Efeito do Nível de Lisina da Dieta e do Sexo Sobre o Desempenho e Rendimento de Carcaça de Frangos de Corte

Almeida, I. C. L.; Mendes, Ariel Antônio; Garcia, Rodrigo Arroyo; Takita, TS; Moreira, Joerley; Garcia, Edivaldo Antônio

doi:10.1590/s1516-635x2002000100002

Cited by 9 publications

(22 citation statements)

References 4 publications

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“…This is done by the earned value of the cuts and also by the quality demand and convenience in food preparation by the consumer. Thus, the breast becomes the most important section as it represents about 50% of the total protein of chicken (Almeida et al, 2002); with more ability to produce food derived as seasoned products, pre-cooked and frozen. Accordingly, for the creation of chickens after 49 days old, the Cobb 500 strain may become more attractive to the broiler industry integrators, since it obtained the lower feed intake and higher breast yield and breast meat when compared to the strains Ross 308 and Hubbard Flex.…”

Section: Resultsmentioning

confidence: 99%

“…In the production of commercial poultry strains intended for meat cuts, with the main objective of breast meat production, lysine is the principal amino acid to be handled in ration (Almeida et al, 2002; Araújo, 2001). Although lysine is not the first limiting amino acid for poultry, it is used as amino acid basis for calculating the optimal protein, as it is used almost exclusively for body protein synthesis and does not participate in metabolic interactions with other amino acids (Amarante Júnior et al, 2005;Meza et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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<b>Digestible lysine for broilers from different commercial strains in the final phase

Dalólio

Moreira

Vaz

et al. 2016

Acta Sci. Anim. Sci.

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ABSTRACT. This study aimed to evaluate different digestible lysine levels in diets for broilers chickens from different commercial strains, from 49 to 56 days of age, on performance and carcass characteristics. A total of 432 male broilers from 49 days old were used, with an average weight of 3560±250 g. It was used a completely randomized design in a factorial arrangement 3x4, and the birds, from three strains (Cobb 500, Hubbard Flex and Ross 308) were divided into four levels of digestible lysine (0.800, 0.950, 1.100 and 1.250%), with four replicates of 12 birds each. It was evaluated the weight gain, feed intake, feed conversion ratio, carcass yield, breast yield, breast meat yield and the yield of the thigh and drumstick. There was no interaction between lysine levels and commercial strains of broiler chickens. The different lysine levels did not influence (p ≥ 0.05) performance and carcass yield. There are significant differences between strains for feed intake and carcass characteristics. The Cobb 500 strain had higher breast yield and breast meat (p < 0.05), while the Hubbard Flex and Ross 308 strains had higher yield of the thigh and drumstick (p < 0.05).Keywords: amino acids, breast meat, performance, genotypes, carcass yield.Lisina digestível para frangos de corte de diferentes linhagens na fase final de criação RESUMO. Objetivou-se avaliar diferentes níveis de lisina digestível em rações para frangos de corte de diferentes linhagens comerciais na fase de 49 a 56 dias de idade sobre o desempenho e características de carcaça. Foram utilizados 432 frangos de corte machos de 49 dias de idade, com peso médio inicial de 3560±250 g. Utilizou-se o delineamento inteiramente casualizado em arranjo fatorial 3x4, sendo que as aves, oriundas de três linhagens (Cobb 500, Hubbard Flex e Ross 308), foram distribuídas em quatro níveis de lisina digestível (0,800; 0,950; 1,100 e 1,250%), com quatro repetições de 12 aves cada. Avaliou-se o ganho de peso, o consumo de ração, a conversão alimentar, o rendimento de carcaça, o rendimento de peito, o rendimento de carne de peito e o rendimento de coxa e sobrecoxa. Não houve interação entre os níveis de lisina digestível e as linhagens comerciais de frangos de corte. Os diferentes níveis de lisina não influenciaram (p ≥ 0,05) o desempenho e rendimento de carcaça. Existem diferenças significativas entre as linhagens para consumo de ração e características de carcaça. Sendo que a linhagem Cobb 500 teve maior rendimento de peito e carne de peito (p ≤ 0,05), enquanto as linhagens Hubbard Flex e Ross 308 tiveram maior rendimento de coxa e sobrecoxa (p ≤ 0,05).Palavras-chave: aminoácido, carne de peito, desempenho, genótipos, rendimento de carcaça.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

<b>Digestible lysine for broilers from different commercial strains in the final phase

Dalólio

Moreira

Vaz

et al. 2016

Acta Sci. Anim. Sci.

