Effects of replacing barley grain with triticale-based dried distillers’ grains with solubles on nutrient digestibility, lamb growth performance and carcass traits

Abstract

. 2010. Effects of replacing barley grain with triticale-based dried distillers' grains with solubles on nutrient digestibility, lamb growth performance and carcass traits. Can. J. Anim. Sci. 90: 87Á98. The objective of this research was to determine the effects of increasing proportions of triticale-based dried distillers' grains with solubles (TDDGS) in the diet on nutrient digestibility, growth and carcass traits of lambs. The control diet contained 72.5% barley grain, 10.0% beet pulp, 9.0% sunflower hulls, 3.0% alfalfa meal and 5.5% mixed supplement, which contained molasses, calcium carbonate, minerals and vitamins. Treatment diets contained TDDGS in place of barley grain at 20, 40 or 60% of diet dry matter (DM). In a growth study, 60 weaned lambs stratified by live weight (26.693.6 kg) were fed one of the four diets to slaughter weight. Additionally, a digestibility study using these diets in a replicated 4 )4 Latin square design was conducted using 12 ram lambs. Increasing dietary allocation of TDDGS in the diet did not affect (P 0.12) DM intake, average daily gain or feed efficiency (feed:gain). At slaughter, cold carcass weight and grade rule scores responded quadratically (P00.04) to increasing TDDGS in the diets. Feeding TDDGS did not affect other carcass traits (P0.22). Total saturated fatty acids and monounsaturated fatty acids in subcutaneous fat were unaffected by TDDGS, whereas polyunsaturated fatty acids increased linearly (P00.03). Concentration of t10, c12-conjugated linoleic acid (CLA) in carcass fat increased linearly (P00.02) with increasing TDDGS, but there was no effect (P]0.20) on concentrations of c9, t11-CLA or t11-18:1. In the digestibility study, DM intake increased linearly (PB0.01) with increasing TDDGS in the diet, whereas digestibility of DM, crude protein and fat responded quadratically (PB0.01). Starch digestibility decreased and ADF digestibility increased linearly (PB0.01), but there was no treatment effect on NDF digestibility (P0.29). Total nitrogen, total phosphorus and soluble phosphorus excretion increased (PB0.01) with increasing TDDGS. In conclusion, TDDGS can be fed in place of barley grain at levels up to 60% in diets for lambs without adverse affects on growth performance or carcass traits, but this practice will lead to an increase in N and P excretion into the environment.Key words: Lamb, digestibility, 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. Substitution de l'orge par des dre`ches se`ches de distillerie de triticale enrichies de re´sidus solubles et incidence sur la digestibilite´des e´le´ments nutritifs, sur la croissance des agneaux et sur les parame`tres de la carcasse. Can. J. Anim. Sci. 90: 87Á98. La recherche devait pre´ciser les conse´quences d'une hausse de la proportion de dre`ches se`ches de distillerie de triticale avec re´sidus solubles (DDST) dans la ration sur la digestibilite´des e´le´ments nutritifs, la croissance et les parame`t...

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

“…Less efficient gain by lambs fed WDDGS compared with those fed the control diet contrasts with previous studies in which feed efficiencies were unaffected when finishing cattle were fed up to 23% WDDGS (Beliveau and McKinnon 2008) or were improved when backgrounding steers were fed 25% WDDGS (McKinnon and Walker 2008). McKeown et al (2010) reported that feed efficiencies were not affected when lambs were fed increasing amounts of TDDGS up to 60% of diet DM.…”

“…Similarly, McKeown et al (2010) reported that hot carcass weight and saleable meat yield were not affected by inclusion of up to 60% of TDDGS in lamb diets. Lack of differences in hot carcass weights among the diets is consistent with the lack of treatment effect on ADG.…”

Effects of replacing barley grain with wheat dry distillers' grains on growth performance, eating behavior, and subcutaneous fatty acid profiles of lambs

“…The trend to increase proportions of vaccenic acid (VA; t11-18:1) is in agreement with a previous study reporting increases in this FA with increased concentrations of WDDGS in the diets of finishing cattle . In contrast, no variations in this FA were reported when using WDDGS (McKeown et al, 2010a) or triticale-based DDGS (McKeown et al, 2010b) in finishing lambs tail back fat. This FA is of major importance as it is the main source of rumenic acid (RA; c9, t11-18:2) via desaturation in ruminant tissues (Griinari et al, 2000) and can also undergo desaturation in humans (Scollan et al, 2006).…”

Molecular Structure and Metabolic Characteristics of the Proteins and Energy in Triticale Grains and Dried Distillers Grains with Solubles for Dairy Cattle

“…28 The chemical analyses of the present data were in general consistent with previous studies in triticale DDGS. 2 (Tables 3 and 4). Triticale grain was lower in the rapidly degradable PA fraction (P < 0.05), the slowly degradable PB3 fraction (PB3, P < 0.01), and the unavailable PC fraction (P < 0.01) and higher in the rapidly degradable PB1 fraction (P < 0.01) and the intermediately degradable PB2 fraction (P < 0.05) than triticale DDGS.…”

“…The nylon bags were placed into a polyester mesh bag (45 cm × 45 cm attached to a 90 cm length of rope) and suspended in the rumen. Bags were added into the rumen according to a "gradual addition/all out" schedule and were incubated for 48, 24,12,8,4,2, and 0 h. 10 The number of bags increased with the length of incubation to ensure that sufficient residue was available for analysis. After incubation, the bags were collected from the rumen and washed under a cold water stream without detergent to remove rumen fluid.…”