I want to use a specific ingredient in poultry diet and need to add an enzyme to make this ingredient more digestible for poultry. How should I add the enzyme - based on the amount of feed or the amount of this specific ingredient (e.g., gram enzyme / kg Diet or gram enzyme / kg ingredient)?
What ingredient, what enzyme?
Your question could be answered either way.
If the ingredient in unusual for poultry diets, refer to the producer's claims regarding the substrate...
Are u sure that enzyme use for the ingredient? In general companies produce enzymes for common feeds and they have guidlines for usage
This exp is to know the effect of the enzyme on the feed containing the tested ingredient. so I'm not sure should I add the enzymes per kg feed or per kg for the tested ingredient
Dear Khalil, You design the experiment accordingly. The dosage of the enzyme is always decided on the trials. Plan the trial in such way that groups with different dosage rates are kept. See all the parameters during the trial. The enzyme is always expressed in FTU or units.
Dear Khalil, There are two approaches to supplement the enzymes in the poultry diets.
1: add the enzymes over and above the top i.e. gram of enzyme product/ton of feed, without any change in the calculation of nutrients.
2: Consider the nutrient sparing effect of the enzyme product and adjust it in the calculation of nutrients in the diet. This will decrease the cost of the ration as compared to the addition of enzyme product over and above the top.
Shakeel Ahmad provides good advice on the initial project design. Once you determine if the enzyme is active or not and determine an inclusion dose, you will also need to determine how well the enzyme survives feed processing and feed storage. Many enzymes lose much of their efficacy during pelleting, for example!!
Thanks Robert for your feedback. I will use liquid enzyme, I will spray the enzymes on the diet after pelleting, so that will keep the enzymatic activity high.
enzyme type and strains different according to type of feedstuff and its contents of antinutritional factors
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