Apparent ileal amino acids digestibility of diets with graded levels of corn DDGS and determination of DDGS amino acids digestibility by difference and regression methods in broilers

Abstract

This study was conducted to determine apparent ileal amino acids digestibility (AIAAD) of diets with different levels of corn distiller's dried grains with solubles (DDGS) and to determine AIAAD of corn DDGS by difference and regression methods in broiler chickens. One hundred and fifty 30-day-old male broiler chickens were used in the experiment. The corn DDGS were incorporated into basal diets at graded levels (0, 4, 8, 12, and 16%). All birds were killed at the age of 35 days and the contents of the lower half of the ileum were collected. AIAAD was calculated using chromic oxide as the indigestible marker. For AIAAD of DDGS determination, difference and regression methods were used. AIAAD of Lys (78.6%) and Met (91.3%) were the significantly highest in the diet without DDGS in comparison with other diets (P < 0.01). AIAAD of the rest of essential and nonessential amino acids were the lowest in the diet with 8% of DDGS in comparison with the diets with 0 or 16% of DDGS (P < 0.01). The apparent ileal crude protein digestibility was also the lowest in the diet with 8% (61.8%) of DDGS (P < 0.01). The highest differences in AIAAD of DDGS determined by the difference method and in the diet without DDGS (basal diet) determined by the regression methods were found in Lys and Met. There were very low differences between DDGS and basal diet in AIAAD of nonessential amino acids, except Ala and Asp. These results show that higher levels of DDGS decrease AIAAD.

Apparent ileal digestibility of protein and amino acids in protein feedstuffs and trypsin activity in the small intestine in broiler chickens

“…Arguably, the destruction may well occur in the soluble components of DDGS, such as the reducing sugars (Batal and Dale 2006;Soares et al 2012). The low amino acid digestibility is evident for amino acids that are present in smaller amounts in DDGS (Lys, Met) (Foltyn et al 2014). In formulating feedstuff including DDGS, attention must be paid to Lys level and/or digestible Lys level and only high quality DDGS should be used.…”

​Effects of Lysine and Methionine Concentration in Diet on Performance, Slaughter Variables and Serum Biochemical Profile in Slow Growing Chicks fed Rice Based Distillery Dried Grain with Solubles

“…Kim et al (2009) recorded low standardised ileal digestibility of all the indispensable amino acids in corn-DDGS in comparison to soyabean meal in pigs. In broiler chickens, apparent ileal digestibility of Lys and Met was reduced with corn-DDGS inclusion in diet (Foltyn et al, 2014). Amino acids in DDGS are known to be less digestible to chickens causing their deficiency when DDGS is used in diet (Stein et al, 2006).…”

Development and Utilization of Corn Processing by-Products: A Review

“…The results showed that the apparent digestibility of corn DDGS is beneficial to Silurus Glanis, and 30% DDGS can be added into the Silurus Glanis' diet without affecting the growth performance and nutrient utilization of Silurus Glanis [115]. Determination of the effect of different levels of corn DDGS feed on broiler amino acid digestibility showed that higher levels of DDGS could reduce broiler amino acid digestibility [116]. Some scholars have used a combination of alkaline and enzymatic methods to extract cellulose from corn kernels and DDGS.…”