Multiexperiment evaluation of increasing phytase activity from Optiphos® and Optiphos Plus® on 21-day broiler performance and tibia mineralization

SUMMARY: Phytase is used in nearly all broiler diets at varying levels and new commercial sources have been developed in recent years. A series of 5 experiments at 4 different universities were conducted to investigate broiler performance metrics and tibia mineralization from 2 mixer-added, Escheric...

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Autores principales:	V.E. Ayres, M.E. Jackson, S. A Cantley, S.J. Rochell, C.D. Crumpacker, D.T. Lee, B.C. Bodle, W.J. Pacheco, M.S. Rueda, C.A. Bailey, K. Gardner, T.P. Boltz, J.S. Moritz
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	broiler phytase source super-dosing meta-analysis Animal culture SF1-1100 Food processing and manufacture TP368-456
Acceso en línea:	https://doaj.org/article/25aff7ef458046149e60fd6675f51c38
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spelling	oai:doaj.org-article:25aff7ef458046149e60fd6675f51c382021-11-22T04:19:24ZMultiexperiment evaluation of increasing phytase activity from Optiphos® and Optiphos Plus® on 21-day broiler performance and tibia mineralization1056-617110.1016/j.japr.2021.100210https://doaj.org/article/25aff7ef458046149e60fd6675f51c382021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1056617121000738https://doaj.org/toc/1056-6171SUMMARY: Phytase is used in nearly all broiler diets at varying levels and new commercial sources have been developed in recent years. A series of 5 experiments at 4 different universities were conducted to investigate broiler performance metrics and tibia mineralization from 2 mixer-added, Escherichia coli-derived, 6-phytases, Optiphos, a coated phytase, and Optiphos Plus, a recently developed phytase product selected to be intrinsically heat stable, independent of a coating. Treatments for each experiment included a negative control (NC) and the NC + varying levels of Optiphos and Optiphos Plus up to 1,500 FTU/kg. Experimental diets were fed to male broiler chicks for 21 d. On d 21, broilers were euthanized and tibiae were excised to determine tibia mineralization. Experiments 1–4 utilized pelleted diets while Experiment 5 utilized a mash diet. For each experiment, treatments were arranged by a formulated phytase level and source factorial, using a randomized complete block design. In addition, slope-ratio models were created using data from all experiments to evaluate responses to analyzed phytase levels. Positive live performance and tibia mineralization responses to phytase activity were observed (P < 0.05) in all 5 experiments. Performance and bone mineral metrics continued to improve up to approximately 1,500 FTU/kg in a curvilinear fashion, demonstrating a value of super-dosing, the degree employed being dependent on the product used and the cost-benefit economics of implementation. When comparing nonlinear response slopes across all analyzed phytase levels and experiments, the data showed that efficacy of Optiphos Plus was approximately 20% higher than that of Optiphos at similar analyzed levels (P < 0.05).V.E. AyresM.E. JacksonS. A CantleyS.J. RochellC.D. CrumpackerD.T. LeeB.C. BodleW.J. PachecoM.S. RuedaC.A. BaileyK. GardnerT.P. BoltzJ.S. MoritzElsevierarticlebroilerphytase sourcesuper-dosingmeta-analysisAnimal cultureSF1-1100Food processing and manufactureTP368-456ENJournal of Applied Poultry Research, Vol 30, Iss 4, Pp 100210- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	broiler phytase source super-dosing meta-analysis Animal culture SF1-1100 Food processing and manufacture TP368-456
spellingShingle	broiler phytase source super-dosing meta-analysis Animal culture SF1-1100 Food processing and manufacture TP368-456 V.E. Ayres M.E. Jackson S. A Cantley S.J. Rochell C.D. Crumpacker D.T. Lee B.C. Bodle W.J. Pacheco M.S. Rueda C.A. Bailey K. Gardner T.P. Boltz J.S. Moritz Multiexperiment evaluation of increasing phytase activity from Optiphos® and Optiphos Plus® on 21-day broiler performance and tibia mineralization
description	SUMMARY: Phytase is used in nearly all broiler diets at varying levels and new commercial sources have been developed in recent years. A series of 5 experiments at 4 different universities were conducted to investigate broiler performance metrics and tibia mineralization from 2 mixer-added, Escherichia coli-derived, 6-phytases, Optiphos, a coated phytase, and Optiphos Plus, a recently developed phytase product selected to be intrinsically heat stable, independent of a coating. Treatments for each experiment included a negative control (NC) and the NC + varying levels of Optiphos and Optiphos Plus up to 1,500 FTU/kg. Experimental diets were fed to male broiler chicks for 21 d. On d 21, broilers were euthanized and tibiae were excised to determine tibia mineralization. Experiments 1–4 utilized pelleted diets while Experiment 5 utilized a mash diet. For each experiment, treatments were arranged by a formulated phytase level and source factorial, using a randomized complete block design. In addition, slope-ratio models were created using data from all experiments to evaluate responses to analyzed phytase levels. Positive live performance and tibia mineralization responses to phytase activity were observed (P < 0.05) in all 5 experiments. Performance and bone mineral metrics continued to improve up to approximately 1,500 FTU/kg in a curvilinear fashion, demonstrating a value of super-dosing, the degree employed being dependent on the product used and the cost-benefit economics of implementation. When comparing nonlinear response slopes across all analyzed phytase levels and experiments, the data showed that efficacy of Optiphos Plus was approximately 20% higher than that of Optiphos at similar analyzed levels (P < 0.05).
format	article
author	V.E. Ayres M.E. Jackson S. A Cantley S.J. Rochell C.D. Crumpacker D.T. Lee B.C. Bodle W.J. Pacheco M.S. Rueda C.A. Bailey K. Gardner T.P. Boltz J.S. Moritz
author_facet	V.E. Ayres M.E. Jackson S. A Cantley S.J. Rochell C.D. Crumpacker D.T. Lee B.C. Bodle W.J. Pacheco M.S. Rueda C.A. Bailey K. Gardner T.P. Boltz J.S. Moritz
author_sort	V.E. Ayres
title	Multiexperiment evaluation of increasing phytase activity from Optiphos® and Optiphos Plus® on 21-day broiler performance and tibia mineralization
title_short	Multiexperiment evaluation of increasing phytase activity from Optiphos® and Optiphos Plus® on 21-day broiler performance and tibia mineralization
title_full	Multiexperiment evaluation of increasing phytase activity from Optiphos® and Optiphos Plus® on 21-day broiler performance and tibia mineralization
title_fullStr	Multiexperiment evaluation of increasing phytase activity from Optiphos® and Optiphos Plus® on 21-day broiler performance and tibia mineralization
title_full_unstemmed	Multiexperiment evaluation of increasing phytase activity from Optiphos® and Optiphos Plus® on 21-day broiler performance and tibia mineralization
title_sort	multiexperiment evaluation of increasing phytase activity from optiphos® and optiphos plus® on 21-day broiler performance and tibia mineralization
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/25aff7ef458046149e60fd6675f51c38
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Multiexperiment evaluation of increasing phytase activity from Optiphos® and Optiphos Plus® on 21-day broiler performance and tibia mineralization

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