Publications

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sheep consumption: a possible source of spongiform encephalopathy in humans.a fatal spongiform encephalopathy of sheep and goats (scrapie) shares many characteristics with creutzfeldt-jakob disease (cjd), a similar dementing illness of humans. to investigate the possibility that cjd is acquired by ingestion of contaminated sheep products, we collected information on production, slaughtering practices, and marketing of sheep in pennsylvania. the study revealed that sheep were usually marketed before central nervous system signs of scrapie are expected to appear; breeds k ...19853915057
isolation and characterization of an echovirus, possible "prime" strain of echovirus type 12. 19744373758
incidence of listeriosis in pennsylvania livestock. 19675624198
abortion and stillbirth associated with chlamydia psittaci var ovis in dairy goats with high titers to toxoplasma gondii.during two consecutive breeding seasons in a brucellosis-free dairy goat herd, approximately 40% to 70% of the does (mean herd size, 14.5) had stillbirths or aborted. none of the does aborted or had stillbirths twice. in the first breeding season, 9 of 13 does aborted in the last 2 months of gestation. three fetuses and 2 fetal placentas from 2 does were examined. microscopic findings included severe multifocal hepatic necrosis, mild pneumonia, and mild multifocal necrosis in the brain. cultures ...19836654724
status and prospects of the dairy goat industry in the united states.among the major classes of u.s. livestock, dairy goats have yet to achieve usda statistical reporting of their numbers, amounts of milk produced and processed, and cheese and other products marketed. however, the usda has published buck proofs of approximately 16,000 does annually from dairy herd improvement association (dhia) records of the alpine, lamancha, nubian, oberhasli, saanen and toggenburg breeds, thereby encouraging genetic progress. this represents a 1% participation in dhia of the e ...19968726751
q fever--california, georgia, pennsylvania, and tennessee, 2000-2001.q fever is a zoonotic disease caused by the bacterium coxiella burnetii. the most common reservoirs are domesticated ruminants, primarily cattle, sheep, and goats. humans acquire q fever typically by inhaling aerosols or contaminated dusts derived from infected animals or animal products. its highly infectious nature and aerosol route of transmission make c. burnetii a possible agent of bioterrorism. although up to 60% of initial infections are asymptomatic, acute disease can manifest as a relat ...200212403408
animals helping people. people helping animals. interview by shirley a. smoyak.1. counseling in the country at the gress mountain ranch provides both educational programs (i.e., animal-assisted activities) and counseling sessions (i.e., animal-assisted therapy). 2. animals who participate in the educational and counseling sessions include great pyrenees, cats, goats, horses, and mules. 3. animals help people develop trust and overcome shyness. sometimes the process is reciprocal. 4. animals develop "specialist" roles, such as greeter or calming agent, and help people cope ...200313677008
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