Stručni rad
FISHERIES IN CZECHOSLOVAKIA
Krešimir Fašaić
; Istraživačko-razvojni centar za ribarstvo Fakulteta poljoprivrednih znanosti Sveučilišta u Zagrebu, Jugoslavija
Zdenek Adamek
; Katedra za ribarstvo i hidrobiologiju Univerze za agronomiju Brno, Češkoslovačka
Sažetak
Longtime tradition of fisheries in Czechoslovakia which dates from the 12th century has some specific characteristics. Traditional technology of carp culturing (two and four years culturing) has been kept on 52 000 ha of fish farms basing its production by using natural fish food which gives the best quality of consumption fish.
The results of the culture are: After the first year of culturing the average individual weight was 30— -50 g, at the end of the second year 250-500 g, at the end of the third year 1200-1800 g and at the end of the fourth year 2200-3000 g. Due to geographic and climate conditions in Czechoslovakia the individual weight could be even after the third year of life 2000-2800 g applying some specific technology.
One of the method of the intensive fish production on carp ponds is polyculture.
There is a list of fish used in polyculture with carp: predatory fish: pike fish (Esox lucius), pike perch (Stizostedion lucioperca), sheat (Siluris glanis), eel (Anguilla anguilla), rainbow trout (Salmo gairdneri), (Coregonus lavaetus maraena, Coregenus peled), herbiovorous fish — grass carp, big head and silver carp (Ctenopharyngodon idella, Hypophthalmichthys molitrix and Aristichthys nobilis) and tinch fish (Tinea tinea).
Besides traditional technologies new industrial methods of intensive fish culturing are introduced using channels and net cages.
An intensifications of fish culturing was enabled by artificial spawing of fish in the warm waste waters of energetic and industrial objects.
The basic force in the development of fisheries in Czechoslovakia is scientific and researching activity as well as education.
Since 1921. has existed The Institute for Fisheries and Hydrobiology in Vodnany, then The Institute for Fisheries and Hydrobiology in Bratislava, The Agricultural University in Brno has also The Department for Fisheries and Hydrobiology and the subject fisheries exists in other high schools in Prag, Češke Budejovice and Nitra. They also have special schools, one in Trebon lasting for three years and the other one in Vodnjani lasting for four years educating fish professionals.
The development of fisheries and an increase of fish production is improved by trade, packing; the quality of products and advertising.
Ključne riječi
Hrčak ID:
77115
URI
Datum izdavanja:
20.6.1990.
Posjeta: 1.572 *