Use of Plant Extracts Rich in Tannic Acid and Polyphenols as Enhancing Agents of Poultry Intestinal Quality

Dear Friends, I ve reading several comments over tannins and its effects. And was well described by Dr. Lancini. Just want to point some inputs. What we learn on antintrutional effects, its true, but it depends on how it is associated in the plant, witch plant we are referring and also the dose. Tannins, I see as an entity , divided and chemically classified. The major groups are condensed, and hydrolisable, and under this major groups there are several chemical structures that are defined. Those structures or characteristics, depends on what type o plant we are dealing with. For example, Quebracho, mainly condensed tannins, the major component of are Tannic acid from the group of profitestidins , and sorghum also a condensed group are proacinidins. On the other side, the chestnut are hydrolizable tannins, the main composition are gallo-ellalics. Just Quebracho, the profitestidins compounds form more them 50 chemical structures. Other plants, we know that, depending on the way the structures are formed and witch constituents, it may be toxical. Several review have demonstrate the potential on tannins extract on animal nutritions, mono gastric or ruminants. i can point some as: Unravelling the conundrum of tannins in animal nutrition and health, J Sci Food Agric 86:2010–2037 (2006) and Exploitation of dietary tannins to improve rumen metabolism and ruminant nutrition. JSciFoodAgric2011;91:24–37. It is important also, that we know that , for example, we deal with "tannins extract" witch is bioactive, the is not extract, like in sorghum, it is protecting the protein from degradation or digestibility. So, we may be ineffective most of the time trying to feed plants with high tannins, it need to be extracted. The mechanism of action on bacterial, it is mostly associated with forming complexes with cell was protein and enzymes, but also to some metal that the cells use to their regular metabolism, as iron. Other benefits of tannins on animal nutrition, and again it is dependent on the plant and also the dosage, are antioxidant effects, flavoring (in low doses stimulates dry matter intake), astringency, etc.etc..Also it is being applied on human health as anti carcinogenic, anti diabetes, anti-cholesterolemic , and others... The knowledge over tannins, and its beneficial influences on animal production and human health had being largely studied on the past 15 years.

Mr.MarceloManela- Surprisingly you are harping on the same cord what Dr.Lancini has left.Your statement looks lacking in clarity.You said major variety of tannins are condensed and hydrolysable.It is to reitarate that Ruminants had some capacity to mobilize tannins in plant due to the content of microbial enzymes which are absent in poultry and other non-ruminants.You had equally endorsed that the process to detanification prior to its utilization would be in demand.You had also asserted that tannic acid causes greater peristaltic movement to enable nutrients less exposure to intestinal lumen for facing enzymatic activity and then utilization. You are therefore requested to cater trial report on same as I had put emphasis since beginning.