CN105494259A - Method for producing duck eggs rich in organic selenium and zinc - Google Patents

Method for producing duck eggs rich in organic selenium and zinc Download PDF

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Publication number
CN105494259A
CN105494259A CN201511008118.XA CN201511008118A CN105494259A CN 105494259 A CN105494259 A CN 105494259A CN 201511008118 A CN201511008118 A CN 201511008118A CN 105494259 A CN105494259 A CN 105494259A
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zinc
duckweed
duck
egg
selenium
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CN105494259B (en
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裴正峰
林胜
蔡玉华
方丽波
向苏蓉
黄鹤春
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Anhui Fu Xi Xiang Biological Food Co Ltd
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Anhui Fu Xi Xiang Biological Food Co Ltd
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K67/00—Rearing or breeding animals, not otherwise provided for; New or modified breeds of animals
    • A01K67/02—Breeding vertebrates
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G31/00—Soilless cultivation, e.g. hydroponics
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K61/00—Culture of aquatic animals
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D9/00—Other inorganic fertilisers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81—Aquaculture, e.g. of fish
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81—Aquaculture, e.g. of fish
    • Y02A40/818—Alternative feeds for fish, e.g. in aquacultures
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/60—Fishing; Aquaculture; Aquafarming

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Zoology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Fodder In General (AREA)
  • Feed For Specific Animals (AREA)

Abstract

The invention discloses a method for producing duck eggs rich in organic selenium and zinc. The producing method comprises the steps of obtaining duckweed through cultivation and adding selenite and zinc salt in the cultivation process; using the duckweed to feed snails; using the snails to feed laying ducks, and obtaining the duck eggs rich in selenium and zinc after the laying ducks lay eggs. According to the method, the biological amplification effect is utilized, the inorganic selenite and zinc salt are absorbed by the duckweed, the duckweed serves as a main food source of the snails, the snails are a main animal food source of the laying ducks, and the inorganic selenite and zinc salt are converted into organic selenium and zinc. The content of the organic selenium and zinc in the duck eggs is a thousand times or above that of selenium and zinc in the water body, and the content of selenium and zinc in the duck eggs is improved remarkably.

Description

A kind of production method of rich Organic Selenium zinc duck's egg
Technical field
The present invention relates to agricultural and sideline technical field of food preparation, particularly relate to a kind of production method of rich Organic Selenium zinc duck's egg.
Background technology
Selenium, zinc are the requisite trace elements of human body, and be nutrient indispensable in Chinese Soclety of Nutrition's diet nutritional every day tension metrics, the too low meeting of intake causes functional or organic change, causes various diseases.Keshan disease, Kaschin-Beck disease, gastrointestinal disease etc. can be produced as human body lacks selenium; Scarce zinc can cause the diseases such as such as apocleisis is particular about food, immunologic function reduction, mental retardation.
Scarce selenium is an international problem, the low selenium zonation of a roughly broadwise is respectively had at southern hemisphere and northern hemisphere, approximately include more than 40 countries and regions, lack selenium as Finland is almost whole, the countries such as the U.S., Britain, Japan, Canada, New Zealand, Russia and Southeast Asia have large-area territory to lack selenium.
China is internationally recognized Que Xi big country, lacks selenium area and accounts for 72% of area, and wherein 30% is serious scarce selenium area, and the population living in scarce selenium area has 400,000,000 more than, and the selenium amount of especially children's excretion, more than adult, easily occurs selenium deficiency.Keshan disease known at present and Kaschin-Beck disease all occur in low selenium area, and based on children's morbidity.
In many areas, the world, especially more than PH6.5 soil, quick-acting Zn content is lower, and Soil Available Zinc is under-supply, causes plant tissue to lack zinc situation and occurs, cause the population in the whole world about 1/3rd to lack zinc.
