Effects of flow rate on growth performance and welfare of juvenile turbot (Scophthalmus maximusL.) in recirculating aquaculture systems

2014 ◽  
Vol 47 (4) ◽  
pp. 1341-1352 ◽  
Author(s):  
Guoxiang Sun ◽  
Meng Li ◽  
Jie Wang ◽  
Ying Liu
Keyword(s):  
Growth Performance ◽  
Flow Rate ◽  
Recirculating Aquaculture ◽  
Recirculating Aquaculture Systems ◽  
Juvenile Turbot

scholarly journals Effects of Stocking Density on Growth Performance and Stress Responses of Bester and Bester ♀ × Beluga ♂ Juveniles in Recirculating Aquaculture Systems

Animals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 2292
Author(s):  
Lorena Dediu ◽  
Angelica Docan ◽  
Mirela Crețu ◽  
Iulia Grecu ◽  
Alina Mogodan ◽  
...  
Keyword(s):  
Growth Performance ◽  
Stress Responses ◽  
Stocking Density ◽  
Serum Cortisol ◽  
Lower Serum ◽  
Serum Parameters ◽  
Hematological Indices ◽  
Recirculating Aquaculture ◽  
Crowding Stress ◽  
Recirculating Aquaculture Systems

The study aimed to compare the growth performance and physiological responses of bester (B) and backcrossed bester ♀ × beluga ♂ (BB) in response to crowding stress under different stocking densities, as well as to establish a threshold stocking density for rearing BB in a recirculating aquaculture system (RAS) without welfare impairment. For this purpose, in the first trial (T1), B (181.15 ± 21.21 g) and BB fingerlings (181.98 ± 28.65 g) were reared in two stocking densities of 2 kg/m2 and 4 kg/m2 in fiberglass tanks (1 m3) for 6 weeks. In a parallel trial (T2), the BB hybrids (335.24 ± 39.30 g) were kept in four initial stocking densities, ranging from 5 kg/m2 to 12 kg/m2. The results of T1 revealed better growth indices (i.e., final mean weight, weight gain, specific growth rate) at lower stocking densities for both hybrids; however, in terms of growth performance, the BB hybrid showed better results when compared with the B hybrid. BB hybrids registered significantly (p < 0.05) lower serum cortisol and MDA and higher lysozyme than B hybrids, showing higher tolerance to crowding stress. Nevertheless, at higher densities, selected serum parameters (i.e., hematological indices, cortisol, glucose, protein, malondialdehyde, lysozyme) and growth performance indices used to evaluate the hybrids indicate that high stocking density could affect the growth and welfare of BB hybrids, and that the selected serum parameters could be used as good indicators for chronic stress caused by overcrowding conditions.

scholarly journals The effect of low pH on physiology, stress status and growth performance of turbot (Psetta maxima L.) cultured in recirculating aquaculture systems

2018 ◽  
Vol 49 (10) ◽  
pp. 3456-3467 ◽  
Author(s):  
Vasco C. Mota ◽  
Jochem Hop ◽  
Luís A. Sampaio ◽  
Leon T. N. Heinsbroek ◽  
Marc C. J. Verdegem ◽  
...  
Keyword(s):  
Growth Performance ◽  
Low Ph ◽  
Recirculating Aquaculture ◽  
Recirculating Aquaculture Systems ◽  
Psetta Maxima
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