A kind of four large Chinese carp fry cultural methods
Technical field
The present invention relates generally to a kind of four large Chinese carp fry cultural methods, belongs to the cultivation field.
Background technology
Gradually expansion along with the fish culture scale, the problem that does not run into before many appears gradually, many raisers are high with the fish meal protein content, easily cause fatty liver to occur, reduce survival rate and the growth rate of fish, in the process that cultivates not, do not note the variation of water body, the phenomenons such as mortality that cause fish also are recurrent.Therefore scientific, the standardization of cultivation, rationalize and be only basic that cultivation will pursue.
Summary of the invention
The object of the invention is exactly in order to remedy the defective of prior art, a kind of method of fry cultivation to be provided.
The present invention is achieved by the following technical solutions:
A kind of four large Chinese carp fry cultural methods may further comprise the steps:
(1) before putting in a suitable place to breed 3-10 days, with the admixture activation bacterium liquid water surface of splashing, depending on the water quality situation, during beginning 13-15 days 1 time is later on 28-30 days 1 time, the place that water quality is relatively poor, suitably shorten and splash the time, the amount of sprinkling is: 1-2 kilogram admixture activation bacterium liquid sprays 1-2 mu;
(2) seedling is put into cultivate the pond, make by the oxygenation of micro-pore oxygenation machine that dissolved oxygen reaches more than every liter of 5-7 milligram in the water body;
(3) after fry goes out shell, have a lot of egg membranes to stay in the water, with gauze along the water surface gently draw volume, the egg membrane of the water surface and dirty foam are adsorbed on the gauze, to remove egg membrane;
(4) after the yolk sac of fry disappears, begin again the yolk of throwing something and feeding.Method is that the gauze with the 1-2 layer encases yolk, squeezes brokenly, then pats on the water surface, moves while clapping, and yolk is evenly suspended in water, and throw something and feed 2-3 every day;
(5) 3-5 is after day, during the swimming of fry energy level, can throw something and feed and contain protozoic feed this moment, described feed is comprised of the raw material of following weight parts: fairy shrimp 15-20, sandworm 12-15, wheat bran 2-3, rice bran 1-2, dusty yeast 1-2, fly maggot powder 8-10, spirulina 2-3, sugarcane top 13-15, corn flour 3-5, peanut seedling 4-6, stalk 5-8, digua fig stem and leaf 3-5, dregs of beans 12-18, chicken manure 20-25, vinasse 3-6, manioc waste 5-7, Poria cocos 0.8-1, bark of eucommia 0.3-0.5, cordate houttuynia 0.6-0.8;
Fairy shrimp, sandworm, fly maggot powder, dregs of beans, the sugarcane top of above-mentioned weight portion are mixed, add water, make its water content reach 45-50%, add the admixture activation bacterium liquid of 0.8-1% and the calcium monohydrogen phosphate of 0.2-0.4%, sealing and fermenting 3-7 days;
Wheat bran, rice bran, dusty yeast, spirulina, corn flour, peanut seedling, stalk, digua fig stem and leaf, chicken manure, vinasse, manioc waste, Poria cocos, the bark of eucommia, the cordate houttuynia of above-mentioned weight portion are mixed, add water, make its water content reach 50-60%, the admixture activation bacterium liquid that adds 0.5-0.8%, the hydrolyzed casein of 0.01-0.02%, 0.01-0.02 the urea of sodium bicarbonate, 0.01-0.02%, the calcium monohydrogen phosphate of 0.02-0.04%, sealing and fermenting 6-8 days;
Above-mentioned two kinds of tunnings are mixed, after the drying, grind into superfines and feed;
The preparation method of described admixture activation bacterium liquid is: be lactobacillus acidophilus, bacillus subtilis, bafillus natto, Bifidobacterium, the mixing of streptococcus fecalis preparation of 3-4:3-4:1-2:3-4:1-2 with weight ratio, mix according to the ratio of weight ratio 1:40-60 with 30-35 ℃ of warm water, be stirred to be dissolved in water fully after, activate 20-40 minute and obtain described admixture activation bacterium liquid, containing total viable count is hundred million of 20-30/gram.
(5) during seedling culture, carried out a blowdown every 10-12 hour.
