Effect of enzyme supplementation of diets based on maize or hominy feed on performance and nutrient digestibility in broilers

S Kaczmarek,D Józefiak,A Rutkowski,M Bochenek

doi:10.22358/jafs/66374/2009

Abstract

Two experiments were conducted to determine the nutritional value of hominy feed and impact of an enzyme preparation in broiler chickens diets. In the fi rst experiment, 480 one-day-old chickens were fed 6 experimental diets (treatments) from the day of hatching to 35 days of age with increasing quantities of hominy feed replacing 0, 50 and 100% of maize. The diets were fed with or without enzyme supplementation. Each treatment consisted of 10 replications, 8 birds per replication. During the entire period, chickens from the group receiving maize had a lower (P<0.05) feed conversion ratio (FCR) in comparison with other experimental groups. Body weight gains were also reduced (P<0.05) when maize was substituted by hominy feed. Addition of enzymes improved FCR (P<0.05). Experiment two was carried out using 120, 21-day-old Ross male chickens in 10 treatments, 12 birds per experimental group. Birds fed maize hominy diets had the lowest organic dry matter and N-free extractives apparent digestibility coeffi cient (P<0.05). Hominy diets also had a lower AME N value (P<0.05). Enzyme addition improved the apparent digestibility of all nutrients (P<0.05) except crude fat.

Highlights

Maize is one of the main cereals used in feeding broiler chickens worldwide.It is free of viscous non-starch polysaccharides, the major anti-nutritive factorsENZYME SUPPLEMENTATION – DIGESTIBILITY IN BROILERS present in most other cereals like barley, wheat, and oats, but induces yellow skin pigmentation, which may not be accepted by some consumers.The production of maize in Poland in 2005 reached 1.9 million tons, increasing by over 1.3 million tons since 1999 (FAOSTAT Database, 2006)
The aim of the present study was to compare the nutritional value of maize and hominy feed with or without an enzyme preparation in studies on broiler chickens
When maize was substituted by hominy feed

Summary

Introduction

Maize is one of the main cereals used in feeding broiler chickens worldwide.It is free of viscous non-starch polysaccharides, the major anti-nutritive factorsENZYME SUPPLEMENTATION – DIGESTIBILITY IN BROILERS present in most other cereals like barley, wheat, and oats, but induces yellow skin pigmentation, which may not be accepted by some consumers.The production of maize in Poland in 2005 reached 1.9 million tons, increasing by over 1.3 million tons since 1999 (FAOSTAT Database, 2006). Maize is one of the main cereals used in feeding broiler chickens worldwide. It is free of viscous non-starch polysaccharides, the major anti-nutritive factors. By-products from the processing of maize are good feed for animals, but due to their relatively high fibre content, they are better utilized by cattle and sheep than by poultry and pigs. The feed industry uses maize as a basic energy source in poultry diets, but its price is very high. High-energy and cheaper feeds are by-products from wheat and maize processing (NRC, 1994; Stock et al, 2000; Rodrigues et al, 2001; Boros et al, 2004, Slominski et al, 2004) that can be successfully used in broiler production

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