CN102835600A - Method for replacing zinc oxide component in piglet feed by using rice hull powder - Google Patents
Method for replacing zinc oxide component in piglet feed by using rice hull powder Download PDFInfo
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- CN102835600A CN102835600A CN2012103405138A CN201210340513A CN102835600A CN 102835600 A CN102835600 A CN 102835600A CN 2012103405138 A CN2012103405138 A CN 2012103405138A CN 201210340513 A CN201210340513 A CN 201210340513A CN 102835600 A CN102835600 A CN 102835600A
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Abstract
The invention provides a method for replacing a zinc oxide component in a piglet feed by using rice hull powder. The zinc oxide component taking up 0.2 to 0.3% by weight percentage of the piglet feed is replaced by a rice hull powder finished product obtained by the mechanical activation and winnowing to remove impurities. The mechanical activation means crushing the rice hulls by a stereoscopic grinder with the crushing time of 2 to 5 minutes; and the winnowing to remove impurities means removing the impurities from the rice hull powder after the the rice hull powder is subject to mechanical activation by a winnowing machine, and the particle size of the rice hull powder finished product is 1,000 to 10,000 meshes. The rice hull powder obtained by the method provided by the invention can effectively absorb the harmful factors in the intestinal tracts, such as harmful gas, toxins and heavy metals, and improve the micro-ecological environment of the intestinal tracts, so that the digestibility of the nutrient substances can be improved and the diarrhea rate can be reduced; and meanwhile, the feeding experiments show that the feed cost is saved and the waste rice hull powder is utilized efficiently under the premise that the feeding effect of the piglets is not reduced.
Description
Technical field
The invention belongs to field of feed, relate in particular to a kind of method that adopts mechanical activation and selection by winnowing removal of impurities to handle zinc oxide component in the alternative pig starter feed of gained powdered rice hulls.
Background technology
The digestive system of early-weaned piglets is not grown perfect as yet, be difficult to bear by the liquid breast milk to cereal property solid feed change the nutrition that brings stress and the environmental stress that brings of environment cataclysm, increase the sensitiveness of wean back piglet inevitably to potential pathogenic microorganism in the environment; In addition; Because piglet is vulnerable, the back grice diarrhoea that causes weaning, and follow the stagnation of piglet growth; Produce cad pig when situation is serious, even cause piglet dead.According to statistics, the diarrhea of weaned piglets rate reaches as high as more than 40% on producing, and the total augment weight rate descends more than 33%, and Swine Production is caused heavy economic losses.
Big quantity research and breed facts have proved; In pig starter feed, add the zinc oxide (adding 3 kg zinc oxide in per approximately 1000 kg pig starter feeds) of high dose; Can significantly reduce grice diarrhoea; Improve the survival rate and the speed of growth of piglet, thereby in pig starter feed, add zinc oxide in recent years and be widely used.But the long-term a large amount of uses of zinc oxide will have a strong impact on body to other trace elements absorbed levels, and it is uneven to cause copper, iron to absorb, and causes the reduction of nutriment biological value; High zinc also can form the chelating salt compound with the phytic acid in the feed, reduces the hydrolysis efficiency of phytase in the feed; Long-term use high zinc feed can destroy permanent steady mechanism in the body, make piglet occur ochrodermia, by hair slightly disorderly curl, phenomenon such as anaemia; In addition, excessive zinc oxide can finally cause environmental pollution with defecate in environment, is unfavorable for the sustainable development of animal husbandry and agricultural.
China is paddy rice plantation big country, and the rice husk resource is very abundant, and wide material sources are cheap.As agricultural wastes, rice husk is rich in cellulose, hemicellulose, silica, but fat and Protein content are lower; In addition; Because conventional physics (like mechanical disintegration) or chemical treatment method (like ammoniation process, enzymatic isolation method) are difficult to fully destroy the rice husk structure in the prior art; Its active ingredient discharged than difficulty fully or effectively utilized by animal, and the treatment process reaction temperature is high, energy consume high, the time is long, efficient is low.Therefore, rice husk is used for commercial production but the rarely seen field of fodder that is used for all the time in a large number.
