Common mistakes using enzymes in poultry nutrition

The enzyme products that have been developed are of great value to the broiler producer. We know commercial enzyme products release nutrients from the bulk ingredients that make the ingredients more valuable. Typically, a successful product improves value well beyond its cost. And we know that enzyme products named for the same enzyme can have other beneficial enzymes from the fermentation process that make them different, as well.
The best way to use an enzyme product would be to know how each bulk ingredient is affected by the product. That prevents us from limiting the choices we have when formulating in changing ingredient markets. We cannot be sure that the enzyme product will provide the same value if we see reducing one energy source or protein source for another when the prices are favorable unless we know how each ingredient will be affected.
In my opinion, companies marketing enzyme products should have a set of nutrient values for each ingredient the user may feed. Without this, we lose the ability to accurately formulate feeds. As bulk ingredient costs change, the formulas change. If more energy is released from maize, we will undervalue maize in a formulation because we fail to give it credit for the additional energy our chosen enzyme product releases. Then, when costs dictate that we replace maize with a suddenly less expensive source of energy and protein, we cannot be sure that we get the same benefit from the enzyme product.
The difficulty is knowing the actual contribution from each ingredient. The fact that the percentages of each bulk ingredient in each diet we use does vary allows us to begin to interpret the results. The only piece of data that we need to determine an enzyme product impact, after feeding, is to know what nutritional values must have been fed to get the observed outcome. Accurate prediction of flock growth from nutrition is the key and can come from accurate growth programs that do that prediction.
Obviously, the amount of energy released from maize in a starter feed cannot be the same as the energy released from maize in a finisher diet. Also, the sum of energy released from the different ingredients must be equal to the energy required to match the growth. So, a series of simultaneous equations are required, finding the matching energy expression that fits the minimum nutritional change that gives the growth.
This is the challenge, and, in my opinion, the results should be expressed and percent change of the initial ingredient values. Now, the ingredient plus its share of enzyme product cost can be fairly evaluated in formulations. Obviously, the formulation cannot contain native products and enzyme enhanced products together as the decision to add the enzyme impacts all ingredients.

Hello
It is respectfully recalled that according to the results of the experiment using multi-enzyme with barley in the diet of laying hens, the quality of eggs, especially the shell, decreased. Please, if your scientific colleagues have observed such results and scientific articles in their farm or research experiments, please send them to the email below. Thanks
Yaqabfar@yahoo.moshatahe

Hello, your content is correct. But the age of the bird and the operation or physiological activity of the digestive system. They are more important with the ingredients of the food than the ingredients of the enzyme. Because the composition of the enzyme depends on the age of the bird according to the growth or genetic development and the composition of the food. You are reminded of the activity of enzymes and the amount of calories they are able to release. It is necessary to consider the strength or activity of the endogenous enzyme inside the bird's body in relation to the bird's age. On the other hand, the activity of bacteria or fungi in probiotics or the origin of enzymes must be observed in terms of the need for nutrients and energy inside the bird's body, which is itself considered a living organism. However, it is not easy to say how much energy metabolism has.

I think the ME for enzymes depends birds age, enzymes composition, dietary /feedstuffs composition and energy value of the diet but it is safe to assume that it is equal to 50 kcal per kg diet but again depends on factors mentioned above.

Dear Dave Albin. I am not sure if I understood your explanation. Could you try to put it in another words? Sorry for my lack of understanding.

Dear Dr. Prasad. I got curious about the maximum energy release of 125-150 kcal/kg, whatever the combination of additives and diet composition. Where does this number comes from?

Dear Luis Fernando Luna. Thanks for the explanation and offering. My point is that there are two nutrient releases that have a direct link with performance: Energy (not really a nutrient) and amino acids. There's no way, just based on the performance change, to separate how much of the impact is coming from each one. Throwing everything in only one (f.i., energy), would generate either an over or under-estimation of it's impact. What I have done in the past with our model (Panorama) is to set an expected impact on amino acids and the performance and the model predicts the necessary change in energy to get that impact. If you do a mistake on the amino acid impact then your energy estimation is also wrong.

Dear Luis Fernando Luna. I became curious about your comment on defining matrices for a combination of enzymes based on growth models. Could you elaborate on that? Thank you.