Abstract
A conceptual model of lead metabolism in the organism of farm animals with a multi-chamber stomach under intake with a ration is presented. The input parameters are determined by the daily intake of lead from the diet and the factors that modify this process. The model includes three compartments: 1) transport of lead in the gastrointestinal tract (rumen, reticulum, omasum, abomasum, small and thick intestine); 2) distribution and accumulation of lead in organs and tissues (liver, kidneys, spleen, heart, lungs, blood, mammary gland, skin, muscle and bone tissue); 3) removal of lead from the body (urine, feces, wool, milk, fetal). The paper discusses the use of the model to assess the parameters of the transition on the trophic chain «ration–animal–food», forecasting and determining the acceptable level of lead intake with feed in order to ensure the production of environmentally safe products in the conduct of animal husbandry in conditions of contamination of agricultural land.
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