Assessment of the impact of the costs of building the floor profile on the technological flexibility of four-row buildings for free-box breeding of cows

V. Dimova* Department of Agrarian Engineering, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria (Manuscript received 18 March 2022; accepted for publication 20 May 2022) Abstract. A total of 20 popular technical and technological schemes of semi-open four-row bui
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Consumption of dissolved oxygen in rainbow trout (Oncorhynchus mykiss)

I. Sirakov, Y. Staykov , G. Djanovski Abstract. The purpose of the study was to determine the dissolved oxygen consumption of rainbow trout, cultivated in raceway. The consumption analysis is based on a process automatic oxygen measurement system and compares the theoretically calcula
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