Effect of Including Dried Distillers Grain With Soluble in Growing Lambs Diet on Digestibility, Some Rumen Parameters, Blood Constituents and Performance

Abstract

The present study was conducted to determine the effects of dried distillers grains with soluble (DDGS) inclusion in lamb fattening diets replacing (partially or totally) soybean meal (SBM) as a protein source and corn as an energy source on growth performance, digestibility, rumen liquor traits, some blood plasma constituents, and economic efficiency. Twenty ¾ Romanov × ¼ Rahmani male lambs at about three months of age were divided randomly into four experimental groups with average live weight (17.7 ± 0.7 kg). Each lamb's group was randomly assigned for one of four experimental diets and was fed in group feeding in mash form. The complete diets comprised 40% clover hay (CH) and 60% concentrate feed mixture (CFM) containing 0% DDGS (T1, control), 10% DDGS (T2), 15% DDGS (T3) or 20% DDGS (T4). The main results showed that the DDGS contained 29% CP, 10% EE, 10% CF, 46% NFE ,5% ash, 18% ADF, 44% NDF, 26% hemi-cellulose, 14% cellulose, 4.1% ADL and 12% NFC. All the total mixed diets had nearly equal values for chemical nutrients except that of NFE content. The inclusion of DDGS in lamb's diets at 10, 15 and 20% resulted in better digestion coefficients of all nutrients and nutritive value as TDN and DCP% in comparison with the control group. The same trend was found also in the concentrations of energy (DE, ME and NE Mcal /kg). Ruminal pH values and NH3-N were slightly changed among treatments. However, VFA's concentrations (meq/100ml) was gradually increased (P≥0.05) with elevating the DDGS level in the diets. The lambs of T1 and T2 recorded nearly similar values of average daily gain; ADG (163.1 and 161.3g), however, those of T3 and T4 had higher ADG (181.0 and 192.0g) than the control by about 11.0 and 17.7%, respectively. The intake of TDN and DCP were gradually increased with elevating DDGS level in the diet from 0 up to 20%. The DDGS inclusion in lamb diets did not show positive effects concerning feed conversion as g TDN or g DCP/g gain, meanwhile, the lambs of T3 and T4 recorded better values of DM conversion than the control (T1) by about 7.1 and 9.8%, respectively. Economic efficiency was gradually improved with elevating DDGS level in the diet where it was better for T2, T3 and T4 groups than the control (T1) by about 11.0, 34.6 and 45.6%, respectively. It may be concluded that in general, the inclusion of DDGS instead of corn and SBM at any level resulted in better performance, feed utilization and economic efficiency.

Impact of Replacment of Cotton Seed Meal by Graded Levels of Dried Distillers Grains with Solubles (DDGS) on Lactating Zaraibi Goats Performance

“…NH3-N concentration significantly (P<0.05) increased with increasing DDGS levels in the tested rations , compared with control the ration. The present findings are agreed with Gabr et al (2010a) who reported that the highest values of NH3-N concentration were recorded by adding different DDGS levels (10, 15 and 20%) in tested rations at 3 hrs post-feeding with growing lambs.…”

“…It was clear that DDGS contained, 27.7 % CP, 8% CF, 8.8% EE, 50.0% NFE and 5.5% Ash. These values are more close to those recorded by Rosentrater , 2007, Gabr et al (2010a) , Hardman, (2013 and Abd El-Rahman et al (2014). The chemical composition of CSM used herein was more close to that given by the latter author with some few exceptions.…”

“…As for liver enzyme activities, it could be noticed that ALT and AST concentrations were tended to gradually increased as the level of DDGS increased. Similar results reported by Gabr et al (2010a) , Ghoneem and Mahmoud (2016) and Etman et al(2012). In general, liver function might be affected by other factors such as age, body weight or administrative circumstance related to good or bad feeding (Etman et al, 2011).…”

“…The TVFA's concentration significantly (P<0.05) influenced by DDGS inclusion, since the highest values were recorded with the highest DDGS level with R4 ration at 3 hrs post-feeding. Simillar results have been reported by Gabr et al (2010a). In this field, Soliman et al (2013) reported that the TVFA's significantly (P<0.05) increased with 20% DDGS ration, compared with other tested rations and they mentioned that TVFA's concentration in rumen liquor could be influenced by several factors such as the amount of easily fermentable carbohydrates, ration composition, ruminal pH beside the digestibility of organic matter and ammonia concentration.…”

“…Chemical composition of DDGS may be various though, it depends mostly on the bio-fuel production process and the quality of the grain (Omer et al, 2015). A primary ethanol industry co-product; DDGS, is an excellent source of energy and protein for beef cattle (Klopfenstein et al2008) dairy cattle and sheep (Gabr et al, 2010a andSoliman et al,2013) , rabbits (Gabr et al,2010b) and fish (Gabr et al, 2013) . However, more information is still required on feeding DDGS to lactating farm animals in Egypt, especially goats .The main objectives of this study were to determine the effects of DDGS inclusion in lactating Zaraibi goats replacing (partially or totally) cotton seed meal (CSM, 22% of CFM) as a protein source and corn as an energy source on their productive performance, digestibility, some rumen parameters, some blood constituents and economic efficiency.…”