The article presents the results of research on the physiological and biochemical state of sturgeon juveniles using various functional loads at the early stages of post-embryonic development of sturgeon raised on an experimental diet in the presence of live food. The article analyzes the effectiveness of the application of functional load methods and feeding regimen to establish the physiological status of released juveniles to replenish natural populations. The article provides information about the stability of young sturgeon fish during the period of release from sturgeon hatcheries to replenish the natural population, further entry from fresh to sea water, and placement in places of natural feeding. The temperature and salinity of water for hydrobionts is a factor that has an integral effect on the activity of functionally important systems of the body at all stages of the life cycle. Juveniles obtained from artificial generations and grown in a combined way on various feeds retain high plasticity, adequate nutrition forms an osmoregulatory function and resistance to temperature conditions of the environment. It is proved experimentally that the feeding regime is an important factor affecting the fish-breeding and biological and physiological and biochemical parameters of young Russian sturgeon, stellate sturgeon and bester.
Aim. The study was designed for the theoretical analysis of the somatotypological characteristics of people of the second childhood, adolescent, youthful and mature age periods and their importance for sports orientation.Materials and methods.In course of the theoretical analysis, the search was performed in Scopus, eLIBRARY and PubMed databases using the keywords “somatotype”, “morphometry”, “somatometry”.Results. The presented materials are considered from the ecological, geographical, ethnical and territorial perspectives that have a significant impact on the constitutional heterogeneity of the population. The features of the somatotypological characteristics of boys and girls participating in various sports are being specified. Concluding the analysis of the literature, it can be stated that in a number of studies, certain ratios of the main body types were observed in healthy individuals of various ethnical and territorial groups. However, upon closer acquaintance with this material, significant contradictions are revealed regarding the nature and the degree of manifestation of these shifts, and, in some cases, even mutually exclusive statements are made.Conclusion. In view of the above, it is possible to conclude that further systematic study of these issues is needed.
Modern aquaculture is characterized by new approaches to the fish maintenance in conditions of high stocking density, associated with the restoration of the natural ecology of the body and based on the use of biologically active products. One aspect of this approach is to normalize altered the microbial environment of the organism in water of a recirculating aquaculture system with probiotics. Probiotics have the ability to regulate the microbiocenosis of the digestive tract, making a significant contribution to the absorption of nutrients. The use of probiotics can solve a number of problems related to the physiological state of animals and fish, increasing the efficiency of digestion, stimulating growth and development. Probiotic preparations of the new generation include probiotics “Ferm-KM” and “ProStor”, which are sorbed forms containing bacteria immobilized on solid sorbent particles. The article presents the results of the use of probiotics “Ferm-KM” and “ProStor” in the composition of production compound feeds for sturgeon fish. It was found that the use of new generation probiotic preparations in the diet of sturgeon fish contributes an increasing in the number of beneficial microorganisms in the intestine (up to 8.5x107 CFU/g) of Russian sturgeon. The effectiveness of introducing a new generation of probiotics into the compound feed for sturgeon fish has been proven, which contributes to increasing the resistance of the macroorganism to pathogenic microorganisms, improving the functioning of the digestive system. Probiotic strains introduced with preparations interact with the community of intestinal bacteria, releasing metabolites that affect the digestive, immune and hormonal systems of the body.
Extended Abstracts: Environmental and husbandry factors in sturgeon culture RESEARCH ON THE ABILITY OF 90-DAY-OLD Acipenser gueldenstaedti TO ADAPT TO SEAWATER I.Paschos, M. Tsoumani & L.Natsis Municipal Company of the Lake of Ioannina -Lorentzu Mavili- Anatoli-Ioannina 45 500-GREECEThe ability of 90 days old A. gueldenstaedti to adapt to high temperature, low level of dissolved oxygen and high salinity (conditions which are similar to environmental characteristics of our country) was investigated. A. gueldenstaedti were put into three tanks where the one of the above parameters was changed and the other two remained stable. From the results we noted that A.gueldenstaedti can adapt to temperatures of up to 29°C to dissolved oxygen as low as 3ppm and to salinities of up to 18%. Body weight increase was better in brackish water than in fresh water, the procedure of adaptation lasted 30 days with positive results for culture in brackish water.
Relevance Investigation of the cerebrospinal fluid system of children of different ages, especially pre-school and school periods of childhood, becomes essential, since the further development of the brain and its proper functioning depends on the way it functions. Considering the MRI indications of the elements of the cerebrospinal fluid system of children is important for the development of neurology and neurosurgery, it is necessary to consider gender differences in the brain size and structure.Objective To study the sex differences in the structure of the cerebrospinal fluid system in seven-year-old children.Material and Methods For the study, archival data on the sizes of the lateral ventricles of the brain of 120 children aged 7 (60 boys and 60 girls) were involved, in particular: 1) the length of the anterior horn; 2) the width of the anterior horn; 3) the length of the central part; 4) the width of the central part; 5) the length of the posterior horn; 6) the width of the posterior horn; 7) the length of the lower horn; 8) the anteroposterior size; 9) the distance between the anterior horns; 10) the distance between the posterior horns; 11) the length of the third ventricle; 12) the height of the third ventricle; 13) the length of the aqueduct; 14) the length of the fourth ventricle; 15) the height of the fourth ventricle. The studies were carried out using the method of magnetic resonance imaging. Quantitative indicators were assessed for compliance with the normal distribution using the KolmogorovSmirnov test. The accumulation, correction, systematization of the initial information were carried out in Microsoft Excel 2016. Statistical analysis was carried out using the Statistica 10.0 software (StatSoft Inc., USA). The results were considered statistically significant at p < 0.05.Results The data obtained in the study of the cerebrospinal fluid system in children during their pre-school period of childhood are indicators of the norm and can be used for diagnostic studies in the departments of radiation diagnostics. The bilateral asymmetry of the lateral ventricles of the brain in pre-school children, discovered during the work, is of crucial clinical significance. The morphometric indicators of the elements of the cerebrospinal fluid system should be considered by specialists in the study of brain neuroplasticity.Conclusion Analysis of the obtained in vivo encephalometric data indicates the presence of sexual variability of the brain and parameters of the structures of the cerebrospinal fluid.
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