Fat or lean? The quantitative genetic basis for selection strategies of muscle and body composition traits in breeding schemes of rainbow trout (Oncorhynchus mykiss)

Tobin, Declan; Kause, Antti; Mäntysaari, Esa; Martín, Samuel; Houlihan, D.F.; Dobly, Alexandre; Kiessling, Anders; Rungruangsak‐Torrissen, Krisna; Ritola, Ossi; Ruohonen, Kari

doi:10.1016/j.aquaculture.2006.07.023

Cited by 61 publications

(78 citation statements)

References 33 publications

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“…These results highlight that VisceFat% and MuscleLipid% are different lipid traits that would both need to be accounted for in a breeding program in order to control lipid deposition in selected strains. Similar findings were recently reported in O. mykiss by Tobin et al (2006) and Kause et al (2007b).…”

Section: Discussionsupporting

confidence: 79%

“…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%

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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: 79%

Section: Discussionsupporting

confidence: 69%

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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“…It was purely intended to act as a challenge environment to optimising the genetic response of traits such as protein and growth efficiency in salmonids [21,22,27]. However, as a long-term study, it has enabled us to investigate the effect of dietary protein on skeletal growth (length), which is important knowledge for future production of fish with high growth performance quality [32] as well as for future growth study in natural ecosystems where protein deposition is the main cause [12].…”

Section: Discussionmentioning

confidence: 99%

Different Dietary Levels of Protein to Lipid Ratio Affected Digestive Efficiency, Skeletal Growth, and Muscle Protein in Rainbow Trout Families

Rungruangsak‐Torrissen

Stien

Daae

et al. 2009

Scholarly Research Exchange

Self Cite

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Normal Protein (NP) and High Protein (HP) diets were provided to rainbow trout families from juvenile to maturity. Muscle protein concentration increased during growth and the protein to lipid (P/L) ratio was doubled at late stage with respect to the dietary P/L ratio. The HP-diet fish showed higher protein deposition in body and white muscle, and had lower condition factor due to protein deposition associated more with body length than body weight. Fish growth rates were decreased at maturation, and the HP-diet fish showed lower growth rate including the activity ratio of trypsin to chymotrypsin (T/C ratio) and feed efficiency. Trypsin and chymotrypsin specific activities were related to dietary protein levels, and the T/C ratio was related to intestinal weight and growth rate independent of the enzymes specific activity levels. The families with high growth capacity could double increase white muscle P/L ratio levels, compared to low and medium growth families, if they were fed on HP-diet. The digestive enzyme extracts from high growth families resulted in higher in vitro protein digestibility for all diets. The effect of dietary P/L ratio on digestion, skeletal growth (length) and the white muscle P/L ratio in fish with different growth capacities is illustrated.

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“…The body composition of fish has recently received attention in studies on nutrition, genetics, and health (Tobin et al, 2006) because of the increasing interest in the quality and safety of fish products (Dumas et al, 2010). Body composition is an important aspect of nutritional quality (Kamal et al, 2007;Breck, 2014) and affects the nutritional value and consumption quality of fish (Azam et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Length-weight relationship and prediction equations of body composition for growing-finishing cage-farmed Nile tilapia

et al. 2015

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-The objective of the present study was to develop models for predicting live weight from the lengthweight relationship and body composition of Nile tilapia. A total of 3,000 juvenile fish (initial weight = 28.6±4.16 g and standard length = 13.8±0.16 cm) were distributed into three circular cages (12 m 3 each). The fish were hand-fed extruded diets containing 332 g kg -1 of crude protein and 3,230 kcal kg -1 of digestible energy, until apparent satiety, twice daily, for 100 days. Twelve fish were collected from each cage every 20 days for measurements of body weight and length, and proximate composition analysis; statistical analysis was conducted using linear regression. The value of the slope b and the intercept for the length-weight relationship were 3.0604 and 0.0203, respectively. The prediction equations obtained for body moisture (MO), crude protein (CP), crude lipid (CL), and ash against body weight (BW) in g/100 g of fish were as follows: MO = 70.0090 -0.0071BW; CP = 13.7550 + 0.0037BW; CL = 9.2636 + 0.0057BW; and ash = 4.2392 -0.0024BW. It is possible to develop equations to predict body weight and composition, which can be used to control the production of Nile tilapia and improve its commercial value.

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Fat or lean? The quantitative genetic basis for selection strategies of muscle and body composition traits in breeding schemes of rainbow trout (Oncorhynchus mykiss)

Cited by 61 publications

References 33 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)

Different Dietary Levels of Protein to Lipid Ratio Affected Digestive Efficiency, Skeletal Growth, and Muscle Protein in Rainbow Trout Families

Length-weight relationship and prediction equations of body composition for growing-finishing cage-farmed Nile tilapia

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