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Evaluation of pea protein isolates as a protein source for broilers

D E Velayudhan¹, G A Mejicanos¹, C M Nyachoti¹

¹Department of Animal Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.

Poultry Science

|October 16, 2018

Summary

Including pea protein isolate (PPI) in broiler diets linearly decreased growth performance, feed intake, and nutrient digestibility. Organ weights were also affected, with spleen weight increasing and digestive tract weights decreasing with higher PPI levels.

Area of Science:

Animal Science
Poultry Nutrition
Feed Science

Background:

Pea protein isolate (PPI) is a potential alternative protein source in animal feed.
Understanding the impact of PPI on broiler performance and physiology is crucial for feed formulation.

Purpose of the Study:

To evaluate the effects of varying dietary inclusion levels of pea protein isolate (PPI) on broiler performance.
To assess the impact of PPI on visceral organ weights and nutrient digestibility in broilers.

Main Methods:

A 21-day study involving 192 broiler chicks fed diets with 0%, 5%, 10%, or 15% PPI.
Performance parameters (ADG, ADFI, FCR) were monitored weekly.
Apparent total tract retention (ATTR) and apparent ileal digestibility (AID) of nutrients and amino acids were determined.

Main Results:

Increasing PPI linearly decreased average daily gain (ADG), average daily feed intake (ADFI), and improved feed conversion ratio (FCR).
Dietary PPI quadratically increased spleen weight and linearly/quadratically reduced proventriculus, gizzard, small intestine, and large intestine weights.
ATTR of dry matter (DM) and crude protein (CP) quadratically decreased, and AID of several amino acids showed linear or quadratic reductions with increasing PPI levels.

Conclusions:

Formulating broiler diets with increasing levels of pea protein isolate (PPI) linearly decreased growth performance.
PPI inclusion impacts broiler organ weights and nutrient digestibility, necessitating careful consideration in feed formulation.

Keywords:

broiler nutrient digestibility organ weight pea protein isolates performance

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