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Individual responses of growing pigs to threonine intake R. Bras. Zootec.
Isola,Renan Di Giovanni; Hauschild,Luciano; Perondi,Dani; Andretta,Ines; Gobi,Jaqueline de Paula; Remus,Aline; Veira,Alini Mari.
ABSTRACT A nitrogen balance test was performed to evaluate the individual responses of growing pigs to threonine intake. Eight commercial barrows were used (body weight ranging from 15 to 20 kg). A dose-response study was performed, in which the threonine supply increased in seven equidistant steps (the seven dietary threonine levels ranged from 50 to 120% of the requirements) every three days for each pig. The levels of all other amino acids were 20% higher than the tested amino acid. Nitrogen retention as a function of threonine intake was calculated per individual and per group (NLIN and NLMixed, respectively) using a linear plateau model. The highest break point value was 42.42 g of threonine intake (the most demanding individual), whereas the lowest...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amino acids; Individuals; Nitrogen retention; Requirements; Variability.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100500
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Multiphase feeding program for broilers can replace traditional system Scientia Agricola
Hauschild,Luciano; Bueno,Camila Ferreira Delfim; Remus,Aline; Gobi,Jaqueline de Paula; Isola,Renan Di Giovanni; Sakomura,Nilva Kazue.
Broilers are traditionally managed with feeding programs that often consist of three or four phases. In this study we investigated whether a multiphase feeding program (14 phases) of broilers based on the optimal mix of two feeds could replace a traditional four phase system while maintaining broiler performance. To evaluate this prposed program we measured variables of performance, carcass yield, and nitrogen excretion. In addition, we determined if the multiphase feeding program (14 phases) would be equally effective regardless of bird gender. A total of 480 day-old Cobb chicks were used, with an average weight of 44.74 ± 0.16 g (females) and 44.71 ± 0.11 g (males). The birds were distributed in a completely randomized 2 × 2 factorial design. Each...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Avinesp 1.0; Precision nutrition; Body composition; Levels of lysine.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000300210
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