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Effects of cellulase from Trichoderma viride on nutrient utilization by broilers.

K H Nahm, C W Carlson

Poultry Science

|August 1, 1985

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Cellulase enzyme supplementation improved broiler diets with high wheat bran content by enhancing nutrient digestibility and mineral availability. This enzyme treatment positively impacted feed efficiency and nutrient absorption in young chickens.

Area of Science:

Animal Nutrition
Enzyme Technology
Poultry Science

Background:

Wheat bran inclusion in broiler diets can limit nutrient availability due to its high fiber content.
Cellulase enzymes are explored to break down plant cell walls and improve nutrient digestion.

Purpose of the Study:

To evaluate the efficacy of cellulase from Trichoderma viride in broiler diets supplemented with varying levels of wheat bran.
To assess the impact of cellulase on feed consumption, feed-to-gain ratio, and nutrient digestibility.

Main Methods:

Broiler chicks were fed diets with 0%, 10%, or 20% wheat bran, with one group receiving 20% wheat bran plus 0.008% cellulase.
A digestibility study utilized chromic oxide as an indicator to measure nutrient absorption.
Feed consumption, feed-to-gain ratio, and cell wall component digestibility were analyzed.

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Main Results:

Cellulase supplementation significantly reduced feed consumption (P < .01) and improved the feed-to-gain ratio.
Enzyme treatment significantly enhanced the digestibility of cell wall components (P < .01).
Cellulase solubilized minerals (calcium, phosphorus, iron, zinc, copper) and improved iron bioavailability.

Conclusions:

Cellulase from Trichoderma viride is effective in improving the nutritional value of broiler diets high in wheat bran.
Enzyme supplementation enhances nutrient and mineral absorption, particularly iron, making it more available for poultry.
Cellulase offers a potential strategy to optimize broiler performance and nutrient utilization in fiber-rich diets.