الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Environmental pollution is a major global problem posing serious risk to man and animals. The development of modern technology and the rapid industrialization are among the foremost factors for environmental pollution. The environmental pollutants are spread through different channels, many of which finally enter into food chain of livestock. Environmental pollution is considered one of the most dangerous hazards affecting the country, rapid increases in population and industrial growth have led to use low quality water such as drainage and artesian water as well as waste or sewage water for irrigation. The continued use of wastewater for irrigation may result in the accumulation of heavy metals sometimes to levels above the permissible limits for animals.
Bahr El-Baqar is considered as one of the most polluted drains in Egypt, it is frequently use to convey raw industrial and municipal wastewater that make the drain anoxic over its entire length. The discharge of industrial, agricultural and municipal wastewaters in Bahr El-Baqar drain led to contamination of the soil which are dependent on this drain in their irrigation, these soils receive many kinds of pollutants especially, heavy metals such as lead and cadmium which are considered the most hazardous to plant and animal.
Lead and Cadmium are considered as the most important environmental pollutants which are quite toxic even at low concentration, the co-exposure to these two toxic metals has synergistic cytotoxicity leading to hematological, biochemical.