Effect of Fractionation of Distillers Dried Grains With Solubles (DDGS) on Pelleting Characteristics of Broiler Diets

Abstract

Cereal Chem. 86(4):393-397Recently, the Elusieve process, a combination of elutriation (air classification) and sieving (screening) was developed to separate fiber from distillers dried grains with solubles (DDGS) to increase DDGS utilization in nonruminant (poultry and swine) diets. Elusieve process produces three products: 1) Pan DDGS, with 5% higher protein content than conventional DDGS, which would be used at higher inclusion levels in broiler diets because of low fiber content; 2) Big DDGS, with nearly the same protein content as conventional DDGS, which would be used at same inclusion levels as conventional DDGS; and 3) Fiber product. The objective of this study was to determine and compare pellet-mill throughput, power consumption, and pellet quality for broiler diets incorporating different levels (0, 10, and 20%) of conventional DDGS and DDGS products from Elusieve process. Poultry oil contents were lower (1.5-1.6%) in diets comprising Pan DDGS and diets without DDGS than in the other diets (2.2-3.1%). The feed throughput was not affected by inclusion levels or type of DDGS. Pellet quality (pellet durability index [PDI]) for diets comprising Pan DDGS (both 10 and 20% inclusion levels) was significantly better than PDI for diets comprising conventional DDGS, Big DDGS, and the diet without DDGS. Better pellet quality of diets comprising Pan DDGS could be due to lower quantity of poultry oil used as well as compositional characteristics such as low fiber and high protein. Diets with Big DDGS had similar pelleting characteristics to those with conventional DDGS. Pellet quality deteriorated at higher inclusion levels of conventional DDGS, Big DDGS, and Enhanced DDGS. Considering that Pan DDGS would be included at higher inclusion levels in broiler diets, superior pellet quality of diets comprising Pan DDGS is beneficial. 2 Corresponding

Effects of feed formulation on feed manufacturing and pellet quality characteristics of poultry diets

“…Srinivasan et al (2009) reported that inclusion of conventional DDGS, at either 10% or 20% of the diet, in pelleted poultry diets caused pellet quality to suffer, while there was no effect on feed throughput at the mill. Consequently, DDGS, the primary by-product of corn fermentation to yield ethanol, is more easily available to poultry integrators and is being seen on a more regular basis in commercial poultry diets.…”

Investigation of the effect of dietary DDGS supplementation on compound feed costs and broiler performance and carcass parameters

“…(21) büyütme ve bitirme dönemi broyler rasyonlarında artan düzeyde DDGS kullanımının performans ve ham protein sindirilebilirliği üzerine olumsuz bir etkisi olmadığını, ancak %15 düzeylerinde kullanımının yem dönüşüm oranını olumsuz yönde etkilediğini bildirmişlerdir. Başlangıç (0-14), büyütme (15)(16)(17)(18)(19)(20)(21) ve bitirme (22-33) dönemi rasyonlarına standart düzeylere (sırasıyla %5, 7 ve 9) karşın yüksek düzeyde (%8, 10 ve 12) mısır DDGS'i kullanımının ise broyler performansını olumsuz yönde etkilediği sonucuna varılmıştır (9).…”

“…Bu çalışmada, daha önceki araştırmalarda belirtilen maksimum sınırlardan daha düşük düzeylerde DDGS kullanılmasının temel sebebi, kullanılan düzeylerin rasyon üretim maliyetleri belirli bir oranda düşürürken performans üzerine olumlu etkisi olabileceği hipotezi üzerinde yoğunlaşılmış olmasıdır. Diğer bir sebebi ise özellikle yüksek düzeylerde DDGS kullanıldığı durumlarda pelet kalitesinin azalması(14,18) ve kondisyonerde harcanan enerjinin artmasıdır(19). Behnke (6) rasyondaki DDGS düzeyinin %5-7 düzeylerini geçtiğinde pelet kalitesinin olumsuz etkilenmeye başladığını vurgulamıştır.…”