Influence of an Indigestible Material on Energy Excretion by Roosters and on True Metabolizable Energy of Corn

Tenesaca, L. Gilberto; Sell, J. L.

doi:10.3382/ps.0600623

Cited by 6 publications

(5 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The main reason for this difference is likely the variation in the chemical composition of these feedstuffs, especially in neutral detergent fiber. ME has been shown to be strongly correlated with the content of indigestible materials, such as fiber (Tenesaca and Sell, 1978;Farrell, 1981). The present study supports the conclusion that excreted energy output can be increased with an increase in the neutral detergent fiber content in the feed, thereby reducing the finial ME estimates.…”

Section: Discussionsupporting

confidence: 87%

True Metabolisable Energy and True Amino Acid Availability in Chinese Varieties of Dehulled and Hulled Soybean Meals Determined with Adult Roosters

Wang¹,

Li²,

Gong³

et al. 2003

Asian Australas. J. Anim. Sci

View full text Add to dashboard Cite

Studies were conducted with intact White Leghorn roosters to determine the true metabolisable energy (TME) and the true amino acid availability (TAAA) in five dehulled and hulled soybean meals produced in China. 60 roosters, kept in individual cages, were fasted for 48 h and then tube-fed 50 g of one of experimental feedstuffs and their excreta was then collected for the subsequent 48 h period. Two separate collection periods were used with each meal being fed to 12 roosters. The birds were given a 15-day recovery period between collection periods. An additional 12 roosters were either fasted or fed a protein-free diet in order to estimate the extent of endogenous losses of energy and amino acids in excreta. The average values per bird for nitrogen loss, endogenous energy losses (EEL) and endogenous energy losses corrected to zero-nitrogen balance (EEL n ) were found to be 0.74 g, 47.0 kJ and 21.5 kJ, respectively. It was found that the TME and TAAA values of dehulled soybean meal were higher than those of hulled soybean meal. The TME and nitrogen-corrected TME metabolisable energy values of dehulled soybean meal were 10.58 and 10.74 MJ/kg, respectively, while the corresponding values for hulled soybean meal were 10.03 and 10.27 MJ/kg, respectively. The average indispensable and dispensable amino acid availability of dehulled soybean meal was 92.1 and 93.5%, compared with 89.3 and 91.4% for hulled soybean meal. Dehulled soybean meal would therefore appear to be superior to hulled soybean meal as a source of protein and energy for use in poultry rations.

show abstract

Section: Discussionsupporting

confidence: 87%

True Metabolisable Energy and True Amino Acid Availability in Chinese Varieties of Dehulled and Hulled Soybean Meals Determined with Adult Roosters

Wang¹,

Li²,

Gong³

et al. 2003

Asian Australas. J. Anim. Sci

View full text Add to dashboard Cite

show abstract

“…Muztar and Slinger (1980c) also found that supplementary cellulose had no effect on amino acid excretion. Tenesaca and Sell (1981) found the TME value of corn to decrease as dilution with silica gel increased and attributed the effect to the silica increasing F,,E+U.E. Individually sand and grir (25 g/kg) did not affect the TME value of a diet but in combination they increased TME whereas a cellulose supplement decreased the dietary TME value (Miles et al 1981).…”

Section: Assay Environmentmentioning

confidence: 99%

Measurement of Bioavailable Energy in Poultry Feedingstuffs: A Review

Sibbald¹

1982

Can. J. Anim. Sci.

114

View full text Add to dashboard Cite

The importance of knowing the bioavailable energy (BE) content of poultry feedingstuffs is discussed in terms of economics, feed intake and the environment. The partition of ingested dietary energy is described and the effects of nutrient intake and of the microflora of the alimentary canal are outlined. Indirect biological, physical and chemical assays for BE are described and appraised. Procedures common to several direct bioassays for BE are discussed and points to consider in choosing between total excreta collection and the use of an indicator are presented. Assays for digestible energy, apparent metabolizable energy, true metabolizable energy and net energy are described. Variables affecting estimates of BE such as bird type, assay environment, assay diet and intake, assay design, the nitrogen correction, and metabolic plus endogenous losses are considered and a bioassay is recommended. The review concludes with brief speculation about future developments in the field of feedingstuff evaluation. Key words: Review, Energy, Assays, Methodology, Bioavailable

show abstract

“…Sibbald (1960) encontrou valores mais precisos quando utilizou óxido crômico como indicador fecal, enquanto Potter (1972) concluiu que os melhores resultados foram obtidos pelo método de coleta total de excretas. De acordo com Tenesaca & Sell (1981), 24 horas de coleta foram insuficientes para esvaziar o TGI quando se utilizou sílica diluída em uma ração basal. Semelhantes resultados foram encontrados por Parsons et al (1982), que propuseram o período de 30 horas de coleta como o mais preciso.…”

