Níveis de lisina digestível para frangos de corte tipo caipira de 28 a 56 dias de idade

Rosa, Evellize Pereira Morara; Kiefer, Charles; Souza, Karina Márcia Ribeiro de; Silva, Jardel Barbosa da; Ozelame, Aline Marhold; Gomes, Eva Nara Oliveira; Rosa, Rafael Arantes

doi:10.1590/s1519-99402014000400012

Cited by 4 publications

(9 citation statements)

References 14 publications

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“…The non-significant effect of level of lysine on feed intake in this period is similar with the Rosa et al (2014) result, who evaluated digestible lysine values for free-range male broilers between 28 to 56 days of age.…”

Section: Effects Of Different Lysine Values On Performancesupporting

confidence: 85%

“…Similarly, when evaluating increasing values of digestible lysine in feeds provided to free-range broilers, Rosa et al (2014) observed a quadratic effect for final weight, which increased up to the level of 0.909% digestible lysine in the feed ration.…”

Section: Effects Of Different Lysine Values On Performancementioning

confidence: 89%

“…Nascimento et al (2009) tested increasing values of digestible lysine for free-range broilers, in the period from 28 to 56 days and the best response to weight gain was found with the estimated level of 1.056%. In comparison, Rosa et al (2014) determined 0.908% of digestible lysine in rations for greater weight gain of free-range broilers in this same phase. The best feed conversion for the period from 35 to 70 (2.98) and 35 to 84 (3.28) days of age was found, respectively, for rations containing values of 0.952% and 0.985% digestible lysine, respectively (Figures 5 and 6).…”

Section: Effects Of Different Lysine Values On Performancementioning

confidence: 97%

“…When studying different values of digestible lysine in feed rations for slow growth chickens ISA Label, Nascimento et al (2009) identified higher weight gain, better feed conversion and lower abdominal fat deposition, while Rosa et al (2014) did not identify significant differences for feed conversion; however, they identified an increase in weight gain and greater weight of the carcass and breast.…”

Section: Introductionmentioning

confidence: 93%

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Digestible lysine for broiler chickens with lower genetic potential grown on free-range system

et al. 2016

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Determining the actual lysine requirement is crucial as it is an essential amino acid and plays animportant role in the metabolism of broilers. In addition, it is the second limiting amino acid for broilers fed with rations formulated basedon corn and soybean meal. The aim of this study was to determine the digestible lysine requirement for male broilers with lower genetic potential for growth in a semiconfined system as well as to evaluate the effects of different values of digestible lysine on performance and carcass characteristics. A total of 300 broiler chickensfrom a commercial lineage EMBRAPA 041 were used with an average initial weight of 987 g. The broilers were distributed into 20 experimental units in a completely randomized design with five treatments (0.586; 0.746; 0.906; 1.066, and 1.226% digestible lysine), four replicates and 15 broilers per experimental unit.In both periods, there were linear effect of digestible lysine values on the lysine intake and lysine utilization efficiency and quadratic effect on final body weight, weight gain and feed: gain ratio.There was a quadratic effect on the absolute weight of carcasses, breast, thigh + drumstick and income gizzard.For rearing of male broilers with lesser genetic growth potential reared in semi-confinement, rations with 1.040% and 1.103% digestible lysine can be recommended for maximum weight gain in periods from 35 to 70 and 35 to 84 days of age, respectively.Index terms: Amino acids; nutritional requirements; performance; yield. RESUMOA determinação da real exigência de lisina é fundamental, por ser um aminoácido essencial e desempenhar importantes funções no metabolismo dos frangos de corte. Além disto, apresenta-se como segundo aminoácido limitante para frangos de corte alimentados com rações formuladas a base de milho e farelo de soja. O objetivo deste estudo foi determinar a exigência de lisina digestível para frangos de corte machos de menor potencial genético para crescimento em sistema semiconfinado, bem como avaliar os efeitos de diferentes valores de lisina digestível sobre o desempenho e características de carcaça. Foram utilizados 300 frangos de corte, da linhagem comercial EMBRAPA 041, com pesoinicial médio de 987 g. Os frangos foram distribuídos em 20 unidades experimentais em um delineamento inteiramente casualizado, com cinco tratamentos (0,586; 0,746; 0,906; 1,066 e 1,226% de lisina digestível), quatro repetições e quinze frangos por unidade experimental. Nos dois períodos avaliados, verificaram-se efeito linear dos níveis de lisina digestível sobre a ingestão e eficiência na utilização de lisina, e efeito quadrático sobre peso vivo final, ganho de peso e a conversão alimentar. Verificou-se efeito quadrático sobre os pesos absolutos da carcaça, peito, coxa+sobrecoxa e rendimento da moela. Podem ser recomendadas, respectivamente, para máximo ganho de peso rações com 1,040% e 1,103% de lisina digestível nos períodos de 35 aos 70 e 35 aos 84 dias de idade.Termos para indexação: Aminoácidos; exigência nutricional; desempenho...

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Section: Effects Of Different Lysine Values On Performancesupporting

confidence: 85%

Section: Effects Of Different Lysine Values On Performancementioning

confidence: 89%

Section: Effects Of Different Lysine Values On Performancementioning

confidence: 97%

Section: Introductionmentioning

confidence: 93%

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Digestible lysine for broiler chickens with lower genetic potential grown on free-range system

et al. 2016

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“…Nascimento et al (2009) studied the digestible lysine requirements of Isa Label chickens reared in semi-intensive conditions and estimated a 1.056% digestible lysine to achieve optimal weight gain. However, Rosa et al (2014) estimated that 0.908% digestible lysine should be supplemented into the diet of male broiler chickens at 28-56 days old.…”

Section: Results and Discusionmentioning

confidence: 99%

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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Estimate of body growth curve and feed intake of free-range chickens receiving different levels of digestible lysine

Brito

Cunha-Filho

Silva

et al. 2021

Span. j. agric. res.

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Aim of the study: To adjust nonlinear Gompertz model to describe the body growth and feed intake (FI) of free-range chickens of the CPK (Color Plumé) strain, receiving different levels of digestible lysine (dig-Lys), from 21 to 77 days of age.Area of study: São Cristovão, Sergipe, Brazil.Material and methods: A total of 432 one-day-old unsexed chickens were used in the study. At 21 days of age, the birds were assigned to four treatments (0.85%; 0.97%; 1.09%; 1.21%) of dig-Lys, in a completely randomized design with four replicates, with 27 birds per experimental unit. The Gompertz model was used to estimate bird growth curves related to body weight (BW) and FI at each Lys level.Main results: The tests of comparison between the parameters of the Gompertz model for each Lys level showed that parameter A varied, while parameters B (0.0329) and C (45.819) did not differ significantly. In parameter A, the dig-Lys level of 0.97% provided the highest BW estimate at maturity and maximum BW at the inflection point.Research highlights: Use of non-linear models to predict nutritional requirements, helps farmers to optimize management decisions and, thus, maximize their profit. According to Gompertz model, it was possible to infer that the inclusion of 0.97% dig-Lys in the diet of mixed batches of free-range chickens of the CPK strain meets their nutritional requirements.

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Níveis de lisina digestível para frangos de corte tipo caipira de 28 a 56 dias de idade

Cited by 4 publications

References 14 publications

Digestible lysine for broiler chickens with lower genetic potential grown on free-range system

Digestible lysine for broiler chickens with lower genetic potential grown on free-range system

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

Estimate of body growth curve and feed intake of free-range chickens receiving different levels of digestible lysine

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