Ouantitative Splanchnology study on European Catfish (Silurus glanis) Raised in Recirculating Aquaculture Systems
Keywords:
European catfish, RAS, quantitative splanchnology, anatomyAbstract
European catfish (Silurus glanis) is a species with considerable economic potential in aquaculture due to its adaptability and superior meat quality. The development of intensive breeding technologies has allowed the increase of production efficiency, making this species a viable choice for recirculating aquaculture systems (RAS) that have increased significantly in recent years in Europe and beyond. The aim of the study was to highlight the anatomical peculiarities of the internal organs of European catfish raised in an intensive, indoor recirculating aquaculture system (RAS), examining both morphological characteristics and quantitative splanchnology. Five male catfish, aged 2 years and 10 months, were studied. Among the results obtained, it was noted that the fish raised in the RAS up to the age of slaughter did not accumulate perivisceral fat, and the segments of the digestive tract were reduced in size, likely due to a diet based on dry feed. Thus, it can be said that the intensification of European catfish production has led to notable changes in the structure and function of internal organs, particularly within the digestive system, as a result of the feeding regime based on granulated dry feed. The particularities observed especially in the digestive tract reflect the adaptive responses of the fish to the environmental conditions and rearing practices used in intensive aquaculture.
References
Grozea, A., Acvacultură – Curs, Ed. Excelsior Art, Timișoara, 2002.
Copp, G. H., Britton, J. R., Cucherousset, J., García-Berthou, E., Kirk, R., Peeler, E., & Stakenas, S. (2009). Voracious invader or benign feline? A review of the environmental biology of European catfish (Silurus glanis) in its native and introduced ranges. Fish and Fisheries, 10(3), 252–282
Grozea, A., Ciprinicultură, Ed. Mirton, Timișoara, 2007.
Simeanu, C., Măgdici, E., Păsărin, B., Avarvarei, B., Simeanu, D., Quantitative and Qualitative Assessment of European Catfish (Silurus glanis) Flesh, Agriculture, 2022, 12(12), 2144.
Krasteva, V., Yankova-Bozadzhieva, M., Ivanova, A., Rearing of European catfish (Silurus glanis L.) in earthen ponds in polyculture with common carp larvae (Cyprinus carpio L.), Bulgarian Journal of Animal Husbandry, 2024, 61(3), 21-28.
Pronina, G., Mannapov, A. G., Petrushin, A., Rozumnaya, L., Koryagina, N., Technological Methods of Breeding and Rearing European Catfish, AACL Bioflux, 2022, 15(1), 520-531.
Linhart, O., Stech, L., Svarc, J., Rodina, M., Audebert, J.P., Grecu, J., Billard, R., The culture of the European catfish, Silurus glanis, in the Czech Republic and in France, Aquatic Living Resources, 2002, 15, 139–144.
Barbacariu, C. A., Rimbu, C. M., Burducea, M., Dirvariu, L., Miron, L.-D., Boiangiu, R.S., Dumitru, G., Todirascu-Ciornea, E., Comparative Study of Flesh Quality, Blood Profile, Antioxidant Capacity, and Intestinal Microbiota of European Catfish (Silurus glanis) Reared in Recirculating Aquaculture Systems and Earthen Ponds, Life, 2023, 13(6), 1282.
Havasi, M., Kumar, S., Nagy, Z., Beliczky, G., Nagy, S., Bercsenyi, M., Gal, D., Effects of Feeding Regime on Growth, Feed Conversion and Size Variation of Silurus glanis, Croatian Journal of Fisheries, 2015, 73(4), 142-147.
Gherescu, P., Dumitrescu, G., Pătruică, S., Ștef, L., Mihailov, S., Copil, M., Grozea, A., Study on the Influence of the Coriander (Coriandrum sativum) on the Chemical Composition of the Muscle in European Catfish (Silurus glanis), Scientific Papers: Animal Science and Biotechnologies, 2023, 56(2), 108-113
Hallier, A., Chevallier, S., Sérot, T., Prost, C., Influence of farming conditions on colour and texture of European catfish (Silurus glanis) flesh, Journal of the Science of Food and Agriculture, 2007, 87, 814–823.
Jonas, E., Ragyanski, M., Olah, J., Boross, L., Proteolytic Digestive Enzymes of Carnivorous (Silurus glanis L.), Herbivorous (Hypophthalmichthys molitrix Val.) and Omnivorous (Cyprinus carpio L.), Aquaculture, 1983, 30(1-4), 145-154.
Segner, H., Sundh, H., Buchmann, K., Douxfils, J., Sundell, K.S., Mathieu, C., Ruane, N., Jutfelt, F., Toften, H., Vaughan, L., Health of Farmed Fish: Its Relation to Fish Welfare and Its Utility as Welfare Indicator, Fish Physiology and Biochemistry, 2012, 38, 85–105
Bura, M., Grozea, A., Îndrumător de lucrări practice la Acvacultură. Lito USAMVB Timişoara. 1997.