Affecting in the factor of the validity of ZINC IN SOIL, except soil parent material and soil types, is exactly pH value.According to related documents, soil pH value is the most outstanding on the impact of effective zinc.Generally, along with the rising of soil pH value, Available zinc content reduces, and the soil that pH value is high easily lacks zinc.The soil that effective zinc is higher, pH is substantially below 6.0 or about 6.0, and more than pH6.5 Available Zn content in soil is all generally on the low side.
Although the shortage for selenium, zinc can take number of ways to supplement, generally believe, selenium, the zinc of human body are mainly derived from food, carry out Selenium Supplement, zinc is more suitable by tonic.
Duck's egg is the food that China resident enjoys a lot to eat, and the cultivation of egg duck is all very general in China the North and South.By supplementing rich selenium zinc feed in egg duck laying period, by metabolism, the selenium zinc in feed is transformed, runs up in duck's egg, consumer meets the demand of human body to selenium zinc by edible rich selenium zinc duck's egg, is that supplementary human body is to one of important channel of micro-demand.And consumer can control the food-intake of daily duck's egg, different as the staple food grain must eaten every day from rice, face etc., the number of duck's egg intake can control completely according to demand.
At present, the method for the rich selenium duck's egg of domestic production mainly adopts the method for adding in feed and containing selenium material, such as:
Publication No. is that Chinese patent application document that CN103989025A is called " raising method of a kind of selenium rich of egg duck feed and selenium rich of egg duck " discloses and a kind ofly in feed, adds the method producing high-selenium eggs containing selenium chitosan.But shitosan is as medical product, there is reducing blood lipid, hypoglycemic effect, medically do not advise long-term taking.Obviously, there is certain potential safety hazard in the selenium rich of egg that the method is produced.
Publication No. is the raising method that the application for a patent for invention document of CN101189960A discloses a kind of selenium-rich livestock and fowls, the method be before livestock and poultry are butchered in 1 ~ 5 day every day will containing selenium preparation (selenite, selenate, selenomethionine, Se-enriched yeast, selenizing polysaccharide, Agaricus campestris rich in selenium powder or selenium rich of egg white powder) be mixed into feed and/or drinking-water in, animal is allowed naturally to absorb, administration number of times is every day 1 time or repeatedly, improves the Se content of livestock meat and internal organs.But the method merely provides the raising method of the single selenium element of a kind of richness.
Publication No. is that Chinese patent application document that CN102415354A is called " a kind of production method of low-cost zinc-enriched egg " discloses and a kind ofly in feed, adds the method that zinc oxide produces high zinc egg.But because zinc oxide is water insoluble, poultry substantially can not absorb and directly excrete together with ight soil in the gastrointestinal tract after taking in, in addition, the effect that zinc oxide has forced moulting to poultry, stopping is laid eggs, obviously, in feed, directly interpolation zinc oxide feed for poultry produces rich zinc egg is unscientific.
Publication No. is that Chinese patent application document that CN103829055A is called " production method of a kind of low cholesterol, rich vitamin A, rich zinc egg " discloses and a kind ofly in feed, adds the method that zinc sulphate produces high zinc egg.Inorganic zinc sulphate not only has medium degree excitant to animal optic nerve, and animal wrongly take can cause nausea, vomit, suffer from abdominal pain, the acute gastroenteritis symptom such as diarrhoea, dewater time serious, suffer a shock, even can lethally die, minimum lethal dose (rat, per os) 2200mg/kg, obviously in poultry feed, directly zinc sulphate is added, not only can cause poultry apocleisis, and if zinc sulphate is not that very Homogeneous phase mixing can cause poultry poisoning, dead because of Excess free enthalpy zinc sulphate in feed because stimulating poultry optic nerve.
Therefore, how can produce the duck's egg being rich in the various nutritive element such as selenium, zinc also to need to make further research and exploitation.
