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Grass carp new breed breeds (one)
From;    Author:Stand originally

New breed of grass carp breed aquatics is city of national level Tianjin trades new aquatic product thoroughbred field, use crossbreeding technology, through belonging to a method that genetic material recombines, the new breed that all previous studies to preliminary Yo is become via old test. This breed is had grow fast, fight it is strong, good to go against a gender raise, can feed lead tall, flesh to pledge the characteristic with full class status of little, nutrition is pricked between delicate, flesh, breed a welcome with consumer, make this variety following introductions now, offer the reference in breeding.
One, biology is characteristic
1. Exterior configuration: Grass carp breeds new breed bodily form to grow a bit, submit cylinder form, ministry of the top of head is a bit smooth flat, petiole somewhat side is flat. Body length of 2 age fish is 4.51 times system is expensive, for 6.83 times body is wide, for 4.78 times the head is long, end handle is 1.46 times the power that it is end is high longer. Green gray of body lubricious back, two side ash is weak, abdominal milky white, pectoral tail fin is grayish, yellow fraction of celiac anal fin is lubricious.
2. Perch characteristics: Happy event those who live in pond water system is medium superstratum, be fond of group activity, have flee in disorder of the quickness when interference. When water lukewarm drop to when 12 ℃ are the following, activity the lower level at water system. Winter is in live through the winter in pond deep water.
3. Comfortable lukewarm function: In water lukewarm all can live inside limits of ℃ of 2 ℃ ~36. Grow water Wen Wei ℃ of 16 ℃ ~31, optimal grow water Wen Wei ℃ of 18 ℃ ~29, can live in water area of our country each district, grow development and natural live through the winter.
4. Feeding habits: The condition is raised to fall in the pond, new breed of grass carp breed aquatics is fish of a kind of polyphagia, fish food breeds with convention in phase of young, juvenile identical. It is to adult fish phase by fingerling slant the polyphagia fish of careless feeding habits. From fry (spray) rise when nutrition of the source outside beginning to go, basically photograph feed plankton rotifer kind, branch part kind, animal of dwell of organic and the young that do not have a section, drossy, bottom, to young adult fish period happy event feeds aquatic plant alga (Hei Zao of duckweed of the duckweed that be like sand, duckweed, violet back, impeller blade) . The condition is raised to fall in the pond, via the grass carp that artificial domestication raises, remove special happy event to feed yoke oar, soya-bean milk to reach its from fry begins nutrition of the source outside travel the ryegrass that black aquatic plants of duckweed of farinaceous makings and the grain bait makings that cooperate artificially and Sha Ping, float, violet back, impeller blade, dew gives birth to, tender grass and.
5. Dissolve oxygen characteristics: Quantity of oxygen of the dissolve in the water system that breeds a pool maintains all the year round in 4.5 milligram / rise above to be able to make sure grass carp is photographed normally feed and exuberant growth. When the dissolve oxygen in breeding water system the volume drops 3.5 milligram / litre the following when, of Chi Yu photograph appetite to be about to begin to decrease, grow be about suffocate suffocate. When the dissolve oxygen in breeding pool water system the volume drops 2.5 milligram / litre the following when, of Chi Yu photograph appetite to decrease apparently or do not eat feed. When the dissolve oxygen in breeding pool water system the volume drops 2.1 milligram / litre the following when, chi Yu already did not eat feed. When the dissolve oxygen in breeding pool water system the volume drops 1.5 milligram / litre the following when, chi Yu already began serious float head. When the dissolve oxygen in breeding pool water system the volume drops to 1.2 milligram / when rising, head of pool fish float is serious, begin choking death. 6. Grow characteristic: New breed of grass carp breed aquatics grows rapid, whole grow the process, normally the circumstance puts a pond to raise to 2 centimeters of ~3 from spray centimeter Xia Hua, need ~26 day 22 days. Body length grows the rapiddest period to be 1 age ~2 age, weight grows criterion with 2 age ~4 age for the fastest. When 4 age grow after above sex is mature begin to slow.
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