. 2010. Thermo-stable Escherichia coli phytase improves growth performance and nutrient utilization in broilers fed mash and pelleted corn Á soybean-meal-based diets. Can. J. Anim. Sci. 90: 529Á536. The bio-efficacy of Escherichia coli-derived phytase produced by thermo-protective coating technology (coated phytase) was evaluated in mash or pelleted broiler diets. Three hundred and twenty-four broilers were divided into 54 groups of six birds and fed nine corn-based diets (six replicates per diet) from 1 to 22 d of age. The nine diets were a positive control (PC) (calcium, 0.9% and non-phytate phosphorus, 0.45%) fed as mash plus 2 )4 factorial of a negative control (calcium, 0.78% and non-phytate phosphorus, 0.26%) fed as mash (NC-M) or pellet (NC-P) and with coated phytase at 0, 500, 600 or 700 FTU kg (1 . The diets were pelleted at 808C, and pressure load of 40 psi. Body weight gain (BWG) for the PC diet was higher (PB0.001) than that for the NC-M or NC-P diet. The BWG and tibia ash were linearly increased (PB0.001) by increased level of the phytase in NC-M or NC-P diet. The BWG for NC-M or NC-P diet reached that of the PC diet when phytase was supplemented at 600 or 700 FTU kg (1 . In conclusion, the coated phytase improved nutrient utilization in broilers, and its bio-efficacy was unaffected by the pelleting process.Key words: Broiler, digestibility, pelleting, performance, thermostable-phytase Woyengo, T. A., Emiola, A., Owusu-Asiedu, A., Guenter, W., Simmins, P. H. et Nyachoti, C. M. 2010. La phytase thermostable d'Escherichia coli ame´liore la croissance et l'assimilation des aliments chez les poulets de chair nourris de paˆte´e ou d'agglome´re´s de maı¨s et de tourteau de soja. Can. J. Anim. Sci. 90: 529Á536. Les auteurs ont e´value´l'efficacite´biologique de la phytase d'Escherichia coli pre´pare´e avec un enduit thermoprotecteur (phytase enrobe´e) quand on s'en sert pour enrichir la ration en paˆte´e ou en agglome´re´s des poulets de chair. Trois cent vingt-quatre poulets de chair ont e´te´re´partis en 54 groupes de six et ont rec¸u neuf rations a`base de maı¨s (six re´pe´titions par ration) du 1 er au 22 e jour. Les neuf rations e´taient les suivantes : ration te´moin positive (0,9% de calcium et 0,45% de phosphore non phytique) sous forme de paˆte´e (PC), plus re´partition factorielle 2 )4 de rations te´moin ne´gatives (0,78% de calcium et 0,26% de phosphore non phytique) sous forme de paˆte´e (NC-M) ou d'agglome´re´s (NC-P) enrichies avec 0, 500, 600 ou 700 FTU de phytase enrobe´e par kg. Les rations ont e´te´agglome´re´es a`une tempe´rature de 808C et a`une pression de 40 livres au pouce carre´. La ration PC accroıˆt plus (PB0,001) le gain de poids corporel (GPC) que les rations NC-M ou NC-P. Le GPC et le poids des cendres du tibia augmentent de fac¸on line´aire (P B0,001) avec la concentration de phytase dans la ration NC-M ou NC-P. Le GPC des oiseaux nourris avec la ration NC-M ou NC-P atteint un niveau e´quivalent a`celui obtenu avec la ration PC de`s que le supple´ment de phytase atteint 600 ou...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.