1.054
IF5
1.150
IF
Q3
JCR
1.7
CiteScore
0.396
SJR
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SJR
40
MNiSW
148.75
ICV
ORIGINAL PAPER
 
CC-BY 4.0
 
 

Efficacy of different levels of Escherichia coli phytase in hens fed maize-soyabean meal based diets with a decreased non-phytate phosphorus content

K. Kozłowski 1  ,  
 
1
University of Warmia and Mazury, Department of Poultry Science, Oczapowskiego 5, 10-718 Olsztyn, Poland
J. Anim. Feed Sci. 2011;20(2):224–235
Publication date: 2011-06-18
KEYWORDS
ABSTRACT
The aim of this experiment was to determine the efficacy of different inclusion levels of new type phytase (ECP) synthesized by Escherichia coli and expressed in Pichia pastoris yeast (Optiphos) in maize-soyabean meal based diets on egg quality and the laying performance of laying hens aged from 20 to 44 weeks. Two hundred and twenty Lohmann Brown hens were randomly assigned to five treatments with 44 replicates each, and were kept individually in cages. The control diet (C) contained 2.5 g non-phytate phosphorus (NPP) and 35.5 g Ca/kg feed, and the experimental diets contained 1.3 g NPP and 33.0 g Ca/kg feed. The deficient diet (D) was offered without any addition of phytase, while the other treatments involved different levels of this enzyme: 125, 250 and 500 FTU/kg feed (treatments ECP125, ECP250 and ECP500, respectively). Compared with the deficient diet, phytase supplementation significantly affected the performance of hens over the entire experimental period (number of eggs laid, egg mass and FCR), and egg quality parameters: egg yolk colour (significantly in week 24 of the laying period) and shell thickness (significantly in week 12 of the laying period). The results of the present study indicate that the supplementation of diets for laying hens with ECP improved performance parameters. The NPP content of layer diets based on maize meal and soyabean meal can be reduced by 1.2 g/kg provided that the diets are supplemented with ECP at 125-250 FTU per kg diet.
CORRESPONDING AUTHOR
K. Kozłowski   
University of Warmia and Mazury, Department of Poultry Science, Oczapowskiego 5, 10-718 Olsztyn, Poland
 
CITATIONS (4):
1. Effects of Fermentation Product Containing Phytase on Productive Performance, Egg Quality, and Phosphorous Apparent Metabolism of Laying Hens Fed Different Levels of Phosphorus
Zhi-hong WANG, Xiao-fang DONG, Jian-ming TONG, Shang-zhong XU
Journal of Integrative Agriculture
2. Limestone particle size and Aspergillus niger phytase in the diet of older hens
Michaela Englmaierová, Miloš Skřivan, Eva Skřivanová, Ladislav Čermák
Italian Journal of Animal Science
3. Supplementation of Buttiauxella sp. 6-phytase to commercial laying hen diets with reduced nutrient density on productive performance and egg quality
Yueming Dersjant-Li, Carlos Millán, Oscar Casabuena, Alberto Quiles, Luis F. Romero, Marta I. Gracia
Journal of Applied Animal Nutrition
4. Supplemental phytase derived from E. coli in different concentrations on performance, bone mineralization and cost of broilers diets
GABRIEL DESSIMONI, NILVA SAKOMURA, DANIELLA DONATO, LARISSA VARGAS, MIRELLA MELARÉ, LETÍCIA PACHECO, FELIPE DALÓLIO
Anais da Academia Brasileira de Ciências
ISSN:1230-1388