Determination of apparent metabolizable energy of crude glycerin in broilers chickens

Gianfelici, MF; Ribeiro, Aml; Penz, Antônio Mário; Kessler, Alexandre de Mello; Vieira, M. M.; Machinsky, Taiane Golfetto

doi:10.1590/s1516-635x2011000400006

Cited by 14 publications

(15 citation statements)

References 8 publications

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“…Gianfelici et al (2011) observed diarrhea cases in broilers fed glycerol. According to these authors, the increase of water in the excreta was due to excessive urine production, not due to water retention by the intestine.…”

Section: Discussionmentioning

confidence: 94%

Effect of dietary glycerin supplementation in the starter diet on broiler performance

Henz¹,

Nunes²,

Eyng³

et al. 2014

CZECH J ANIM SCI

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ABSTRACT:This study was conducted to evaluate the performance, carcass composition, and litter moisture of broiler chicks fed crude glycerin for 1-21 days. The study used 1056 male birds distributed in a completely randomized design, with six treatments (0, 3, 6, 9, 12, and 15% crude glycerin from 1 to 10 days), with eight replicates. After the 10 th day, each treatment group was divided into two groups out of which one continued to receive the same glycerin level and the second group started to receive a glycerin-free diet. The parameters weight gain, feed intake, feed : gain, and livability during the first 10 days exhibited a quadratic response (P < 0.05), which predicted higher values at crude glycerin levels of 9.01, 9.02, 9.03, and 6.43%, respectively. From day 1 to day 21, the group receiving crude glycerin throughout the experiment showed a quadratic effect (P < 0.05) for weight gain, feed intake, feed : gain, and livability, with higher values at crude glycerin levels of 6.06, 7.97, 13.11, and 7.69%. As glycerin levels increased, the litter moisture increased linearly (P < 0.05) for both periods. The protein and fat deposition rates and dry matter of the carcasses were not affected (P > 0.05). Considering the period from day 1 to day 21, inclusion of up to 6.06% crude glycerin in the diet provided the best weight gain without affecting the birds' performance, the rate of protein and fat deposition on the carcass, or litter moisture compared with birds fed a glycerin-free diet.

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Section: Discussionmentioning

confidence: 94%

Effect of dietary glycerin supplementation in the starter diet on broiler performance

Henz¹,

Nunes²,

Eyng³

et al. 2014

CZECH J ANIM SCI

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“…According to Gianfelici et al (2011), it is possible to use glycerin as an energy source for poultry nutrition, although it is difficult to avoid problems caused by excessive moisture in the bed. This is caused by constituent minerals present in the glycerin leading to increased wetting of the bedding (GUERRA et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

“…A further concern, according to Cerrate et al (2006), is the high level of potassium, which may cause problems such as wet litter or electrolyte imbalance in the diet. High levels of minerals may exceed the nutritional requirements of poultry, resulting in reduced food intake, increased water intake and thus, higher bed humidity (CERRATE et al, 2006;GIANFELICI et al, 2011). Studies investigating the effects of different glycerin levels in the diets of broilers at different stages of production, including effects on meat quality, can make a valuable contribution to considerations of the use of glycerin on a commercial scale.…”

Section: Introductionmentioning

confidence: 99%

Effects of purified glycerin in balanced diets of chicken broilers treated from 22 to 42 days of age1

Silva

Vaz

Rodrigues

et al. 2017

SCA

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The aim of this study was to investigate the effects of including purified glycerin in the diets of broilers from 22 to 42 days of age. Eighty Cobb 500® lineage broilers were distributed in a completely randomized design (CRD) to one of four treatment groups (0, 2, 4 and 6% of purified glycerin inclusion in feed) and five replicates of four birds. The birds were evaluated for performance (weight gain, feed intake and feed conversion); carcass yield; special cuts yield (thigh, drumstick and breast); muscle colour (L* = lightness, a* = redness, b* = yellowness); and crude protein, ether extract and moisture content of the breast muscle. Inclusion of purified glycerin in the diet did not affect (p > 0.05) any of the growth performance indicators, which demonstrated the technical feasibility of including up to 6% glycerin in the diet. Similarly, there was no effect on carcass yield; special-cut yields; muscle colour (L* = lightness, a* = redness, b* = yellowness); or crude protein, ether extract and moisture content of breast muscle. The inclusion of purified glycerin at up to 6% in the diet proved to be feasible in broilers treated from 22 to 42 days of age.