Summary of the invention
The invention provides a kind of production method of rich Organic Selenium zinc duck's egg, the method can prepare the duck's egg being rich in selenium zinc, and when inorganic selenium, zinc compound amount of application are low, selenium in duck's egg albumen, Zn content significantly improve, but are no more than with reference to the eight kinds of element limitations of lead, chromium, cadmium, mercury, selenium, arsenic, copper, zinc etc. in Ministry of Agriculture relevant criterion NY861-2004 grain (containing cereal, beans, potato class) and goods.
The invention provides a kind of production method of rich Organic Selenium zinc duck's egg, comprise the following steps:
(1) cultivate acquisition duckweed, in incubation, add selenite and zinc salt;
(2) spiral shell is fed with duckweed;
(3) to feed egg duck with spiral shell, egg duck obtains rich selenium zinc duck's egg after laying eggs.
Aforementioned production method can plant duckweed in pond, and feeds spiral shell, stable level, mean depth of water about 2 meters can be selected, bed mud is deep, water quality is fertile, area 10000 square metres (1 hectare) left and right pond as culture pond; Before cultivating duckweed, select fair weather at the end of spring and the beginning of summer, carry out the removing of pond wild fishes.
As preferably, described selenite is sodium selenite, and described zinc salt is zinc sulphate.In order to prevent sodium selenite, toxicity is produced to aquatile, apply in pond after first sodium selenite can being diluted, point 8 places along all directions, pond four direction apply in pond, stir water body immediately after applying with thick bamboo pole, so that sodium selenite flowing and dilution fast in water body.Zinc sulphate Direct Uniform is sprinkled into pond.
Particularly, described duckweed is fine duckweed.Described spiral shell is Bellamya purificate.Described egg duck is Chaohu sheldrake.Fine duckweed belongs to Azolla imbricata section pteridophyte, and have good absorption (enrichment) ability to the selenium in water, zinc, in water, selenium, zinc are within the scope of finite concentration, not only can accelerate the growth of fine duckweed, but also can improve its biomass; Meanwhile, fine duckweed increases along with the increase of selenium, zinc concentration the biological concentration of selenium, zinc, and growth comparatively is slowly beneficial to the enrichment of fine duckweed to selenium, zinc.Bellamya purificate is the ideal biological kind of environmental monitoring, is the biological accumulation person of gas chromatography, can accumulate those and examine the bed mud or Organic substance in water that do not measure by conventional method, has stronger absorption (enrichment) ability to selenium, zinc.
As preferably, described selenite and zinc salt apply before duckweed is transplanted cultivate duckweed pond in, the amount of application of described selenite is 0.05 ~ 0.15g/m 3, the amount of application of zinc salt is 80 ~ 100g/m 3, the transplanting amount of duckweed is 0.05 ~ 0.15kg/m 3.
Further, described selenite and zinc salt are transplanted first 1 ~ 3 day in duckweed, apply in the pond of cultivation duckweed.
For promoting the growth of duckweed, improve the absorption efficiency of duckweed to selenite and zinc salt; As preferably, before duckweed is transplanted, in described pond, apply pig manure, the sowing amount of described pig manure is 0.1 ~ 0.15kg/m 3; 5 ~ 10 days after the transfer, then impose pig manure, sowing amount is 0.1 ~ 0.15kg/m 3.Described pig manure before duckweed is transplanted after anaerobism is banked up and is carried out fermentation maturity in 15 days, then to apply in pond.
As preferably, after duckweed transplants 10 ~ 15 days, thrown in by spiral shell in the pond of cultivation duckweed, the injected volume of spiral shell is 90 ~ 110/m 3.Release time of spiral shell should not too early or excessively late, if too early, duckweed biomass is little, also on the low side to the absorptive amount of selenium, zinc, can reduce the content of selenium, zinc in final duck's egg; And if excessively late, duckweed individuality is bigger than normal, and spiral shell is not easy to ingest, and turns to reproductive growth from nourishing and growing, produce spore, trophophyll reduce, spiral shell is eating not.
