scholarly journals Influence of Genetic Selection for Growth and Broodstock Diet n-3 LC-PUFA Levels on Reproductive Performance of Gilthead Seabream, Sparus aurata

Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 519
Author(s):  
Shajahan Ferosekhan ◽  
Serhat Turkmen ◽  
Cathaysa Pérez-García ◽  
Hanlin Xu ◽  
Ana Gómez ◽  
...  
Keyword(s):  
Reproductive Performance ◽  
Egg Quality ◽  
Sparus Aurata ◽  
Genetic Selection ◽  
Growth Trait ◽  
High Growth ◽  
Gilthead Seabream ◽  
Commercial Diet ◽  
Selection For ◽  
Broodstock Diet

Genetic selection in gilthead seabream (GSB), Sparus aurata, has been undertaken to improve the growth, feed efficiency, fillet quality, skeletal deformities and disease resistance, but no study is available to delineate the effect of genetic selection for growth trait on GSB reproductive performance under mass spawning condition. In this study, high growth (HG) or low growth (LG) GSB broodstock were selected to evaluate the sex steroid hormones, sperm, egg quality and reproductive performance under different feeding regime of commercial diet or experimental broodstock diet containing either fish oil (FO) or vegetable oil (VO) based diet. Under commercial diet feeding phase, broodstock selected for either high growth or low growth did not show any significant changes in the egg production per kg female whereas egg viability percentage was positively (p = 0.014) improved by the high growth trait broodstock group. The experimental diet feeding results revealed that both growth trait and dietary fatty acid composition influenced the reproductive performance of GSB broodstock. In the experimental diet feeding phase, we observed high growth trait GSB males produced a higher number of sperm cells (p < 0.001) and also showed a higher sperm motility (p = 0.048) percentage. The viable egg and larval production per spawn per kg female were significantly improved by the broodstock selected for high growth trait and fed with fish oil-based diet. This present study results signifies that gilthead seabream broodstock selected on growth trait could have positive role in improvement of sperm and egg quality to produce viable progeny.

scholarly journals Erratum: Ferosekhan et al. Influence of Genetic Selection for Growth and Broodstock Diet n-3 LC-PUFA Levels on Reproductive Performance of Gilthead Seabream, Sparus Aurata. Animals 2021, 11, 519

Animals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2957
Author(s):  
Shajahan Ferosekhan ◽  
Serhat Turkmen ◽  
Cathaysa Pérez-García ◽  
Hanlin Xu ◽  
Ana Gómez ◽  
...  
Keyword(s):  
Reproductive Performance ◽  
Sparus Aurata ◽  
Genetic Selection ◽  
Gilthead Seabream ◽  
Selection For ◽  
Broodstock Diet

The authors wish to make the following corrections to this paper [...]

scholarly journals Reproductive performance of gilthead seabream (Sparus aurata) broodstock showing different expression of fatty acyl desaturase 2 and fed two dietary fatty acid profiles

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Shajahan Ferosekhan ◽  
Hanlin Xu ◽  
Serhat Turkmen ◽  
Ana Gómez ◽  
Juan Manuel Afonso ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Reproductive Performance ◽  
Egg Quality ◽  
Sparus Aurata ◽  
Fatty Acid Desaturase ◽  
Fatty Acyl ◽  
Reproductive Hormones ◽  
Gilthead Seabream ◽  
Fatty Acid Profiles

Abstract Previous studies have shown that it is possible to nutritionally program gilthead seabream offspring through fish oil (FO) replacement by vegetable oils (VO) in the broodstock diet, to improve their ability to grow fast when fed low fish meal (FM) and FO diets during grow-out phase. However, in those studies broodstock performance was reduced by the VO contained diet. Therefore, the present study aimed to determine if it is possible to replace FO by a mixture of FO and rapeseed oil (RO) with a specific fatty acid profile in broodstock diets, without altering gilthead seabream broodstock reproductive performance. Besides, the study also aimed to evaluate the reproductive performance of broodstock with different expression of fatty acid desaturase 2 gene (fads2) a key enzyme in synthesis of long chain polyunsaturated fatty acids. For that purpose, broodfish having either a high (HD) or low (LD) expression of fads2 were fed for three months during the spawning season with two diets containing different fatty acid profiles and their effects on reproductive hormones, fecundity, sperm and egg quality, egg biochemical composition and fads2 expression were studied. The results showed that blood fads2 expression in females, which tended to be higher than in males, was positively related to plasma 17β-estradiol levels. Moreover, broodstock with high blood fads2 expression showed a better reproductive performance, in terms of fecundity and sperm and egg quality, which was correlated with female fads2 expression. Our data also showed that it is feasible to reduce ARA, EPA and DHA down to 0.43, 6.6 and 8.4% total fatty acids, respectively, in broodstock diets designed to induce nutritional programming effects in the offspring without adverse effects on spawning quality. Further studies are being conducted to test the offspring with low FM and FO diets along life span.

