الفهرس 
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Abstract
Exposure to air pollutants resulting from burning of rice straw as well as other agricultural waste residues is common in the environment and has been reported as a health concern. Local cross breed cows - reared at villages of Al-Sharkia governorate, Egypt - were investigated during the period of rice straw burning (from September to November). Exposure related effects included increases in RBCs count, Hb concentration, PCV value, WBCs count, neutrophils and eosinophils with decreased lymphocytes percentages. Decreased serum progesterone level, total proteins, albumin, A/G ratio, AST, ALT, cholesterol, glucose, calcium and inorganic phosphorus values were obvious in air pollutants exposed cows with marked elevations in serum globulins and creatinine. While, estradiol-17 fJ level, totallipids, triglycerides and urea values were not significantly affected. Days open, number of services per conception and incidence of animals with smooth ovaries were higher in exposed cows than non exposed animals. In conclusion, reported results indicate that general health and reproductive efficiency in cows exposed to rice straw burning emissions were adversely affected.