Background technology
The digestive system of early-weaned piglets is not grown perfect as yet, be difficult to bear by the liquid breast milk to cereal property solid feed change the nutrition that brings stress and the environmental stress that brings of environment cataclysm, increase the sensitiveness of wean back piglet inevitably to potential pathogenic microorganism in the environment; In addition; Because piglet is vulnerable, the back grice diarrhoea that causes weaning, and follow the stagnation of piglet growth; Produce cad pig when situation is serious, even cause piglet dead.According to statistics, the diarrhea of weaned piglets rate reaches as high as more than 40% on producing, and the total augment weight rate descends more than 33%, and Swine Production is caused heavy economic losses.
Big quantity research and breed facts have proved; In pig starter feed, add the zinc oxide (adding 3 kg zinc oxide in per approximately 1000 kg pig starter feeds) of high dose; Can significantly reduce grice diarrhoea; Improve the survival rate and the speed of growth of piglet, thereby in pig starter feed, add zinc oxide in recent years and be widely used.But the long-term a large amount of uses of zinc oxide will have a strong impact on body to other trace elements absorbed levels, and it is uneven to cause copper, iron to absorb, and causes the reduction of nutriment biological value; High zinc also can form the chelating salt compound with the phytic acid in the feed, reduces the hydrolysis efficiency of phytase in the feed; Long-term use high zinc feed can destroy permanent steady mechanism in the body, make piglet occur ochrodermia, by hair slightly disorderly curl, phenomenon such as anaemia; In addition, excessive zinc oxide can finally cause environmental pollution with defecate in environment, is unfavorable for the sustainable development of animal husbandry and agricultural.
China is paddy rice plantation big country, and the rice husk resource is very abundant, and wide material sources are cheap.As agricultural wastes, rice husk is rich in cellulose, hemicellulose, silica, but fat and Protein content are lower; In addition; Because conventional physics (like mechanical disintegration) or chemical treatment method (like ammoniation process, enzymatic isolation method) are difficult to fully destroy the rice husk structure in the prior art; Its active ingredient discharged than difficulty fully or effectively utilized by animal, and the treatment process reaction temperature is high, energy consume high, the time is long, efficient is low.Therefore, rice husk is used for commercial production but the rarely seen field of fodder that is used for all the time in a large number.
Summary of the invention
Above-mentioned defective to the prior art existence; The object of the present invention is to provide a kind of method that substitutes zinc oxide component in the pig starter feed with powdered rice hulls; The powdered rice hulls that makes with this method can substitute the zinc oxide component that accounts for said pig starter feed 0.2～0.3% by weight percentage; Under the prerequisite that does not reduce the piglet feeding effect, both reduced feed cost, discarded powdered rice hulls is efficiently utilized.
Technical scheme of the present invention is following:
A kind of method that substitutes zinc oxide component in the pig starter feed with powdered rice hulls; Be with handling the alternative by weight percentage zinc oxide component that accounts for said pig starter feed 0.2～0.3% of gained powdered rice hulls finished product through mechanical activation and selection by winnowing removal of impurities; Said mechanical activation is pulverized rice husk for adopting three-dimensional mill; The pulverizing time is 2～5 minutes; Said selection by winnowing removal of impurities is treated to adopts winnowing machine that the powdered rice hulls of handling through said mechanical activation is carried out the removal of impurities processing, and said powdered rice hulls finished product granularity is 1000～10000 orders; All the other components in said powdered rice hulls finished product and the said pig starter feed are mixed, make the pig starter feed finished product.
Its further technical scheme is:
Except that the zinc oxide component that is replaced, all the other the component grinding particle sizes in the said pig starter feed are 30～40 orders.
