Use of Digestible Amino Acids and the Concept of Ideal Protein in Feed Formulation for Broilers

Dari, R. L.; Penz, Antônio Mário; Kessler, Alexandre de Mello; Jost, Hardy

doi:10.1093/japr/14.2.195

Cited by 36 publications

(36 citation statements)

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“…The present study was consistent with the findings of Melesse et al [49] who proved that the quality of protein and amino acid content of feed are known to enhance muscle protein. Therefore, diet formulation based on enriched nutrients mainly protein is clearly superior to improve the nutritional quality of chicken meat [17]. Also the observation from the present study was in harmony with Kingori & Opapeju et al [50,51] noted that diet formulation based on high protein would allow the use of alternative protein sources would improve the precision of least-cost diets and reduce nitrogen excretion from chicken operations.…”

Section: Parameterssupporting

confidence: 86%

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Nutrient Composition and Digestibility of Taro Leaf in the Diets of Chicken and Effects on the Meat Quality

Melese¹

2017

JNHFE

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Introduction: the high cost of cereals and protein supplements and uncertainty about their sustainable supply for poultry pressed the need to search for other potential non-conventional feed sources which are relatively less used for human consumption. For stopping this problem the inclusion of taro leaf meals in poultry ration may supply high nutrients for the consumers because taro is multipurpose crop for food and feed sources. Taro leaf is rich in proteins and can be of supplementary protein, carotene and trace minerals in chicken diets. To achieve maximum efficiency in meat quality and production, properly balanced ration is a pre-requisite and taro could be possible alternative feed ingredients in this study.Objective: This study was conducted to evaluate the feeding value of taro leaf in broiler rations which was conducted at Debre Zeit Agricultural Research Center. Method and analysis:The study was carried out using four treatments in which the treatments were inclusion of TL at 0% (T1), 3% (T2), 5% (T3) and 7% (T4). The analysis undertaken in this study was feed DM, Crude Fiber (CF), Total Ash (TA), Ether Extract (EE), Crude Protein (CP) and functional properties (WHC, WA, WSI and WAI) of feed offered. The nutritional composition of chicken meat and cost benefit analysis were also evaluated to see the overall benefit of feeding taro. A total of eighty day-old Cobb500 broiler chicks were used for the study and lasted 56 days. At the end of the experiment, four birds were randomly taken from each pen and slaughtered for nutrient composition and protein quality analysis. Results:The result obtained from the study shows that variability was found as taro leaf level increase and from cost and benefit analyses of the study, taro leaf meal is cost effective meal when used as replacement of expensive and conventional meal in broilers rations Conclusion: Therefore, the present study encourage using taro leaf meal as a good source of nutrients for broilers like other tropical leaves

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Section: Parameterssupporting

confidence: 86%

“…This might be due to the presence of soluble and digestible fibers in taro [16]. Also it was noted that taro leaf is low in insoluble fiber content and the fiber in taro is easily soluble and digestible [17]. Therefore, feed with low fiber like TL, is desirable for digestibility and improve the bulkiness of the feed.…”

Section: Crude Fiber Contentmentioning

confidence: 99%

Nutrient Composition and Digestibility of Taro Leaf in the Diets of Chicken and Effects on the Meat Quality

Melese¹

2017

JNHFE

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“…Além disso, os aminoácidos dos alimentos devem ser expressos na forma de aminoácidos digestíveis, como forma de maximizar seu uso para síntese proteica, e não como fonte energética, reduzir a poluição ambiental, os custos alimentares e os requerimentos para os aminoácidos limitantes (Dari et al, 2005).…”

Section: Introductionunclassified

Composição química, valores energéticos e digestibilidade verdadeira dos aminoácidos de farinhas de carne e ossos e de peixe para aves

