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Title: Genetic parameter estimations of new traits of morphological quality on gilthead seabream (Sparus aurata) by using IMAFISH_ML software
Authors: León Bernabeu, Sergio 
Shin, Hyun Suk 
Lorenzo Felipe, Álvaro 
Pérez García, Cathaysa 
Berbel, Concepción
Said Elalfy, Islam 
Armero, Eva
Pérez-Sánchez, Jaume
Arizcun, Marta
Zamorano, Maria Jesús 
Manchado, Manuel
Afonso López, Juan Manuel 
UNESCO Clasification: 310502 Piscicultura
Keywords: Genetic Correlation
Gilthead Seabream
KET, et al
Issue Date: 2021
Project: Mejora de la Competitividad Del Sector de la Dorada A Través de la Selección Genética (Progensa-Iii) 
Journal: Aquaculture Reports 
Abstract: In this study, a total of 18 novel productive traits, three related to carcass [cNiT] and fifteen related to morphometric [mNiT]), were measured in gilthead seabream (Sparus aurata) using Non-invasive Technologies (NiT) as implemented in IMAFISH_ML (MatLab script). Their potential to be used in industrial breeding programs were evaluated in 2348 offspring reared under different production systems (estuarine ponds, oceanic cage, inland tank) at harvest. All animals were photographed, and digitally measured and main genetic parameters were estimated. Heritability for growth traits was medium (0.25–0.37) whereas for NiT traits medium-high (0.24–0.61). In general, genetic correlations between mNiT, cNiT and growth and traits were high and positive. Image analysis artifacts such as fin unfold or shades, that may interfere in the precision of some digital measurements, were discarded as a major bias factor since heritability of NiT traits after correcting them were no significantly different from original ones. Indirect selection of growth traits through NiT traits produced a better predicted response than directly measuring Body Weight (13–23%), demonstrating that this methodological approach is highly cost-effective in terms of accuracy and data processing time.
ISSN: 2352-5134
DOI: 10.1016/j.aqrep.2021.100883
Source: Aquaculture Reports [EISSN 2352-5134], v. 21, 100883, (Noviembre 2021)
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