Astaxanthin (AST) is a red pigment of carotenoid and is considered a high-quality keto-carotenoid pigment with food, livestock, cosmetic, therapeutic and nutraceutical proposes. Astaxanthin exists naturally in fish, crustacean, algae, and birds that naturally exists, principally as fatty acid esters. Many investigations have exhibited the beneficial impacts of astaxanthin when utilized as a pharmaceutical agent in animal nutrition. Astaxanthin has a variety of considerable biological actions, such as being antihypertensive, an antioxidant, anti-obesity properties, and anti-carcinogenic. Astaxanthin has recently acquired popularity as a powerful immunomodulator to maintain the health status and well-being of both animals and humans. The use of astaxanthin is broadly utilized in medical sciences and the nutrition pf aquatic species; however, it presently has limited applications in broader animal nutrition. Understanding astaxanthin's structure, source, and mode of action in the body provides a conceptual base for its clinical application and could enhance the screening of compounds associated with the treatment of many diseases. This review article aims to clarify the important aspects of astaxanthin such as its synthesis, bioavailability, and therapeutics actions, with special interest in practical applications. Awareness of this benefits and production is expected to aid the livestock industry to develop nutritional strategies that ensure the protection of animal health.

虾青素 (AST) 是一种类胡萝卜素的红色色素，被认为是一种高品质的酮类胡萝卜素色素，可用于食品、牲畜、化妆品、治疗和营养保健品。虾青素天然存在于天然存在的鱼类、甲壳类动物、藻类和鸟类中，主要以脂肪酸酯的形式存在。许多研究表明，虾青素在动物营养中用作药剂时的有益影响。虾青素具有多种重要的生物学作用，例如抗高血压、抗氧化剂、抗肥胖特性和抗癌。虾青素最近作为一种强大的免疫调节剂而广受欢迎，可维持动物和人类的健康状况。虾青素的用途广泛用于医学科学和水生物种的营养；然而，目前它在更广泛的动物营养方面的应用有限。了解虾青素在体内的结构、来源和作用方式为其临床应用提供了概念基础，并可以加强对与治疗许多疾病相关的化合物的筛选。这篇综述文章旨在阐明虾青素的重要方面，如其合成、生物利用度和治疗作用，并特别关注实际应用。对这种益处和生产的认识有望帮助畜牧业制定确保保护动物健康的营养策略。和在体内的作用方式为其临床应用提供了概念基础，并可以增强对与许多疾病治疗相关的化合物的筛选。这篇综述文章旨在阐明虾青素的重要方面，如其合成、生物利用度和治疗作用，并特别关注实际应用。对这种益处和生产的认识有望帮助畜牧业制定确保保护动物健康的营养策略。和在体内的作用方式为其临床应用提供了概念基础，并可以增强对与许多疾病治疗相关的化合物的筛选。这篇综述文章旨在阐明虾青素的重要方面，如其合成、生物利用度和治疗作用，并特别关注实际应用。对这种益处和生产的认识有望帮助畜牧业制定确保保护动物健康的营养策略。