4Mahaffey K R. Introduction: advances in lead research: implications for environment health [J]. Environ Heahh Perspect, 1990,98 (1):89-91.
5Wunderlin E, Schefer U, Forss A M. Acute lead poisoning in calves:clinical, pathologlcal and toxicological findings[J]. [German] Schweizer Archiv fur Tierheilkunde, 1992, 134(10): 459-466.
6Humphreys D J. Effects of exposure to excessive quantities of lead on animals[J]. Br Vet J, 1991 , 147(1): 18-30.
7Bakalli R I, Pesti G M, Ragland W L. The magnitude of lead toxicity in broiler chickens[J]. Vet Human Toxicol, 1995, 37(1): 15-23.
8Lopez C M, Pineiro A E, Nunez N, et al. Thyroid hormone changes in males exposed to lead in the buenos aires area (argentina) [J].Pharmacol Res, 2000, 42(6): 599-602.
9Mazliah J, Barton S, Bental E, et ol. The effect of chronic lead intoxication in mature chickens[J]. Avian Dis, 1989, 33(3): 566-570.
10Trust K A, Miller M W, Ringelman J K, et ol . Effects of ingested lead on antibody production in mallards (Anas platyrhynehos)[J]. J Wildlife Dis, 1990, 26(3): 316-322.