Balanço eletrolítico e níveis de proteína bruta sobre o desempenho, o rendimento de carcaça e a umidade da cama de frangos de corte de 1 a 42 dias de idade

Vieites, Flávio Medeiros; Moraes, George Henrique Kling de; Albino, Luiz Fernando Teixeira; Rostagno, Horácio Santiago; Atencio, A.; Junior, José Geraldo de Vargas

doi:10.1590/s1516-35982005000600024

Cited by 16 publications

(18 citation statements)

References 9 publications

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“…The effects of the electrolyte balance levels on feed conversion observed in the present study are consistent with those obtained by Vieites et al (2005), who did not observe significant effects on the feed conversion of broilers (1 to 42 days)at electrolyte balance levels between 50 and 350 mEq kg -1 in a diet with 20% crude protein.…”

Section: Resultssupporting

confidence: 92%

“…The different levels of electrolyte balance for the diets with 210 and 240 g kg -1 of crude protein (Table 2) were obtained by using a mixture of potassium carbonate (K 2 CO 3 ataconcentration of 56.52%) and/or ammonium chloride (NH 4 Clat a concentration of 63.3%), substituting the inert material. The crude protein levels were chosen based on NRC (1994) recommendations; however, they were elevated by 1 and 4%, given that crude protein contributes to the acidification of the diet (VIEITES et al, 2004). Because loss of electrolytes occur via renal excretion, it is important to determine the interaction between crude protein and electrolyte balance.…”

Section: Methodsmentioning

confidence: 99%

“…Mongin (1968) was one of the first to discuss the importance of the cation-anion balance of birds' diet in the formation of the eggshell. The balance of these minerals (potassium, phosphorus, sodium, and chlorine) acts directly on the acidbase balance of birds and is involved in several physiological processes such as the maintenance of osmotic pressure within medium values, which may affect performance, calcium metabolism, and use of phosphorus (VIEITES et al, 2004;AHMAD;SARWAR, 2006).…”

Section: Introductionmentioning

confidence: 99%

“…In practice, the most widely used salts are potassium chloride, sodium bicarbonate, and ammonium chloride (VIEITES et al, 2005). For layer birds, the recommended electrolyte balance levels for best productive performance and external eggshell quality are within the range from 174 to 205 mEq kg -1 (MURAKAMI et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

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Electrolyte balance and crude protein requirement of laying Japanese quail

et al. 2015

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The objective of this study was to evaluate the effects of two levels of crude protein and five levels of electrolyte balance on the performance and egg-quality of laying Japanese quail. Six hundred 45-dayoldquails were distributed in a randomized-block design with a 5 × 2 factorial arrangement comprising ten treatments, five replicates, and 12 birds per experimental unit. The electrolyte balance levels were 50, 125, 200, 275, and 350 mEq kg -1 of diet, and crude protein (CP) levels were 210 and 240 g kg -1 . The performance and egg-quality variables assessed were: feed intake, feed conversion, egg-laying percentage, egg weight and mass, and albumin, yolk and shell weight. There were no interactions among the studied factors. The electrolyte balance and crude protein levels did not significantly affect the performance variables. However, increased shell weight of eggs stored for seven days was observed at an electrolyte balance level of 200 mEq kg -1 . With regard to the CP levels, increased egg weight was observed at 28 days at a level of 210 g kg -1 , whereas increased albumin weight was observed at 35 days of storage at a level of 240 g kg -1 . A tendency toward an increase in egg albumin weight during the storage period of 14 days was observed. Based on the findings of this study, it is recommended that the diet for Japanese quails in the laying phase be formulated with an electrolyte balance of 50 mEq kg -1 and 240 g kg -1 of crude protein This diet did not have a negative effect on productive performance, and by increasing the weight of egg albumin, eggs can be stored for a longer duration, thus demonstrating an alternative method to increase the shelf life of eggs. Key words: Chlorine, egg quality, performance, potassium, sodium ResumoCom o objetivo de avaliar os efeitos de cinco níveis de balanço eletrolítico e dois níveis de proteína bruta sobre o desempenho e a qualidade de ovos de codornas japonesas na fase de produção, 600 codornas com 45 dias de idade foram distribuídas em delineamento em bloco casualizado, esquema fatorial (5x2), dez tratamentos, cinco repetições e 12 aves por unidade experimental. e 240 g kg -1 . As variáveis de desempenho e qualidade dos ovos analisadas foram: consumos de ração, conversão alimentar, porcentagem de postura, peso e massa de ovos, peso de albúmen, gema e casca. Os dados de peso do ovo e peso da casca foram registrados em diferentes tempos de armazenamento dos ovos e analisados dentro de cada tempo. Observou-se que não houve efeito da interação entre os fatores estudados. Os níveis do balanço eletrolítico e proteína bruta não influenciaram significativamente as variáveis de desempenho. Entretanto o nível de 200 mEq kg -1 melhorou o peso da casca de ovos armazenados por sete dias. Com relação aos níveis de PB, o nível de 210 g kg -1 promoveu aumento do peso da gema aos 28 dias enquanto que o nível de 240 g kg -1 aumentou o peso do albúmen aos 35 dias de armazenamento. Foi observada tendência de acréscimo no peso de albúmen dos ovos até o período de armazenamen...

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Section: Resultssupporting

confidence: 92%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Electrolyte balance and crude protein requirement of laying Japanese quail

et al. 2015

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“…The dietary electrolyte balance varies with the protein diet, where the growth of animals fed low protein diets decreases when the dietary electrolyte balance is amended by adding Na and K (Murakami et al, 2003). Many studies have been directed to the development of simplified electrolyte balance expressions, in order to identify the critical ratios of electrolytes for use in feed formulations (Vieites et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Electrolyte balance in diets with reduced protein for semi-weighted laying hens in the second production cycle

et al. 2012

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-The objective was to evaluate the effect of electrolyte balance in diets with reduced protein for semiweighted Bovans Goldline laying hens in the second production cycle. The design was completely randomized with five treatments and seven replicates of six birds per experimental unit. Treatment 1 consisted of a control diet containing 165.0 g/kg crude protein (CP), formulated with the addition of DL-methionine to meet birds requirements during the experimental period. To compose the treatments 2-5 (BE149, BE167, BE185 and BE203), a basal diet with reduced protein (135.0 g/kg CP) supplemented with synthetic amino acids DL-methionine, L-lysine, L-threonine, L-valine and L-tryptophan was formulated. This basal diet was supplemented with potassium carbonate, to replace the inert, so as to provide four levels of potassium (5.86, 6.56, 7.26 and 7.96 g/kg) corresponding to the electrolyte balance of 171, 149, 167, 185 and 203 meq/kg, respectively. There was increased linear effect for feed intake and decreasing linear effect for albumen weight and yolk percentage and quadratic effect for conversion per dozen and per egg mass. Crude protein is recommended at 135.0g/kg with 6.77 g/kg potassium and electrolyte balance of 172.51meq/kg in the diet of semi-weighted laying hens in the second production cycle.

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