As preferably, described spiral shell is cultured to single individual weight and reaches 5 ~ 10g, after smashing, be used further to egg duck of feeding.Single individual weight is at the spiral shell of 5 ~ 10g, and not only fine and tender taste, is subject to liking of duck, and duck easily filters the broken shell after fragmentation, is also not easy to puncture duck tongue; What is more important, single individual weight is at the spiral shell of 5 ~ 10g, it absorbs selenium, the zinc amount of (enrichment) in process of growth, major part is accumulated in " spiral shell meat " (being commonly called as) by duck eating, as: head, foot, internal sac etc., be conducive to improving selenium, the content of zinc in duck's egg.
As preferably, carry out feeding of spiral shell in the mid-term of laying eggs of egg duck, every egg duck to be fed the spiral shell of 50 ~ 70g every day, feeds at least continuously 10 ~ 15 days.Plant the ovum of duck from being formed, growing up, discharge in (duck's egg), general needs 10 ~ 15 days, fed by continuous 10 ~ 15 days and be rich in the spiral shell of selenium, zinc, ensure that constant absorption (enrichment) selenium, zinc in duck's egg (duck ovum) forming process.
In order to promote that the selenium of absorption, zinc are transferred in duck's egg by egg duck, also tackling the feed that egg duck feeds and controlling, as preferably, laying eggs mid-term of egg duck, to feed manufactured feed to egg duck, by weight percentage, the formula of described manufactured feed is corn flour 35%, dregs of beans 10%, wheat flour 25%, dry bean dregs 20%, calcium monohydrogen phosphate 1.7%, stone flour 1%, salt 0.3%, additive premix 1%, fish meal 2%, conch meal 4%.
Compared with prior art, the beneficial effect that the present invention has has:
(1) the inventive method utilizes biological magnification, inorganic selenite and zinc salt is absorbed by duckweed, again using duckweed as the main food source of spiral shell, spiral shell is the primary animal food source of egg duck, inorganic selenite and zinc salt are converted into Organic Selenium zinc, and Organic Selenium Zn content, than selenium Zn content in water body more than high thousand times, significantly improves the selenium Zn content in duck's egg in duck's egg.
(2) the inventive method prepare duck's egg safety, environmental protection and nutritious, the demand of consumer to selenium zinc duck's egg can be met.
Embodiment
The sodium selenite adopted in the following example, zinc sulphate are commercially available product, also can synthesize according to known method.
The cultural method of duckweed is conventional cultural method, comprising: seed selection, sowing and the rational application of fertilizer.Improvements of the present invention are to adopt specific fertilizer in duckweed planting process, and fertilization time is different, and remaining concrete cultivation operation can refer to routine techniques and carries out.
Can to egg duck feeding green fodder and manufactured feed in conventional egg duck breeding process, green fodder mainly refers to watermelon peel, pumpkin, Ipomoea batatas, dish leaf etc.In the following example 1,2 because of processed group is identical with the green fodder feeding situation of control group thus omit.
Embodiment 1
Experiment place: In Chaohu City, Anhui Province Ba Zhen to mountain village, pond area 12000 square metres (1.2 hectares), mean depth of water 2.0 meters.
For examination egg duck: kind is Chaohu sheldrake.
For examination duckweed: fine duckweed.
For examination spiral shell: Bellamya purificate.
In the present embodiment, kind duckweed (expanding numerous) method of cultivating of duckweed is:
April 8, select face, hidding and sunny side pond expanding propagation, cover with plastic film after putting into kind of duckweed, use straw screen or mat covering and heat insulating evening.Along with the rising of temperature, plant duckweed and breed rapidly; May 15, plant duckweed and cover with full pond, the water surface moving on to large pond is put in a suitable place to breed.
May 13, use the amount of application of sodium selenite 0.1 gram, white vitriol 90 grams by every cubic metre of water body, in large pond, apply sodium selenite, zinc sulphate.
