Zinc is an essential trace element that plays a key role in many biological processes in animals. Its presence is critical for the proper functioning of over 300 enzymes that participate in metabolic reactions, including protein synthesis, carbohydrate and lipid metabolism, as well as DNA replication and transcription. Zinc's effects are also noticeable in animal growth and development. It is essential for proper growth, as it supports the action of hormones such as insulin and growth hormones. Zinc has a significant impact on the health of the skin, coat and claws, preventing their brittleness and improving their overall condition. Additionally, zinc is important for maintaining the integrity of cell membranes, which helps protect cells from oxidative damage. In the immune system, zinc plays a fundamental role, strengthening immunity by regulating cytokine production and activating T and B lymphocytes, which is crucial in the response to infections. Zinc deficiency can lead to many health problems, including slower growth, worsening skin condition and weakened immunity. Therefore, appropriate zinc supplementation is crucial to ensure the health and well-being of animals.