Níveis de lisina digestível para pintos de corte machos na fase de 1 a 21 dias de idade

Conhalato, Giane da Silva; Donzele, Juarez Lopes; Rostagno, Horácio Santiago; Albino, Luiz Fernando Teixeira; Oliveira, Rita Flávia Miranda de

doi:10.1590/s1516-35981999000100013

Cited by 14 publications

(5 citation statements)

References 11 publications

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“…For instance, Conhalato et al(1999) evaluated the effect of different levels of digestible lysine (0.84, 0.93, 1.02, 1.11 and 1.20%) for broiler chickens and the best weight gain was obtained with the predicted levels of approximately 1.02%, with 33% of methionine, 61% of threonine and 15% of tryptophan. These levels are similar to ideal levels established by Baker & Han (1994a), i.e., 36% of methionine, 67% of threonine and 16% of tryptophan.…”

Section: Resultsmentioning

confidence: 99%

Performance and carcass yield of broilers fed with different digestible amino acid profiles recommended by nutrients requirements tables

Pedroso

Franco

Flemming

et al. 2003

Rev. Bras. Cienc. Avic.

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An experiment was conducted to evaluate the effect of different digestible amino acid profiles on the performance of broilers in two phases: from 1 to 21 days and from 22 to 42 days of age. At the end of the experiment, carcass yield and cut percentages were evaluated. Nine hundred and sixty AgRoss birds were distributed in a randomized block design with four treatments (four digestible amino acid profiles): Rostagno et al. (2000), Baker & Han (1994b), Degussa (1997) and those recommended by AgRoss (2000), with six repetitions and 40 birds per repetition (20 males and 20 females). The results showed that the four diets were able to provide the requirements of the birds, since no significant differences were seen among the treatments on the performance in the two phases and on the carcass yield and cuts at 42 days of age. Males had better yields of feet, head and neck, and lower percentage of abdominal fat (p<0.05). The best cost/benefit ratio was seen for the profile established by Rostagno et al. (2000) when diets were evaluated in an ideal protein situation.

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Section: Resultsmentioning

confidence: 99%

Performance and carcass yield of broilers fed with different digestible amino acid profiles recommended by nutrients requirements tables

Pedroso

Franco

Flemming

et al. 2003

Rev. Bras. Cienc. Avic.

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“…Ao avaliarem os efeitos dos níveis de lisina da ração sobre o GP de frangos Hubbard no período de 1 a 21 dias de idade, Conhalato et al (1999) estimaram o nível de 1,05% de lisina digestível como sendo adequado para maximizar o GP das aves, correspondente a um consumo de lisina digestível de 16,65g para cada kg de GP. No presente estudo, o consumo de lisina digestível para cada kg de GP foi estimado em 17,93g para machos e 19,92g para as fêmeas, sugerindo que as aves de crescimento lento apresentam menor eficiência de utilização da lisina para GP quando comparadas às aves de corte de crescimento acelerado.…”

Section: Methodsunclassified

“…Conhalato et al (1999) (Boorman, 1979;Gonzales, 2002). O CL das aves de ambos os sexos aumentou linearmente com os níveis de lisina da ração.…”

Section: Methodsunclassified

Exigências de lisina digestível para aves de corte da linhagem ISA Label criadas em semiconfinamento

Nascimento

Sakomura

Siqueira

et al. 2009

Arq. Bras. Med. Vet. Zootec.

