Manipulation of factors affecting phytate hydrolysis in enhancing phytase efficacy in poultry: a review

Noraini S., . Manipulation of factors affecting phytate hydrolysis in enhancing phytase efficacy in poultry: a review. pp. 1-26. ISSN 1394-3227

Phosphorus in phytate is largely unavailable to chickens unless they are provided with dietary phytase. Phytase was shown to increase phytate degradation in the crop and proventriculus-gizzard and very little phytate degradation occurred in the duodenum-jejunum or ileum. These previous investigations were conducted on chickens fed corn based diet but not with wheat based diet. Increase in digesta passage or mean retention time (MRT) along the gastrointestinal tract could enhance phytase efficacy as the prolonged reaction time between substrates and phytase may further facilitate phytate dephosphorylation. Dietary fat and fibre supplementation have been shown to influence intestinal MRT in chickens therefore it is expected that inclusion of both dietary fat and fibre could be manipulated to further improve phytase efficacy in broiler chickens. This paper provides a brief review of in vitro phytate hydrolysis phytate hydrolysis in the gastrointestinal tract of broilers and factors that affect phytate hydrolysis that can be manipulated to enhance the efficacy of phytase in poultry diets.

Full text available from: Official URL: http://mjas.my/mjas-v2/rf/pages/journal/v20i1/1-No...

Abstract

Phosphorus in phytate is largely unavailable to chickens unless they are provided with dietary phytase. Phytase was shown to increase phytate degradation in the crop and proventriculus-gizzard and very little phytate degradation occurred in the duodenum-jejunum or ileum. These previous investigations were conducted on chickens fed corn based diet but not with wheat based diet. Increase in digesta passage or mean retention time (MRT) along the gastrointestinal tract could enhance phytase efficacy as the prolonged reaction time between substrates and phytase may further facilitate phytate dephosphorylation. Dietary fat and fibre supplementation have been shown to influence intestinal MRT in chickens therefore it is expected that inclusion of both dietary fat and fibre could be manipulated to further improve phytase efficacy in broiler chickens. This paper provides a brief review of in vitro phytate hydrolysis phytate hydrolysis in the gastrointestinal tract of broilers and factors that affect phytate hydrolysis that can be manipulated to enhance the efficacy of phytase in poultry diets.

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Item Type:	Article
AGROVOC Term:	Phytates
AGROVOC Term:	Broiler chickens
AGROVOC Term:	Biochemistry
AGROVOC Term:	Diet
AGROVOC Term:	Digestive system
AGROVOC Term:	Gastrointestinal system
AGROVOC Term:	Fats
AGROVOC Term:	Fibres
AGROVOC Term:	Hydrolysis
AGROVOC Term:	Ileum
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:28
URI:	http://webagris.upm.edu.my/id/eprint/23634

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