Effect of maize DDGS addition on carcass and meat quality of lambs of native sheep breed

Abstract

The aim of the study was to characterize carcass and meat quality of lambs of native sheep breed, which were fed a diet containing maize dried distiller's grains with solubles (DDGS). The experiment involved 20 ram lambs of the native sheep breed Polish Heath Sheep (Wrzosówka sheep), which were selected from a conservation herd. The lambs received meadow hay and straw ad libitum as well as about 0.4 kg of concentrate per animal. The control group (C) received a standard diet based on cereal components and soybean meal, and in the experimental group (D), soybean meal and part of barley and wheat were replaced with DDGS (the addition of 45% DDGS to the lamb concentrates). The fattening was carried out for 60 days (up to 8 months of age). The diet had no effect on carcass quality, proportion of cuts, basic chemical composition of the meat and cholesterol content. The intramuscular fat of lambs fed the DDGS diet had a higher proportion of linoleic acid (C18:2 n-6) and conjugated linoleic acid, and a lower proportion of linolenic acid (C18:3 n-3), which had a negative effect on the polyunsaturated fatty acids n-6:n-3 ratio in the intramuscular fat. The addition of DDGS to the diet had a beneficial effect on the sensory properties of lamb meat, in particular its taste.

Feeding Agro-Industrial By-Products to Light Lambs: Influence on Meat Characteristics, Lipid Oxidation, and Fatty Acid Profile

“…Compared with CON, the BYP concentrate contained less saturated FA (SFA; 36.0 vs. 25.4%, respectively). This is in agreement with previous studies in which diets including DDGS, DCP, or EOC were tested [8][9][10], and it was attributed to the high proportion of unsaturated FA in DDGS, DCP, and EOC [5,6,30].…”

“…Chemical composition of the meat was within the range reported by others [11,34,47,48] for lambs from different breeds slaughtered at similar body weight. Our results agree with those from other studies reporting that inclusion of corn DDGS [10], DCP [49], or EOC [50] in the concentrate for fattening lambs had no effects on chemical composition of meat. Some studies reported that the inclusion of corn DDGS in the diet of Rambouillet lambs (20% DDGS [51]) and Wrzosówka lambs (45% DDGS [10]) resulted in a more delicate texture.…”

“…Our results agree with those from other studies reporting that inclusion of corn DDGS [10], DCP [49], or EOC [50] in the concentrate for fattening lambs had no effects on chemical composition of meat. Some studies reported that the inclusion of corn DDGS in the diet of Rambouillet lambs (20% DDGS [51]) and Wrzosówka lambs (45% DDGS [10]) resulted in a more delicate texture. Lanza et al [40] observed that feeding 10% of orange pulp and 10% carob pulp to Barbaresca lambs increased the tenderness of their meat.…”

“…Both DCP and EOC are rich in polyphenols and other bioactive compounds [5][6][7], and therefore, they might improve lamb meat composition and might increase meat shelf-life stability [8,9]. In addition, DDGS are by-products of the ethanol industry rich in unsaturated FA and their inclusion in the diet can modify the lipid composition, oxidative stability, and sensory characteristics of lamb meat [10]. The polyphenols in the by-products can also modify the rumen biohydrogenation of the unsaturated FA, resulting in improved quality of the fat of animal products.…”

Replacing cottonseed meal and sorghum with dried distillers’ grains with solubles enhances the growth performance, carcass traits, and meat quality of feedlot lambs

“…Research on DDGS substituting traditional sources of protein and energy in feedlot lamb diets found no differences in major carcass traits ( Van Emon et al, 2012 ; Abdelrahim et al, 2014 ; Kawęcka et al 2018 ), which can be understood as an advantage to the sheep industry by reducing production costs without losing carcass grade ( Schauer et al 2008 ; Whitney and Braden, 2010 ; Crane et al, 2017 ). However, in agreement with this study, some authors ( Felix et al 2012 ; Curzaynz-Leyva et al 2019 ) have reported positive effects of DDGS levels on lamb carcass traits, which might be even more interesting for the sheep industry.…”