May 14, execute the pig manure 0.12 kilogram through fermenting, becoming thoroughly decomposed by every cubic metre of water body, spread fertilizer over the fields.
May 15, every cubic metre of water body puts into 0.12 kilogram, kind of duckweed.
May 22, execute the pig manure 0.12 kilogram through fermenting, becoming thoroughly decomposed by every cubic metre of water body, spread fertilizer over the fields.
June 12, pond 2/3rds water surface covers with duckweed, and put the young spiral shell of individual 1 ~ 2 gram of size in a suitable place to breed, every cubic metre of water body puts 50 in a suitable place to breed.
June 23, young spiral shell Individule mean weight reaches more than 5 grams, pulls young spiral shell out, feeds egg duck in mid-term of laying eggs, feed continuously by every egg duck 60 grams of spiral shells every day (band shell smash), the laying period manufactured feed of 100 grams.After 10 days, namely the duck's egg of output is rich in Organic Selenium zinc.
The formula of manufactured feed is: by weight percentage, corn flour 35%, dregs of beans 10%, wheat flour 25%, dry bean dregs 20%, calcium monohydrogen phosphate 1.7%, stone flour 1%, salt 0.3%, additive premix 1%, fish meal 2%, conch meal 4%.
Foregoing is experimental group.
Control group: egg duck is not fed rich selenium, the zinc spiral shell that said method cultivates out, but the spiral shell of fishing for out from ordinary pond, river small stream irrigation canals and ditches of feeding, all the other are identical with experimental group.
Measure total selenium content, the zinc content of edible portion (duck ovum) in the present embodiment duck's egg, the content of selenium in the AFS DETERMINATION duck's egg that assay method specifies according to GB5009.93-2010 " mensuration of selenium in food ", and the content of zinc in GB/T5009.14-2003 " mensuration of Zinc in Foods " aas determination duck's egg.
Table 1: selenium, Zn content in embodiment 1 duck ovum
Process Se content (μ g/100g) Zn content (mg/100g)
Control group 15.68 1.67
Experimental group 119.95 7.92
After testing, the duck's egg of experimental group output, in every 100 grams of duck ovum, total Se content is 100 microgram ~ 130 micrograms, average out to 119.95 micrograms, comparatively control group improves 7.65 times; In every 100 grams of duck ovum, Zn content is 7.21 milligrams ~ 8.87 milligrams, and average out to 7.92 milligrams, comparatively control group improves 4.74 times.
Embodiment 2:
Experiment place: Xia Dian village, dam town, In Chaohu City, Anhui Province, pond area 15000 square metres (1.5 hectares), mean depth of water 2.02 meters.
For examination egg duck: kind is Chaohu sheldrake.
For examination duckweed: fine duckweed.
For examination spiral shell: Bellamya purificate.
In the present embodiment, kind duckweed (expanding numerous) method of cultivating of duckweed is: April 10, select face, hidding and sunny side pond expanding propagation, cover with, use straw screen or mat covering and heat insulating evening after putting into kind of duckweed with plastic film.Along with the rising of temperature is just bred rapidly; May 16, plant duckweed and cover with full pond, move on to the large pond water surface and put in a suitable place to breed.
May 13, use the amount of application of sodium selenite 0.1 gram, white vitriol 90 grams by every cubic metre of water body, in large pond, apply sodium selenite and zinc sulphate.
May 15, execute the pig manure 0.12 kilogram through fermenting, becoming thoroughly decomposed by every cubic metre of water body, spread fertilizer over the fields.
May 15, every cubic metre of water body puts into 0.15 kilogram, kind of duckweed.
May 22, every cubic metre of water body is executed through fermentation, the pig manure 0.12 kilogram that becomes thoroughly decomposed, spreads fertilizer over the fields.
June 11, pond 2/3rds water surface covers with duckweed, and put the young spiral shell of individual 1 ~ 2 gram of size in a suitable place to breed, every cubic metre of water body puts 50 in a suitable place to breed.
