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High-throughput, Microscale Protocol for the Analysis of Processing Parameters and Nutritional Qualities in Maize Zea mays L.

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Corn kernel hardness, drying temperature and amylase supplementation affect live performance and nutrient utilization

Hernan A Córdova-Noboa¹, Edgar O Oviedo-Rondón¹, Yilmar Matta²

¹Prestage Department of Poultry Science, North Carolina State University, Campus Box 7608, Scott Hall, Raleigh, NC 27695-7608, USA.

Poultry Science

|August 29, 2021

Summary

Corn drying temperature and kernel hardness impact broiler performance. Exogenous amylase improves growth and feed efficiency, especially with lower drying temperatures and average hardness corn. Strategic manipulation of these factors is key.

Keywords:

amylase supplementation broiler chickens corn kernel hardness drying temperature

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Quantifying Plant Soluble Protein and Digestible Carbohydrate Content, Using Corn Zea mays As an Exemplar

Quantifying Plant Soluble Protein and Digestible Carbohydrate Content, Using Corn Zea mays As an Exemplar

Published on: August 6, 2018

Area of Science:

Animal Science
Nutritional Science
Agricultural Engineering

Background:

Corn drying temperature (DT) affects nutritional quality, but its interaction with endosperm hardness on broiler performance is unclear.
Understanding these interactions is crucial for optimizing broiler diets and feed efficiency.

Purpose of the Study:

To investigate the effects of corn endosperm hardness, drying temperature, and exogenous amylase supplementation on broiler performance, digestibility, and energy utilization.
To determine the interactive effects of these factors on broiler growth, feed conversion ratio (FCR), and starch utilization.

Main Methods:

Two parallel experiments using Ross 708 male broilers with 2 yellow dent corn hybrids (average and hard kernel hardness).
Corn was dried at 35, 80, and 120°C, with or without exogenous amylase (133 g/ton).
A 2x3x2 factorial arrangement of 12 dietary treatments was evaluated using 3-way ANOVA.

Main Results:

Exogenous amylase improved broiler weight gain, FCR, and uniformity, particularly with corn dried at 35°C.
FCR was negatively affected by interactions between kernel hardness and DT, kernel hardness and amylase, and DT and amylase.
Amylase improved FCR in average hardness corn but not hard corn; starch retention decreased with higher DT.

Conclusions:

Corn endosperm hardness, drying temperature, and exogenous amylase significantly influence broiler performance.
These factors interact, necessitating strategic management for optimal broiler growth and feed efficiency.
Exogenous amylase shows benefits, but its efficacy is modulated by corn processing and kernel characteristics.