The rearing of piglets is the most difficult period in the pigs’ production because of their poorly developed digestive system and the low activity of digestive enzymes. Problems in nutrition and stress cause some disorders in the functioning of the digestive system leading to diarrhea and the mortality of piglets. Starting in 2006 in the EU, a total ban on antibiotics in their use as growth promoters was introduced. Since then, new and safe feed additives have been sought in order to replace antibiotics. Organic and inorganic acids as well as their salts were recognized as effective and safe additives. Due to their properties, they can improve feed palatability and digestibility, reduce the buffer capacity of feed, impact the development and functioning of the pig’s digestive system and improve the health and growth parameters. However, the effectiveness of acids is related to their qualitative and quantitative share in the feed additive. In this review, some strategies for using organic acids, their mixtures and also some new multi-component products will be discussed.

中文翻译：

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酸对仔猪和断奶仔猪健康的影响及其机理-综述

仔猪的饲养是猪生产过程中最困难的时期，因为它们的消化系统欠发达，且消化酶的活性较低。营养和压力问题会导致消化系统功能紊乱，导致腹泻和仔猪死亡。从2006年开始，欧盟开始全面禁止使用抗生素作为生长促进剂。从那以后，为了替代抗生素，一直在寻找新的，安全的饲料添加剂。有机和无机酸及其盐被认为是有效和安全的添加剂。由于它们的特性，它们可以改善饲料的适口性和消化率，降低饲料的缓冲能力，影响猪消化系统的发育和功能，并改善健康和生长参数。然而，酸的有效性与其在饲料添加剂中的定性和定量份额有关。在这篇综述中，将讨论一些使用有机酸，它们的混合物以及一些新的多组分产品的策略。