About: Effect of exogenous phytase on egg quality in laying hens

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	An experiment was conducted to determine the effect of different levels of exogenous phytase on egg quality in laying hens fed diets with low levels of only plant original phosphorus. Twenty four Lohmann Brown hens at 31 weeks of age were housed in individual cages. In total three experiments were successively carried out with the same laying hens. In all three experiments the same diet with the same content of nutrients were always used. The control diet contained no exogenous phytase. Experimental diets differed in the level and sources of exogenous phytase. Eggs were collected daily during period of the experiment to measure egg quality. Measurement of physical parameters such as egg weight and strength of eggshell were performed daily. Shell weight and shell thickness were determined after washing and drying of shells. The shell thickness was evaluated using the micrometer. Shell proportion was calculated. The addition of phytase(150, 200, 250 and 300 FTU per kg diet) did not affect egg weight. Addition of exogenous phytase at levels 150, 200 and 250 FTU per kg had no significant effect (P >0.05) on eggshell quality. Only addition of both phytases(Natuphos and Optiphos)at the level 300 FTU to the same diet had positive effect on eggshell quality (P <0.05). An experiment was conducted to determine the effect of different levels of exogenous phytase on egg quality in laying hens fed diets with low levels of only plant original phosphorus. Twenty four Lohmann Brown hens at 31 weeks of age were housed in individual cages. In total three experiments were successively carried out with the same laying hens. In all three experiments the same diet with the same content of nutrients were always used. The control diet contained no exogenous phytase. Experimental diets differed in the level and sources of exogenous phytase. Eggs were collected daily during period of the experiment to measure egg quality. Measurement of physical parameters such as egg weight and strength of eggshell were performed daily. Shell weight and shell thickness were determined after washing and drying of shells. The shell thickness was evaluated using the micrometer. Shell proportion was calculated. The addition of phytase(150, 200, 250 and 300 FTU per kg diet) did not affect egg weight. Addition of exogenous phytase at levels 150, 200 and 250 FTU per kg had no significant effect (P >0.05) on eggshell quality. Only addition of both phytases(Natuphos and Optiphos)at the level 300 FTU to the same diet had positive effect on eggshell quality (P <0.05). (en)
Title	Effect of exogenous phytase on egg quality in laying hens Effect of exogenous phytase on egg quality in laying hens (en)
skos:prefLabel	Effect of exogenous phytase on egg quality in laying hens Effect of exogenous phytase on egg quality in laying hens (en)
skos:notation	RIV/62156489:43210/14:00225203!RIV15-MZE-43210___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(QJ1310002)
http://linked.open...iv/cisloPeriodika	3
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Przywarová, Alena Lichovníková, Martina Musilová, Anna
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Mendelova univerzita v Brně / Agronomická fakulta
http://linked.open...dnocenehoVysledku	13261
http://linked.open...ai/riv/idVysledku	RIV/62156489:43210/14:00225203
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	phytase; feed; egg quality; phytate; laying hen; eggshell (en)
http://linked.open.../riv/klicoveSlovo	laying hen eggshell feed phytate egg quality phytase
http://linked.open...odStatuVydavatele	SK - Slovenská republika
http://linked.open...ontrolniKodProRIV	[AC70FCD4EBAF]
http://linked.open...i/riv/nazevZdroje	Acta fytotechnica et zootechnica
http://linked.open...in/vavai/riv/obor	GG
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Identification and solution of selected problems in hens nutrition and egg quality from contrast housing
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	17
http://linked.open...iv/tvurceVysledku	Musilová, Anna Przywarová, Alena Lichovníková, Martina
issn	1335-258X
number of pages	5 (xsd:int)
http://localhost/t...ganizacniJednotka	43210

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