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Starch digestibility, energy utilization, and growth performance of broilers fed corn-soybean basal diets supplemented with enzymes.
Poult Sci. 2015 Oct; 94(10):2472-9.PS

Abstract

A study was conducted to evaluate the effects of dietary α-amylase and β-xylanase supplementation of corn-soy diets, formulated with or without supplemental phytase, on growth performance, energy utilization, and starch digestibility in broiler chickens. A total of 336 slow-feathering, Cobb × Cobb 500 male broilers were randomly distributed to 6 treatments having 8 replicates of 7 birds each. Birds were fed a common starter diet to d 14 post-hatch (3,050 kcal/kg AMEn, 21.7% CP, 1.05% Ca, and 0.53% nPP). The experimental diets were provided afterwards until d 25. A 2 × 3 factorial arrangement of 2 control diets (basal = corn-soy diet without added phytase or PHY = corn-soy diet formulated with 1,000 phytase units/kg) and 3 carbohydrase supplementations (0, 80 kilo-Novo α-amylase units/kg, or 80 kilo-Novo α-amylase units/kg + 100 fungal β-xylanase units/kg) was used from d 14 to 25. Excreta were collected from 21 to 24 d and all birds were euthanized at 25 d for jejunum and ileum content collection. Samples of feed, excreta, and jejunal and ileal digesta were analyzed for determination of total tract retention and ileal apparent digestibility. No interactions between diet and carbohydrase were observed. Broilers fed diets formulated with phytase or supplemented with amylase + xylanase had higher BW gain (BWG) and lower FCR (P < 0.05) when compared with birds fed diets without carbohydrases. Relative to the basal diet, AMEn was increased (P < 0.01) by 70 kcal/kg and 99 kcal/kg when birds were fed the diet supplemented with amylase and amylase + xylanase, respectively. Starch digestibility in the jejunum and ileum was increased (P < 0.05) by 3.5% and 2.4%, respectively, when birds were fed the diet supplemented with amylase + xylanase. Results from this experiment show that corn-soy diets having phytase and supplemented with amylase and xylanase led to increased growth performance, AMEn, and starch digestibility in broilers. Furthermore, the efficacy of exogenous amylase and xylanase was independent of the presence of microbial phytase.

Authors+Show Affiliations

Departamento de Zootecnia, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 7712, Porto Alegre, RS, Brazil, 91540-000.Departamento de Zootecnia, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 7712, Porto Alegre, RS, Brazil, 91540-000 slvieira@ufrgs.br.Departamento de Zootecnia, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 7712, Porto Alegre, RS, Brazil, 91540-000.Departamento de Medicina Veterinária Preventiva, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 8834, Porto Alegre, RS, Brazil, 91540-000.DSM Nutritional Products, Av. Engº Billings, 1729, São Paulo, SP, Brazil, 05321-010.DSM Nutritional Products, Wurmisweg 576, 4303 Kaiseraugst, Switzerland.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26316335

Citation

Stefanello, C, et al. "Starch Digestibility, Energy Utilization, and Growth Performance of Broilers Fed Corn-soybean Basal Diets Supplemented With Enzymes." Poultry Science, vol. 94, no. 10, 2015, pp. 2472-9.
Stefanello C, Vieira SL, Santiago GO, et al. Starch digestibility, energy utilization, and growth performance of broilers fed corn-soybean basal diets supplemented with enzymes. Poult Sci. 2015;94(10):2472-9.
Stefanello, C., Vieira, S. L., Santiago, G. O., Kindlein, L., Sorbara, J. O., & Cowieson, A. J. (2015). Starch digestibility, energy utilization, and growth performance of broilers fed corn-soybean basal diets supplemented with enzymes. Poultry Science, 94(10), 2472-9. https://doi.org/10.3382/ps/pev244
Stefanello C, et al. Starch Digestibility, Energy Utilization, and Growth Performance of Broilers Fed Corn-soybean Basal Diets Supplemented With Enzymes. Poult Sci. 2015;94(10):2472-9. PubMed PMID: 26316335.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Starch digestibility, energy utilization, and growth performance of broilers fed corn-soybean basal diets supplemented with enzymes. AU - Stefanello,C, AU - Vieira,S L, AU - Santiago,G O, AU - Kindlein,L, AU - Sorbara,J O B, AU - Cowieson,A J, Y1 - 2015/08/27/ PY - 2015/07/06/accepted PY - 2015/05/29/received PY - 2015/8/29/entrez PY - 2015/9/1/pubmed PY - 2015/11/11/medline KW - amylase KW - broiler KW - metabolizable energy KW - starch KW - xylanase SP - 2472 EP - 9 JF - Poultry science JO - Poult Sci VL - 94 IS - 10 N2 - A study was conducted to evaluate the effects of dietary α-amylase and β-xylanase supplementation of corn-soy diets, formulated with or without supplemental phytase, on growth performance, energy utilization, and starch digestibility in broiler chickens. A total of 336 slow-feathering, Cobb × Cobb 500 male broilers were randomly distributed to 6 treatments having 8 replicates of 7 birds each. Birds were fed a common starter diet to d 14 post-hatch (3,050 kcal/kg AMEn, 21.7% CP, 1.05% Ca, and 0.53% nPP). The experimental diets were provided afterwards until d 25. A 2 × 3 factorial arrangement of 2 control diets (basal = corn-soy diet without added phytase or PHY = corn-soy diet formulated with 1,000 phytase units/kg) and 3 carbohydrase supplementations (0, 80 kilo-Novo α-amylase units/kg, or 80 kilo-Novo α-amylase units/kg + 100 fungal β-xylanase units/kg) was used from d 14 to 25. Excreta were collected from 21 to 24 d and all birds were euthanized at 25 d for jejunum and ileum content collection. Samples of feed, excreta, and jejunal and ileal digesta were analyzed for determination of total tract retention and ileal apparent digestibility. No interactions between diet and carbohydrase were observed. Broilers fed diets formulated with phytase or supplemented with amylase + xylanase had higher BW gain (BWG) and lower FCR (P < 0.05) when compared with birds fed diets without carbohydrases. Relative to the basal diet, AMEn was increased (P < 0.01) by 70 kcal/kg and 99 kcal/kg when birds were fed the diet supplemented with amylase and amylase + xylanase, respectively. Starch digestibility in the jejunum and ileum was increased (P < 0.05) by 3.5% and 2.4%, respectively, when birds were fed the diet supplemented with amylase + xylanase. Results from this experiment show that corn-soy diets having phytase and supplemented with amylase and xylanase led to increased growth performance, AMEn, and starch digestibility in broilers. Furthermore, the efficacy of exogenous amylase and xylanase was independent of the presence of microbial phytase. SN - 0032-5791 UR - https://www.unboundmedicine.com/medline/citation/26316335/Starch_digestibility_energy_utilization_and_growth_performance_of_broilers_fed_corn_soybean_basal_diets_supplemented_with_enzymes_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0032-5791(19)31956-X DB - PRIME DP - Unbound Medicine ER -