2009
DOI: 10.1590/s1516-635x2009000300003
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Abstract: Amino acid requirements can be studied maintaining or not the ratio of the amino acids to lysine and changing or not dietary crude protein level. A third alternative was studied in this study conducted to evaluate broiler performance and weight gain of carcass parts, in response to increasing dietary digestible lysine (dig Lys) levels (0.70, 0.80, 0.90, 1.00, 1.055, 1.11, 1.165, and 1.22%). Two basal diets were formulated to contain 19.0% (diet A) and 20.5% (diet B) crude protein, and Met, Arg and Thr levels w… Show more

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Cited by 7 publications
(9 citation statements)
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“…This is similar to previous studies reported by some workers (Sterling et al, 2006;Aftab et al, 2007;Viola et al, 2009). However, this study also obtained at the highest feed intake did not increase the abdominal fat.…”
Section: Performancesupporting
confidence: 93%
See 1 more Smart Citation
“…This is similar to previous studies reported by some workers (Sterling et al, 2006;Aftab et al, 2007;Viola et al, 2009). However, this study also obtained at the highest feed intake did not increase the abdominal fat.…”
Section: Performancesupporting
confidence: 93%
“…Lysine is one of the limiting amino acids in modern broiler diets and its inclusion in the diet of the several studies is intended to achieve optimal performance (Hosseini et al, 2009;Viola et al, 2009;Nasr and Kheiri, 2011) particularly for breast muscle growth (Moran and Bilgili, 1990;Labadan et al, 2001;Queentin et al, 2005). However, under the practical condition, efforts to maximize performance are impeded by insufficient supply of amino acids when the nutritional need for each genotype is not completely identified.…”
Section: Introductionmentioning
confidence: 99%
“…A similar result was obtained by Assis et al (2008), who did not find variation in the FI of broilers kept in a thermoneutral environment from 22 to 42 days of age according to the lysine levels (9.0, 10.0, 11.0 and 12.0 g/kg) obtained by supplementation with industrial amino acids. Similarly, Viola et al (2009a) did not observe differences in the FI of broilers evaluating increasing lysine levels (7.0 to 12.2 g/kg) in a diet supplemented with industrial amino acids from 19 to 40 days of age.…”
Section: Resultsmentioning
confidence: 71%
“…Positive effect of increase in the dietary lysine levels, with or without supplementation of industrial amino acids, on the FC of growing broilers has been reported by several researchers (Leclercq et al, 1998;Rezaei et al, 2004;Lana et al, 2005;Costa et al, 2006;Assis et al, 2008;Balbino et al, 2008;Viola et al, 2009a;Ghahri et al, 2010).…”
Section: Resultsmentioning
confidence: 82%
“…It is used as the reference amino acid in poultry and swine nutrition because it is mainly utilized for protein synthesis and accounts for 7.5% of carcass protein (Viola et al, 2009). The present work was conducted in order to characterize the lysine requirements for male broilers from 22 to 42 days old kept under average temperature of 25.6°C.…”
Section: Introductionmentioning
confidence: 99%