Advantage of the present invention is:
The method of cultivation fry of the present invention, before cultivation, spray the pond with activation bacterium liquid, can kill or suppress pathogenic microorganism and harmful substance, adjust the breeding ecological environment, increase dissolved oxygen in water, promote normal flora and useful algae activation growth in the breeding ecological system, keep the ecological balance of breeding water body; Throw something and feed with activation bacterium liquid fermented forage, directly strengthen absorption function and the diseases prevention anti-adversity ability of fish, promote healthy and strong growth, wherein the P elements in the calcium monohydrogen phosphate and calcium constituent are the activation active elements of enzyme and microorganism, can promote fermentation process, adopt the mode of classification fermentation in fermentation, strengthened the effect of fermentation, also add during the fermentation several medicinal herb componentses, further strengthened the resistance against diseases of fry, improved survival rate.
Embodiment
Embodiment 1
A kind of four large Chinese carp fry cultural methods may further comprise the steps:
(1) before putting in a suitable place to breed 3-10 days, with the admixture activation bacterium liquid water surface of splashing, depending on the water quality situation, during beginning 13-15 days 1 time is later on 28-30 days 1 time, the place that water quality is relatively poor, suitably shorten and splash the time, the amount of sprinkling is: 1-2 kilogram admixture activation bacterium liquid sprays 1-2 mu;
(2) seedling is put into cultivate the pond, make by the oxygenation of micro-pore oxygenation machine that dissolved oxygen reaches more than every liter of 5-7 milligram in the water body;
(3) after fry goes out shell, have a lot of egg membranes to stay in the water, with gauze along the water surface gently draw volume, the egg membrane of the water surface and dirty foam are adsorbed on the gauze, to remove egg membrane;
(4) after the yolk sac of fry disappears, begin again the yolk of throwing something and feeding.Method is that the gauze with the 1-2 layer encases yolk, squeezes brokenly, then pats on the water surface, moves while clapping, and yolk is evenly suspended in water, and throw something and feed 2-3 every day;
(5) 3-5 is after day, during the swimming of fry energy level, can throw something and feed and contain protozoic feed this moment, described feed is comprised of the raw material of following weight parts (kilogram): fairy shrimp 15-20, sandworm 12-15, wheat bran 2-3, rice bran 1-2, dusty yeast 1-2, fly maggot powder 8-10, spirulina 2-3, sugarcane top 13-15, corn flour 3-5, peanut seedling 4-6, stalk 5-8, digua fig stem and leaf 3-5, dregs of beans 12-18, chicken manure 20-25, vinasse 3-6, manioc waste 5-7, Poria cocos 0.8-1, bark of eucommia 0.3-0.5, cordate houttuynia 0.6-0.8;
Fairy shrimp, sandworm, fly maggot powder, dregs of beans, the sugarcane top of above-mentioned weight portion are mixed, add water, make its water content reach 45-50%, add the admixture activation bacterium liquid of 0.8-1% and the calcium monohydrogen phosphate of 0.2-0.4%, sealing and fermenting 3-7 days;
Wheat bran, rice bran, dusty yeast, spirulina, corn flour, peanut seedling, stalk, digua fig stem and leaf, chicken manure, vinasse, manioc waste, Poria cocos, the bark of eucommia, the cordate houttuynia of above-mentioned weight portion are mixed, add water, make its water content reach 60%, the admixture activation bacterium liquid of adding 0.8%, 0.02% hydrolyzed casein, 0.02 sodium bicarbonate, 0.02% urea, 0.04% calcium monohydrogen phosphate, sealing and fermenting 8 days;
Above-mentioned two kinds of tunnings are mixed, after the drying, grind into superfines and feed;
The preparation method of described admixture activation bacterium liquid is: be lactobacillus acidophilus, bacillus subtilis, bafillus natto, Bifidobacterium, the mixing of streptococcus fecalis preparation of 3:3:1:4:1 with weight ratio, mix according to the ratio of weight ratio 1:40-60 with 30-35 ℃ of warm water, be stirred to be dissolved in water fully after, activate 20-40 minute and obtain described admixture activation bacterium liquid, containing total viable count is hundred million of 20-30/gram.
(5) during seedling culture, carried out a blowdown every 12 hours.
By checking, this inventive method cultivation fry of using this year, with the conventional method cultivation, the survival rate of fry has improved 12% compared with the same period of last year.