Lisina digestível para frangos de corte machos entre 12 e 22 dias de idade

Takeara, Paula; Toledo, Ana Louise de; Gandra, E.R.S.; Albuquerque, Ricardo de; Neto, Messias Alves da Trindade

doi:10.1590/s0102-09352010000600023

Cited by 7 publications

(3 citation statements)

References 11 publications

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“…No significant effects of dietary digestible lysine values on the chemical composition of breast meat were detected in broilers slaughtered at 84 days of age (Table 9). These results are in agreement with those of Takeara et al (2010) and Oliveira et al (2013), who did not find any influence of dietary digestible lysine levels on the chemical composition of broiler carcasses.…”

Section: Breast Meat Qualitysupporting

confidence: 93%

Digestible Lysine Requirements the Performance, Carcass Traits and Breast Meat Quality of Slow-Growing Broilers

Brasil

Lima

Machado

et al. 2018

Braz. J. Poult. Sci.

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Three experiments were conducted to estimate the digestible lysine requirements of slow-growing broilers on their performance, carcass traits, and breast meat quality. Different broilers were evaluated in each experiment. In Experiment 1, broilers were evaluated from 29-49 days of age (grower phase I), in Experiment 2, from 50 to 69 days old (grower phase II), and in Experiment 3, from 70-84 days old (finisher phase). A completely randomized design with five treatments of four replicates each was applied in all experiments. The following dietary digestible lysine values were investigated: 0.871, 1.011, 1.151, 1.291 and 1.431% in Experiment 1; 0.803, 0.943, 1.083, 1.223 and 1.363% in Experiment 2; and 0.766, 0.906, 1.046, 1.186 and 1.326% in Experiment 3. In all three experiments, digestible lysine values quadratically affected feed intake, weight gain, and feed conversion ratio. Lysine intake linearly increased with increasing digestive lysine values, whereas lysine utilization efficiency linearly decreased. Lysine requirements for maximum feed intake (1.298, 1.109, 1.150%), weight gain (1.183, 1.199, 1.162%), and feed conversion ratio (1.203, 1.162, 1.126%) were estimated in Experiments 1, 2 and 3. Digestible lysine requirement for carcass yield were estimated as 1.162, 1.068 and 1.107% in experiments 1, 2 and 3, respectively. Lysine influenced the physical-chemical parameters broiler breast meat. Digestible lysine levels of 1.203, 1.162 and 1.126% are recommended in the diets of Redbro Plume broilers during the phases 29-49, 50-69 and 70-84 days of age to optimize feed conversion ratio.

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Section: Breast Meat Qualitysupporting

confidence: 93%

Digestible Lysine Requirements the Performance, Carcass Traits and Breast Meat Quality of Slow-Growing Broilers

Brasil

Lima

Machado

et al. 2018

Braz. J. Poult. Sci.

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“…In an experiment conducted by Takeara et al (2010), evaluating the effect of levels of LD (1.05, 1.10, 1.15, 1.20, and 1.25) on the performance of broilers from 12 to 22 days, they observed that decreasing levels of LD linearly reduced performance. For broilers 22 to 42 days of age, Conhalato et al (1999) recommended 1.02 and 0.98 of LD, nominees for improvement in performance variables weight gain and feed conversion ratio, respectively.…”

Section: Resultsmentioning

confidence: 99%

Levels of metabolizable energy and digestible lysine for broiler chicks 8-21 days of age