scholarly journals Selection for Growth and Precocity Alters Muscle Metabolism in Nellore Cattle

Metabolites ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 58 ◽  
Author(s):  
Nara Regina Brandão Cônsolo ◽  
Juliana da Silva ◽  
Vicente Luiz Macedo Buarque ◽  
Angel Higuera-Padilla ◽  
Luis Carlos Garibaldi Simon Barbosa ◽  
...  
Keyword(s):  
Muscle Protein ◽  
Fat Metabolism ◽  
Genetic Selection ◽  
Muscle Metabolism ◽  
High Growth ◽  
High Concentration ◽  
Longissimus Lumborum ◽  
Nellore Cattle ◽  
Selection For ◽  
The Relationship

To clarify the relationship between beef genetic selection for growth and precocity with muscle metabolism and metabolites, we performed metabolomic analysis using Longissimus lumborum (LL) muscle from Nellore cattle with divergent selection for these traits (high growth, HG; low growth, LG; high precocity, HP; low precocity, LP). Genetic potential for growth affected muscle protein and energetic metabolism. HG animals had a high concentration of arginine, carnosine, and leucine compared to LG animals. HP animals presented a high concentration of glutamine, betaine, creatinine, isoleucine, carnitine, acetyl carnitine, and lower levels of glucose compared to LP animals, affecting protein and fatty acid metabolism. Intensity of selection (high or low) was correlated with changes in protein metabolism, and the type of selection (growth or precocity) affected fat metabolism. In conclusion, both HG and HP appear to be correlated with a high concentration of protein metabolites and changes in protein metabolic pathways, while selection for precocity is more correlated with changes in fat metabolism compared to animals selected for growth.

Induction of spawning in gilthead seabream, Sparus aurata L., by a long-acting GnRH agonist and its effects on egg quality and daily timing of spawning

Aquaculture ◽  
1997 ◽  
Vol 154 (3-4) ◽  
pp. 349-359 ◽  
Author(s):  
A. Barbaro ◽  
A. Francescon ◽  
G. Bozzato ◽  
A. Merlin ◽  
P. Belvedere ◽  
...  
Keyword(s):  
Gnrh Agonist ◽  
Egg Quality ◽  
Sparus Aurata ◽  
Gilthead Seabream ◽  
Long Acting ◽  
Timing Of Spawning

scholarly journals Immune Status and Hepatic Antioxidant Capacity of Gilthead Seabream Sparus aurata Juveniles Fed Yeast and Microalga Derived β-glucans

Marine Drugs ◽  
2021 ◽  
Vol 19 (12) ◽  
pp. 653
Author(s):  
Bruno Reis ◽  
Ana Teresa Gonçalves ◽  
Paulo Santos ◽  
Manuel Sardinha ◽  
Luís E. C. Conceição ◽  
...  
Keyword(s):  
Gene Expression ◽  
Immune Status ◽  
Sparus Aurata ◽  
Dietary Treatment ◽  
Gilthead Seabream ◽  
Oxidative Stress Biomarkers ◽  
Yeast Saccharomyces Cerevisiae ◽  
Commercial Diet ◽  
Immune Parameters ◽  
Dietary Concentration

