الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
”The purpose of the research: The researcher determined the clinical importance of trace elements in calves and sheep and their relationship to some diseases and modern methods of diagnosis in three main tasks that are summarized in (1) a reference research on the effect of zinc (2) the effect of a group of vitamins and volatile oils on growth in Calves (3) Reference values for trace elements in sheep in Libya. The practical part / methods used: The first part The researcher presented a reference for studies that dealt with the effect of organic zinc on milk production in dairy cows. As for the second part, the researcher presented a paper on the effect of supplementation with a mixture of vitamin A. H . C and volatile essential oils (superimmune) on growth performance and antioxidant status in Holstein calves. As for the third part, the researcher presented a paper on studies on the deficiency of trace elements in sheep in the eastern region of Libya so far. There has been limited data regarding the status of trace elements among sheep The healthy Bargawi that grows in the northeastern region of Libya. The results of the current study indicated a combination of vitamin A. H. C may have a better effect on body weight gain and antioxidant status in lactating calves than supplementation with a single vitamin. The study also provides the basic reference values for lightning lambs in two regions in the northeastern region of Libya. The results, if not comprehensive, can help monitor the health of sheep flocks and provide diagnostic information for potential diseases.