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Related Experiment Video

Updated: Jun 27, 2026

Characterization of Blood Outgrowth Endothelial Cells (BOEC) from Porcine Peripheral Blood

Characterization of Blood Outgrowth Endothelial Cells (BOEC) from Porcine Peripheral Blood

Published on: January 6, 2022

Exogenous enzymes for pigs and poultry.

M R Bedford¹, H Schulze

¹Finnfeeds International Ltd, Marlborough, Wiltshire, UK.

Nutrition Research Reviews

|December 18, 2008

Summary

Antinutritional factors (ANF) in feed ingredients limit nutrient availability. Understanding factors influencing enzyme efficacy, like xylanase and phytase, improves feed utilization and economic returns in animal diets.

Area of Science:

Animal Nutrition
Biochemistry
Feed Science

Background:

Feed ingredients contain antinutritional factors (ANF) that reduce nutritional value.
Exogenous enzymes (xylanase, beta-glucanase, phytase) are used to improve feed utilization and economic efficiency.
Variability in animal response to these enzymes is a significant challenge.

Purpose of the Study:

To analyze the factors affecting animal response to exogenous enzymes.
To improve the interpretation of trial data concerning enzyme efficacy.
To enhance the economic benefits and reliability of enzyme supplementation in animal diets.

Main Methods:

Literature review of studies on xylanase, beta-glucanase, and phytase.
Analysis of factors influencing enzyme activity and animal response.

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Examination of antinutritional factor (ANF) interactions with enzymes.

Main Results:

Animal response to enzymes varies due to factors like enzyme source, ingredient characteristics, environment, animal age, diet interactions, and health status.
The mode of action for xylanases and beta-glucanases remains debated due to inconsistent data interpretation.
Phytase efficacy in replacing inorganic phosphorus is inconsistent, though less variable than other enzymes.

Conclusions:

A comprehensive understanding of ANF and interacting factors is crucial for accurate data interpretation and improved enzyme efficacy.
Further research into ANF structure will enable the development of more targeted enzymes, increasing success rates and reducing usage.
Enhanced knowledge will boost confidence and economic returns from using exogenous enzymes in animal nutrition.