Poultry feed metabolizable energy determination using total or partial excreta collection methods

Dourado, Leilane Rocha Barros; Siqueira, Jefferson Costa de; Sakomura, N. K.; Pinheiro, Sandra Regina Freitas; Marcato, Simara Márcia; Fernandes, João Batista Kochenborger; Silva, J. H. V.

doi:10.1590/s1516-635x2010000200010

Cited by 19 publications

(16 citation statements)

References 8 publications

(11 reference statements)

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“…Embora essa prática não seja usual, uma vez que depende da contabilização exata da quantidade de alimento consumida e das fezes excretadas, tirando o propósito do método dos indicadores, pode ser utilizada quando conveniente para corrigir os valores de digestibilidade obtidos, como relatado por DOURADO et al (2010).…”

Section: Resultsunclassified

“…Por outro lado, a composição nutricional e a biodisponibilidade dos nutrientes das farinhas de origem animal são inconsistentes, pois são infl uenciadas, entre outros fatores, pelo nível de inclusão dos diferentes tecidos animais e pela temperatura e tempo de processamento da farinha (FAHEY & HUSSEIN, 1998).…”

Section: Introductionunclassified

“…No entanto, a composição da dieta, como níveis de minerais e fi bras, pode infl uenciar na estimativa da digestibilidade desse método, devido às alterações na taxa de passagem da digesta e interações do indicador com componentes da dieta (DOURADO et al, 2010). Dessa forma, objetivouse avaliar a digestibilidade de dietas contendo fontes proteicas animal ou vegetal, pela colheita total de fezes e diferentes indicadores.…”

Section: Introductionunclassified

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Metodologias para determinação da digestibilidade de dietas contendo fontes proteicas vegetal ou animal em cães

et al. 2013

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RESUMO Objetivou-se avaliar diferentes metodologias de determinação da digestibilidade em cães, alimentados com duas dietas contendo fontes proteicas animal (farinha de vísceras de aves -FVA) e vegetal (farelo de soja -FS Palavras-chave: ensaio de digestibilidade, indicadores, ingredientesproteicos. ABSTRACT The objective was to evaluate different methods of measuring digestibility in dogs fed two diets containing animal (poultry by products -PBP) and vegetable (soybean meal -SBM) protein sources. The methods evaluated were: total fecal collection (TFC) and indicators: acid insoluble ash (AIA), acid detergent fi ber (ADF) and crude fi ber (CF). Eight dogs were distributed in Cross

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Section: Resultsunclassified

Section: Introductionunclassified

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Metodologias para determinação da digestibilidade de dietas contendo fontes proteicas vegetal ou animal em cães

et al. 2013

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“…The Celite® (acid insoluble ash) was added at 1% of each diet (Dourado et al, 2010). The vitamins and minerals supplementation was similar across all diets.…”

Section: Test Dietsmentioning

confidence: 99%

Calorific Value of Cereals and Cereal by-products in Growing Male Broilers

Ullah¹,

Sarwar²,

Ahmed³

et al. 2016

IJAB

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An experiment was conducted to determine apparent metabolizable energy corrected for nitrogen (AMEn) of commonly used cereals and cereal by-products in poultry diet. Three samples each of corn, rice broken (RB), rice polishings (RP) and wheat bran (WB) were assayed for AMEn by substitution method using 21-days-old broilers. The 12 experimental diets (4 ingredients x 3 samples) were formulated by substituting the corn-soybean meal basal diet with 30% test ingredients. The acid insoluble ash was added at 1% of all diets. The 468 day-old male broiler chicks (Hubbard x Hubbard) were reared on basal diet from day 1 to 13 and thereafter, experimental diets were offered ad libitum to birds from 14 to 21days. Each diet was offered to 36 birds, equally distributed to six replicate pens. The basal diet continued to feed the birds of six replicates from day 14 to 21. The excreta samples were collected from day 19-21 to calculate AMEn. The average daily feed intake (ADFI), average daily gain (ADG) and feed conversion ratio (FCR) were calculated. Data regarding ADFI, ADG, FCR and AMEn were analyzed using GLM procedures of SAS while means were partitioned by t-test. The ADFI, ADG, FCR and AMEn remained unaltered (P>0.05) by feeding diets based on samples of same feed ingredient except the RP and WB. The birds fed RP and WB based diets showed varying (P<0.05) AMEn among the samples. The birds fed corn substituted basal diet had higher (P<0.05) ADG (56.03 g) followed by RB (50.04 g), WB (45.87 g) and RP (43.61 g) diets. The ADFI of broilers fed corn diets was highest (P<0.05) while it was lowest with RB based diets. The birds showed improved (P<0.05) FCR by feeding RB diet followed by corn, WB and RP diets. The average AMEn of RB and corn was 3372 and 3315 kcal/kg, respectively. In cereal by-products, the RP and WB had 1936 and 1760 kcal/kg AMEn, respectively. In conclusion, varying growth pattern of broilers was observed by feeding corn, RB, RP and WB substituted diets. The RB and RP's AMEn was higher in cereals and cereal by-products, respectively.