The present invention has following useful technique effect:
The present invention adopts mechanical activation and selection by winnowing impurity-removing method that rice husk is handled.At first utilize three-dimensional mill that rice husk is carried out activation; Its grinding particle size is reached more than 1000 orders; Mechanical force such as the friction in the dependence activation process, impact, collision, shearing; The molecular structure and the physical and chemical performance of rice husk change, and the mechanical energy that the above-mentioned mechanical force of part produces is converted into the interior ability of rice husk, thereby the rice husk chemism is increased; Utilize winnowing machine that the powdered rice hulls of handling through above-mentioned mechanical activation is carried out removal of impurities again and handle, make the powdered rice hulls granularity reach uniformity.Compare with conventional physics (mechanical disintegration) in the prior art or chemistry (ammoniation process, enzymatic isolation method); Above-mentioned processing method can effectively be destroyed the fibrillar meshwork structure of rice husk cell membrane; And need not add chemical solvent in the course of reaction; Reaction temperature is low, energy consumption is low, the time is short, efficient is high, is a kind of clean preparation method of zero-emission.
Test result shows, handles its specific area increase of preceding rice husk more than 2 times with the powdered rice hulls that the inventive method makes, and average volume particle diameter can effectively adsorb the pernicious gas (NH that can cause diarrhoea in the enteron aisle below 13 μ m
3), toxin (aflatoxin AFB
1) and heavy metal injurious factors such as (Pb, Cd), improve the intestinal microecology environment, thereby improve the digestibility of nutriment, reduce diarrhea rate; Feeding experiment proves, substitutes the zinc oxide component that accounts for pig starter feed 0.2～0.3% by weight percentage with this powdered rice hulls, can improve the daily gain and average daily feed intake of piglet; The material anharmonic ratio slightly increases; Diarrhea rate reduces, and survival rate is high, and the comprehensive feeding effect of piglet improves; The present invention has realized the efficient utilization and the dietization of agricultural wastes rice husks, under the prerequisite that the piglet feeding effect does not descend, can save feed cost, avoids the pollution of the use of zinc oxide to environment simultaneously.
Summary of the invention
Above-mentioned defective to the prior art existence; The object of the present invention is to provide a kind of method that substitutes zinc oxide component in the pig starter feed with powdered rice hulls; The powdered rice hulls that makes with this method can substitute the zinc oxide component that accounts for said pig starter feed 0.2～0.3% by weight percentage; Under the prerequisite that does not reduce the piglet feeding effect, both reduced feed cost, discarded powdered rice hulls is efficiently utilized.
Technical scheme of the present invention is following:
A kind of method that substitutes zinc oxide component in the pig starter feed with powdered rice hulls; Be with handling the alternative by weight percentage zinc oxide component that accounts for said pig starter feed 0.2～0.3% of gained powdered rice hulls finished product through mechanical activation and selection by winnowing removal of impurities; Said mechanical activation is pulverized rice husk for adopting three-dimensional mill; The pulverizing time is 2～5 minutes; Said selection by winnowing removal of impurities is treated to adopts winnowing machine that the powdered rice hulls of handling through said mechanical activation is carried out the removal of impurities processing, and said powdered rice hulls finished product granularity is 1000～10000 orders; All the other components in said powdered rice hulls finished product and the said pig starter feed are mixed, make the pig starter feed finished product.
Its further technical scheme is:
Except that the zinc oxide component that is replaced, all the other the component grinding particle sizes in the said pig starter feed are 30～40 orders.
