Kochia foliage that had tested positive to Dragendorff's reagent (presumptive alkaloids) and had elicited chronic toxicosis when fed to rats was fed to sheep to characterize early stages of kochia toxicosis and evaluate treatments that might improve tolerance. Twelve fine-wool lambs (46 +/- 9 kg BW) were fed chopped kochia hay (35%) mixed with chopped alfalfa hay (65%) for 4 wk. The kochia diet...

About 150 waterfowl died and another 250 became weak and lethargic from suspected salt poisoning after using White Lake, a highly saline lake in Mountrail County, North Dakota. Frigid temperatures made fresh water unavailable, forcing the birds to ingest the saline waters with resultant toxic effects. Sick birds recovered when removed from the salt water and released into fresh water marshes. B...

PENRITH, MARY-LOUISE & ROBINSON, J.T.R. 1996. Selenium toxicosis with focal symmetrical poliomyelomalacia in postweaning pigs in South Africa. Onderstepoort Journal of Veterinary Research, 63:171-179 An outbreak of paralysis in finisher pigs in South Africa after ingestion of feed containing 54,581 mg/kg of selenium is described. The main and entirely consistent lesion was bilaterally symmetric...

A 3-year-old female Cocker Spaniel dog acutely developed hepatopathy following ingestion of root of Cycad (Cycas revoluta). Seven hours after the ingestion, she showed acute continuous nausea, vomiting, and marked depression and was presented to the local veterinary clinic. At physical evaluation, the dog showed moderate weakness, pale mucous membrane, jaundice, and dehydration. Serum biochemic...

CASE DESCRIPTION 3 adult Quarter Horses were evaluated for acute, progressive neurologic signs 18 hours after oral administration of 1 dose of 1.87% ivermectin paste. CLINICAL FINDINGS Clinical signs included depression, forelimb and hind limb ataxia, drooping of the superior and inferior lips, and muscle fasciculations. Bilateral mydriasis, decreased pupillary light reflexes, and absent mena...

Tall fescue (Schedonorus phoenix (Scop.) Holub) is a cool-season bunchgrass that grows throughout the eastern half of the United States and in the Pacific northwestern region of the country. It is estimated that over 90% of tall fescue pastures are infected with the fungal endophyte Neotyphodium coenophialum (Bacon and Siegel, 1988; Glenn et al., 1996). Tall fescue is native to Europe and was f...

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