Effects of Elevated Crude Glycerin Concentrations on Feedlot Performance and Carcass Characteristics in Finishing Steers

Chanjula, Pin; Raungprim, Taweeporn; Yimmongkol, S.; Poonko, S.; Majarune, Sutisa; Maitreejet, Wisut

doi:10.5713/ajas.15.0219

Cited by 16 publications

(14 citation statements)

References 23 publications

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“…Our results agree with other studies which reported that feeding glycerol had decreased feed intakes in lambs (Gunn et al, 2010b;Avila-Stagno et al, 2013;Lage et al, 2014), in beef heifers (Parsons et al, 2009), in finishing beef steers (Pyatt et al, 2007;Moore et al, 2011;Hales et al, 2015;Chanjula et al, 2016), in dairy cows (Paiva et al, 2016), and in dairy buffaloes (Saleem et al, 2017). In most of these studies, glycerol replaced corn grain in the concentrate diets.…”

Section: Resultssupporting

confidence: 92%

Growth performance and digestion of growing lambs fed diets supplemented with glycerol

Saleem

Singer

2018

Animal

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Two experiments were conducted to evaluate the effects of replacing corn with an increasing concentration of high-purity glycerol (>99%) on growth performance, economical efficiency, blood constituents and nutrient digestibility of growing lambs. In experiment one, 24 male lambs (initial BW=33.6±6.0 kg; age=6.75±0.75 months) were randomly assigned to one of the three experimental treatments containing 0%, 5% or 10% glycerol to replace corn in concentrate. In experiment two, nine lambs (initial BW=44.7±2.2 kg, age=8.84±0.32 months) were used in a digestion trial with three treatments (three lambs per treatment) with glycerol replacing corn at 0%, 5% or 10% in the concentrate. Total dry matter (DM) intake decreased quadratically (P=0.003) with increasing concentration of glycerol in the diet. Lambs fed glycerol diets had greater average daily gain (P=0.005) and better feed efficiency (P=0.002) compared with the control. Feed costs were also reduced with glycerol inclusion. Glycerol supplementation did not affect serum concentrations of total protein, albumin, globulin, total lipid, cholesterol and glucose concentrations. Glycerol supplementation had no effect (P>0.05) on organic matter and CP digestion, but improved DM (P=0.0003), crude fiber (P=0.10), ether extract (P=0.0002) and nitrogen-free extract (P=0.05) digestion. In conclusion, glycerol can replace corn up to 10% of DM in the diets of growing lambs.

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Section: Resultssupporting

confidence: 92%

Growth performance and digestion of growing lambs fed diets supplemented with glycerol

Saleem

Singer

2018

Animal

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“…Given that feed is the largest cost in livestock production, the use of alternative foods as co-products of biodiesel can be a viable alternative in economic and nutritional terms. Glycerin can be used as an energy ingredient in feed, replacing grains that are more expensive, to increase the profitability of the activity [3].…”

Section: Introductionmentioning

confidence: 99%

Carcass characteristics of lambs fed diets with increasing levels of crude glycerin

Costa

Carvalho

Guim

et al. 2019

Asian-Australas J Anim Sci

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ObjectiveAn experiment was conducted to evaluate the effects of increasing levels of crude glycerin (0%, 6%, 12%, and 18%) used as a substitute for corn in lamb feed on the quantitative characteristics of the carcass.MethodsA total of 40 crossbred Santa Inês lambs that were four months old with a mean initial weight of 21.0±0.8 kg were randomly distributed in four treatments with ten replicates. The animals were slaughtered after 66 days of confinement. The effects of crude glycerin as a replacement for corn in the diet of the lambs on the carcass characteristics, commercial cut weight and yield and carcass measurements were studied.ResultsThere was an increasing linear effect for body weight at slaughter with the replacement of corn by crude glycerin. The dry matter and metabolizable energy intakes, weight of the empty body, hot carcass weight and cold carcass weight showed a quadratic effect, with maximum crude glycerin levels estimated at 10.9%, 9.8%, 10.83%, 11.78%, and 11.35%, respectively. The initial pH was not influenced by the replacement of corn for crude glycerin, while the final pH presented a quadratic effect. The other parameters of the carcass and the weights and yields of commercial cuts were not influenced. There was also no effect of the diets on carcass morphometric measurements, except for the thoracic perimeter and the carcass compactness index, which presented quadratic and linear effects, respectively.ConclusionCrude glycerin can replace up to 18% of corn because it favours muscle tissue deposition without promoting changes in the main carcass characteristics of lambs.

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“…Authors [42,54,55], working with feedlot beef cattle, also observed a reduction in DMI when levels of glycerin were higher than 10%. In others works, even in low concentrations (<10% DM), the inclusion of crude glycerin promoted a drop in DMI for lambs and goats [32,56,57].…”

Section: Effects On Dry Matter Intake and Growth Performancementioning

confidence: 83%

Inclusion of Crude Glycerin in Diets for Sheep

Almeida¹,

Paschoaloto²

2019

Glycerine Production and Transformation - An Innovative Platform for Sustainable Biorefinery and Energy

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Crude glycerin is the main by-product of biodiesel industry. It has a great potential for reducing the feed costs in ruminant feedlot systems without affecting animal health and performance, mainly as a replacement for conventional food energy sources, such as corn grain. In the past years, great advancements have been achieved with crude glycerin utilization. This by-product is mainly composed of glycerol, an energetic compound of great assimilation by rumen microorganisms, being extensively metabolized in the liver. Recent studies with ovine species have demonstrated that high concentrations of glycerol (more than 76% of crude glycerin) can be used without detrimental effect for animals. In the rumen, glycerol is rapidly metabolized by microorganisms to form volatile fatty acids (VFA), mainly propionate and butyrate. In this way, glycerol constitutes an excellent substrate for gluconeogenesis and animal energy generation. At present, the inclusion of up to 20% of dry matter (DM) in a total diet seems to be the most interesting strategy, as it promotes greatest animal performance. However, other studies suggest that high inclusions of crude glycerin (30% of dry matter) could be possible depending on market price and the structure of farm operation, with favorable economic results.

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Effects of Elevated Crude Glycerin Concentrations on Feedlot Performance and Carcass Characteristics in Finishing Steers

Cited by 16 publications

References 23 publications

Growth performance and digestion of growing lambs fed diets supplemented with glycerol

Growth performance and digestion of growing lambs fed diets supplemented with glycerol

Carcass characteristics of lambs fed diets with increasing levels of crude glycerin

Inclusion of Crude Glycerin in Diets for Sheep

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