EFFECTS OF CONCURRENT ORAL-ADMINISTRATION OF TOXIC LEVELS OF MONENSINAND LEAD ON CONCENTRATION OF DIFFERENT ELEMENTS IN THE LIVER OF BROILER CHICKS

Monensin and lead, separately or concurrently, were orally administere d to broiler chicks at different toxic levels. Monensin slightly incre ased the selenium and profoundly increased the lead and iron levels of liver. Lead also increased the level of iron in liver. Levels of lead and iron in liver tissue further increased when monensin and lead wer e administered concurrently. An increased mortality was recorded due t o concurrent administration of monensin and lead during acute toxicosi s but during subacute toxicosis body weights were higher in birds admi nistered monensin and lead concurrently than those given these substan ces separately.