June 25, young spiral shell Individule mean weight reaches more than 5 grams, pulls young spiral shell out, by each egg duck 60 grams of spiral shells every day (band shell smash), 100 grams conventional laying period manufactured feed feed egg duck in mid-term of laying eggs, feed continuously.After 10 days, namely the duck's egg of output is rich in Organic Selenium zinc.
The formula of manufactured feed is: by weight percentage, corn flour 35%, dregs of beans 10%, wheat flour 25%, dry bean dregs 20%, calcium monohydrogen phosphate 1.7%, stone flour 1%, salt 0.3%, additive premix 1%, fish meal 2%, conch meal 4%.
Foregoing is experimental group.
Control group: egg duck is not fed the rich selenium zinc spiral shell that said method cultivates out, but the spiral shell of fishing for out from ordinary pond, river small stream irrigation canals and ditches of feeding, all the other are identical with experimental group.
The duck's egg of the present embodiment spiral shell egg duck output of feeding, entrust the total selenium content, the zinc content that measure edible portion (duck ovum), the content of selenium in the AFS DETERMINATION duck's egg that assay method specifies according to GB5009.93-2010 " mensuration of selenium in food ", and the content of zinc in GB/T5009.14-2003 " mensuration of Zinc in Foods " aas determination duck's egg.
Table 2: selenium, Zn content in embodiment 2 duck ovum
Process Se content (μ g/100g) Zn content (mg/100g)
Control group 16.25 2.13
Experimental group 122.03 8.07
After testing, by the duck's egg of said method output, in every 100 grams of duck ovum, total Se content is 107 microgram ~ 135 micrograms, and average out to 122.03 microgram, improves 7.51 times than control group; In every 100 grams of duck ovum, Zn content is 7.03 milligrams ~ 9.25 milligrams, and average out to 8.07 milligrams, improves 3.79 times than control group.
Embodiment 3
Experiment place: spring village, dam town, In Chaohu City, Anhui Province, pond area 10000 square metres (1.0 hectares), mean depth of water 1.95 meters.
For examination egg duck: kind is Chaohu sheldrake.
For examination duckweed: fine duckweed.
For examination spiral shell: Bellamya purificate.
In the present embodiment, kind duckweed (expanding numerous) method of cultivating of duckweed is: April 15, select face, hidding and sunny side pond expanding propagation, cover with, use straw screen or mat covering and heat insulating evening after putting into kind of duckweed with plastic film.Along with the rising of temperature is just bred rapidly; May 16, plant duckweed and cover with full pond, move on to the large pond water surface and put in a suitable place to breed.
May 16, use the amount of application of sodium selenite 0.1 gram, white vitriol 90 grams by every cubic metre of water body, in large pond, apply sodium selenite and zinc sulphate.
May 17, execute the pig manure 0.12 kilogram through fermenting, becoming thoroughly decomposed by every cubic metre of water body, spread fertilizer over the fields.
May 18, every cubic metre of water body puts into 0.12 kilogram, kind of duckweed.
May 25, execute the pig manure 0.12 kilogram through fermenting, becoming thoroughly decomposed by every cubic metre of water body, spread fertilizer over the fields.
June 12, pond 2/3rds water surface covers with duckweed, and put the young spiral shell of individual 1 ~ 2 gram of size in a suitable place to breed, every cubic metre of water body puts 50 in a suitable place to breed.
June 27, young spiral shell Individule mean weight reaches more than 5 grams, pulls young spiral shell out, by each egg duck 60 grams of spiral shells every day (band shell smash), 100 grams conventional laying period manufactured feed feed egg duck in mid-term of laying eggs, feed continuously.After 15 days, namely the duck's egg of output is rich in Organic Selenium zinc.
The formula of manufactured feed is: by weight percentage, corn flour 35%, dregs of beans 10%, wheat flour 25%, dry bean dregs 20%, calcium monohydrogen phosphate 1.7%, stone flour 1%, salt 0.3%, additive premix 1%, fish meal 2%, conch meal 4%.
