Studies on carcass quality traits in two populations of Coho salmon (Oncorhynchus kisutch): phenotypic and genetic parameters

Neira, Roberto; Lhorente, Jean Paul; Araneda, Cristián; Díaz, Nelson F.; Bustos, Eduardo; Alert, Alejandro

doi:10.1016/j.aquaculture.2004.08.009

Cited by 76 publications

(55 citation statements)

References 17 publications

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“…Significant heritability of MuscleLipid% is in accordance with observations in other species, e.g. 0.25-0.72 in O. mykiss (Quillet et al 2005;Tobin et al 2006);0.17-0.26 in O. kisutch (Neira et al 2004); 0.58 in C. carpio (Kocour et al 2007). Phenotypic and genetic correlations between TorryLipid or MuscleDry% and other carcass quality traits were low and the estimates of genetic correlations did not differ significantly from zero except for a significant negative correlation between TorryLipid and FilletWaste% and a significant positive correlation between TorryLipid and K; the latter two genetic correlations were intermediate in magnitude (−0.54 ± 0.21 and 0.59 ± 0.24 respectively).…”

Section: Discussionsupporting

confidence: 69%

“…The estimate of heritability for Viscera% and VisceFat% were 0.48 ± 0.15 and 0.68 ± 0.19 respectively and were in the upper range of heritability values reported for these two traits in other fishes, e.g. Viscera%: 0.20-0.38 in Cyprinus carpio (Kocour et al 2007); 0.33-0.45 in Oncorhynchus mykiss (Gjerde and Schaeffer 1989;Kause et al 2002); 0.33 in Oncorhynchus kisutch (Neira et al 2004), VisceFat%: 0.03-0.47 in various salmonids (Gjedrem 2000;Kause et al 2002;Neira et al 2004); 0.42 in Ictalurus punctatus (Bosworth et al 2007). The relatively high estimated heritability values suggest that rapid reduction of the proportion of viscera (i.e.…”

Section: Discussionmentioning

confidence: 88%

“…Growth rate is usually of primary interest in those programs, as development of fast growing strains via selective breeding would allow lowering production costs significantly by reducing the duration of the rearing cycle. Carcass processing traits and body composition traits also are essential ingredients of economic profitableness as they influence the yield of final product, its quality, and its acceptance by the consumer (Neira et al 2004;Kause et al 2002). For example, fillet yield and gutted yield are primary components of economic gain when fish are marketed as pan 106 E. Saillant et al: Aquat.…”

Section: Introductionmentioning

confidence: 99%

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Genetic variation for carcass quality traits in cultured sea bass (Dicentrarchus labrax)

Saillant

Dupont‐Nivet

Sabourault

et al. 2009

Aquat. Living Resour.

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-Genetic parameters for carcass quality traits were estimated in 27 families of sea bass (3 dams × 9 sires factorial mating design), raised mixed in the same tanks starting before hatching. Offspring parentage was determined a posteriori using 6 microsatellite loci. Carcass quality traits were recorded at 818 days post fertilization (mean standard length: 32.6 ± 3.1 cm). Genetic parameters were estimated from the sire half sib variance and covariance components. Heritability of body weight (BW) and carcass processing traits (standardized to body weight) percent head weight (Head%), percent viscera weight (Viscera%) and percent visceral fat weight (VisceFat%) were relatively high ranging from 0.48 ± 0.15 (Viscera%) to 0.87 ± 0.23 (Head%); the estimate of heritability for fillet yield (Fillet%) was lower (0.25 ± 0.10) but was significantly greater than zero. Body weight was positively correlated to Fillet%, Viscera%, and VisceFat%, and negatively correlated to Head%. These results indicate that these carcass processing traits can be modified by directional selection and that selection for greater BW would lead to an increase of Fillet%, Viscera% and VisceFat% and a decrease of Head%. Muscle lipid content (MuscleLipid%) was determined using two indirect methods: measurements with a Torry Fish Fatmeter (TorryLipid) and determination of the percentage of dry matter content (MuscleDry%) via desiccation. Both measures were highly correlated to chemical measurements of MuscleLipid%. Regression analysis indicated a superior predictive value of TorryLipid suggesting that MuscleLipid% may be evaluated via rapid, non lethal measurements with a Torry Fish Fatmeter. Heritability estimates of TorryLipid and MuscleDry% differed significantly from zero (TorryLipid: 0.28± 0.12, MuscleDry%: 0.36± 0.14) indicating that MuscleLipid% could be lowered by directional selection. TorryLipid and MuscleDry% were weakly correlated to body weight and carcass processing traits suggesting that simultaneous improvement of MuscleLipid% and other carcass quality traits may require definition of multi-trait selection indices.

