Effect of probiotics on the leucogram of african sharptooth catfish in the conditions of industrial aquacultures

The shortage of fish feed of domestic production is one of the limiting factors for increasing the volume of fish production. The article analyzes the effectiveness of the use of granulated-extruded feed “BIFFINE” (Russia) in comparison with the extruded feed of the wellknown foreign brand “COPPENS” (the Netherlands) in the cultivation of African clary catfish and a hybrid of tilapia in a closed water supply system. The analysis of fish-breeding and biological indicators, as well as the assessment of the physiological state of the raised fish, was carried out. Comparative analysis of hematological and biochemical parameters of blood serum did not reveal significant differences. The evaluation of the feeding efficiency revealed slightly higher indicators of tilapia growth (p<0.05) and some physiological and biochemical parameters of the blood of the fish group that consumed Russian feed. The results of the study of white blood cells in the blood of the tilapia hybrid showed that the composition of white blood cells is dominated by lymphocytes (80.0–90.0%), monocytes (3.5–5.0%), neutrophils (6.5–11.0%) and basophils (0.5– 1.3%); a significant increase in glucose levels was found, which indicates the activation of the process of digestion of the carbohydrate part of the diet. In juvenile clary catfish, the stimulation of protein and glucose biosynthesis was noted, which indicates the optimization of protein and carbohydrate metabolism. Thus, when feeding fish with feed from different manufacturers, no differences were found in the functional state of the cultivated fish species. The tested brands of mixed feeds have a high nutritional value, which was confirmed by the obtained data of fishbreeding and biological indicators. However, it should be borne in mind that the technology of making mixed feed “BIFFINE” has the following advantage-soft processing of feed components of animal origin with the preservation of the native properties of protein, amino acids, fatty acids, vitamins and other essential nutrients, and the destruction of starch during hard processing by temperature and pressure to easily digestible carbohydrates, is performed separately.

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Evaluation of the effectiveness and productive effect of various dry combined feeds on the functional state of aquaculture objects under conditions of recircular systems

Ponomarev

Levina

Akhmedzhanova

et al. 2021

Rybovodstvo I Rybnoe Hozjajstvo (Fish Breeding and Fisheries)

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Biological effect of feed probiotic additives “Subtilis-Zh” and “ATYSH” on the body of carp yearlings. Part 1. Blood counts

Kilyakova¹,

Miroshnikova²,

Arinzhanov³

et al. 2022

Fish Breeding and Fisheries

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The results of a study of the biological effect of feed probiotic additives Subtilis-Zh” (0,04 ml/kg of feed) and “ATYSH” (0,08 g/kg of feed), which are based on cultures of bacteria B. subtilis, B. licheniformis, E. faecium and L. acidophilus, on growth, morphological and biochemical parameters of blood, as well as amino acid and chemical composition of carp muscle tissue. The analysis of the growth intensity showed a significant increase in body weight from the 4th week of the experiment in groups receiving separately the probiotic “Subtilis-Zh” and jointly the probiotics “Subtilis-Zh” and “ATYSH”. Hematological indicators demonstrate a significant increase in the concentration of leukocytes in the experimental group that consumed the complex of probiotic drugs “Subtilis-Zh” and “ATYSH” in comparison with the control by 19,8% (P < 0,05), respectively. A similar blood pattern was observed when studying a carp leukogram, where a significant increase in lymphocytes was found. The number of red blood cells in the blood corresponded to normal physiological values. At the same time, the indicator of hemoglobin content has increased significantly, which indicates active metabolic processes. The use of the feed probiotic additive “Subtilis-Zh” favorably affected the growth, development and hematological parameters of carp. The combined use of this drug with the feed probiotic additive “ATYSH” allowed to normalize the own bacterial flora of the intestine and strengthen the resistance of the fish organism to the effects of pathogens.

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Effect of probiotics on the leucogram of african sharptooth catfish in the conditions of industrial aquacultures

Cited by 2 publications

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Evaluation of the effectiveness and productive effect of various dry combined feeds on the functional state of aquaculture objects under conditions of recircular systems

Evaluation of the effectiveness and productive effect of various dry combined feeds on the functional state of aquaculture objects under conditions of recircular systems

Biological effect of feed probiotic additives “Subtilis-Zh” and “ATYSH” on the body of carp yearlings. Part 1. Blood counts

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