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“…Estudos tem demostrado que a utilização da molécula de glicerol pelas aves é limitada, isso porque a enzima glicerol quinase apresenta um ponto de saturação, limitando assim a transformação do glicerol em glicerol-3-fosfato (Min et al, 2010). Esse glicerol que não sofre a metabolização é eliminado pelos rins na urina (Dasari, 2007), por ser hidrofílico ao ser excretado carrega junto consigo água, acarretando no aumento na produção de urina (Gianfelici et al, 2011). Em estudo realizado por Romano et al (2014), as aves alimentadas com até 7,5% de GB foram capazes de metabolizar o glicerol mais facilmente do que aquelas alimentadas com 10%, que apresentaram uma concentração sanguínea de glicerol aproximadamente 69% superior.…”

Section: Glicerol: Absorção E Metabolismounclassified

Produção e utilização da glicerina bruta na alimentação de frangos de corte

et al. 2017

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REVISÃO Palavras chave adicionaisCoproduto. Desempenho. Valor energético. resUMo A glicerina bruta (GB) é um coproduto gerado no processo de produção do biodiesel, do qual representa 10% do produto final. A utilização da GB na alimentação de animais não-ruminantes torna-se interessante, pois apresenta um alto teor de energia bruta e, ainda, a sua utilização pode proporcionar o retorno de parte das matérias-primas empregadas na produção de energia à cadeia alimentar, dando origem a produtos de elevado valor nutritivo. O emprego da glicerina na sua forma bruta como alimento energético vem sendo estudado como uma alternativa para a redução do custo com a alimentação animal, além de proporcionar um destino ambientalmente correto a esse coproduto. Porém, os valores enérgicos e a composição da GB, encontrados na literatura, apresentam grande variação, porque no processo de produção do biodiesel podem ser utilizadas diferentes matérias primas bem como diferentes processos. Além disso, a GB pode apresentar altas concentrações de metanol e sal (sódio ou potássio), devido a utilização do metanol e hidróxido de sódio ou potássio durante o processo de produção do biodiesel. Neste contexto, é necessário o entendimento da capacidade da utilização da GB e seus possíveis efeitos adversos em frangos de corte. Perante estes factos, o objetivo desta revisão é caracterizar a GB como um alimento alternativo para frangos de corte, bem como os fatores que devem ser avaliados antes da sua utilização.inforMation Cronología del artículo. Recibido/Production and use of crude glycerin in the feed of broilers sUMMarY Crude glycerin (GB) is a byproduct generated during the production of biodiesel process, which represents 10% of the final product. The use of GB in non-ruminant animal feeding becomes interesting because it presents a high gross energy content, although its use can result in the return of part of the raw materials used in energy production back to the food chain, leading to high nutritional value products. The use of glycerin in its raw form as an energy food has been studied as an alternative to reduce the cost of animal feed, as well as providing an environmentally friendly destination to this coproduct. However, energetic values and GB composition in the literature show wide variation, what may be attributed to the fact that in the biodiesel production process various materials and processes may be used. Furthermore, GB can have high concentrations of methanol and salt (sodium or potassium), due to the use of methanol and sodium or potassium hydroxide during the biodiesel manufacturing process. In this context, the understanding of the utilization ability of GB and possible adverse effects in broilers is required. Thus, the aim of this review is to characterize GB as an alternative feed for broiler chickens, as well as the factors that must be evaluated before its use can be implemented. additional keYwordsCoproduct. Performance. Energy value.A produção brasileira de biodiesel no ano de 2016 alcançou a marca de 3801 m 3 , qu...

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Determination of apparent metabolizable energy of crude glycerin in broilers chickens

Cited by 14 publications

References 8 publications

Effect of dietary glycerin supplementation in the starter diet on broiler performance

Effect of dietary glycerin supplementation in the starter diet on broiler performance

Effects of purified glycerin in balanced diets of chicken broilers treated from 22 to 42 days of age1

Produção e utilização da glicerina bruta na alimentação de frangos de corte

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