NUTRIENT AVAILABILITY OF WHEAT DISTILLERS DRIED GRAINS WITH SOLUBLES (DDGS) FOR BROILERS

V. Pirgozliev, I. Whiting, J. Wilson, S.P. Rose, M.W. Mirza, S. Ivanova, D. Kanev

Abstract: The aim of the present experiment was to investigate the effect of six samples of wheat distiller dried grains with soluble (DDGS) produced by a single production plant (Ensus Limited, UK), on dietary apparent metabolisable energy (AME), N corrected AME (AMEn), total tract dry matter (DMR), and nitrogen retention (NR), and fat digestibility (FD) coefficients, when fed to broiler chickens. A wheatsoybean meal basal diet containing 13.11 MJ/kg AME and 219 g/kg crude protein was produced. Six more diets were obtained by mixing 850 g/kg of the control diet with 150 g/kg of each of the six different wheаt DDGS samples. The diets did not contain any coccidiostats, antimicrobial growth promoters, prophylactic or other similar additives. Each diet was offered to fife pens with two male 7d old Ross 308 broilers. Diets were fed 14 days and at the end of the study excreta were collected. All diets were fed as mash with 5 g/kg of titanium dioxide included as a indigestible marker. Data were statistically analysed by ANOVA. Correlation coefficients were also generated. The ME and digestibility coefficients of the DDGS samples were determined by the slope ratio method. The AME and AMEn value of wheat-DDGS samples varied from 10.07 to 13.44 MJ/kg DM and from 9.64 to 13.07 MJ/kg DM, respectively. There were no differences (P>0.05) in nutrient digestibility variates between DDGS samples. Differences in metabolisable energy values were generally associated with differences in ash and non-starch polysaccharide contents of DDGS samples. The results indicate that there are differences in available energy in different DDGS batches from the same production plant in the same year.

Keywords: AME; batch variability; Broilers; digestibility; wheat DDGS

Date published: 2017-03-15