View full text Add to dashboard Cite

show abstract

“…Com o objetivo de verificar esses níveis, Almeida et al (2002) não observaram diferença para ganho de peso, conversão alimentar e rendimento de carcaça quando utilizaram níveis de lisina acima do recomendado pelo NRC (1994) (100, 110 e 120% para as rações inicial, crescimento e terminação, respectivamente), porém observaram que os níveis mais altos de lisina resultaram em menores porcentagens de gordura abdominal quando comparados aos níveis mais baixos, nas fêmeas.…”

Section: Introductionunclassified

Níveis de lisina com dois balanços eletrolíticos para frangos de corte na fase de crescimento (22 a 40 dias)

Campestrini¹,

Barbosa²,

Nunes

et al. 2008

R. Bras. Zootec.

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RESUMO -Objetivou-se avaliar os níveis de lisina para frangos de corte na fase de crescimento (22 a 40 dias de idade) ABSTRACT -The lysine levels for chickens in the growing phase (22 to 40 days of age) by using two different electrolytes balance were evaluated. Sixty-four hundred Cobb broiler male of 21 days old were allotted to a completely randomized design as a factorial arrangement of treatments, five lysine levels (1.062, 20, 40, and 60% above and 20% below of recommended levels) and two electrolytes balance (190 and 255 mEq/kg), with four replicates and 16 broilers for experimental unit. There was no interaction among the variables studied, however the lysine levels affected final weight, weight gain and the feed:gain ratio and feed intake, however, the best adjustments were observed when the discontinue LRP model was used, where values above 1.089 and 1.14% of lysine did not increase weight gain and feed:gain ratio. Concerning the blood parameters, only uric acid was affected by lysine levels, but no difference was observed for carcass and prime cuts yield, the abdominal fat was influenced by the dietary electrolyte balance. Lysine levels above 1.089 and 1.14 for weight gain and feed:gain ratio, respectively, did not impair broiler performance. The lysine levels affected neither carcass yield and nor prime cuts yield.Key Words: amino acids, cut birds, electrolytes balance, lysine IntroduçãoO objetivo na produção de frangos de corte tem se modificado ao longo dos últimos anos, com o aumento do consumo interno e das exportações de partes desossadas em detrimento da carcaça inteira. Dessa forma, o rendimento de cortes como peito e pernas, aliado a carcaças com menor quantidade de gordura, passou a ser fundamental para a indústria.A algum tempo atrás, as dietas das aves eram formuladas com base em proteína bruta, o que poderia resultar em grandes perdas, tanto energéticas quanto econômicas, principalmente quando ocorriam desbalanceamento entre aminoácidos. Atualmente, recomenda-se formular dietas

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“…Likely, the lowest values of energy in the diet may have caused a lower deposition of muscular glycogen in relation to the control treatment as well as with the use of Rice Bran. On the other hand, Almeida et al (2002), studying the broiler diets, found no differences in the pH values of the breast at different slaughter ages. No influence of sex was found, supporting the findings by Lonergan et al (2003), Quentin et al (2003), Santos et al (2005) and Almeida et al (2002).…”

Section: Resultsmentioning

confidence: 92%

“…On the other hand, Almeida et al (2002), studying the broiler diets, found no differences in the pH values of the breast at different slaughter ages. No influence of sex was found, supporting the findings by Lonergan et al (2003), Quentin et al (2003), Santos et al (2005) and Almeida et al (2002). However, Faria et al (2009), reports differences between sex, with means of 5.89 for males and of 5.83 for females.…”

Section: Resultsmentioning

confidence: 92%

Quality of broiler meat of the free-range type submitted to diets containing alternative feedstuffs

Faria

Vieira

Souza

et al. 2012

Arq. Bras. Med. Vet. Zootec.

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The work had the intention of investigating the effect of the use of alternative feeds as part replacers in diet-formulating, evaluating the characteristic physicochemical alterations and centesimal composition of the free-range chicken. In the experiment a total of 192 (one hundred and ninety-two) birds of the Pescoço Pelado (Label Rouge) strain arranged in a completely randomized design (CRD) formed by 4 treatments (Treatment 1 (Control), Treatment 2 (10% of the inclusion of rice bran), Treatment 3 (10% of the inclusion of ground cassava leaf) and Treatment 4 (10% of the inclusion of ground leucaena hay) with 8 replicates per treatment were used. The results revealed greater values of b* (yellow), Saturation (C*) and pH for broiler meat with inclusion of ground cassava leaf and leucaena, while for the other variables of physicochemical composition, no influences of the treatments were not found. For centesimal composition the treatments showed greater values of moisture in relation to the control treatment. For sex, only a difference for the content of b* and C* was found, with higher values for female. The use of the alternative feedstuffs has not revealed marked influences on the chemical composition and quality parameters of free-ranging chicken's meat with the use of replacement up to 10% in the diets.

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Efeito do Nível de Lisina da Dieta e do Sexo Sobre o Desempenho e Rendimento de Carcaça de Frangos de Corte

Cited by 9 publications

References 4 publications

<b>Digestible lysine for broilers from different commercial strains in the final phase

<b>Digestible lysine for broilers from different commercial strains in the final phase

Níveis de lisina com dois balanços eletrolíticos para frangos de corte na fase de crescimento (22 a 40 dias)

Quality of broiler meat of the free-range type submitted to diets containing alternative feedstuffs

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