The present invention has following useful technique effect:
The present invention adopts mechanical activation and selection by winnowing impurity-removing method that rice husk is handled.At first utilize three-dimensional mill that rice husk is carried out activation; Its grinding particle size is reached more than 1000 orders; Mechanical force such as the friction in the dependence activation process, impact, collision, shearing; The molecular structure and the physical and chemical performance of rice husk change, and the mechanical energy that the above-mentioned mechanical force of part produces is converted into the interior ability of rice husk, thereby the rice husk chemism is increased; Utilize winnowing machine that the powdered rice hulls of handling through above-mentioned mechanical activation is carried out removal of impurities again and handle, make the powdered rice hulls granularity reach uniformity.Compare with conventional physics (mechanical disintegration) in the prior art or chemistry (ammoniation process, enzymatic isolation method); Above-mentioned processing method can effectively be destroyed the fibrillar meshwork structure of rice husk cell membrane; And need not add chemical solvent in the course of reaction; Reaction temperature is low, energy consumption is low, the time is short, efficient is high, is a kind of clean preparation method of zero-emission.
Test result shows, handles its specific area increase of preceding rice husk more than 2 times with the powdered rice hulls that the inventive method makes, and average volume particle diameter can effectively adsorb the pernicious gas (NH that can cause diarrhoea in the enteron aisle below 13 μ m
3), toxin (aflatoxin AFB
1) and heavy metal injurious factors such as (Pb, Cd), improve the intestinal microecology environment, thereby improve the digestibility of nutriment, reduce diarrhea rate; Feeding experiment proves, substitutes the zinc oxide component that accounts for pig starter feed 0.2～0.3% by weight percentage with this powdered rice hulls, can improve the daily gain and average daily feed intake of piglet; The material anharmonic ratio slightly increases; Diarrhea rate reduces, and survival rate is high, and the comprehensive feeding effect of piglet improves; The present invention has realized the efficient utilization and the dietization of agricultural wastes rice husks, under the prerequisite that the piglet feeding effect does not descend, can save feed cost, avoids the pollution of the use of zinc oxide to environment simultaneously.
The specific embodiment
Come further to explain the present invention below in conjunction with concrete embodiment.
Embodiment 1
Get the discarded rice husk of meter factory; Earlier with three-dimensional mill (Sino-Russian scientific and technological transformation center, Jiaxing product, model: the LT-I) this rice husk is carried out mechanical activation, 2 minutes pulverizing time; To pass through the powdered rice hulls of above-mentioned mechanical activation processing then and insert winnowing machine (the sharp disintegrating apparatus of Shengzhou wind Co., Ltd product; Model: carry out removal of impurities 250) and handle, 3 minutes time, obtain the about 1000 purpose powdered rice hulls finished products of granularity.
Embodiment 2
Get the discarded rice husk of meter factory; Earlier this rice husk is carried out mechanical activation, 5 minutes pulverizing time, will pass through powdered rice hulls that above-mentioned mechanical activation handles then and insert and carry out the removal of impurities processing in the winnowing machine (the same) with three-dimensional mill (the same); 3 minutes time, obtain the about 10000 purpose powdered rice hulls finished products of granularity.
Measure the order number and the average volume particle diameter of powdered rice hulls finished product among embodiment 1～embodiment 2 respectively; Adopt static nitrogen adsorption specific surface area appearance (precise and tiny Gao Bo, Beijing science and technology Co., Ltd product; Model: the JW-BK) specific area (BET value) of rice husk before the processing and the powdered rice hulls after the processing among mensuration embodiment 1～embodiment 2, and the powdered rice hulls after the mensuration processing is to harmful intestinal tract gas (NH
3), toxin (aflatoxin AFB
1) and the adsorption levels of heavy metal (Pb, Cd), concrete assay method is following:
(1) mensuration of ammonia:
Salicylic acid AAS according to the GB7481-87 regulation is measured.
(2) aflatoxin AFB
1Mensuration:
Get 16 10mL band plug centrifuge tubes, 8 is one group, and every group does not add, adds about 75mg rice husk raw material, embodiment 1 powdered rice hulls finished product (1000 order) and embodiment 2 powdered rice hulls finished products (10000 order) respectively, and 2 repetitions are done in every kind of processing, and average; 1～8,9～16 pipes add the PBS cushioning liquid of 9mL pH2.0 and pH6.0 respectively, and to 1～4, add 0.5mL AFB in 9～12 pipes
1Standard liquid (AFB1 is available from U.S. Sigma company, and mass concentration is 5mg/mL) is settled to 10ml with the PBS buffer solution again, specifically adds quadrat method shown in table 1 and table 2; Cover the centrifuge tube lid, after the abundant vibration evenly, continuous vibration 2h in 37 ℃ of constant-temperature shaking water-baths, the centrifugal 15min of 4000r/min; Get supernatant and measure AFB with the HPLC method
1Content.