This work aimed to evaluate the effects of dietary supplementation with β-glucans extracted from yeast (Saccharomyces cerevisiae) and microalga (Phaeodactylum tricornutum) on gene expression, oxidative stress biomarkers and plasma immune parameters in gilthead seabream (Sparus aurata) juveniles. A practical commercial diet was used as the control (CTRL), and three others based on CTRL were further supplemented with different β-glucan extracts. One was derived from S. cerevisiae (diet MG) and two different extracts of 21% and 37% P. tricornutum-derived β-glucans (defined as Phaeo21 and Phaeo37), to give a final 0.06% β-glucan dietary concentration. Quadruplicate groups of 95 gilthead seabream (initial body weight: 4.1 ± 0.1 g) were fed to satiation three times a day for 8 weeks in a pulse-feeding regimen, with experimental diets intercalated with the CTRL dietary treatment every 2 weeks. After 8 weeks of feeding, all groups showed equal growth performance and no changes were found in plasma innate immune status. Nonetheless, fish groups fed β-glucans supplemented diets showed an improved anti-oxidant status compared to those fed CTRL at both sampling points (i.e., 2 and 8 weeks). The intestinal gene expression analysis highlighted the immunomodulatory role of Phaeo37 diet after 8 weeks, inducing an immune tolerance effect in gilthead seabream intestine, and a general down-regulation of immune-related gene expression. In conclusion, the results suggest that the dietary pulse administration of a P. tricornutum 37% enriched-β-glucans extract might be used as a counter-measure in a context of gut inflammation, due to its immune-tolerant and anti-oxidative effects.

The effect of dietary protein and lipid from squid and fish meals on egg quality of broodstock for gilthead seabream (Sparus aurata)

Aquaculture ◽  
1997 ◽  
Vol 148 (2-3) ◽  
pp. 233-246 ◽  
Author(s):  
H. Fernández-Palacios ◽  
M. Izquierdo ◽  
L. Robaina ◽  
A. Valencia ◽  
M. Salhi ◽  
...  
Keyword(s):  
Dietary Protein ◽  
Egg Quality ◽  
Sparus Aurata ◽  
Gilthead Seabream

Influence of broodstock gilthead seabream (Sparus aurata L.) dietary fatty acids on egg quality and egg fatty acid composition throughout the spawning season

Aquaculture ◽  
1999 ◽  
Vol 170 (3-4) ◽  
pp. 323-336 ◽  
Author(s):  
Eduardo Almansa ◽  
Ma.José Pérez ◽  
Juana Rosa Cejas ◽  
Pilar Badı́a ◽  
José Enrique Villamandos ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Egg Quality ◽  
Sparus Aurata ◽  
Dietary Fatty Acids ◽  
Spawning Season ◽  
Gilthead Seabream

scholarly journals 17α-ethynylestradiol prevents the natural male-to-female sex change in gilthead seabream (Sparus aurata L.)

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
M. Pilar García Hernández ◽  
Isabel Cabas ◽  
M. Carmen Rodenas ◽  
Marta Arizcun ◽  
Elena Chaves-Pozo ◽  
...  
Keyword(s):  
Plasma Levels ◽  
Sparus Aurata ◽  
Recovery Period ◽  
Sex Change ◽  
Control Fish ◽  
Gilthead Seabream ◽  
Commercial Diet ◽  
The Third ◽  
Female Sex ◽  
Male To Female

AbstractExposure to 17α-ethynylestradiol (EE2, 5 μg/g food) impairs some reproductive events in the protandrous gilthead seabream and a short recovery period does not allow full recovery. In this study, spermiating seabream males in the second reproductive cycle (RC) were fed a diet containing 5 or 2.5 μg EE2/g food for 28 days and then a commercial diet without EE2 for the remaining RC. Individuals were sampled at the end of the EE2 treatment and then at the end of the RC and at the beginning of the third RC, 146 and 333 days after the cessation of treatment, respectively. Increased hepatic transcript levels of the gene coding for vitellogenin (vtg) and plasma levels of Vtg indicated both concentrations of EE2 caused endocrine disruption. Modifications in the histological organization of the testis, germ cell proliferation, plasma levels of the sex steroids and pituitary expression levels of the genes coding for the gonadotropin β-subunits, fshβ and lhβ were detected. The plasma levels of Vtg and most of the reproductive parameters were restored 146 days after treatments. However, although 50% of the control fish underwent sex reversal as expected at the third RC, male-to female sex change was prevented by both EE2 concentrations.

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