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“…The use of markers in digestibility experiments, instead of the total fecal collection (TFC) procedure, has the advantage that shorter collection periods may be used and the quantities of ingested feed and excreted feces do not need to be determined (Sales and Janssens, 2003). However, diet composition factors may infl uence diet digestibility estimated by markers because of the changes in digesta passage rate and interactions between the marker and dietary components (Scott and Boldaji, 1997;Dourado et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Effect of β-mannanase on the digestibility of diets with different protein sources in dogs determined by different methodologies1

Félix

Gabeloni

Brito

et al. 2012

Journal of Animal Science

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This experiment aimed at evaluating the effects of including the enzyme, β-mannanase, in dog (Canis lupus familiaris) diets based on either poultry (Gallus gallus domesticus) by-product meal (PBM) or soybean [Glycine max (L.) Merr.] Meal (SBM). The second objective was to evaluate 3 methods for determining energy and nutrient digestibility values in diets fed to dogs: total fecal collection (TFC) and use of aia or crude fiber (CF) as a marker. Eight dogs were allotted to a replicated latin square (4 by 4) design. There were 2 diets based on PBM as the major protein source and 2 diets based on SBM as the major protein source. Within each protein source, 1 diet contained no β-mannanase and 1 diet contained 0.01% β-mannanase. Diets were fed for an adaptation period of 5 d followed by 5 d of TFC. Fecal score (1 = watery feces to 5 = dry, hard pellets), pH, DM, and fecal volume were determined. The apparent total tract digestibility (ATTD) of DM, OM, CP, ether extract (EE), N-free extract (NFE), and GE, and ME content were calculated using the methods of TFC, AIA, and CF. Data were analyzed as a 2 by 2 by 3 split-split-plot design (β-mannanase, protein source, and digestibility calculation procedure). There were interactions between protein source and β-mannanase (P < 0.05). Supplementation of β-mannanase increased ATTD of nutrients and energy and ME (+ 195.3 kcal/kg) and also reduced fecal production in the diet with SBM, but not in the diet that contained PBM. There was an interaction between digestibility calculation procedure and protein source (P < 0.05). The use of AIA overestimated ATTD of the diets containing PBM, but digestibility values estimated based on TFC and CF were not different. Dogs fed diets containing SBM produced more feces with greater moisture content and lower pH compared with dogs fed the PBM diet (P < 0.05). Addition of 0.01% β-mannanase increased (P < 0.05) the digestibility and ME content of the diets containing SBM, but did not improve (P > 0.05) fecal texture. Results indicated that values for ATTD of energy and nutrients in diets containing sbm are not different if they are calculated based on TFC, AIA, or CF, but use of AIA may result in an overestimation of values for ATTD of energy and nutrients in diets containing PBM.

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Poultry feed metabolizable energy determination using total or partial excreta collection methods

Cited by 19 publications

References 8 publications

Metodologias para determinação da digestibilidade de dietas contendo fontes proteicas vegetal ou animal em cães

Metodologias para determinação da digestibilidade de dietas contendo fontes proteicas vegetal ou animal em cães

Calorific Value of Cereals and Cereal by-products in Growing Male Broilers

Effect of β-mannanase on the digestibility of diets with different protein sources in dogs determined by different methodologies1

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