et al. 2015

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The experiment was conducted with the objective of evaluating the effect of metabolizable energy (ME) levels and digestible lysine (DL) levels on the performance of 8-21 days old broiler chicks. Eight hundred and sixty four broiler chicks were used, with average weight of 160 ± 5g, randomly distributed in 48 boxes (experimental unit), experimental unit in a factorial 4x4 with four levels of ME (2,700, 2,825, 2,950, and 3,075 kcal kg -1 ) and four levels of DL (1,080; 1,187; 1,295 and 1,403%) resulting in 16 treatments with three replications. Increases in levels of ME and DL in the diets caused significant interaction (P <0.05) in weight gain and feed conversion. Increasing levels of ME and DL caused significant interaction (P <0.05) for the deposition rate of protein and fat in the carcass. The simultaneous increases of ME and DL in the diet promoted a linear increase (P <0.05) in villus height of the duodenum, jejunum, and villous:crypt ileum. It is recommended the use of 3,075 kcal kg -1 ME and 1,403% of LD for best performance, protein deposition rate, and intestinal morphometric characteristics of 8-21 days old broiler chicks. Key words: Performance, broiler, intestinal morphology ResumoO experimento foi conduzido com o objetivo de avaliar o efeito dos níveis de energia metabolizável (EM) e de lisina digestível (LD) no desempenho de pintos de corte de 8 a 21 dias de idade. Foram utilizados 864 pintos de corte, com peso médio de 160 ± 5g, distribuídos em um delineamento inteiramente casualizado ao acaso, em 48 boxes (unidade experimental), e esquema fatorial 4x4 sendo quatro níveis de EM (2.700; 2.825; 2.950; e 3.075 kcal kg -1 ) e quatro níveis de LD (1,080; 1,187; 1,295 e 1,403%) resultando em 16 tratamentos com três repetições. Os aumentos dos níveis de EM e de LD nas rações promoveram interação (P<0,05) no ganho de peso, conversão alimentar, taxa de deposição de proteína

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“…3). (Toledo et al, 2007;Cella et al, 2009;Takeara et al, 2010) Os resultados observados para composição de carcaça no presente estudo estão coerentes com a observação obtida para a conversão alimentar, em que o aumento do nível de lisina não alterou a eficiência de utilização da fração proteica da dieta e, portanto, a capacidade da ave em depositar proteína na carcaça. Fato que, provavelmente, pode ser justificado pela baixa capacidade das aves do tipo caipira em depositar proteína na carcaça em relação ao frango de corte tradicional (Fanatico et al, 2008;Madeira et al, 2010) e também pelo imbalanço aminoacídico observado nas dietas contendo maior concentração de lisina.…”

Section: Resultsunclassified

Lisina digestível em dietas de baixa proteína para frangos de corte tipo caipira de um aos 28 dias

Oliveira¹,

Carrijo

Kiefer

et al. 2013

Arq. Bras. Med. Vet. Zootec.

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RESUMOAvaliou-se a inclusão de diferentes porcentagens de lisina digestível em dietas de baixa proteína para frangos de corte tipo caipira, machos e fêmeas, com idade entre um e 28 dias. Utilizaram-se 792 machos e 792 fêmeas de linhagem comercial, de um dia de idade, distribuídos em delineamento inteiramente ao acaso, em esquema fatorial 2x6 (sexo x porcentagem de lisina digestível: 0,85; 0,90; 0,95; 1,00; 1,05 e 1,10%) com seis repetições de 22 aves. Não foi constatada interação (P>0,05) de sexo versus inclusão de lisina. Observou-se superioridade (P<0,05) dos machos em relação às fêmeas para todas as variáveis avaliadas. O ganho de peso dos frangos diminuiu linearmente (P<0,05) em função do aumento da porcentagem de lisina digestível na dieta e observou-se redução linear (P<0,01) nos consumos de ração e de proteína. O consumo de lisina digestível aumentou linearmente (P<0,01) em função do aumento de sua concentração na dieta. Não houve diferença (P>0,05) para conversão alimentar. Da composição centesimal da carcaça, apenas o percentual de matéria mineral foi influenciada (P<0,05) pela porcentagem de lisina digestível. Conclui-se que 0,85% de lisina para frangos tipo caipira de pescoço pelado atende à exigência nutricional de lisina digestível em dietas com baixa concentração proteica.Palavras-chave: aminoácidos, carcaça, desempenho, frango, sistema semi-intensivo lysine: 0.85, 0.90, 0.95, 1.00, 1.05 and 1.10%) ABSTRACT The inclusion of different percentages of digestible lysine in low-protein diets was evaluated for male and female free-range broiler chickens, from 1 to 28 days. We used 792 female and 792 male naked neck chickens a day in a completely randomized 2x6 factorial scheme (sex x percentages of digestible

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Lisina digestível para frangos de corte machos entre 12 e 22 dias de idade

Cited by 7 publications

References 11 publications

Digestible Lysine Requirements the Performance, Carcass Traits and Breast Meat Quality of Slow-Growing Broilers

Digestible Lysine Requirements the Performance, Carcass Traits and Breast Meat Quality of Slow-Growing Broilers

Levels of metabolizable energy and digestible lysine for broiler chicks 8-21 days of age

Lisina digestível em dietas de baixa proteína para frangos de corte tipo caipira de um aos 28 dias

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