Protein-Amino Acid Evaluation of Steam-Processed Feather Meal

Baker, David H.; Blitenthal, Robin C.; Boebel, Katherine P.; Czarnecki, Gail L.; Southern, L. L.; Willis, Gawain M.

doi:10.3382/ps.0601865

Cited by 70 publications

(24 citation statements)

References 19 publications

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“…Os coeficientes de digestibilidade dos aminoácidos em farinhas de carne e ossos, penas (BAKER et al, 1981; WANG e PARSONS, 1997) e vísceras (NAS-CIMENTO et al, 1999) são influenciados pelo sistema de processamento, pela temperatura e pelo tempo de cozimento e secagem e pela proporção dos componentes no produto.…”

Section: Resultsunclassified

Uso de rações à base de aminoácidos digestíveis para poedeiras

Silva

Mukami²,

Albino³

2000

R. Bras. Zootec.

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RESUMO -O objetivo deste experimento foi comparar o desempenho de poedeiras alimentadas com rações formuladas com diferentes níveis de lisina e aminoácidos sulfurosos digestíveis. Um total de 144 poedeiras leves, com 24 semanas de idade, foi distribuído ao acaso em três tratamentos com oito repetições de seis aves. Uma ração de alta digestibilidade em aminoácidos (AD) à base de milho e farelo de soja, como controle positivo, foi comparada a outras rações contendo alimentos alternativos em substituição parcial do milho e do farelo de soja. A segunda ração foi formulada com baixa digestibilidade (BD) de lisina e aminoácidos sulfurosos em relação à ração AD. A terceira ração (BD+AA) foi similar à ração BD, mas suplementada com L-Lisina·HCL e DL-Metionina, adicionadas para se obterem níveis de aminoácidos digestíveis iguais à ração AD. As avaliações foram realizadas em três períodos de 28 dias. Não houve efeito das rações sobre consumo de ração, produção, peso e massa de ovos e conversão alimentar por massa de ovo. A qualidade interna do ovo medida pela unidade Haugh e pelos índices de gema e de albúmen também não foi afetada. Os resultados do presente trabalho não confirmaram os benefícios de se formularem rações com base em aminoácidos digestíveis para poedeiras, a partir da informação de aminoácidos digestíveis obtida com galos cecectomizados.Palavras-chave: aminoácidos digestíveis, lisina, metionina, produção e qualidade dos ovos Use of Digestible Amino Acids Based Diets for Laying HensABSTRACT -The objective of this experiment was to evaluate the laying hens performance fed diets with different levels of lysine and sulfur amino acids digestible. A total of hundred and forty-four 24-week-old hens was allotted to a complete randomized design with three treatments, each with eight replicates of six hens. A corn-soybean positive control diet with high amino acids digestibility (HD) was compared to another diet using various by-products to partially replace corn and soybean meal. The second diet was formulated with low digestibility (LD) of lysine and sulfur amino acids as HD diet. The third diet (LD+AA) was similar to LD diet, but supplemented with L-Lysine·HCL and DL-Methionine added to obtain levels of true digestible amino acids equal to HD diet. The evaluations were carried out in three periods of 28 days. There were no differences on feed intake, egg production, egg weight, egg mass and feed:egg mass ratio. The egg quality estimated by Haugh unit and by yolk and albumen index were not affected. The use of digestible amino acids based diet for layers hens was not confirmed in this research from digestible amino acids information obtained with cecectomized roosters.Key Words: digestible amino acids, egg production, egg quality, lysine, methionine Introdução A formulação de rações com base em aminoácidos digestíveis é um novo conceito em nutrição na avicultura moderna, representando avanço em relação à formulação de rações com base em aminoácidos totais, em virtude da maior segurança dos resultados nos ensaios de...

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Section: Resultsunclassified

Uso de rações à base de aminoácidos digestíveis para poedeiras

Silva

Mukami²,

Albino³

2000

R. Bras. Zootec.

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“…Hydrolyzed feather meal (HF) is a rich protein source -74 to 91% crude protein (CP; Baker et al, 1981;Bureau et al, 1999;Grazziotin et al, 2008;Klemesrud et al, 2000), rich in cystine (4 -5% CP), but deficient in lysine (2%) and methionine (1% CP; Baker et al, 1981;Klemesrud et al, 2000). HF is a good source of proteases, polyunsaturated fatty acids and antioxidant peptides, and has a low content of ash and phosphorus, allowing low water pollution formulations (Lasekan et al, 2013;Sugiura et al, 2000).…”

Section: Introductionmentioning

confidence: 98%

Hydrolyzed feather meal as a partial fishmeal replacement in diets for European seabass (Dicentrarchus labrax) juveniles

Campos

Matos²,

Marques

et al. 2017

Aquaculture

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“…Insoluble feather keratin can be converted to feedstuffs, fertilizers, glues and fi lms or used for the production of the enzymes [2][3][4][5]. Currently, feathers are converted to feather meal through chemical processes that requires high energy input and results in loss of essential amino acids [6][7][8]. Microbiological methods for hydrolysis of feather to soluble protein and amino acids represents an environment friendly approach which offers a cheap, and mild reaction condition that prevent loss of valuable amino acids and thus results in nutritionally upgraded feather meal.…”

Section: Introductionmentioning

confidence: 99%

Production of feather hydrolysate by Elizabethkingia meningoseptica KB042 (MTCC 8360) in submerged fermentation

Nagal

Jain

2010

Indian J Microbiol

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A keratinolytic bacterium Elizabethkingia meningoseptica KB042 was isolated from dropped off feathers. The bacterium showed 82.50 ± 0.3% feather degradation when grown on medium containing 10 g/l chicken feathers with initial pH 7.0 at 37°C, 150 rpm in 6 days. The pH of the medium was increased up to 10.02 ± 0.10 during 6 days of incubation. Soluble protein and amino acids concentration in the culture fluid was also found increased until the end of incubation. During the cultivation of strain KB042 on feather as sole source of carbon and nitrogen, the maximum cysteine release was noted on the 3rd day. Varying feather concentration 1.0-2.0% in basal medium resulted in soluble protein release between 1814.42 and 1954.61 μg/ml. The amino acid concentration was found to be maximum, i.e. 937.85 ± 11.9 μg/ml in the cultures grown with 2% feather. The hydrolysate was also found rich in essential amino acids valine, tryptophan, threonine, leucine and cysteine and contains minor amount of methionine and arginine. These data indicate a potential biotechnology for biotransformation and utilization of feather keratin as a source of protein which can be used as animal feed after successful animal trials.

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Protein-Amino Acid Evaluation of Steam-Processed Feather Meal

Cited by 70 publications

References 19 publications

Uso de rações à base de aminoácidos digestíveis para poedeiras

Uso de rações à base de aminoácidos digestíveis para poedeiras

Hydrolyzed feather meal as a partial fishmeal replacement in diets for European seabass (Dicentrarchus labrax) juveniles

Production of feather hydrolysate by Elizabethkingia meningoseptica KB042 (MTCC 8360) in submerged fermentation

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