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Section: Discussionsupporting

confidence: 69%

Section: Discussionmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

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Genetic variation for carcass quality traits in cultured sea bass (Dicentrarchus labrax)

Saillant

Dupont‐Nivet

Sabourault

et al. 2009

Aquat. Living Resour.

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“…QTL for weight, length and/or growth rate at the same age also mapped to the same intervals on several linkage groups (OKI03, OKI19, OKI23, OKI24 and the unnamed linkage group), suggesting loci may have pleiotropic effects across traits expressed at a specific age. All growth-related traits in this study were phenotypically correlated with each other and previous work on coho has shown high genetic correlations between weight and length at age (r ranges from 0.74 to 0.98; Myers et al, 2001b;Neira et al, 2004) and between weights at different ages (r ranges from 0.42 to 0.98; Hershberger et al, 1990;Myers et al, 2001b). QTL analyses are a first step in describing the genetic architecture underlying many of these genetic correlations.…”

Section: Discussionmentioning

confidence: 52%

Quantitative trait locus analysis of hatch timing, weight, length and growth rate in coho salmon, Oncorhynchus kisutch

McClelland

Naish

2010

Heredity

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In quantitative genetics, multivariate statistical approaches are increasingly used to describe genetic correlations in natural populations, yet the exact genetic relationship between phenotype and genotype is often unknown. Quantitative trait locus (QTL) analyses can be used to describe the molecular basis of this relationship. In salmonids, growth and development are important fitness traits that are phenotypically correlated with each other and with other life-history traits, and an understanding of the molecular basis of these relationships is valuable for future evolutionary studies. Here, a QTL analysis using an outbred cross was initiated to determine the molecular basis of phenotypic correlations between such growth traits in coho salmon (Oncorhynchus kisutch), an important fish species distributed throughout the North Pacific Ocean. Fifty-three QTL for growth rate, length and weight at eight time periods were located on seven linkage groups (OKI03, OKI06, OKI18, OKI19, OKI23, OKI24 and an unnamed linkage group) or associated with five unlinked markers (Omm1159, Omm1367/ i, Omy325UoG, OmyRGT55TUF and OtsG422UCD). One QTL for hatch timing was associated with the marker, Omm1241. All QTL were of minor effect, explaining no more than 20% of the observed variation in phenotypic value. Several instances of colocalization of QTL weight, length and growth rate were observed, suggesting a genetic basis for phenotypic correlations observed between these traits. This study lays the foundation for future QTL mapping efforts, for detailed examinations of the genetic basis of phenotypic correlations between growth traits, and for exploring the adaptive significance of growth traits in natural populations.

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“…A principal função dos lipídeos nos peixes é o armazenamento e o fornecimento de energia metabólica em forma de ATP, provindo da β-oxidação (Sargent et al, 1989;Froyland et al, 1998;Tocher, 2003 Este resultado está relacionado com a utilização de sua reserva energética que culminou em um decréscimo da sua massa corpórea (Kause et al, 2003;Neira et al, 2004). Foi observada uma alta deposição de lipídeos no surubim do Paraíba apenas no mesentério, porém no período em que houve esta elevação, a quantidade de ração oferecida aos animais era adequada, a qualidade da água era ideal para o cultivo da espécie, assim como a faixa de temperatura observada em ambos os grupos experimentais, mostrando que estes não foram fatores desafiadores para os peixes que participaram do experimento.…”

Section: Lipídeos Hepático Muscular E Plasmáticounclassified

Influência da temperatura no crescimento e nas respostas fisiológicas do Surubim do Paraíba Steindachneridion parahybae (Siluriformes: Pimelodidae) criados em cativeiro

Tolussi¹

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Studies on carcass quality traits in two populations of Coho salmon (Oncorhynchus kisutch): phenotypic and genetic parameters

Cited by 76 publications

References 17 publications

Genetic variation for carcass quality traits in cultured sea bass (Dicentrarchus labrax)

Genetic variation for carcass quality traits in cultured sea bass (Dicentrarchus labrax)

Quantitative trait locus analysis of hatch timing, weight, length and growth rate in coho salmon, Oncorhynchus kisutch

Influência da temperatura no crescimento e nas respostas fisiológicas do Surubim do Paraíba Steindachneridion parahybae (Siluriformes: Pimelodidae) criados em cativeiro

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