Bovine arsenic toxicosis.
A ranch in central South Dakota had a number of dead calves because of arsenic poisoning. The clinical picture included diarrhea, central nervous system signs, and death. Gross necropsy findings included adequate body fat, stomachs full of normal-appearing ingesta, and large amounts of greenish brown watery fluid in the intestine and colon. Microscopically there was severe lymphoid tissue necrosis in the mesenteric lymph nodes and gut-associated lymphoid tissue. Chemical analysis of kidneys showed no significant amounts of lead; however, kidney arsenic concentrations were 25 to 44 ppm. The source was a small pile of Paris Green (common name for cupric acetoarsenite) found in an old dump site in the pasture.
Neiger
Regg
R
Department of Veterinary Science, South Dakota State University, Brookings, SD 57007, USA.
Nelson
Nicole
N
Miskimins
Dale
D
Caster
Jim
J
Caster
Larry
L
D000818:Animals; D020261:Arsenic Poisoning / Q000209:etiology / Q000662:veterinary*; D018053:Arsenites / Q000506:poisoning*; D002417:Cattle; D002418:Cattle Diseases / Q000139:chemically induced* / Q000378:metabolism / Q000473:pathology; D002493:Central Nervous System Diseases / Q000139:chemically induced / Q000473:pathology / Q000662:veterinary; D003967:Diarrhea / Q000139:chemically induced / Q000473:pathology / Q000662:veterinary; D005260:Female; D007668:Kidney / Q000737:chemistry
D018053:Arsenites; C037577:Paris green