Valores de energia metabolizável de alimentos determinados com frangos de corte

Nery, Lidson Ramos; Albino, Luiz Fernando Teixeira; Rostagno, Horácio Santiago; Campos, Anastácia Maria de Araújo; Silva, Carla Rodrigues da

doi:10.1590/s1516-35982007000600018

Cited by 27 publications

(17 citation statements)

References 5 publications

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“…According to Leeson & Summers (2001), it is necessary to correct the estimated values of energy by nitrogen balance because, during a metabolism assay, it is impossible to ensure that all birds will present the same growth rate. The AME values were superior to those of AMEn, and according to Nery et al (2007), this characteristic is normal when metabolizable energy values are determined in growing birds, for in this phase there is higher retention of nitrogen so that there is deposition of protein tissue. Although no effects of plant extracts were verified on the AME and AMEn values, there are studies in the literature that affirm that the presence of the active ingredients in these extracts in the diet promotes increase in the production of pepsin and hydrochloric acid by the organism, contributing to reduction in the stomach and small intestine pH and promoting reduction in the proliferation of pathogenic bacteria and lower competition for nutrients, associated to stimulation to the pancreatic secretion, which improves digestibility of nutrients (Mellor, 2000).…”

Section: Resultsmentioning

confidence: 86%

Herbal extracts in diets for broilers

et al. 2012

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-The objective of this study was to evaluate the effect of feeding herbal extracts for broilers on performance and histology of the intestinal mucosa and its effects on the profiting from the metabolizable energy of experimental diets.For so, two experiments were conducted. In experiment I, the inclusion of different herbal extracts in diets on performance and intestinal histology of broilers was evaluated, and in experiment II, the values of apparent metabolizable energy and metabolizable energy corrected by the nitrogen balance of the experimental diets were studied. Treatments consisted of: positive control diet; positive control + avilamycin; negative control; negative control + 100 ppm of a complex containing three different herbal medicines (pepper, cinnamon and oregano); negative control + 75 ppm garlic extract; negative control + 150 ppm garlic extract. In the performance experiment, which comprised the period of 1 to 40 days of age, 960 male broilers were distributed in a randomized block design, with six treatments and eight replicates, with 20 birds per experimental unit.In experiment II, the method adopted was the traditional of total excreta collection with male broiler chicks in the age of 14 to 24 days, in a completely randomized design, with six treatments and eight replicates with five birds per experimental unit. The intestinal villus height was improved with addition of the composite containing the three herbal extracts; however, crypt depth and villus/crypt ratio were not affected. The use of herbal extract in diets for broilers promotes performance similar to that with the use of antibiotics. Herbal extracts can be incorporated into diets replacing antibiotics without compromising the metabolizable energy of diets, performance or intestinal mucosa for broilers in the period of 1 to 40 days of age.

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Section: Resultsmentioning

confidence: 86%

Herbal extracts in diets for broilers

et al. 2012

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“…2) diferiram dos apresentados pelo NRC (Nutrient ..., 1998) e por Mantovani et al (1999 Nery et al (2007), essa característica é normal quando os valores de energia metabolizável são determinados em aves em crescimento, pois nessa fase ocorre maior retenção de nitrogênio para que ocorra deposição de tecido proteico, que é mais acentuada quando se faz correção pelas perdas endógenas e metabólicas.…”

Section: Resultsunclassified

“…Segundo Nery et al (2007), solo, clima, cultivar e método de processamento, entre outros, determinam a composição nutricional e energética dos alimentos e subprodutos. Assim, é importante a constante atualização dos ingredientes que podem ser utilizados na alimentação animal, com a finalidade de atender às exigências nutricionais e à redução dos custos das rações para as aves.…”

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Avaliação nutricional e energética do farelo de girassol para aves

Tavernari¹,

Morata²,

Ribeiro³

et al. 2010

Arq. Bras. Med. Vet. Zootec.

