Effects of corn-, wheat- or triticale dry distillers’ grains with solubles on in vitro fermentation, growth performance and carcass traits of lambs

Abstract

. 2010. Effects of corn-, wheator triticale dry distillers' grains with solubles on in vitro fermentation, growth performance and carcass traits of lambs. Can. J. Anim. Sci. 90: 99Á108. The objective of this study was to determine the effect of replacing a mixture of canola meal and barley grain with corn-, wheat-or triticale dry distillers' grains with solubles (DDGS) at 20% of dietary dry matter (DM) on in vitro ruminal fermentation in bovine ruminal fluid and on growth performance and carcass characteristics of lambs. Sixty ram lambs (22.693.0 kg) were randomly assigned to one of four dietary treatments and given individual ad libitum access to feed until they attained slaughter weight. The control diet consisted (DM basis) of 54% barley grain, 16% sunflower hulls, 11.5% beet pulp, 10% canola meal, 2.5% canola oil and 6.0% molasses, vitamins and minerals mixture. For the three DDGS dietary treatments, 10% barley grain and 10% canola meal were replaced with 20% corn-, wheat-or triticale-DDGS. The source of DDGS did not influence (P0.51) dry matter intake (DMI) or average daily gain (ADG). Feed conversion (feed:gain) of lambs fed wheat DDGS was approx. 12% poorer (PB0.05) than that of lambs fed control or corn DDGS diets. In vitro data suggest that the inefficient gain may have been attributable to greater (PB0.05) ammonia concentration at 24 h and lower digestibility of wheat DDGS. Carcass traits, including hot carcass weight, body wall thickness and saleable meat yield, were not affected (P0.60) by dietary treatment. Total saturated, monounsaturated and polyunsaturated fatty acids in subcutaneous fat were also not affected by DGGS source (P]0.13). There was no treatment effect (P 00.33) on concentrations of t11-18:1, but feeding triticale DDGS increased the concentration (P00.04) of c9, t11-conjugated linoleic acid (CLA). In conclusion, DDGS from corn, wheat or triticale can replace a mixture of barley grain and canola meal at 20% of dietary DM without adversely affecting DMI, ADG or carcass characteristics of growing lambs, although wheat DDGS may reduce feed conversion ratio (feed:gain). Including triticale DDGS may also improve the fatty acid profile of subcutaneous fat.Key words: Lamb, corn, wheat, triticale, distillers' grains, performance, carcass characteristics McKeown, L. E., Chaves, A. V., Oba, M., Dugan, M. E. R., Okine, E. et McAllister, T. A. 2010. Incidence des dre`ches se`ches de distillerie de maı¨s, de ble´ou de triticale enrichies de re´sidus solubles sur la fermentation in vitro, sur la croissance et sur les parame`tres de la carcasse des agneaux. Can. J. Anim. Sci. 90: 99Á108. L'e´tude devait e´tablir comment la fermentation in vitro dans le fluide du rumen des bovins, la croissance et les parame`tres de la carcasse des agneaux seraient affecte´s si on remplac¸ait un jusqu'a`20 % de la matie`re se`che (MS) d'une ration de tourteau de canola et d'orge par des dre`ches se`ches de distillerie de maı¨s, de ble´ou de triticale enrichies de re´sidus solubles (DDS). Pour cela, 60 agneaux maˆles (...

Influence of corn-dried distiller’s grain with solubles on growth performance and blood metabolites of Awassi lambs offered a concentrate diet

“…In agreement with this study reported here, Abdelrahim et al (2014) reported that DM intake was not affected when lambs were fed DDGS at 0, 127 and 254 g/kg DM and DM intake was not affected when beef cattle were fed a concentrate diet that contained DDGS at 230 g/kg DM (Beliveau and McKinnon 2008). On the other hand, other studies have found that nutrient intakes were either improved or not affected when growing lambs or beef steers were fed DDGS fed at variable concentrations (Huls et al 2006;Buckner et al 2008;Mckeown et al 2010;Felix et al 2012).…”

In vitro digestibility and nutritional characterization of distillers dried grains with solubles according to the Cornell Net Carbohydrate and Protein System

“…The literature reports that DDGS can be used in animal feed, because it has protein characteristics, which can replace soybean meal, in order to reduce the cost of animal feed (SPIEHS et al, 2002;McKEOWN et al, 2009). …”

Implications for the Feed Industry

“…The DDGS tended to increase the proportion of butyrate in the rumen although the total concentrations of volatile fatty acids were higher on the diet without DDGS. The feed intake of lambs in response to DDGS inclusion does not appear to depend on the source grain of the DDGS, with similar effects being observed on diets containing maize, barley or wheat DDGS at 20 % of a grower diet (McKeown et al, 2010). However, feed efficiency was poorer on the wheat DDGS than on the maize DDGS, due to greater production of ruminal ammonia and lower digestibility of the former.…”