Effects of Elevated Crude Glycerin Concentrations on Feedlot Performance, Carcass Characteristics, and Serum Metabolite and Hormone Concentrations in Finishing Ewe and Wether Lambs

Gunn, Patrick J.; Schultz, A.F.; Emon, Megan L Van; Neary, M.K.; Lemenager, R. P.; Rusk, C.P.; Lake, Scott

doi:10.15232/s1080-7446(15)30597-0

Cited by 52 publications

(67 citation statements)

References 18 publications

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“…Gunn et al (2010a), when studying lambs slaughtered at 55 kg, did not observe any effect from zero to 45% of glycerin on carcass weight, in agreement with the results observed in this study. The cooling loss (CL) means of 0.72; 0.80; and 0.58 % in feeds with and without glycerin (Table 3) were low, when compared with those obtained by Macedo et al (2006), who observed that confined Corriedale, crossbred Bergamácia × Corriedale and crossbred Hampshire × Corriedale lambs had an average of 3.35% CL, which could indicate that diets with glycerin did not influence the CL, since they did not differ from control groups.…”

Section: Resultssupporting

confidence: 92%

“…The results concerned with average daily gain, DM ingestion in relation to BW and average DM intake (Table 2) The average daily intake of DM observed in this study was superior to that reported by Gunn et al (2010a) in confined wethers and ewes, presenting an average daily intake of: 1.13; 1.19; 1.0 and 0.90 kg per animal per day with, respectively, 0, 15, 30 and 45% glycerin per kg in their total feed.…”

Section: Resultscontrasting

confidence: 77%

“…This result goes against those by Pyatt et al (2007), who observed an improvement on the average daily gain of bovines, and with Gunn et al (2010aGunn et al ( , 2010b, who, when studying sheep, observed a decrease on weight gain from the moment glycerin was 30% of the total diet.…”

Section: Resultscontrasting

confidence: 72%

“…The confinement period varied by animal as each reached weights of between 34 and 36 kg, and were then slaughtered, but no variations relating to the feedlot period were observed (P>0.05) ( Table 2), which differs from Gunn et al (2010a), who reported that sheep fed on 30% or more glycerin needed more time to reach the desired slaughter weight, which is justified by the decrease in DM ingestion.…”

Section: Resultsmentioning

confidence: 86%

“…There was no dietary effect (P>0.05) on feed conversion, nor on average daily gain (Table 2). Gunn et al (2010a;2010b) recognized that upon increasing glycerin in the diet, feed conversion was improved, although the daily weight gain decreased. Parsons et al (2009), when studying confined heifers, ascertained an improvement on the feed conversion efficiency when adding up to 12% glycerin to the diet, yet additions of more than 16% glycerin had the opposite effect, decreasing the feed conversion efficiency.…”

Section: Resultsmentioning

confidence: 99%

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Performance and carcass characteristics of lambs fed on diets supplemented with glycerin from biodiesel production

et al. 2011

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-This study was carried out to evaluate the influence of diets supplemented with glycerin as an alternative ingredient to corn on the performance and carcass characteristics of Santa Inês confined lambs. The study involved 27 lambs aged 90 days, having an average initial weight of 26.33 ± 0.15 kg. Lambs were randomly distributed into a control group and groups with diets containing 15 and 30% glycerin in the total feed. Diet was formulated with 40% roughage and 60% concentrate.The experimental design was completely randomized, and the production performance and carcass characteristics were analyzed by analysis of variance, and the subjective carcass characteristics, by general linear models. The daily average gain was 0.21, 0.24 and 0.23 kg/day; feeding conversion was 6.39, 5.73 and 5.92 kg of diet/kg BW for control animals, and those fed with 15 or 30% glycerin, respectively, without treatment differences. Lambs were slaughtered, weighing 34 to 36 kg, and average weight of the cold carcass and commercial carcass yield were evaluated. The results were, respectively, 15.97 kg and 49.18%, for control, 15.96 kg and 48.31% for animals fed with 15% glycerin, and 15.79 kg and 47.87% for those treated with 30% glycerin, with no treatment effects. Meat tenderness and cooking loss averages were not affected by diets, with 5.07 kg and 40.45%, 5.10 kg and 40.81%, and 5.27 kg and 39.04%, respectively, for control, and those fed with 15 or 30% glycerin. Therefore, it is possible to conclude that up to 30% of medium purity glycerin in the dry matter of the diet can be used to replace corn, without any negative effect on lamb performance or carcass characteristics.

