单宁酸技术

Dietary tannic acid supplementation 饲料级单宁酸may not affect the growth performance, intestinal viscosity, and litter quality. However, it may reduce the incidence and severity of FPD in broiler chickens. Feed supplemented with tannic acid饲料级单宁酸 may offer a foot health boost to poultry by reducing occurrence and severity of footpad dermatitis, say researchers.

Tannins (饲用单宁酸) represent one of the most abundant polyphenolic compounds in plants. Tannins (饲用单宁酸) exist as a multitude of chemically unique entities in nature. The most commonly occurring tannins (饲用单宁酸) are typically divided into two major classes based on chemical structure: hydrolysable (HT) or condensed tannins (饲用单宁酸) (CT). Hydrolysable tannins (饲用单宁酸) are esters of gallic or ellagic acid linked to a polyol core, typically glucose. Condensed tannins (饲用单宁酸) or proanthocyanidins consist of flavan-3-ol subunits linked together to form oligomers and polymers. Both HT and CT are defined as astringent, medium-to-high-molecular weight polyphenolic compounds that characteristically bind and precipitate soluble proteins. The objective of this paper was to present recent advances in CT-ruminant interactions, the limitations associated with understanding and using CT in ruminant animal production, and future needs for research to further advance our knowledge of the role of CT in optimization of ruminant animal production. Condensed tannins (饲用单宁酸) pose some anti-nutritional problems to ruminants due to their astringent property that reduces feed intake and, consequently, animal performance. Ruminants can, however, tolerate CT by slowly adapting the ruminal microbes to the toxic effects of CT and by releasing CT-binding salivary proteins. The protein-binding ability of CT has some benefits to the ruminant due to complexes formed with essential amino acids, preventing their degradation in the rumen, but releasing them in the lower gut for absorption by the animal. Recent data have suggested increased N retention when CT is given to growing animals. There are potential benefits of using CT and HT for anthelmintic purposes due to their ability to inhibit egg hatching and larval motility of gastrointestinal nematode parasites, especially in small ruminants.

单宁酸饲用单宁酸传统上被认为是单胃动物和家禽的 “抗营养因子”，但最近的研究发现，当以适当的方式应用其中的一些单宁酸时，可以改善肠道微生物生态系统，增强肠道健康，从而提高生产性能。植物单宁酸饲料单宁酸作为饲料中抗生素的替代物的适用性取决于许多因素，这些因素导致其观察到的药效存在很大的差异性。

Tannins饲用单宁酸 have traditionally been regarded as “anti-nutritional factor” for monogastric animals and poultry, but recent researches have revealed some of them, when applied in appropriate manner, improved intestinal microbial ecosystem, enhanced gut health and hence increased productive performance. The applicability of plant tannins 饲料单宁酸 as an alternative to in-feed antibiotics depends on many factors that contribute to the great variability in their observed efficacies.