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3 carp fish products is fastened in Chongqing 3 gorge reservoir grows mediumly e
From;    Author:Stand originally

Breed test result
Local carp is in raise to 177 days of November 16 from May 24, 2007 period inside from 4.3 grams / end grows average 305 grams / end. The wool crop that high density of minor volume of 3 4 stere spends pot breed aquatics is 290.8 kilogram / pot (72.7 kilogram / stere) , average survival rate is 47.8% , the quantity that cast raise is 499.5 kilogram / pot, average feed changes coefficient to be 1.77:1.
Be in without Xi Jianli raise to 155 days of November 16 from June 15, 2007 period inside from 3.7 grams / end grows average 115 grams / end. The wool crop that high density of minor volume of 3 4 stere spends pot breed aquatics is 101.2 kilogram / pot (25.3 kilogram / stere) , average survival rate is 43.9% , the quantity that cast raise is 240.5 kilogram / pot, average feed changes coefficient to be 2.65 ∶ 1.
Lens carp is in Harbin to arrive from August 11, 2007 on November 16, raise via 98 days, from 27.4 grams / end grows average 188 grams / end. 3 wool crop that breed pot are 209.2 kilogram / pot (52.3 kilogram / stere) , average survival rate is 92.9% , the quantity that cast raise is 349.6 kilogram / pot, average feed is changed rate for 1.99:1.
Brief summary and conclusion
The breed aquatics 2007 experiments is a series of not akin carps grow the initial phase of comparative experiment, the different strain carp that aims to study Chinese other area is in of 3 gorge reservoir grow whether better. In breeding an experiment 2007, unwarrantable the 3 breed carp that acquires same norms, age and amount in same time undertakes growth contrasting experimenting below same condition. Local carp and the low survival rate that establish carp without stannum affected a result further. Low survival rate of the fish appears with put in a suitable place to breed norms 3~5 is overcome / end is concerned directly. Of short duration of pond of classics of Harbin lens carp is raised grow 27 grams / end begins to put in a suitable place to breed, survival rate is 93% , it is other of two kinds of carps double much. Test result shows the carp is in put in a suitable place to breed should be raised in the of short duration in the pond before 3 gorge reservoir do not be less than 25 grams / end. Small norms fry gets used to the environment of reservoir harder. Experiment the feed of 3 kinds of carps is changed rate all poorer, best is local carp, but low survival rate brings about this to occupy devoid conviction.
The carp 2008 breeds comparative experiment, american soybean association - 3 kinds of carps that international project suggests to answer to obtain same norms and age in same time, of different strain carp put in a suitable place to breed density wants identical, breed management to want to agree, the circumstance that only these additional requirements accord with issues experiment ability to undertake. 3 gorge reservoir breeds the carp in the experiment to grow poorer a lot of pertinent questions and reservoir environment are concerned. The abidance of reservoir microtherm and the system of periodic silty and muddy water that bring by deposit action restricted pot aquiculture. Water is warm all the time under 25 ℃ till July. Average water is warm was 19.5 ℃ in April, was 22 ℃ in May, was 24 ℃ in June, rose to ℃ of 26 ℃ ~27 in July, in August ℃ of 28 ℃ ~29, dropped again in September ℃ of 25 ℃ ~26, average in October water is warm for 22 ℃ . Stage of production, the water inside the time of 65% is warm grow under the carp water is warm, the growth that affected a fish significantly and feed are changed rate. Low water is warm reach tall silt content to appear to will become those who affect pot of fisherman of 3 gorge reservoir to breed to last problem.
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