Section: Introductionunclassified

Influência do tempo de coleta e metodologias sobre a digestibilidade e o valor energético de rações para aves

Rodrigues¹,

Martinez²,

Freitas³

et al. 2005

R. Bras. Zootec.

View full text Add to dashboard Cite

RESUMO -Em um ensaio de digestibilidade, avaliou-se o método de coleta total de excretas e o método do óxido crômico como indicador. Determinou-se a energia metabolizável aparente corrigida pelo nitrogênio retido (EMAn) e os coeficientes de digestibilidade aparente da matéria seca (CDAMS) de uma ração à base de milho e farelo de soja, contendo 19% de PB e 3.100 kcal de EM/kg. Foram utilizados 60 galos Leghorn, com peso de 2.350±105 g. Cada galo foi avaliado pelos dois métodos simultaneamente em períodos consecutivos. Utilizou-se um delineamento inteiramente casualizado, com parcelas subdivididas, para as duas metodologias avaliadas. Com o uso do óxido crômico, os tratamentos foram definidos em um arranjo fatorial 4x5 (quatro níveis de óxido crômico, 0,2; 0,4; 0,6 e 0,8%, e cinco tempos de coleta de excretas, 1 a 5 dias), totalizando 20 tratamentos na parcela (galo), em dois períodos consecutivos (subparcelas), com três repetições por período. Na coleta total de excretas, os tratamentos foram definidos como cinco tempos de coleta (1 a 5 dias) na parcela e dois períodos consecutivos na subparcela, com 12 repetições por período. O uso dos períodos consecutivos de coleta não afetou a EMAn nem o CDAMS. No método de coleta total, os valores de EMAn e CDAMS atingiram um platô acima de dois dias de coleta, comprovando que o tempo de coleta pode ser reduzido para três dias sem comprometer os valores determinados. Os resultados indicaram interação dos níveis de óxido crômico na ração e do tempo de coleta para os valores de EMAn e CDAMS. Concluiu-se que três dias de coleta são suficientes para determinar a EMAn e o CDAMS de rações à base de milho e farelo de soja. Com três dias de coleta e com o uso de 0,665% de óxido crômico na ração, foi possível determinar valores semelhantes de EMAn e CDAMS nas duas metodologias.Palavras-chave: coleta total, energia metabolizável, galos adultos, matéria seca, óxido crômico Effect of Collection Time and Methodologies on the Digestibility and Energy Value of Poultry DietsABSTRACT -A digestibility assay were carried out to evaluate, in consecutives periods, the total excreta collection method and the chromium oxide method as a marker. Apparent metabolizable energy corrected by nitrogen retention (AMEn) and aparent digestibility of dry matter coefficient (ADDMC) of broiler diet based in a ground corn and soybean meal containing 19% crude protein and 3.100 kcal ME/kg. Sixty adult Leghorn cockerels weigh, in average, 2.350±105 g were used. Each cockerel participates in the evaluation of the two methods simutannialy in consecutives periods. A split plots experimental design experiment was used to evaluate the two métodhs. In the chromium oxid method the treatments were defined as a 4x5 factorial arrangemente (chromium oxide levels -0.2, 0.4, 0.6 and 0.8% and collection time -1 to 5 days), totalizing 20 treatments in the plot, in two continuous periods (sub-plots), with three replicates by period. In the total excreta collection method the treatments were defined as five collection times (1 to...

show abstract

Influence of an Indigestible Material on Energy Excretion by Roosters and on True Metabolizable Energy of Corn

Cited by 6 publications

References 16 publications

True Metabolisable Energy and True Amino Acid Availability in Chinese Varieties of Dehulled and Hulled Soybean Meals Determined with Adult Roosters

True Metabolisable Energy and True Amino Acid Availability in Chinese Varieties of Dehulled and Hulled Soybean Meals Determined with Adult Roosters

Measurement of Bioavailable Energy in Poultry Feedingstuffs: A Review

Influência do tempo de coleta e metodologias sobre a digestibilidade e o valor energético de rações para aves

Contact Info

Product

Resources

About