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RESUMOForam realizados dois ensaios de metabolismo a fim de determinar a energia metabolizável aparente (EMA), por meio do método de coleta total de excretas com frangos, e a energia metabolizável verdadeira (EMV) e a digestibilidade verdadeira dos aminoácidos do farelo de girassol, por meio do método de alimentação forçada com galos cecectomizados. No primeiro ensaio, foi utilizado o delineamento experimental inteiramente ao acaso com 80 frangos Cobb, distribuídos em dois tratamentos, ração referência (RR) e RR mais 20% de inclusão de farelo de girassol e oito repetições e cinco aves por unidade experimental. No segundo ensaio, foi utilizado o delineamento experimental inteiramente ao acaso com 14 galos Leghorn, distribuídos em dois tratamentos, farelo de girassol e jejum, sete repetições e um galo por unidade experimental. O farelo de girassol apresentou 90,0% de matéria seca, 28,1% de proteína bruta, 4.42kcal/kg de energia bruta, 22,4% de fibra bruta, 2,9% de extrato etéreo, 0,8% de fósforo e 0,3% de cálcio. A EMV, a EMV corrigida, a EMA e a EMA corrigida determinadas foram 3.013; 2.200; 2.141 e 1.983kcal/kg, respectivamente. A lisina foi o aminoácido essencial que apresentou a menor digestibilidade e a arginina, a maior.Palavras-chave: frango de corte, alimento alternativo, aminoácido, digestibilidade, energia metabolizável ABSTRACTTwo experiments were carried out to determine apparent metabolizable energy (AME), by the method of total excreta collection using broilers; and true metabolizable energy (TME) and true amino acid digestibility of sunflower meal (SFM), by the method of forced feeding using cecectomized roosters. each, was used. Sunflower meal presented 90,0% dry matter, 28.1% crude protein, 4,429kcal/kg crude energy, 22.4% crude fiber, 2.9% ether extract, 0.8% phosphorus, and 0.3% calcium. TME, AME,013; 2,200; 2,141; and 1,983 kcal/kg, respectively a variações nos custos dessa matéria-prima e afetando diretamente a lucratividade na avicultura. Dessa forma, uma alternativa para otimizar a rentabilidade na produção animal é o uso de alimentos alternativos em substituição parcial ao milho e ao farelo de soja. In the first experiment, a completely randomized experimental design, with two treatments (reference diet (RD) and RD plus 20% SFM inclusion) with eight replicates of five birds each, was applied. In the second experiment, a completely randomized experimental design, with two treatments (SFM vs. fasting) with seven replicates of one rooster

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“…De acordo com Nery et al (2007), o nitrogênio retido como tecido, se catabolizado, favorece as perdas de energia urinária endógena, contribuindo para variações nos valores de energia metabolizável aparente.…”

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Valores de energia metabolizável de alguns alimentos obtidos com aves de diferentes idades

Mello¹,

Gomes²,

Rostagno³

et al. 2009

R. Bras. Zootec.

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RESUMO -Foram realizados quatro ensaios de metabolismo com a finalidade de determinar a energia metabolizável aparente (EMA) e a energia metabolizável aparente corrigida (EMAn) de dez alimentos em aves em diversas idades. Os alimentos testados foram: milho, farelo de soja, sorgo, farelo de trigo, farelo de arroz integral, duas farinhas de penas, duas farinhas de vísceras e plasma sangüíneo. Utilizou-se o método de coleta total de excretas, em delineamento experimental inteiramente casualizado, com 11 tratamentos (dez alimentos e uma ração-referência) e seis repetições. No primeiro ensaio, foram utilizados 528 pintos de corte machos de 10 a 17 dias de idade, totalizando oito aves por repetição; no segundo ensaio, 396 frangos de corte machos de 26 a 33 dias de idade, com seis aves por repetição; no terceiro ensaio, 264 frangos de corte machos de 40 a 47 dias de idade, com quatro aves por repetição; e, no quarto ensaio, 132 galos, com duas aves por repetição.A idade das aves influenciou os valores de EMA e EMAn do farelo de soja, do sorgo, do farelo de arroz integral, das farinhas de penas e do plasma sangüíneo, enquanto, para o farelo de trigo, teve efeito apenas sobre a EMAn.Palavras-chave: composição química, energia metabolizável aparente, frangos de corte Metabolizable energy values of feedstuffs obtained from poultry at different agesABSTRACT -Four assays were carried out to determine the apparent metabolizable energy (AME) and the corrected apparent nitrogen metabolizable energy (AMEn) of ten feeds for poultry at different poultry ages. The feeds studied were:corn grain, soybean meal, ground sorghum, wheat bran, integral rice bran, two kinds of feather meal, two kinds of poultry viscera meal and spray-dried plasma. The method of total excreta collection was used to determine the AME and AMEn values. The broiler chicks were distributed on a completely randomized experimental design, with 11 treatments, six replications, with different number of animals by replication according to the assay. In the first assay, 528 male broiler chicks in the period from 10 to 17 days of age were used, with eight animals per replication. In the second assay, 396 male broiler chicks in the period from 26 to 33 days of age were used, with six animals per replication. In the third assay, 264 male broiler chicks in the period from 40 to 47 days of age were used, with four animals per replication. In the fourth assay, 132 roosters were used, with two animals per replicate. There was an effect of age on the AME and AMEn values of the following feeds: soybean meal, ground sorghum, integral rice bran, two kinds of feather meal and spray-dried plasma, where the oldest broilers provided the highest AME and AMEn values. Wheat bran was affected by age only for the AMEn values.Key Words: apparent metabolizable energy, broilers, chemical composition IntroduçãoO consumo de carne de frango no Brasil apresentou nos anos de 1986 a 2006 crescimento de aproximadamente 400% (UBA, 2006). O conhecimento da composição química e energética dos ingredie...

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Valores de energia metabolizável de alimentos determinados com frangos de corte

Cited by 27 publications

References 5 publications

Herbal extracts in diets for broilers

Herbal extracts in diets for broilers

Avaliação nutricional e energética do farelo de girassol para aves

Valores de energia metabolizável de alguns alimentos obtidos com aves de diferentes idades

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