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| Lopes,Edna; Sousa,Raimundo Vicente de; Zangeronimo,Márcio Gilberto; Pereira,Andressa Naira de Jesus; Coelho,Mariana de Resende; Ferreira,Matheus Soares da Silva; Lima,Renato Ribeiro; Marcondes,Fernanda Klein; Napimoga,Marcelo Henrique; Pereira,Luciano José. |
| This study aimed at evaluating the effect of ractopamine (RAC) on metabolism, zootechnical performance, body composition, and behavior in Wistar rats submitted to acute and chronic restrain stress. The oral dose of 5 mg/kg of RAC was administered in periods of 0, 7, 14, 21, and 28 days. The elevated plus-maze test (EPMT) was used for behavioral assessment. Blood, carcass and viscera characteristics were evaluated. Insulin-dependent glucose transporters (GLUT-4) were semi-quantified by Western Blot in epididymal adipocytes. RAC periods associated with chronic stress increased the GLUT-4 protein expression in adipose tissue in a time-dependent manner (P=0.01), i.e., the longer the RAC addition period, the higher the GLUT-4 concentration in chronically... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Β-adrenergic agonist; Ractopamine; Zootechnical performance; Metabolism; Elevated Plus-Maze Tests. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000300406 |
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| Bomfim,Marcos Antonio Delmondes; Marchão,Rafael Silva; Ribeiro,Felipe Barbosa; Siqueira,Jefferson Costa de; Silva,Louis Ramos; Takishita,Sylvia Sanae. |
| ABSTRACT The objective of this study was to determine the digestible tryptophan requirement of tambaqui (Colossoma macropomum) fingerlings and its relationship with digestible lysine. A total of 300 tambaqui fingerlings with three initial weights (2.12 ± 1.19, 8.13 ± 0.75, and 15.18 ± 1.91 g) were distributed in a randomized complete block design, consisting of six treatments (0.225, 0.256, 0.288, 0.319, 0.350, and 0.381% of digestible tryptophan) and five replicates of 10 fish per plot. The tryptophan to lysine ratio was estimated using a 1.78% level of digestible lysine. Variables regarding performance, food efficiency, and body deposition of protein, fat, and ashes, and nitrogen retention efficiency were evaluated. Feed intake and nitrogen retention... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Essential amino acids; Corporal composition; Zootechnical performance; Amazon fish. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000200405 |
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| Rodrigues,Rômulo Batista; Lui,Tatiane Andressa; Neu,Dacley Hertes; Boscolo,Wilson Rogério; Bittencourt,Fábio. |
| ABSTRACT This study verified the effect of valine on the zootechnical performance, percentage composition and growth of skeletal muscle fibre in fingerlings of Nile tilapia. A total of 270 fish (average initial weight 1.57 ± 0.05 g and total initial length 4.16 ± 0.46 cm) were used, distributed in 18 tanks (250 litres), in a completely randomised design with six treatments and three replications. Six diets (26.81% DP and 3200.00 kcal DE) were formulated with increasing levels of valine (0.82, 0.86, 0.98, 1.04, 1.10 and 1.26% of the diet). The zootechnical performance, percentage composition of the fish, and muscle-fibre distribution were evaluated. There was no effect from the different levels of valine (P>0.05) on zootechnical performance, percentage... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Essential amino acid; Aquaculture; Zootechnical performance; Oreochromis niloticus. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000300467 |
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