Energy releasing efficacy of graded levels of a commercial microbial phytase

SUMMARY: An experiment was conducted to determine the energy release of a commercial phytase fed to broilers at multiple doses in basal diets that varied in ME. Dietary treatments included 3 negative controls (NC; 0.75% calcium and 0.30% non-phytate phosphorus) formulated at 3 ME levels (2,701, 2,86...

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Autores principales:	A.E. Lamp, J.S. Moritz
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	phytase apparent ileal digestible energy phytase dose broiler metabolizable energy level Animal culture SF1-1100 Food processing and manufacture TP368-456
Acceso en línea:	https://doaj.org/article/c2694c40e9f64b90aa76036fa1b99b7a
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spelling	oai:doaj.org-article:c2694c40e9f64b90aa76036fa1b99b7a2021-11-24T04:27:13ZEnergy releasing efficacy of graded levels of a commercial microbial phytase1056-617110.1016/j.japr.2021.100219https://doaj.org/article/c2694c40e9f64b90aa76036fa1b99b7a2022-03-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1056617121000829https://doaj.org/toc/1056-6171SUMMARY: An experiment was conducted to determine the energy release of a commercial phytase fed to broilers at multiple doses in basal diets that varied in ME. Dietary treatments included 3 negative controls (NC; 0.75% calcium and 0.30% non-phytate phosphorus) formulated at 3 ME levels (2,701, 2,868, and 3,000 kcal/kg). A commercial phytase product was added to each NC diet at 1,500, 4,500, 13,500, and 30,000 FTU/kg, creating a total of 15 dietary treatments. The phytase utilized was a phytase sourced from an Escherichia coli species bacterium expressed in a Trichoderma reesei fungus. Treatments were arranged in a 5 (phytase dose) × 3 (ME level) factorial in a randomized complete block design with 9 replications of 10 male broilers fed each of 15 dietary treatments for 21 d. On d 7, 14, and 21, birds provided the 3,000 kcal/kg diet had the lowest bird FI, and birds provided the 2,701 and 2,868 kcal/kg diets had the highest (P < 0.001). Additionally, FCR decreased as ME increased (P < 0.0001). Trends were observed for ME level × phytase dose interactions for d14 and 21 FCR. These trends demonstrate that phytase was most beneficial with the low energy diets. Eight treatments were selected for apparent ileal digestible energy (AIDE) analysis based on d 14 and 21 FCR data; AIDE ranged from 2,816 to 3,485 kcal/kg. Contrary to past studies, clear results were not observed for the energy releasing efficacy of graded levels of phytase. Performance improvements with phytase supplementation were likely more associated with P availability than AIDE.A.E. LampJ.S. MoritzElsevierarticlephytaseapparent ileal digestible energyphytase dosebroilermetabolizable energy levelAnimal cultureSF1-1100Food processing and manufactureTP368-456ENJournal of Applied Poultry Research, Vol 31, Iss 1, Pp 100219- (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	phytase apparent ileal digestible energy phytase dose broiler metabolizable energy level Animal culture SF1-1100 Food processing and manufacture TP368-456
spellingShingle	phytase apparent ileal digestible energy phytase dose broiler metabolizable energy level Animal culture SF1-1100 Food processing and manufacture TP368-456 A.E. Lamp J.S. Moritz Energy releasing efficacy of graded levels of a commercial microbial phytase
description	SUMMARY: An experiment was conducted to determine the energy release of a commercial phytase fed to broilers at multiple doses in basal diets that varied in ME. Dietary treatments included 3 negative controls (NC; 0.75% calcium and 0.30% non-phytate phosphorus) formulated at 3 ME levels (2,701, 2,868, and 3,000 kcal/kg). A commercial phytase product was added to each NC diet at 1,500, 4,500, 13,500, and 30,000 FTU/kg, creating a total of 15 dietary treatments. The phytase utilized was a phytase sourced from an Escherichia coli species bacterium expressed in a Trichoderma reesei fungus. Treatments were arranged in a 5 (phytase dose) × 3 (ME level) factorial in a randomized complete block design with 9 replications of 10 male broilers fed each of 15 dietary treatments for 21 d. On d 7, 14, and 21, birds provided the 3,000 kcal/kg diet had the lowest bird FI, and birds provided the 2,701 and 2,868 kcal/kg diets had the highest (P < 0.001). Additionally, FCR decreased as ME increased (P < 0.0001). Trends were observed for ME level × phytase dose interactions for d14 and 21 FCR. These trends demonstrate that phytase was most beneficial with the low energy diets. Eight treatments were selected for apparent ileal digestible energy (AIDE) analysis based on d 14 and 21 FCR data; AIDE ranged from 2,816 to 3,485 kcal/kg. Contrary to past studies, clear results were not observed for the energy releasing efficacy of graded levels of phytase. Performance improvements with phytase supplementation were likely more associated with P availability than AIDE.
format	article
author	A.E. Lamp J.S. Moritz
author_facet	A.E. Lamp J.S. Moritz
author_sort	A.E. Lamp
title	Energy releasing efficacy of graded levels of a commercial microbial phytase
title_short	Energy releasing efficacy of graded levels of a commercial microbial phytase
title_full	Energy releasing efficacy of graded levels of a commercial microbial phytase
title_fullStr	Energy releasing efficacy of graded levels of a commercial microbial phytase
title_full_unstemmed	Energy releasing efficacy of graded levels of a commercial microbial phytase
title_sort	energy releasing efficacy of graded levels of a commercial microbial phytase
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/c2694c40e9f64b90aa76036fa1b99b7a
work_keys_str_mv	AT aelamp energyreleasingefficacyofgradedlevelsofacommercialmicrobialphytase AT jsmoritz energyreleasingefficacyofgradedlevelsofacommercialmicrobialphytase
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Energy releasing efficacy of graded levels of a commercial microbial phytase

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