饲料级单宁酸是一种天然的混合感官香精添加剂，含有丰富的单宁酸，是专门为牛的营养而开发的。饲用单宁是一种多酚类化合物，也被称为蛋白质保护剂，添加在动物饲料中，可使饲料中的蛋白质不被瘤胃降解。单宁能与蛋白质结合，这种（单宁+蛋白质）的结合力很强，且与pH值有关。膳食单宁对反刍动物的健康、生长和生产都有好处，它可以改善唾液分泌，增加饲料的采食量，使蛋白质不被瘤胃降解，平衡微生物生态系统，提高肠道氨基酸的利用率，减少腹胀和腹泻。
DMI提高到4%，乳品率提高到3%ByPro。
使用BPR和阴性对照组的氨基酸可用性比较。肠道内氨基酸的可用性，特别是组氨酸、苏氨酸、亮氨酸、赖氨酸和蛋氨酸的可用性增加，表明动物生产性能得到了改善。对照组和对照组的乳用尿素和血尿素氮的比较 BPR和对照组的血尿素氮的比较 ByPro对照组使用BPR可以降低MUN(7%)和BUN(12%)，有助于提高畜群的繁殖效率、胚胎活力和免疫功能。
用量和用药。Silvafeed ByPro在给药前应充分混合在饲料中。建议成年牛每天的剂量为10-15gm。每日剂量可根据兽医的建议进行调整。
SilvabyPro饲用单宁酸Abstract: Over recent years, the monogastric animal industry has witnessed an increase in feed prices due to several factors, and this trend is likely to continue. The hike in feed prices is mostly due to extreme competition over commonly used conventional ingredients. For this trend to be subdued, alternative ingredients of both plant and animal origin need to be sourced. These types of ingredients are investigated with the aim of substituting all or some of the conventional compounds. However, alternative ingredients often have a double-edged sword effect, in that they can supply animals with the necessary nutrients although they contain antinutritional factors such as tannins. Tannins are complex secondary metabolites commonly present in the plant kingdom, known to bind with protein and make it unavailable; however, recently they have been proven to have the potential to replace conventional ingredients, in addition to their health benefits, particularly the control of zoonotic pathogens such as Salmonella. Thus, the purpose of this review is to (1) classify the types of tannins present in alternative feed ingredients, and (2) outline the effects and benefits of tannins in monogastric animals. Several processing methods have been reported to reduce tannins in diets for monogastric animals; furthermore, these need to be cost-effective. It can thus be concluded that the level of inclusion of tannins in diets will depend on the type of ingredient and the animal species.单宁酸
来源于天然植物提取的单宁酸，具有良好的抗腹泻、抗菌、抗氧化、抗寄生虫等功效，能够改善畜禽生长性能，提高饲料利用率，减少抗生素和氧化锌的使用，提高动物整体的健康程度及动物性产品的安全性。
单宁酸具有抗氧化作用，是一种天然的防腐剂，能有效避免红酒被氧化变酸，使长期储存的红酒能保持最佳状态。最近的研究发现，单宁对预防和治疗心血管疾病有较好的效果。心脑血管疾病仍是威胁人类健康的头号杀手，所以中老年人坚持每天喝适量的葡萄酒进行自我保健是一个很好的方法。另外，现在很多年轻人工作压力大，精神压力大，很多人都处于亚健康状态。因此，年轻人最好也养成喝红酒的习惯，这样可以安抚神经，缓解压力。
单宁与蛋白质之间的相互作用已经研究了50多年，因为其独特的特性和在食品工业和药理学中的潜在用途。然而，随着单宁酸浓度对酶的调控以及与其他非蛋白氮化合物的潜在相互作用的新见解的提出，未来的研究还需要进行。应特别注意使用纯化和表征良好的单宁，因为植物提取物中多酚的化学成分和其他化合物的存在可能会显著影响单宁与氮化合物的相互作用。后续研究的目的应该是将这些结果推导到更复杂的、异质的、现实的体系中。总之，研究单宁酸与蛋白质之间的相互作用，以及其他有机化合物之间的相互作用的研究很可能会引起人们的极大关注，因为人们对多酚类化合物在人类健康和疾病治疗方面的普遍兴趣，同时也对其在饮料和食品工业中的作用产生了浓厚的兴趣。
Interactions between tannins and proteins have been studied for more than 50 years, because of their unique characteristics and potential use in food industry and pharmacology. However, with the new insights regarding regulation of enzymes by tannin concentration and the potential interaction with other non‐protein N compounds, future studies are needed. Special attention should be paid to the use of well‐purified and characterized tannins, because the chemistry of polyphenols and the presence of other compounds in plant extracts may significantly affect tannin interactions with N compounds. Follow‐up studies should aim to extrapolate these results to more complex, heterogenic, realistic systems. In conclusion, studies investigating the interactions between tannins and proteins, but also other organic compounds, are likely to attract significant attention due to the general interest in polyphenols with regard to human health and disease treatment, but also their role in the beverage and food industry.
这项体外研究表明，Silvafeed TSP(饲用单宁酸）对常见的细菌鱼病原体（如李斯特菌， 鼠疫耶尔森菌 和 沙门氏菌气单胞菌）具有很强的抗菌作用，在所有研究的剂量水平下，对沙门氏杆菌都有较强的抗菌效果，而对水生单胞菌有中等的效果，在较高的剂量范围内（0.40％和0.50％），对乳球菌和鲑鱼阴道球菌有轻微的效果。
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