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Section: Resultssupporting

confidence: 92%

Section: Resultscontrasting

confidence: 77%

Section: Resultscontrasting

confidence: 72%

Section: Resultsmentioning

confidence: 86%

Section: Resultsmentioning

confidence: 99%

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Performance and carcass characteristics of lambs fed on diets supplemented with glycerin from biodiesel production

et al. 2011

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Effect of crude glycerin levels on meat quality and carcass characteristics of crossbred Boer goats

Bezerra

Santos

Carvalho

et al. 2022

Food Science & Nutrition

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This study assessed the effects of four levels of crude glycerin (0, 50, 100, and 150 g/kg dry matter (DM) basis) in the diet of Boer crossbred goat kids on the qualitative and quantitative carcass characteristics as well as meat quality. Thirty‐two crossbred, castrated Boer x undefined breed goat kids with an initial average weight of 17.8 ± 2.2 kg between 3 and 4 months of age were distributed across a complete randomized experiment with four treatments and eight replicates. The DM intake linearly decreased (p < .05) as the crude glycerin inclusion level in the diet increased. Crude glycerin levels decreased (linear effect, p < .05) empty body weight, hot dressing percentage, and cold dressing percentage. Conformation and subcutaneous fat thickness were not affected (p > .05) by dietary crude glycerin. Crude glycerin levels decreased (linear effect, p = .03) rib eye area of the Longissimus dorsi muscle, however, did not affect color, cooking loss, and shear force. The crude glycerin can be included up to 50 g/kg DM in the diet of crossbred Boer goats without negatively affecting carcass characteristics and meat quality. It can be recommended as an energy source in finishing diets.

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Crude glycerin combined with sugar cane silage in lamb diets

Filho

Azevêdo

Carvalho

et al. 2015

Trop Anim Health Prod

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This study aimed to evaluate the effect of the level of crude glycerin (CG) on in vitro fermentation kinetics (0, 20, 40, 60, and 80 g/kg DM of sugar cane silage), on in vitro neutral detergent fiber (NDF) degradation (0, 30, 60, and 90 g/kg DM of sugar cane silage), and intake and digestibility of nutrients and nitrogen balance (0, 20, 55, 82, and 108 g/kg DM of sugar cane silage) in lambs. The in vitro trials were conducted in a completely randomized design with three repetitions. The in vivo trial was conducted in a Latin square design with five repetitions (5 × 5). For variables in which the F test was considered significant, the statistical interpretation of the effect of CG substitution levels was carried out through regression analyses. Kinetic parameters were not affected by CG inclusion. On in vitro NDF degradation, a significant effect of CG levels was observed on the potentially degradable fraction of NDF, the insoluble potentially degradable fraction of NDF, and the undegradable NDF fraction. The intake and digestibility of nutrients and nitrogen balance were not affected by CG inclusion. The CG levels change in vitro NDF degradability parameters; however, there were no changes in animal intake, digestibility, and nitrogen balance with the inclusion levels used.

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Effects of Elevated Crude Glycerin Concentrations on Feedlot Performance, Carcass Characteristics, and Serum Metabolite and Hormone Concentrations in Finishing Ewe and Wether Lambs

Cited by 52 publications

References 18 publications

Performance and carcass characteristics of lambs fed on diets supplemented with glycerin from biodiesel production

Performance and carcass characteristics of lambs fed on diets supplemented with glycerin from biodiesel production

Effect of crude glycerin levels on meat quality and carcass characteristics of crossbred Boer goats

Crude glycerin combined with sugar cane silage in lamb diets

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