Cage cultivation of bester in East Kazakhstan

Zharkenov, Damir Kayirkeldyevich; Pekli, József; Kirichenko, Olga; Zsuga, Katalin; Sadykulov, Тoleuhkan

doi:10.18380/szie.colum.2016.3.1.55

Cited by 2 publications

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hybrid bester (B)—a cross between beluga ( Huso huso Linnaeus, 1758) and sterlet ( Acipenser ruthenus Linnaeus, 1758)—is characterized by an excellent growth rate under aquaculture conditions, which may even surpass the rapid growth of the maternal species [ 14 ]. Bester produces high-quality caviar at a younger age compared to beluga [ 15 ]—a trait which places bester in the shortlist of the most popular hybrid sturgeons. Backcross hybridization of bester with the parental species has been previously practiced in Russia [ 16 ], but there is limited scientific information on the subject.…”

Section: Introductionmentioning

confidence: 99%

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

Dediu

Docan

Crețu

et al. 2021

Animals

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%

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

Dediu

Docan

Crețu

et al. 2021

Animals

View full text Add to dashboard Cite

show abstract

“…The government's decision to partially reimburse aquaculture producers for capital investments and the cost of feed has been credited for recent favorable trends (Figure 4) [23,104]. KazNIIRKh has also funded applied research to investigate the suitability of water bodies in southern and southeastern parts of the Republic for rearing carp and for cage culture of sturgeon in the east [163][164][165][166]. Progress has nevertheless been modest in comparison to neighboring Uzbekistan, where the industry has recovered more rapidly [161,167,168] and in Russia [169].…”

Section: Aquaculturementioning

confidence: 99%

The Changing Dynamics of Kazakhstan’s Fisheries Sector: From the Early Soviet Era to the Twenty-First Century

Graham

Pueppke

Nurtazin

et al. 2022

Water

View full text Add to dashboard Cite

Kazakhstan, a former Soviet republic that is now independent, lies near the center of arid Eurasia. Its sparse hydrographic network includes a small number of large rivers, lakes, and reservoirs, many ponds and smaller streams, as well as littoral zones bordering the Caspian Sea and the Aral Sea. A diverse fisheries sector, initially based on wild fish capture and later including aquaculture, developed in these waters during the Soviet era, when animal agriculture was unable to meet the protein needs of Soviet citizens. The sector, which was originally centered on the Volga–Caspian basin, was tightly managed by Moscow and benefitted from coordinated investments in research, infrastructure, and human resources, as well as policies to increase the consumption of fish products. Independence in 1991 administered a political and economic shock that disrupted these relationships. Kazakhstan’s wild fish harvests plummeted by more than two-thirds, and aquaculture collapsed to just 3% of its previous level. Per capita consumption of fish products also declined, as did processing capacity. Favorable recent policies to define fishing rights, incentivize investments, prevent illegal fishing, and make stocking more effective have helped to reverse these trends and stabilize the sector. Continued recovery will require additional steps to manage water resources sustainably, prioritize the use of water for fish habitats, and minimize the effects of climate change. This comprehensive assessment of Kazakhstan’s fisheries sector over the past century provides the basis to understand how long-term dynamic interactions of the environment with the political economy influence fisheries in Eurasia’s largest country.

show abstract

Cage cultivation of bester in East Kazakhstan

Cited by 2 publications

References 1 publication

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

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

The Changing Dynamics of Kazakhstan’s Fisheries Sector: From the Early Soviet Era to the Twenty-First Century

Contact Info

Product

Resources

About