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Effects of a combination of xylanase, amylase and protease, and probiotics on major nutrients including amino acids and non-starch polysaccharides utilization in broilers fed different level of fibers
- Source :
- Poultry Science. 98:5571-5581
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- This study evaluated the effects of a combination of xylanase, amylase, and protease (XAP), with probiotics (3 Bacillus spp.) supplementation on apparent ileal digestibility (AID) and apparent total tract digestibility (ATTD) of nutrients in Cobb 500 broilers from 0 to 21 d. A completely randomized 2 × 4 factorial design (2 levels of fiber; 4 types of supplements) with 8 replicate cages (6 birds/cage) was used. Each low and high-fiber diet contained 500 FTU/kg Buttiauxella sp. phytase and was supplemented with: (a) none (control), (b) XAP (2,000 U xylanase + 200 U amylase + 4,000 U protease/kg diet), (c) probiotics (75,000 CFU/g of Bacillus spp.), or (d) XAP + probiotics. High fiber decreased (P < 0.05) nitrogen-corrected apparent metabolizable energy (AMEn), AID of all amino acids (AA), AID and ATTD of dry matter (DM), crude protein (CP), starch, and gross energy (GE). High fiber increased (P < 0.01) the flow of total non-starch polysaccharides (NSP) in both ileum and total tract. The XAP + probiotics increased (P < 0.01) AMEn as well as AID and ATTD of DM, CP, GE, starch, while alone, XAP yielded similar improvement except for DM compared with control. The supplemental XAP alone improved (P < 0.01) the digestibility of most of the AAs compared with control. Moreover, XAP + probiotics increased (P < 0.05) AID of all AA except arginine and serine compared with control. A fiber × supplements interaction (P < 0.05) was found for AID of histidine and threonine, and their digestibility in high-fiber diet was improved to a level comparable to low-fiber diet by XAP + probiotics. The flow of NSP in XAP group was 5 to 6% lower than in control while NSP flow in XAP + probiotic group was further 4% lower than that of XAP group (P < 0.01). The results infer that the combination of XAP and probiotics can effectively optimize the nutrient digestibility in broilers fed both low and high-fiber diets.
- Subjects :
- Dietary Fiber
Starch
medicine.medical_treatment
Random Allocation
03 medical and health sciences
chemistry.chemical_compound
Ileum
Polysaccharides
medicine
Animals
Dry matter
Amen
Food science
Amylase
Amino Acids
030304 developmental biology
0303 health sciences
Protease
Dose-Response Relationship, Drug
biology
Chemistry
Probiotics
0402 animal and dairy science
Broiler
Nutrients
04 agricultural and veterinary sciences
General Medicine
Animal Feed
040201 dairy & animal science
Diet
Gastrointestinal Tract
Xylosidases
Amylases
Dietary Supplements
biology.protein
Xylanase
Animal Nutritional Physiological Phenomena
Digestion
Animal Science and Zoology
Phytase
Chickens
Peptide Hydrolases
Subjects
Details
- ISSN :
- 00325791
- Volume :
- 98
- Database :
- OpenAIRE
- Journal :
- Poultry Science
- Accession number :
- edsair.doi.dedup.....899e8dea3edf07f0596ef5673bf65fb9
- Full Text :
- https://doi.org/10.3382/ps/pez310