Effects of differing levels of glycerol on rumen fermentation and bacteria

El-Nor, S. A. H. A.; AbuGhazaleh, A.A.; Potu, Ramesh Babu; Hastings, Darcie; Khattab, Mostafa S.A.

doi:10.1016/j.anifeedsci.2010.09.012

Cited by 96 publications

(81 citation statements)

References 26 publications

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“…For Jersey cows at the top of lactation, Wilbert et al (2013) recommended crude glycerine as a good alternative energy feedstuff at a dose of up to 120 g · kg -1 dry matter (DM), but this study did not evaluate the composition of rumen juice. The effects of substituting maize with glycerol at different levels on rumen fermentation were studied by Abo El-Nor et al (2010). They found negative effect on some rumen microbes starting from a glycerol concentration of 36 g · kg -1 DM and decreased digestibility of NDF from a glycerol concentration of 72 g · kg -1 DM.…”

Section: Introductionmentioning

confidence: 99%

The comparison of propylene glycol and glycerol as feed additives in early lactation of high producing dairy cows

Pechová¹,

Pečínka²,

Kudrnáčová³

et al. 2014

J. Anim. Feed Sci.

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Section: Introductionmentioning

confidence: 99%

The comparison of propylene glycol and glycerol as feed additives in early lactation of high producing dairy cows

Pechová¹,

Pečínka²,

Kudrnáčová³

et al. 2014

J. Anim. Feed Sci.

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“…The performance of crude glycerin on the synthesis and biohydrogenation of fatty acids in the rumen is not clearly established yet. Abo El-Nor et al (2010) observed a reduction in DNA concentration for Clostridium proteoclasticum and Butyrivibrio fibrisolvens when replaced corn with crude glycerin. These microorganisms play an important and central role in ruminal biohydrogenation process (Maia et al, 2007).…”

Section: Resultsmentioning

confidence: 99%

Carcass traits and meat quality of Nellore cattle fed different non-fiber carbohydrates sources associated with crude glycerin

Fávaro

Almeida

D’Áurea

et al. 2016

Animal

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Crude glycerin, a potential energy source for ruminant animals, has been evaluated, mainly, in diets with high starch content. However, a limit number of studies have evaluated the inclusion of crude glycerin in low starch diets. This study aimed to evaluate the effects of the association of crude glycerin with corn grain or citrus pulp on carcass traits and meat quality of Nellore bulls ( n = 30, 402 ± 31 kg initial weight). The treatment consisted of: CON = control, without crude glycerin; CG10 = 10% of crude glycerin and corn grain; CG15 = 15% of crude glycerin and corn grain; CP10 = 10% of crude glycerin and citrus pulp; CP15 = 15% of crude glycerin and citrus pulp. The performance parameters and carcass traits were not affected by treatments ( P > 0.05). The inclusion of crude glycerin decreased yellow color intensity and increased fatty acids pentadecanoic and heptadecenoic in meat ( P < 0.05), without affecting neither the concentration of polyunsaturated fatty acids nor the relationship of saturated and unsaturated fatty acids. The association of crude glycerin with corn or citrus pulp has no adverse effects on carcass characteristics and meat quality.

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“…In cattle the pattern of ruminal fermentation was modified, however, there was no agreement regarding the obtained results. Glycerol can provide cattle with some benefits such as increased fiber degradation and dry matter digestibility in steers when used at levels ranging 1.11% to 3.33% (Wang et al 2009 a ), however, it can also negatively affect the degradation of crude protein in dairy cows (Wang et al 2009 b ), and also according to Abo El-Nor et al (2010) it reduces NDF digestibility, negatively affecting the process of digestion. In pigs and poultry, glycerol did not bring major changes in relation to digestibility (Swiatkiewicz andKoreleski 2009, Kovács et al 2011).…”

Section: ++mentioning

confidence: 99%

Use of biodiesel co-products (Glycerol) as alternative sources of energy in animal nutrition: a systematic review

et al. 2014

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RESUMENEl reciente aumento en el uso de biodiesel en Brasil y en el extranjero, junto con la disponibilidad de gran cantidad de su residuo, el glicerol, ha generado un gran interés en el uso de este co-producto de varias maneras, entre ellas su aplicación en la alimentación animal. El uso de glicerol en la formulación de dietas despierta interés inmediato para obtener un producto rico en energía y alta eficiencia de utilización por los animales. El objetivo de este estudio fue evaluar los efectos del uso de la glicerina resultante de la producción de biodiesel como suplemento energético en la producción de alimentos para animales, buscando establecer protocolos adecuados para cada especie a partir de estudios anteriores. En los trabajos analizados, hubo estudios con cerdos, vacas, toros, ovejas, gallinas ponedoras y pollos de engorde. Del análisis realizado se puede inferir que el glicerol es un ingrediente alimenticio de remplazo adecuado en dietas en animales de producción.Palabras clave: alimentación, ingrediente alimentario, producción animal, desempeño. SUMMARYThe recent surge in the use of biodiesel in Brazil and abroad, coupled with the availability of large amounts of glycerol, are generating interest in the use of this co-product in several ways, such as its use in animal feed. The use of glycerol in the formulation of diets caused immediate interest to obtain a highly efficient energy rich product to use in animal production. The aim of this study was to evaluate the effects of the use of glycerol resulting from biodiesel production as an energy supplement in animal feed, as well as establishing appropriate protocols for each species based on previous studies. Most of them using pigs, cows, bulls, sheep, laying hens and broilers. It was possible to infer from these studies that glycerol was a food ingredient suitable for replacement in diets of different animal species.

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Effects of differing levels of glycerol on rumen fermentation and bacteria

Cited by 96 publications

References 26 publications

The comparison of propylene glycol and glycerol as feed additives in early lactation of high producing dairy cows

The comparison of propylene glycol and glycerol as feed additives in early lactation of high producing dairy cows

Carcass traits and meat quality of Nellore cattle fed different non-fiber carbohydrates sources associated with crude glycerin

Use of biodiesel co-products (Glycerol) as alternative sources of energy in animal nutrition: a systematic review

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