Plano nutricional com diferentes níveis de proteína bruta e energia metabolizável na ração, para frangos de corte

Leandro, Nadja Susana Mogyca; Café, Marcos Barcelos; Stringhini, José Henrique; Filho, Roberto Moraes Jardim; Moura, Keily Alves de; Júnior, Renato Pinto da Silva

doi:10.1590/s1516-35982003000300014

Cited by 19 publications

(28 citation statements)

References 11 publications

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“…The levels of ME and DL did not influence (P>0.05) the PDR. These results were different from those found by Leandro et al (2003), who evaluated different nutritional plans (energy and protein) and observed a linear increase in the PDR. The increase in protein deposition was related to the gradual improvement in the energy / protein ratio of feed, where the lowest levels were insufficient to ensure proper deposition rate.…”

Section: Resultscontrasting

confidence: 99%

Levels of metabolizable energy and digestible lysine for broiler chicks 1-10 days of age

Nunes

Savoldi

Tsutsumi

et al. 2016

SCA

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This study evaluated the effect of different levels of metabolizable energy (ME) and digestible lysine (DL) on the rate of protein deposition, rate deposition body fat and intestinal morphology of broiler chicks 1 to 10 days of age. The study design consisted of 1,152 broilers, weighing 52 ± 5 g, distributed in a completely randomized, 4x4 factorial design, consisting of four levels of ME (2700; 2825; 2950 and 3075 kcal/kg) and four levels of DL (1,080; 1,187; 1,295 and 1,403%), with 16 treatments and three replicates, with 24 poultry in each experimental unit. The protein deposition rate (PDR) and fat deposition rate (FDR) were not affected (P>0.05) by the ME, however, PDR was influenced linearly (P<0.05) by increasing lysine. There was an interaction (P <0.05) between the levels of ME and DL, whose increase resulted in a higher villus height of the duodenum, jejunum and a greater relation villus: crypt ratio of the ileum. Therefore, levels of DL and ME had positive effects on the intestinal development of broiler chicks in the pre-starter phase. Key words: Amino acid. Poultry farming. Energy density. Morphology. ResumoO experimento foi realizado com o objetivo de avaliar o efeito dos níveis de energia metabolizável (EM) e de lisina digestível (LD), sobre a taxa de deposição de proteína, taxa de deposição gordura corporal e morfometria intestinal de pintos de corte de 1 a 10 dias de idade. Foram utilizados 1.152 pintos de corte, com peso médio de 52±5g, distribuídos em delineamento inteiramente casualizado, em esquema fatorial 4x4, constituídos quatro níveis de EM (2700; 2825; 2950; e 3075 kcal.kg -1 ) e quatro níveis de LD (1,080; 1,187; 1,295 e 1,403%), com 16 tratamentos, três repetições e com 24 aves ME cada unidade experimental. A taxa de deposição de proteína (TDP) e de gordura (PDR) não foi influenciada (P>0,05) pelos níveis de EM, no entanto, a PDR foi influenciada de forma linear (P<0,05) pelos níveis crescentes de lisina. Houve interação (P<0,05) entre os níveis de EM e DL, cujo aumento nesses níveis proporcionaram maior altura das vilosidades do duodeno, jejuno e na relação vilo:cripta do íleo. Os níveis de lisina digestível e energia metabolizável apresentam efeito positivo sobre o desenvolvimento intestinal dos pintos de corte na fase pré-inicial. Palavras-chave: Aminoácido. Avicultura. Densidade energética. Morfometria.

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Section: Resultscontrasting

confidence: 99%

Levels of metabolizable energy and digestible lysine for broiler chicks 1-10 days of age

Nunes

Savoldi

Tsutsumi

et al. 2016

SCA

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“…The most relevant characteristic in the formulation of chicks' diets is the concentration of protein and energy, which influence both the diet cost and broiler chicken performance CoRRêA et al, 2008). Nutrition is the factor with most influence on the production cost in modern poultry science representing on average 60% to 70% of the total cost of production (bRum et al, 1993;nAsCimento et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Different nutritional recommendations for broilers: performance and economic analysis

Caniatto¹,

Gameiro²,

Pacheco³

et al. 2014

Bol. Ind. Anim.

