KARP

Karp, 
domesticated form of carp, in ponds divorce. K. Breeds differ in squamate cover: flaky, mirror, naked. In the Soviet Union withdrew K. ramchaty Ukrainian and Ukrainian scaly. K. teplolyubiv (makes the temperature to 35 ° C), neprihotliv, lives in a pond with a small amount of oxygen, makes a significant pollution. It reaches sexual maturity at 3-5-year. Spawning in the spring svezhezalitoy vegetation, fertility 700-800 thousand eggs. The young first feed on zooplankton, and then transferred to food zoobenthos (mainly larvae of chironomids). By the fall starts to eat vegetation. 

K. - the main breeding site in the warm pond fish farms in most countries of the world. Gives the largest increase with water temperature 20-28 ° C and oxygen content in water during the summer 5-7 mg / l, in winter - not less than 4 mg / liter. When lowering the water temperature to 14 ° C. Since food intake is reduced drastically, and at 1-2 ° C, it falls into the sedentary state, stops eating and loses weight. Lack of food and the contents in poor conditions lead to the degeneration of K. In order to increase the use of compressed ryboproduktivnosti pond planting and feeding KA (in pond making food in addition to natural food KA). At normal planting density, calculated only on the availability of natural food in the pond, K. usually not fed, with 2 -, 3 -, 4 - and 5-fold landings in the pond make special feed mixture to a paste K. masses or granules. The composition of mixtures are: cake, flakes, grain legumes (lupine, wiki, peas, lentils, soy, beans), grains, flour and bran cereals (corn, rye, barley, sorghum), horse chestnut, malt sprouts, beer drobina, and feed of animal origin: fish, meat and blood meal, waste slaughterhouses and meat plants, etc. In the state of specialized cyprinid farms K. fed fodder production. Feeding K. increases output per 1 ha of fish ponds in the area 5-6 times or more. In the USSR karpovodstvo distributed in Russia, Ukraine, Belarus and some other places. Ponds used for breeding fish and a variety of reservoirs, including rice checks. Разводят following breeds: furfuraceous K., K. mirror (with the scales, dispersed through the body), the linear K. (with scales, located on the lateral line), K. naked (without scales), Ukrainian and Ukrainian ramchatogo K. K. squamate In fish farms of the European part of USSR fingerlings reach 25-30 g, commodity dvuhletki - 500-800 g, trehletki - 1200-2000 in the USSR in 1971 gosrybhozy received 646.7 thousand centners K., fish farm collective and state farms - 160 thousand . centners. Work on the removal of rocks frigostable K., and move it to C.

KARP