Nickel toxicity and interactions of nickel with zinc, copper and lead were studied in growing chicks fed supplement diet. Feed intake and growth rate of the chick were reduced by 250 mg nickel as a sulfate salt per kg of feed. The toxicity of nickel was decreased by zinc or copper supplementation, but not lead. High nickel feed increased nickel level in kidney and decreased zinc levels in tibia and plasma. However, low zinc levels in tibia and in plasma were reversed by zinc supplementation. Hemoglobin, packed cell volume, and aortic elastin content were increased in chicks fed nickel

Salmonella pullorum strain W was serially passaged on the brain heart infusion agar containing acridine orange (AO) as a concentration of 100 mcg/ml. S. pullorum A060 and S. pullorum A0150, which were subcultured 60 and 150 passages on AO media, were examined for permeability barrier function of the cell wall. A060 and A0150 were appeared to be decreased in susceptibility against hydrophobic substances such as crystal violet, chloramphenicol and rifamycin, which might be resulted from the changes of permeability barrier function of the cell

The present studies were conducted to determine the causative agent of dermatophytosis occurred in two pigs from a farm in Sachun, Gyeongnam province in Korea. Brownish or greyish white crusty lesions and partial loss of hairs in these lesions were observed on the trunk of the pigs but no alopecia and pruritus were observed. Direct microscopic and cultural examination were performed for the hairs and crusts from skin lesions and the causative agent was identified as Microsporum nanum

This study was attempted to verify the mechanisms of RBC survival time shortened with vitamin E deficient and decrement of phospholipid concentrations by administration of iron. The concentration of iron in basal ration (group A and group B) was 40 mg/kg of feed, and the final concentrations of iron in the Fe (OH)3 supplemented-rations (group C and group D) were 13,496 mg/kg and 26,973 mg/kg, respectively

Fecal samples from beef and dairy calves less than 12-month-old of Chonnam area were examined for coccidial oocysts. The percentages of cattle and coccidian species found were: Eimeria alabamensis, 9.4; E. auburnensis, 12.5; E. bovis, 29.9; E. brasiliensis, 1.5; E. bukidnonensis, 2.1; E. canadensis, 10.4; E. cylindrica, 7.5; E. ellipsoidalis, 11.5; E. pellita, 1.7; E. subspherica, 10.4; E. wyomingensis, 2.9; and E. zuernii, 22.5. Fifty five percent of the fecal samples from 521 calves were positive for oocysts, and clinical coccidiosis was not found in any of these calves. The number of species in positive samples ranged from 1 to 7