Foregoing is experimental group.
Control group 1: egg duck is not fed the rich selenium zinc spiral shell that said method cultivates out, but the spiral shell of fishing for out from ordinary pond, river small stream irrigation canals and ditches of feeding, all the other are identical with experimental group.
Control group 2: common green fodder of feeding is adjusted to the duckweed that said method of feeding cultivates, and scale of feeding identical with former green fodder (namely every egg duck feeds 150 grams every day), all the other are identical with control group 1.
The duck's egg of the present embodiment spiral shell egg duck output of feeding, entrust the total selenium content, the zinc content that measure edible portion (duck ovum), the content of selenium in the AFS DETERMINATION duck's egg that assay method specifies according to GB5009.93-2010 " mensuration of selenium in food ", and the content of zinc in GB/T5009.14-2003 " mensuration of Zinc in Foods " aas determination duck's egg.
Table 3: selenium, Zn content in embodiment 3 duck ovum
After testing, by the duck's egg of said method output, in every 100 grams of duck ovum, total Se content is 110 microgram ~ 132 micrograms, and average out to 118 microgram, improves 7.4 times than control group 1, improves 4.55 times than control group 2; In every 100 grams of duck ovum, Zn content is 7.35 milligrams ~ 9.22 milligrams, and average out to 8.06 milligrams, improves 4.3 times than control group 1, improves 2.85 times than control group 2.

Claims (10)

1. a production method for rich Organic Selenium zinc duck's egg, is characterized in that, comprise the following steps:
(1) cultivate acquisition duckweed, in incubation, add selenite and zinc salt;
(2) spiral shell is fed with duckweed;
(3) to feed egg duck with spiral shell, egg duck obtains rich selenium zinc duck's egg after laying eggs.
2. production method as claimed in claim 1, it is characterized in that, described selenite is sodium selenite, and described zinc salt is zinc sulphate.
3. production method as claimed in claim 1, it is characterized in that, described duckweed is fine duckweed.
4. production method as claimed in claim 1, it is characterized in that, described spiral shell is Bellamya purificate.
5. production method as claimed in claim 1, is characterized in that, described selenite and zinc salt apply in the pond of cultivation duckweed before duckweed is transplanted, and the amount of application of described selenite is 0.05 ~ 0.15g/m 3, the amount of application of zinc salt is 80 ~ 100g/m 3, the transplanting amount of duckweed is 0.05 ~ 0.15kg/m 3.
6. production method as claimed in claim 5, is characterized in that, before duckweed is transplanted, in described pond, apply pig manure, the sowing amount of described pig manure is 0.1 ~ 0.15kg/m 3; 5 ~ 10 days after the transfer, then impose pig manure, sowing amount is 0.1 ~ 0.15kg/m 3.
7. production method as claimed in claim 5, is characterized in that, after duckweed transplants 10 ~ 15 days, thrown in by spiral shell in the pond of cultivation duckweed, the injected volume of spiral shell is 90 ~ 110/m 3.
8. production method as claimed in claim 1, is characterized in that, described spiral shell is cultured to single individual weight and reaches 5 ~ 10g, after smashing, be used further to egg duck of feeding.
9. production method as claimed in claim 1, is characterized in that, carry out feeding of spiral shell in the mid-term of laying eggs of egg duck, and every egg duck to be fed the spiral shell of 50 ~ 70g every day, feeds at least continuously 10 ~ 15 days.
10. production method as claimed in claim 9, is characterized in that, laying eggs mid-term of egg duck, to feed manufactured feed to egg duck, by weight percentage, the formula of described manufactured feed is corn flour 35%, dregs of beans 10%, wheat flour 25%, dry bean dregs 20%, calcium monohydrogen phosphate 1.7%, stone flour 1%, salt 0.3%, additive premix 1%, fish meal 2%, conch meal 4%.
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