Uses of radioactive and stable isotopes in animal production research

Since the fifties, the widespread use of radioactive isotopes and radiation in the metabolic and clinical studies began. Fully coverage of uses of radioactive isotopes and radiation in research on animal health and animal production is a tedious process. This requires a classification of the manifold applications of radioisotopes which is a quantitative classification provides the necessary information about the quantities of the labelled compound or element or corresponding stable compound during metabolic processes. The second classification of applications is a qualitative classification that identifies the location of the labelling or compound. These qualitative and quantitative applications are divided into two types: fixed applications, which include measurements at a specific time, and changing applications, which include the rate of change over time. The aim of this study is to cover the applications of radioactive isotopes in animal studies, and indicate how to benefit from the results of studies of radioactive isotope quantity and its corresponding stable isotope using methods of comparison or mitigation.