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A histologic and electron microscopic study was made on selected organs from channel catfish Icrulurus puncfurus (Rafinesque) fingerlings that were experimentally infected with channel catfish virus (CCV). Histopathology was characterized by necrosis and haernorrhage in kidney and liver, and haernorrhage in the spleen and gastrointestinal tract. Virus replication occurred in nuclei of cells in the kidney, liver and spleen. Intranuclear inclusion bodies consisting of geometric crystalline arrays and lamellar structures were associated with virus replication.

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A new chloramine disinfectant, 3-chloro-4,4-dimethyl-2-oxazolidinone, was assayed for toxicity in chickens. The compound did not induce detectable toxic effects in chickens when administered in drinking water (200 ppm) for an 8-week period. The compound has a significant pH dependent ability to detoxify aflatoxin B,. (

Numerous investigations of light induced avian buphthalmia using incandescent light have not defined an etiology. Chickens raised from 2 weeks of age in continuous fluorescent light developed shallow anterior chambers and buphthalmos within the first month of treatment. Chickens raised in continuous fluorescent light developed ocular enlargement similar to that reported in chickens raised in continuous incandescent light. Corneal diameters and axial globe lengths were an inconsistent means of documenting ocular enlargement. Iridocorneal angles were narrowed on scanning electron microscopy.