Evaluation of ultrasound imaging to predict loin eye area in tambaqui

Authors

  • Caio Augusto PERAZZA University of Mogi das Cruzes (UMC), Unit of Biotechnology
  • Fabio Luís Valério PINAFFI University of São Paulo (USP), Laboratory of Theriogenology Dr. O.J. Ginther, Department of Veterinary Medicine
  • Luciano Andrade SILVA University of São Paulo (USP), Laboratory of Theriogenology Dr. O.J. Ginther, Department of Veterinary Medicine
  • Alexandre Wagner Silva HILSDORF University of Mogi das Cruzes (UMC), Unit of Biotechnology http://orcid.org/0000-0001-9565-8072 (unauthenticated)

Abstract

Tambaqui is the major native Characiform fish species in Brazil. The loin-eye area (LEA) is a feature currently used in breeding programs for livestock and may be a phenotype susceptible to selection also in tambaquis. The purpose of this study was to evaluate the efficiency of two different LEA measurements. LEA data were taken using the vegetable paper (VP) and ultrasonography (US) techniques applied in three LEA regions: (LEA1) at the end of the operculum region, (LEA2) at the insertion of the dorsal fin, and (LEA3) in the region of insertion of the anal fin from 29 individuals in a fish processing plant located in the State of Rondônia, Brazil. The data were analyzed in the R program using both the Student’s t-test and the Pearson correlation. The mean values for the two methods were not statistically different at the 5% risk level, indicating that the US can efficiently estimate the LEA compared with the actual value given by VP. The correlation was moderate (0.61) for LEA2 and can be attributed to the loin cut into two halves lengthwise in tambaquis, usually done during commercial fish processing. Ultrasound has proven to be an efficient method for accurately estimating the LEA in tambaqui for further genetic breeding programs.

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Published

2018-11-22

Issue

Vol. 41 No. especial (2015): BOLETIM DO INSTITUTO DE PESCA

Section

Scientific Article

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