature ... | 2006 | 16621760 |
| seroprevalence of respiratory viral pathogens of indigenous calves in western kenya. | most studies of infectious diseases in east african cattle have concentrated on gastro-intestinal parasites and vector-borne diseases. as a result, relatively little is known about viral diseases, except for those that are clinically symptomatic or which affect international trade such as foot and mouth disease, bluetongue and epizootic haemorrhagic disease. here, we investigate the seroprevalence, distribution and relationship between the viruses involved in respiratory disease, infectious bovi ... | 2016 | 27663380 |
| application of enzyme-linked immunosorbent assay for epidemiological studies of diseases of livestock in the tropics of mexico. | this study was conducted at the centre for research, teaching and extension in tropical livestock (centro de investigación, enseñanza y extensión en ganadería tropical) of the faculty of veterinary medicine of the national autonomous university of mexico. during the latter part of 1986 and throughout 1988 and 1989, the herd of holstein x zebu cattle at the university was tested for igg antibodies to twenty-one viral, bacterial, rickettsial and parasitic agents. antigens prepared from twenty infe ... | 1993 | 8219327 |