Eyng¹,

Nunes

et al. 2011

R. Bras. Zootec.

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RESUMO -Foram determinados a composição química, os valores energéticos, os coeficientes de digestibilidade e aminoácidos digestíveis verdadeiros de subprodutos de abatedouros, pelo método da "alimentação forçada" com galos cecectomizados. O delineamento experimental utilizado foi o inteiramente casualizado, com duas farinhas de peixe (FP1 e FP2), duas farinhas de carne e ossos (FCO1 e FCO2) e uma dieta jejum, tendo seis repetições e um galo por unidade experimental. products from slaughterhouses were determined by using the method of "forced feeding" with cecectomized roosters. It was used a complete random design, with two types of fish meal (FM1 and FM2), two types of meat and bone meal (MBM1 and MBM2) and one fasting diet, using six replications with one rooster per experimental unit. The values for apparent metabolizable energy (AME), nitrogen corrected AME (AME n ), true metabolizable energy (TME) and nitrogen corrected TME (TME n ), expressed in kcal/kg as fed basis, were 3060, 3188, 2347 and 2191 for FM1, 3238, 3181, 2603 and 2,377 for FM2, 3932, 4057, 3182 and 3026 for MBM1 and 3399, 3710, 2587 and 2501 for MBM2, respectively. Coefficients of metabolizability, in percentage of gross energy (GE), of AME, AME n , TME and TME n were: 61. IntroduçãoA utilização de produtos alternativos na formulação das dietas é uma estratégia que garante rações que atendam às exigências dos animais e ainda reduzam os custos de produção. No caso de ingredientes de origem animal, além da importância econômica, existe a preocupação ambiental, pois é uma forma de dar destino correto aos resíduos gerados pelos abatedouros. Entre os ingredientes alternativos estudados, a literatura destaca a farinha de carne e ossos e a farinha de peixe.

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“…Reliable DAA values permit more efficient poultry ration formulation (Lemme et al, 2004); therefore, the approach to formulate diet on DAA basis instead of total AA (TAA) is considered good. Currently, the nutritionists are formulating feed on digestible protein and AA (Vogt, 1988;Huang et al, 2005) because of their advantage of better growth rate by providing low dietary protein, maximum dietary protein utilization for body protein synthesis, lowering feed cost, less nitrogen excretion and decreased limiting AA requirements (Dari et al, 2005). Ration formulation basing on DAA improved the production performance in broilers (Elwell and Soares Jr., 1975;Fernandez et al, 1995;Rostagno et al, 1995).…”

Section: Importance Of Digestible Aamentioning

confidence: 99%

Digestible Amino Acids: Significance and Prospects in Poultry

Ullah¹,

Ali²,

Mehr-un-Nisa³

et al. 2015

IJAB

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Amino acids (AA) are protein's hydrolytic products. In the recent years, poultry diets are being formulated on digestible AA (DAA) basis rather than total AA. Different techniques including precision-fed rooster assay, precision-fed cecectomized rooster assay, ileal AA digestibility and precision-fed broiler chick assay are used to determine the DAA coefficients of feed ingredients. However, nutritionists consider that the ileal digestibility in growing and adult birds is more accurate than other techniques. In all these digestibility techniques, apparent AA digestibility is corrected for endogenous AA losses to achieve standardized AA digestibility values. The digestibility values, determined using different digestibility techniques, of any feed ingredient vary. This variation in digestibility values can be minimized by adopting same digestibility technique for the estimation of DAA coefficients. Birds fed diets formulated on DAA basis resulted in better growth performance, feed efficiency and production economics. The main objective of this review is to examine the poultry's performance fed diet formulated based on the DAA.

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Use of Digestible Amino Acids and the Concept of Ideal Protein in Feed Formulation for Broilers

Cited by 36 publications

References 10 publications

Nutrient Composition and Digestibility of Taro Leaf in the Diets of Chicken and Effects on the Meat Quality

Nutrient Composition and Digestibility of Taro Leaf in the Diets of Chicken and Effects on the Meat Quality

Composição química, valores energéticos e digestibilidade verdadeira dos aminoácidos de farinhas de carne e ossos e de peixe para aves

Digestible Amino Acids: Significance and Prospects in Poultry

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