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Effect of different periods of pre-slaughter stress on the quality of the Nile tilapia meat 116
CASTRO,Pedro Luiz de; LEWANDOWSKI,Vanessa; SOUZA,Maria Luiza Rodrigues de; CORADINI,Melina Franco; ALEXANDRE,Alciony Andréia da Cunha; SARY,César; RIBEIRO,Ricardo Pereira.
Abstract The study was carried out with the objective of evaluating the influence of pre-slaughter stress on meat quality of Nile tilapia (O. niloticus) for 10 days of storage in ice. 75 whole fish were used eviscerated, with average weight and length of 825.75 ± 101.59 g and 28.25 ± 0.81 cm, respectively. The treatments consisted of time in which the animals underwent pre-slaughter hypoxia, being 0, 3 and 6 minutes. Rigor mortis and muscle pH were assessed besides the application of the Quality Index Method and analysis of total protein and blood glucose. Rigor mortis did not differ among treatments during the storage period, and after three hours all animals were in rigor stage. The muscle pH values varied widely during the study period, observing higher...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hypoxia; PH; Rigor mortis; Quality index method; Blood parameters.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100052
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GENETIC VARIABILITY AND REPRODUCTIVE CHARACTERISTICS OF ZEBRAFISH (Cyprinidae Danio rerio) STOCKS 37
LEWANDOWSKI,Vanessa; SARY,Cesar; ETTA,Jaisa CAS; SOUZA,Felipe Pinheiro de; CASTRO,Pedro Luiz de; GOES,Elenice Souza dos Reis; OLIVEIRA,Carlos Antonio Lopes de; RIBEIRO,Ricardo Pereira; VARGAS,Lauro.
ABSTRACT Specimens of cultured zebrafish acquired from different fish farms in Brazil may show genetic variability and alteration in allele frequency due to genetic drift and selective pressure in a captive environment, resulting in the differentiation of productive and reproductive characteristics. The aim of this study was to evaluate the genetic variability and reproductive characteristics of 180 zebrafish specimens from six Brazilian fish farms. A deviation from the Hardy-Weinberg equilibrium was observed in all evaluated stocks. Differentiation among stocks was observed in the amount of genetic variability with respect to observed heterozygosity and the inbreeding coefficient (FIS). Genetic distance between stocks was determined through the Fst index,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Animal model; Consanguinity; DNA; Female; Fish larvae.
Ano: 2022 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2022000200223
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