Performance and digestibility characteristics of finishing diets containing distillers grains, composites of corn processing coproducts, or supplemental corn oil1

Abstract

ABSTRACT:Three experiments evaluated the lipids in distillers grains plus solubles compared with corn or other sources of lipid in finishing diets. Experiment 1 utilized 60 individually fed yearling heifers (349 ± 34 kg) fed treatments consisting of 0, 20, or 40% (DM basis) wet distillers grains plus solubles (WDGS), or 0, 2.5, or 5.0% (DM basis) corn oil in a finishing diet based on high-moisture corn (HMC) and dry-rolled corn (DRC). Cattle fed 20 and 40% WDGS had greater (P < 0.10) G:F than cattle fed 0% WDGS. Cattle fed the 5.0% corn oil had lower overall performance than cattle fed the other diets. Results from Exp. 1 indicated that adding fat from WDGS improves performance, whereas supplementing 5.0% corn oil depressed G:F, suggesting that the fat within WDGS is different than corn oil. Experiment 2 used 234 yearling steers (352 ± 16 kg) fed 1 of 5 treatments consisting of 20 or 40% (DM basis) dry distillers grains plus solubles (DDGS), 1.3% or 2.6% (DM basis) tallow, or HMC. All diets contained 20% (DM basis) wet corn gluten feed (WCGF) as a method of controlling acidosis. No differences between treatments for any performance parameters were observed in Exp. 2. The DDGS may be similar to tallow and HMC in finishing diets containing 20% WCGF. Experiment 3 used 5 Holstein steers equipped with ruminal and duodenal cannulas in a 5 5 Latin square design. Treatments were a 40% WDGS diet, 2 composites, one consisting of corn bran and corn gluten meal (COMP), and one consisting of corn bran, corn gluten meal, and corn oil (COMP + OIL), and 2 DRC-based diets supplemented with corn oil (CON + OIL) or not (CON). Cattle fed the WDGS diet had numerically lower rumen pH compared with cattle fed other treatments.Cattle fed WDGS had greater (P < 0.10) molar proportions of propionate, lower (P < 0.10) acetate:propionate ratios, greater (P < 0.10) total tract fat digestion, and a greater (P < 0.10) proportion of unsaturated fatty acids reaching the duodenum than cattle fed other treatments.Therefore, the higher energy value of WDGS compared with corn may be due to more Page 2 of 38 Journal of Animal Science 3 propionate production, higher fat digestibility, and more unsaturated fatty acids reaching the duodenum.

Animal Performance, Feeding Behaviour and Carcass Traits of Feedlot Cattle Diet Fed With Agro-Industrial By-Product as Fat Source

“…The fat sources used, CSB and SOB at 3 and 5% of EE in the diet, did not affect (P ≥ 0.05) the carcass traits of the animals (Table 4), which is in agreement with Zinn (1989a), Felton andKerley (2004b), Cranston et al (2006), Larraín, Schaefer, Arp, Claus, and Reed (2009),Vander Pol et al (2009, who also found no changes in carcass traits using different fat sources in diets for feedlot cattle.…”

“…Nevertheless, the same authors, in a second 72-day experiment, found no effect of increasing the EE content in diets on DM intake of animals. Vander Pol et al (2009) in two reported experiments with diets ranging from 3.5 to 8.8%EE also found no effect on DM intake of animals.…”

Feeding dried distillers grains with solubles to lactating beef cows: impact of excess protein and fat on cow performance, milk production and pre-weaning progeny growth

“…In the current experiment, the majority of the increase in CP in the DDGS diet was as a result of RUP and RUP was 67% of the CP in the DDGS diet and only 29% of the CP in the CON diet. Also, fat concentrations were elevated in the DDGS diets in the present experiment and a greater percentage of UFAs in DDGS have been reported to bypass ruminal biohydrogenation compared with control diets (Vander Pol et al, 2009). It has been proposed that fat supplementation, specifically PUFAs (Mattos et al, 2000), or a combination of both fat and CP (Engel et al, 2008;Gunn et al, 2014) improve reproductive performance.…”

“…SCFA and MCFAs are mainly derived from de novo synthesis in the mammary gland, whereas LCFA are derived from the diet (Bauman and Griinari, 2003). DDGS contain elevated PUFA and LCFA, which are partially protected from ruminal biohydrogenation (Vander Pol et al, 2009). Additionally, PUFA can hinder de novo synthesis of SCFA and MCFA, resulting in an increased proportion of dietary LCFA in the milk (Bauman and Griinari, 2003).…”

Evaluation of Selected Parameters of Quality and Nutritive Value of Meat of Fattened Bulls Fed Diet with Distillers Dried Grains with Solubles (DDGS) from Wheat or Maize as a Source of Protein

“…They are characterised by a high nutritive value for ruminants, owing to a high content of protein, a high contribution of dietary fi bre being well digestible by the ruminants, and -in the case of DDGS from maize -also by a considerable fat content. Thanks to those properties, the DDGSs may replace concentrates in feed rations for ruminants, and with appropriately balanced structural fi bre -they may also in part substitute for feed roughages [Cyriac et al, 2005;Vander Pol et al, 2009;Martin et al, 2007;Schingoethe, 2006]. In turn, due to a high content of protein, the DDGS may be applied in fatteners feeding as a substitute for high-protein feeds, e.g.…”