Vitamin A is included in the group of fat-soluble vitamins and is a product of β-ionone.
Vitamin A takes part in many biochemical processes and is important for the process of growth, development of the skeleton and fertility of animals. A1 (retinol) is the most widely found and biologically active form of vitamin A. It is found in products of animal origin only.
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participation in regeneration of skin and mucous membrane;
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regulation of the processes of exchange of hydrocarbons, fats and proteins;
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prevention of disorders in the growth of organs and tissues in bodies of young animals;
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participation in provision of the protective function of the epithelium in adult animals;
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initiation of the growth in the number of antibodies and improvement of resistance of the body;
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important role in the formation of vision.
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loss of appetite;
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irritation of eyes and deterioration of night vision;
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reduction of the body's resistance to diseases;
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disorder of fat and mineral exchange;
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hepatic dysfunctions;
- reproductive dysfunctions (passivity during estrus, death of embryos, appearance of ovarian cysts in females, birth of dead or sick cubs).
Vitamin K (phylloquinone - K1, menaquinone - K2, menadione and vicasol - K3).
Vitamins of group K are fat-soluble and widely found in nature. Menadione (vitamin K3) is the most important as a feed additive.