REVIEW PAPER
Phytase applications in poultry feeding: Selected issues
 
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Department of Food Biotechnology, Cracow Agricultural University, 29-Listopada 46, 31-425 Kraków, Poland
Publication date: 2001-04-20
 
J. Anim. Feed Sci. 2001;10(2):247–258
 
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ABSTRACT
The paper critically reviews the literature concerning phytase applications in poultry feeding with an emphasis on a strategy that partly overcomes limitations of the enzyme efficacy in broiler and turkey diets. Microbial sources of phytase, commercial forms of the enzyme, its desirable features and mode of action are discussed as well as properties of the substrate in plant tissues and the enzyme-substrate interactions in the intestinal tract of poultry. Phytase interactions with supplemental inorganic phosphorus and partial rather than complete dephosphorylation of feed phytates were identified as the key factors that limit phytase efficacy in the diets of poultry. Research on enzymic cocktails that comprised phytase A, phytase B, pectinase and citric acid are reviewed. Enzymic cocktails in either soluble or intracellular form (fungal mycelium) enhanced the yield of dephosphorylation and influenced phytate conversion rate. Examples of enzymic cocktails which improved performance and bone mineralization of broilers fed wheat-based, low phosphorus diets, close to or even above values found in birds receiving a diet high in inorganic phosphate, are given. The enzymic cocktail strategy when applied to poultry diets resulted also in the highest values of phosphorus retention (72-75% in broilers, 77-80% in turkeys) known in the literature.
 
CITATIONS (7):
1.
Activation of Endogenous Phytase and Degradation of Phytate in Wheat Bran
Jia Guo, Yuan-Yuan Bian, Ke-Xue Zhu, Xiao-Na Guo, Wei Peng, Hui-Ming Zhou
Journal of Agricultural and Food Chemistry
 
2.
Phosphorus mobilization in the Yeyahu Wetland: Phosphatase enzyme activities and organic phosphorus fractions in the rhizosphere soils
Jing Zhu, Bo Qu, Min Li
International Biodeterioration & Biodegradation
 
3.
Identification and characterization of a phytase of potential commercial interest
Anne Casey, Gary Walsh
Journal of Biotechnology
 
4.
Current and Future Applications of Phytases in Poultry Industry: A Critical Review
Hesham EL Enshasy, Daniel Joe Dailin, Nor Hasmaliana Abd Manas, Nur Izyan Wan Azlee, , Jennifer Eyahmalay, , Sarah Afiqah Yahaya, Roslinda Abd Malek, Vickpasubathysiwa Siwapiragam, Dalia Sukmawati
Journal of Advances in VetBio Science and Techniques
 
5.
Amelioration in Growth and Phosphorus Assimilation of Poultry Birds Using Cell-Bound Phytase of Pichia Anomala
Ashima Vohra, S.K. Rastogi, T. Satyanarayana
World Journal of Microbiology and Biotechnology
 
6.
Towards Complete Dephosphorylation and Total Conversion of Phytates in Poultry Feeds
K. Zyła, M. Mika, B. Stodolak, A. Wikiera, J. Koreleski, S. Ŝwiątkiewicz
Poultry Science
 
7.
Safety assessment of a novel thermostable phytase
Jana Nováková, Adél Vértesi, Erzsébet Béres, Spas Petkov, Katherine Niederberger, Gaver Van, Gábor Hirka, Zoltán Balázs
Toxicology Reports
 
ISSN:1230-1388