Amino acid digestibility of meat and bone meals for broiler chickens

Ravindran, V.; Hendriks, W.H.; Camden, B. J.; Thomas, David G.; Morel, P. C. H.; Butts, Christine A.

doi:10.1071/ar02055

Cited by 40 publications

(34 citation statements)

References 20 publications

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“…In effect, it will increase the range of ingredients that can be incorporated, improve the precision of formulation and ensure more predictable bird performance. In a series of studies evaluating canola meal (Ravindran et al, 1998b;Li et al, 2002b), cottonseed meal (Ravindran & Bryden, l999b;Li et al, 2002c) and meat and bone meal (Ravindran & Bryden, 1999c;Ravindran et al, 2002), the beneficial effects of using apparent ileal digestible amino acids in broiler diet formulations to increase the inclusion levels of poorly digestible ingredients were demonstrated. In these studies, as expected, increasing dietary levels of canola meal, cottonseed meal and meat and bone meal on a total amino acid basis significantly lowered weight gains and feed efficiency of broilers.…”

Section: Low Quality Protein Mealsmentioning

confidence: 99%

Amino acid digestibility and poultry feed formulation: expression, limitations and application

Bryden

2010

R. Bras. Zootec.

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-The nutritional value or quality of dietary proteins used for poultry feed formulation varies: amino acid availability is an important measure of protein quality. Determination of ileal digestibility values has become the preferred method for estimating amino acid availability. This review discusses the different approaches to the expression of digestibility results, including correction for endogenous loss and the derivatisation of standardised values. Sources of variation in values include, the assay protocol, anti-nutritional factors in feedstuffs and feed milling. Feed formulating with ileal digestibility values should allow higher dietary inclusion levels of protein feedstuffs of lower quality provided that values of different feedstuffs are additive, the age of the bird and the use of feed enzymes are considered. An Australian data set of "ileal digestible amino acid values in feedstuffs for poultry" that has recently be published is described. This overview is intended to stimulate interest in the generation and application of ileal digestibility as a method for estimating amino acid availability in poultry nutrition.Key Words: amino acids, apparent digestibility, chickens, endogenous loss, feedstuffs, ileum Digestibilidade de aminoácidos e formulação de rações para aves: expressão, limitações e aplicações RESUMO -O valor nutritivo ou a qualidade das proteínas dietéticas utilizadas para a formulação de rações para aves varia: a disponibilidade de aminoácidos é uma medida importante da qualidade da proteína. A determinação dos valores de digestibilidade ileal tornou-se o método preferido para a estimativa da disponibilidade de aminoácidos. Nesta revisão são discutidas as diferentes abordagens para a expressão dos resultados de digestibilidade, incluindo a correção de perdas endógenas e a derivação de valores padronizados. As fontes de variação dos valores incluem o protocolo do ensaio, os fatores antinutricionais na alimentação e a indústria de alimentação. A formulação de rações com base nos valores de digestibilidade ileal deve permitir a inclusão de maiores níveis dietéticos de alimentos com proteína de qualidade inferior, desde que sejam considerados os valores dos diferentes alimentos aditivos, a idade da ave e o uso de enzimas para alimentação animal. Um conjunto de dados australianos de "valores de aminoácidos digestíveis ileais em alimentos para aves" acaba de ser publicado.Esta visão procura estimular o interesse na geração e aplicação de digestibilidade ileal como um método para estimativa da disponibilidade de aminoácidos na nutrição de aves.

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Section: Low Quality Protein Mealsmentioning

confidence: 99%

Amino acid digestibility and poultry feed formulation: expression, limitations and application

Bryden

2010

R. Bras. Zootec.

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“…Marked variations in tryptophan digestibility were observed among samples of fish meal, meat‐and‐bone meal and meat meal, highlighting significant batch‐to‐batch differences. Considerable variability in amino acid digestibility of meat‐and‐bone meal samples29–31 due to differences in raw material and processing system and temperature32, 33 is well documented.…”

Section: Resultsmentioning

confidence: 99%

Total and ileal digestible tryptophan contents of feedstuffs for broiler chickens

Ravindran

Bryden

2006

J Sci Food Agric

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Reliable values of total and digestible tryptophan in components of feed formulation matrices are needed because tryptophan is often the third limiting amino acid in practical poultry diets. However, tryptophan is oxidatively destroyed during acid hydrolysis in routine amino acid analysis and its determination requires a separate analytical procedure. The variability in contents and apparent ileal digestibility for 6-week-old broiler chickens of tryptophan in 74 samples representing 24 feedstuffs are presented in this paper. The average ileal tryptophan digestibility coefficient in wheat was 0.83, in sorghum and triticale 0.75, maize 0.71, soybean meal 0.84, sunflower meal 0.81, canola meal 0.78 and cottonseed meal 0.75. Among the grain legumes, tryptophan in lupins was better digested than that in chickpeas, fababeans and field peas. Among the animal protein meals, the tryptophan digestibility coefficients in fish meal (0.77) and blood meal (0.84) were substantially higher than those in meat meal (0.62), meat-and-bone meal (0.63) and feather meal (0.52). Marked variations in tryptophan digestibility were also observed among samples of fish meal, meat-and-bone meal and meat meal, highlighting significant batch-to-batch differences. For most feedstuffs, considerable variability was observed in the tryptophan concentrations, but such variations were not reflected in digestibility coefficients.

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“…However, our findings are in contrast with a previous work (Bozkurt et al, 2004) indicating notable depression in egg weight when hens were given MBM. The negative correlation between ash content and digestibility of many essential amino acids in MBM samples was found responsible for the depressed egg weight (Ravindran et al, 2002).…”

Section: Resultsmentioning

confidence: 99%

Performance and egg quality of aged laying hens fed diets supplemented with meat and bone meal or oyster shell meal

Catli¹,

Bozkurt²,

Küçükyılmaz³

et al. 2012

SA J. An. Sci.

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Meat and bone meal (MBM) and oyster shell meal (OSM) were supplemented to a basal diet (LMS), either alone or in combination, in order to assess the dietary influences of those complementary Ca sources on performance and egg quality of laying hens. Four hundred and thirty-two Brown-Nick hens, at the beginning of their second production period, were divided into four treatment groups with six replicates each. The final body weight of OSM-fed hens was highest, whereas others did not differ significantly. Hens receiving OSM produced more eggs and egg mass along with considerably greater feed intake than those on all the other treatments. Egg weight was not affected by the treatments except for the lower egg weight of the MBM+OSM treatment. Hens fed a diet supplemented with MBM laid at a rate of 1.14%, 3.66% points lower than those on the control and OSM treatments, respectively. Feed efficiency was not influenced by origin of calcium source. Egg shape index and eggshell weight did not differ among treatments. Eggshell thickness and eggshell breaking strength were higher in hens fed with MBM as compared to control and OSM fed birds. Similar to the tendency in shell quality, MBM inclusion in the diet tended to enhance albumen height and Haugh unit. Dietary treatment with OSM resulted in the highest serum Ca and P concentrations. These results indicate that partially replacing limestone with OSM in the laying hen diet provided significant improvements in egg production performance, whereas most of the egg quality traits were enhanced by dietary supplementation with MBM at 4%. ________________________________________________________________________________

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Amino acid digestibility of meat and bone meals for broiler chickens

Cited by 40 publications

References 20 publications

Amino acid digestibility and poultry feed formulation: expression, limitations and application

Amino acid digestibility and poultry feed formulation: expression, limitations and application

Total and ileal digestible tryptophan contents of feedstuffs for broiler chickens

Performance and egg quality of aged laying hens fed diets supplemented with meat and bone meal or oyster shell meal

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