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Enhancing nutrient utilization of broiler chickens through supplemental enzymes
T A Woyengo1, K Jerez Bogota1, S L Noll2
1Department of Animal Science, South Dakota State University, Brookings, SD 57007, USA.
Poultry Science
|October 5, 2018
Summary
Adding enzymes like phytase, amylase, and non-starch polysaccharide-degrading enzymes (NSPase) to broiler diets improves nutrient digestibility and energy value. Combining amylase and NSPase with phytase offers the most significant benefits for phosphorus digestibility and apparent metabolizable energy, N.E. (AMEn).
Area of Science:
- Animal Nutrition
- Poultry Science
- Enzyme Technology
Background:
- Corn-soybean meal-based diets are common for broilers.
- Phytase, amylase, and non-starch polysaccharide-degrading enzymes (NSPase) can enhance nutrient utilization.
- Understanding enzyme combinations is crucial for optimizing broiler feed formulations.
Purpose of the Study:
- To evaluate the effects of individual and combined enzyme additions on nutrient digestibility and AMEn in broilers.
- To determine the optimal enzyme supplementation strategy for corn-soybean meal diets.
Main Methods:
- Four hundred and eighty male broiler chicks were fed 8 different diets from day 15 to 21.
- Diets included a basal formulation supplemented with phytase, amylase, and/or NSPase individually or in combination.
- Apparent ileal digestibility (AID) of nutrients and apparent metabolizable energy, N.E. (AMEn) were measured.
Main Results:
- Phytase supplementation significantly increased phosphorus (P) apparent ileal digestibility (AID).
- Amylase and NSPase, individually or combined, further enhanced P AID when added to phytase-supplemented diets.
- NSPase alone or in combination with phytase and/or amylase improved dietary AMEn.
Conclusions:
- Supplementing broiler diets with a combination of amylase and NSPase alongside phytase is most beneficial for P AID and AMEn.
- The efficacy of phytase increases with higher supplementation levels.
- Enzyme cocktails offer a promising strategy to improve nutrient utilization in broiler nutrition.
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