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
| Autor: | Rajesh Jha, Ajay Awati, Alok Kumar Singh, J D Berrocoso, Yueming Dersjant-Li, U. P. Tiwari |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
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 |
| Zdroj: | Poultry Science. 98:5571-5581 |
| ISSN: | 0032-5791 |
| DOI: | 10.3382/ps/pez310 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|