Feeding value of wet distillers byproducts for finishing ruminants

Abstract

Yearling and calf finishing trials (replicated over 2 yr) evaluated the feeding value of wet distillers byproducts (wet distillers grains and thin stillage). An additional trial estimated the amount of thin stillage bypassing the rumen when consumed by drinking. Yearlings were 5, 10, and 20% more efficient (linear, P < .01; quadratic, P = .05), whereas calves were 2, 6, and 14% more efficient (linear, P < .01) when fed 5.2, 12.6, and 40.0% (DM basis) wet distillers byproducts, respectively, compared with cattle fed a 79% dry-rolled corn diet. Cattle fed 5.2 or 12.6% wet distillers byproducts, or the dry-rolled corn diet, received similar amounts of protein (crude or metabolizable), which exceeded the metabolizable protein requirement of all cattle. Therefore, differences in efficiency were attributed to differences in energy utilization of the diets. Wet distillers byproducts fed at 5.2, 12.6 and 40.0% contributed 80, 62, and 47% more net energy for gain than corn when fed to yearlings and 17, 33, and 29% more net energy for gain than corn when fed to calves, respectively. Wet distillers byproducts averaged 169% the energy value of corn (2.53 Mcal of NEg/kg) when fed to yearlings and 128% the energy value of corn (1.96 Mcal of NEg/kg) when fed to calves. The increased energy values cannot be explained by increased digestibility, but they may be due to a combination of factors (reduced acidosis, increased energy utilization, yeast end products, etc.) that increase the net energy content of distillers byproducts. Approximately 50% of the thin stillage consumed by drinking bypassed ruminal fermentation.(ABSTRACT TRUNCATED AT 250 WORDS)

Evaluation of wheat or corn dried distillers’ grains with solubles on performance and carcass characteristics of feedlot steers

“…Cattle fed corn DDGS exhibited (P B0.01) a quadratic increase in gain:feed (y 00.1564 (0.0003x'0.00003x 2 R 2 00.95 SEP 0.004) with a local minima at the 4.6% inclusion level. These results support Larson et al (1993) who reported cattle fed corn WDGS at 40% of the ration had a 20% improvement in gain:feed. Ham et al (1994) also reported similar results for both corn WDGS and DDGS.…”

“…With regards to feedlot cattle, there has been a significant amount of research on the feeding value of corn-based DDGS as both a protein and energy source, and its associated effects on carcass traits (Ham et al 1994;Klopfenstein et al 2008). In terms of the energy value of corn distillers' grains with solubles, Larson et al (1993) observed that wet distillers' grains with solubles (WDGS) when fed at levels ranging from 5.2 to 40% of DM averaged 2.53 and 1.96 Mcal kg(1 NE g , when fed to yearlings and calves, respectively. These values averaged 169 and 128% the NE g value of dry rolled corn.…”

Field pea (Pisum sativum) inclusion in corn-based lamb finishing diets

“…Dietary net energy was calculated using iterations based on tabular energy values and measured lamb performance (DMI and ADG) following the system described by Larson et al (1993) with modifications made with respect to species (NRC, 1985). Lamb net energy requirements (Mcal per day) for maintenance (NE m R) and gain (NE g R) were calculated using equations: NE m R = 0.056×BW 0.75 and NE g R = 0.276× BW 0.75 ×ADG (NRC, 1985), where average BW (kg) and ADG (kg per day) during the experiment were used.…”

Utilization and biodegradation of starch stillage (distillery wastewater)

“…Owing to the chemical composition of the dry matter basis (Table 2) (but primarily because of the beneficial proportion of the total protein content to the contents of the other nutrients) potato stillage has been regarded as valuable fodder (despite high water content, 90 to 95.3%) (Maiorella et al 1983;Larson et al 1993;Ham et al 1994;Fisher et al 1999;Mustafa et al 2000). It should, however, be noted that the feeding value of the potato stillage (determined as protein and vitamin content) is lower than that of the grain stillage (Maiorella et al 1983).…”