Fat digestibility and bile acids

Dear Mr. George Entz, this is an interesting topic. From a chemical point of view, both bile acids and esters of glycerol and fatty acids, such as glycerol monostearate (GMS), are emulsifiers. They can emulsify fats that enter the intestines with food. It is possible that GMS can activate lipase to some extent, but not as effectively (10-fold increasing) as bile acids do. GMS is attractive in that it is used mainly in the food industry and is readily available on the market. At the same time, GMS cannot be reused in the liver through the portal vein, as bile acids do. That is, chemical emulsifiers in this case do not perform the function of counteracting mycotoxins and other toxic substances. It can be said that chemical emulsifiers are less versatile than natural emulsifiers, because natural emulsifiers are better adapted to the physiology of animals and birds.

James S Tuan Yes,it is. Betaine is very reasonable decision. But mode of action is different if to compare with bile acids. Maybe is reason to combine these two additives, to obtain synergic effect.

fatai adeyemi yisau Dear Mr.Yisau, Yes, fat excess is unpleasant thing at laying hens. At first, less meat quality (at old hens) and second, fatty liver syndrome (increase mortality). Don't forget also about possible mycotoxin intoxication. So, combination of fatty acids, betaine and hepatoprotector (sylimarine) is very reasonable. My firm produces original premix, containing these ingredients as well as special bacteries destroying mycotoxins. If you have more questions, please ask me, I`m ready to help.

Dr. Fiodor S. Marchenkov. which is the maximum of fat in the diet of a laying hen that eats 120gr of an aliment with 2800 kcal 17 % of protein (15 % of P. digestible) and a good amino acid composition. Thinking of this amount with alfa sugars.

Daniel Carlos Besso Dear Daniel, thanks for info. I think so, it is reasonable level. To be sure in result, lipase + bile acids are reasonable, too. On the other hand, in this case, is possible to try to decrease a little bit fat content in recipe, to decrease feed cost.