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The objective of this research was to compare the effect of different nutritional recommendations on the performance and economics of the production of broiler chickens. A total of 1,200 Cobb-500 line male broilers were placed in a completely randomized design with four treatments and 10 replicates, with 30 animals each. The diets in each treatment were as follows: 1. COBB-VANTRESS (2009); 2. Commercial feed; 3. Rostagno et al. (2005); and 4. Rostagno et al. (2011). The following performance traits were evaluated: feed intake (FI), weight gain (WG), body weight (BW), feed conversion (FC) and productive efficiency index (PEI). The experiment ran while chickens were 1 to 21 and 1 to 42 days old. For the economic analysis, the diet cost and live weight price were considered when calculating the average cost of the diet (ADC) and the gross trading margin (TM). Analysis of variance was used to evaluate ADC and TM performance traits; diets means were compared with Tukey€™s test. In the 1 to 21 day period, there was a higher FI and less efficient FC with diet 1 and more efficient PEI with diet 4. During the 1 to 42 day period, diets 1, 3 and 4 had the highest BW, WG and PEI. TM and ADC show similar results, i.e., commercial feed being less attractive to producers. For the entire experimental period, the nutritional recommendations of COBB-VANTRESS (2009), Rostagno et al. (2005) and Rostagno et al. (2011) had the highest productive and economic performance for broiler production.

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“…Por sua vez, à exigência de PB para crescimento, pode ser modificada pela idade da ave e necessidade de deposição protéica, que acarretaria em maior ou menor eficiência de utilização da PB (SAKOMURA, 2005 Os diversos trabalhos realizados com esta abordagem nutricional (FERGUSON et al, 1998;BLAIR et al, 1999;KERR e KIDD, 1999ab;ALETOR et al, 2000;BERETTA NETO, 2003;LEANDRO et al, 2003;ROCHA et al, 2003;FURLAN et al, 2004;JIANG et al, 2005;KIDD et al, 2005;STERLING et al, 2005;FARIA FILHO 2003AFTAB et al, 2006;SILVA et al, 2006;ROBERTS et al, 2007) (NICHOLSON et al, 2004;GUIZIOU e BELINE, 2005;COUFAL et al, 2006ab, MILLES et al, 2006THORMAN et al, 2006;PELLETIER, 2008) A mesma variação de resultados pode ser encontrada quando avaliados os índices zootécnicos, para os períodos totais de criação ou após os 22 dias de idade das aves, e níveis protéicos da dieta entre 15 e 25% (SABINO et al, 1998;BLAIR et al, 1999;COSTA et al, 2001b;HUSSEIN et al, 2001;ALEATOR, 2000e 2003FARIA FILHO, 2003REZAEI et al, 2004;GU et al, 2008 insaturações. Os ácidos graxos insaturados podem, ainda, ser subdivididos em famílias (GRAZIOLA et al, 2002) .…”

Section: Thiago De Campos Previerounclassified

Efeito de diferentes níveis protéicos e do ácido linoléico conjugado no desempenho, custos de produção e qualidade de carne de frangos de corte

Previero¹

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initial, were allocated in accordance to a completely randomized design, with factorial model 3x3, corresponding in 3 CLA inclusion's levels (0%, 0,5% and 1,0%) and 3 CP's levels (19%,17%,15%). Weight gain reduction and increased feed conversion were only related to decrease of CP inclusion and both of factors, CP and CLA inclusion levels, elevated the economic index parameters.Carcass and breast meat yields decreased due to the reduction of CP addition in diets. The interaction between CLA and CP factors modified in liver size, and both elevated the abdominal fat percents. In relation to parameters analyzed in breast samples, the pH elevated proportionally to CP inclusion, the redness and yellowness were modified by CP or CLA addition and interaction of both were detected to luminosity parameter. About fatty acid composition, the addition of CP only elevated the stearic acid and CLA inclusion improved the saturated fatty acid levels and reduced the monounsaturated fatty acid levels. An improvement on incorporation of CLA isomers was verified due to more inclusion of this product in 19% or 17% CPs diets. In the case of 15% CPs diets, the incorporation of CLA isomers had a maxim limit. In the second assay, using 144 Ross line broilers with the same design and model, a quadratic effect for nitrogen balance was verified due to CP diets and an effect of interaction between CLA and CP inclusion was found to digestibility of dietary CP.

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Plano nutricional com diferentes níveis de proteína bruta e energia metabolizável na ração, para frangos de corte

Cited by 19 publications

References 11 publications

Levels of metabolizable energy and digestible lysine for broiler chicks 1-10 days of age

Levels of metabolizable energy and digestible lysine for broiler chicks 1-10 days of age

Different nutritional recommendations for broilers: performance and economic analysis

Efeito de diferentes níveis protéicos e do ácido linoléico conjugado no desempenho, custos de produção e qualidade de carne de frangos de corte

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