Study was undertaken to examine lead contents in different feeds and drinking water offered to buffaloes as well as those of buffalo blood and milk during two different seasons (winter and summer) in the area of Dakahlia, Egypt. The study revealed that the feedstuffs and drinking water contained less than the tolerance lead level, although the lead contents of the samples obtained in winter were higher than those of summer. The levels of lead in the blood and milk of buffaloes were within the normal range. However, winter values were higher than summer values. The lead contents of blood of veal calves were lower than those of buffalo bulls

The hematologic parameters (total red blood cell count, hematocrit, hemoglobin concentration, erythrocyte sedimentation rate, mean corpuscular hemoglobin, mean corpuscular volume, mean corpuscular hemoglobin concentration, total white blood cell count, relative and absolute differential white blood cell count) were examined in three (3) castrated male Swamp buffaloes 3-5 years old harnessed to loads of 100 kg, 200 kg, 300 kg and allowed to travel 1,000 meters over an asphalt road for a period of 30 days per load. Blood samples were collected and examined every seventh day of the test period. Except for blood hemoglobin concentration, no significant alterations in the values of most blood parameters examined were observed. The hemoglobin concentration of the animals under test were significantly decreased after harnessing to 100 kg and 200 kg but did not significantly differ from the pre-test values obtained after harnessing to the 300 kg load.