| epizootiology of bluetongue: the situation in the united states of america. | bluetongue was first reported in the united states in 1948 in sheep in texas. the virus has now been isolated from sheep in 19 states. when the disease first occurs in a flock, the morbidity may reach 50 to 75% and mortality 20 to 50%. in subsequent years, the morbidity may be only 1 to 2% with very few deaths. difference in breed susceptibility has not been observed. natural bluetongue infection has not been observed in angora or dairy goats. bluetongue virus was first isolated from cattle, in ... | 1975 | 169793 |
| "white eye calf" syndrome in oregon associated with bluetongue and epizootic hemorrhagic disease viruses. | | 1985 | 2989919 |
| analysis of the genomes of bluetongue viruses recovered from different states of the united states and at different times. | the ribonucleic acid (rna) genomes of the original representatives of the four serotypes of bluetongue virus (btv) isolated from the united states (btv-10, btv-11, btv-13 and btv-17) have been analyzed by polyacrylamide gel electrophoresis. ten double-stranded rna species were resolved for each virus and categorized into the size classes of large (l segments #1-3), medium (m segments #4-6) and small (s segments #7-10). minor electrophoretic mobility differences were observed for the m5 and s10 r ... | 1982 | 6278927 |
| health evaluation of a pronghorn antelope population in oregon. | during 1996 and 1997, the u.s. fish and wildlife service conducted a study to determine the cause(s) of population decline and low survival of pronghorn antelope (antilocapra americana) fawns on hart mountain national antelope refuge (hmnar) located in southeastern oregon (usa). as part of that study, blood, fecal, and tissue samples from 104 neonatal fawns, 40 adult does, and nine adult male pronghorns were collected to conduct a health evaluation of the population. physiological parameters rel ... | 1999 | 10479084 |
| surveys for disease agents in introduced elk in arkansas and kentucky. | surveys for disease agents were conducted in introduced free-ranging elk (cervus elaphus nelsoni) in arkansas and kentucky. elk had been captured in colorado and nebraska and released in arkansas during 1981-1985. from 1997 through 2002 elk were captured in arizona, kansas, north dakota, new mexico, oregon, and utah and released in southeastern kentucky. specimens were collected from 170 hunter-killed elk in arkansas during 1998-2006, and 44 elk in kentucky during 2001-2004. significant findings ... | 2010 | 20090032 |