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RESUMOForam realizados três experimentos para determinar as exigências de lisina digestível para aves da linhagem ISA Label, de ambos os sexos, criadas em semiconfinamento durante as fases: inicial (1 a 28 dias), de crescimento (28 a 56 dias) e final (56 a 84 dias). Em cada experimento, foram utilizadas 480 aves, alojadas em 24 piquetes, cada um contendo abrigo coberto de 3,13m 2 e área de pastejo de 72,87m 2 . O delineamento experimental utilizado foi o inteiramente ao acaso, em esquema fatorial 4x2 (níveis de lisina e sexo) com três repetições de 20 aves cada. Os níveis de lisina digestível avaliados foram: 0,850; 0,970; 1,090 e 1,210% na fase inicial; 0,750; 0,870; 0,990 e 1,110% na fase de crescimento e 0,640; 0,760; 0,880 e 1,000% na fase final. Foram mensuradas as variáveis de desempenho, característica de carcaça, deposição de proteína e gordura corporal, peso e teor de proteína das penas. Com base nos resultados de desempenho, recomendam-se 1, 041; 1,006 e 0,760% de lisina digestível em rações para aves ISA Label nas fases inicial, de crescimento e final, respectivamente. 0.85, 0.97, 1.09, and 1.21% for starter; 0.75, 0.87, 0.99, and 1.11% for growing; and 0.64, 0.76, 0.88

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“…Positive effect of the dietary lysine levels on the growth rate of broilers was also observed by Conhalato et al (1999), Costa et al (2001Costa et al ( , 2006 Abudabos & Aljumaah (2010). Despite the consistency of the growth response to lysine, the level that provides the best results varies according to the studies, and this may be attributed to factors such as the ingredients utilized in the formulation of the diets; genetic potential of the birds for meat deposition in the carcass, among others (Leclercq & Beaumont, 2001;Sterling et al, 2005;Indarsih, 2009).…”

Section: Resultsmentioning

confidence: 92%

“…In experiments with chickens in the phases of 1 to 21, 10 to 20 and 10 to 21 days of age, respectively, Conhalato et al (1999), Edwards et al (1999) and Eits et al (2002) observed increased deposition of protein in the carcass as the lysine levels of the diet were elevated. However, these results differ from those found by Cella et al (2009) andTavernari et al (2009), who did not observe variation in protein deposition in male broilers in the period of 1 to 21 days of age fed diets supplemented with 11.4, 11.8, 12.2 and 12.6 g/kg and 10.73 and 11.60 and 12.47 g/kg lysine, respectively.…”

Section: Resultsmentioning

confidence: 97%

Lysine levels in diets for broilers from 8 to 21 days of age

Oliveira¹,

Oliveira²,

Donzele³

et al. 2013

R. Bras. Zootec.

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This study was conducted to evaluate the effects of digestible lysine levels in diets with and without supplementation of industrial amino acids on performance and fat deposition in the carcass of broilers in the starter phase. One thousand four hundred and forty chickens with initial weight of 168.1±5.0 g were distributed in a completely randomized experimental design, in a 5 × 2 factorial arrangement, composed of five digestible lysine levels (10.0, 11.0, 12.0, 13.0 and 14.0 g/kg) and two types of diet (diet with different proportions of corn and soybean meal and diet supplemented with industrial amino acids to obtain the digestible lysine levels), with eight replications and 18 birds per replication. There was interaction effect only on weight gain and fat deposition in the birds. The lysine levels reduced feed intake linearly in both diets, but caused a linear increase in lysine intake. The lysine levels quadratically affected weight gain and feed conversion, which improved up to the estimated levels of 13.0 and 12.8 g/kg lysine, respectively, when the corn:soybean meal ratio of the diet changed. In the diets supplemented with amino acids, the lysine levels increased weight gain and improved feed conversion linearly. Regardless of the type of diet, protein deposition increased linearly, whereas fat deposition reduced also linearly, as the lysine levels in the diets were increased. The levels of 13.0 and 14.0 g/kg digestible lysine provide, respectively, the best performance in birds fed a diet in which the proportion of corn and soybean meal varies and a diet supplemented with industrial amino acids, in the period from 8 to 21 days of age.

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Níveis de lisina digestível para pintos de corte machos na fase de 1 a 21 dias de idade

Cited by 14 publications

References 11 publications

Performance and carcass yield of broilers fed with different digestible amino acid profiles recommended by nutrients requirements tables

Performance and carcass yield of broilers fed with different digestible amino acid profiles recommended by nutrients requirements tables

Exigências de lisina digestível para aves de corte da linhagem ISA Label criadas em semiconfinamento

Lysine levels in diets for broilers from 8 to 21 days of age

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