VIRTUAL TOUR - FRESHWATER FARM

The spawning time in the Czarci Jar farm starts at the end of October, when the first salmonids begin spawning. During autumn, Atlantic salmon, brown trout, sea trout and then peled are spawned. Burbot spawns in January and rainbow trout in February/March. The rest of the species have spawning times in the spring. A few years ago, the new hatchery, comprising a closed recirculation system, was built. Several other fish species are spawned in this unit i.e. burbot, asp, ide, dace, vimba bream and pike. Usually the females are stripped first. The fish abdomen is carefully pressed; the eggs should flow over the bowl wall from a height of a few centimetres. Eggs are collected in small bowls and inspected; to prevent mixing of good and poor quality eggs.

When approximately 0.5 litres of eggs have been collected, the eggs are fertilized. The sperm of salmonids is distributed directly over the eggs. Water is added to assist with the mixing of the sperm and the eggs. Swelling is the process, which directly follows fertilization. The trout eggs are extremely susceptible to shaking during this time. Eggs become resistant to shaking only when the eyes appear. Trout eggs swell for about 3 hours at water temperatures below 3°C. Only after this time can eggs be counted and transferred to the incubation jars. Prior to transfer, the eggs may be washed a few times to prevent aggregation into clumps in the incubation jars.