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| Porto,Neliane Galvão; Ribeiro,Felipe Barbosa; Siqueira,Jefferson Costa de; Bomfim,Marcos Antonio Delmondes; Marchão,Rafael Silva; Costa,Dayana da Conceição da. |
| ABSTRACT Methionine is an essential amino acid, and generally, the first limiting one in the diets of tambaqui, the main native fish produced in continental aquaculture in South America. However, there is a lack of information on their amino acid requirement, especially for maintenance and efficiency of utilization. The present study aimed to determine the requirement of [methionine plus cystine] for the maintenance and efficiency of utilization using tambaqui of different body weights. Two experiments were carried out using 250 tambaqui with weights of 100 and 300 g. They were distributed in a completely randomized design with four treatment groups (0.264, 0.396, 0.528, and 0.660% of digestible [Met + Cys]), five replications. The control treatment (CT)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sulfur amino acids; Colossoma macropomum; Factorial method; Amazon fish. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542020000100302 |
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| Araújo,Marcos Jácome de; Medeiros,Ariosvaldo Nunes de; Teixeira,Izabelle Auxiliadora Molina de Almeida; Costa,Roberto Germano; Marques,Carlo Aldrovandi Torreão; Resende,Kléber Tomás de; Melo,Gabriel Maurício Peruca de. |
| ABSTRACT A comparative slaughter trial was conducted to estimate the body composition and net requirements of Cu, Zn, Mn, Fe, and Co for growth of castrated Moxotó goat kids, with15.69±0.78 kg initial body weight (BW), grazing in the semiarid region of Brazil. The baseline group consisted of four randomly selected kids (15.37±0.30 kg BW). Thirty-two kids were randomly allocated into eight groups (considered as block), distributed among four levels of concentrate supplementation (0, 0.5, 1.0, and 1.5% BW). Animals in a group were slaughtered when the 1.5% BW treatment kids in the group reached approximately 25 kg BW. The trace element content (mg/kg of empty body weight) ranged from 23.68 to 27.81 mg Zn, 35.70 to 47.29 mg Fe, 0.86 to 1.09 mg Mn, 1.45 to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caatinga; Factorial method; Micro mineral; Zinc. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000300231 |
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