The invention belongs to field of feed, relate in particular to a kind of method that adopts mechanical activation and selection by winnowing removal of impurities to handle zinc oxide component in the alternative pig starter feed of gained powdered rice hulls.
The specific embodiment
Come further to explain the present invention below in conjunction with concrete embodiment.
Embodiment 1
Get the discarded rice husk of meter factory; Earlier with three-dimensional mill (Sino-Russian scientific and technological transformation center, Jiaxing product, model: the LT-I) this rice husk is carried out mechanical activation, 2 minutes pulverizing time; To pass through the powdered rice hulls of above-mentioned mechanical activation processing then and insert winnowing machine (the sharp disintegrating apparatus of Shengzhou wind Co., Ltd product; Model: carry out removal of impurities 250) and handle, 3 minutes time, obtain the about 1000 purpose powdered rice hulls finished products of granularity.
Embodiment 2
Get the discarded rice husk of meter factory; Earlier this rice husk is carried out mechanical activation, 5 minutes pulverizing time, will pass through powdered rice hulls that above-mentioned mechanical activation handles then and insert and carry out the removal of impurities processing in the winnowing machine (the same) with three-dimensional mill (the same); 3 minutes time, obtain the about 10000 purpose powdered rice hulls finished products of granularity.
Measure the order number and the average volume particle diameter of powdered rice hulls finished product among embodiment 1～embodiment 2 respectively; Adopt static nitrogen adsorption specific surface area appearance (precise and tiny Gao Bo, Beijing science and technology Co., Ltd product; Model: the JW-BK) specific area (BET value) of rice husk before the processing and the powdered rice hulls after the processing among mensuration embodiment 1～embodiment 2, and the powdered rice hulls after the mensuration processing is to harmful intestinal tract gas (NH
3), toxin (aflatoxin AFB
1) and the adsorption levels of heavy metal (Pb, Cd), concrete assay method is following:
(1) mensuration of ammonia:
Salicylic acid AAS according to the GB7481-87 regulation is measured.
(2) aflatoxin AFB
1Mensuration:
Get 16 10mL band plug centrifuge tubes, 8 is one group, and every group does not add, adds about 75mg rice husk raw material, embodiment 1 powdered rice hulls finished product (1000 order) and embodiment 2 powdered rice hulls finished products (10000 order) respectively, and 2 repetitions are done in every kind of processing, and average; 1～8,9～16 pipes add the PBS cushioning liquid of 9mL pH2.0 and pH6.0 respectively, and to 1～4, add 0.5mL AFB in 9～12 pipes
1Standard liquid (AFB1 is available from U.S. Sigma company, and mass concentration is 5mg/mL) is settled to 10ml with the PBS buffer solution again, specifically adds quadrat method shown in table 1 and table 2; Cover the centrifuge tube lid, after the abundant vibration evenly, continuous vibration 2h in 37 ℃ of constant-temperature shaking water-baths, the centrifugal 15min of 4000r/min; Get supernatant and measure AFB with the HPLC method
1Content.
Table 1 AFB
1That measures adds quadrat method 1
Table 2 AFB
1That measures adds quadrat method 2
(3) mensuration of heavy metal Pb:
Get each two groups of 0.7g rice husk raw material, embodiment 1 powdered rice hulls finished product (1000 order) and embodiment 2 powdered rice hulls finished products (10000 order) respectively; The lead nitrate solution that adds 50mL concentration and be 100mg/L is in the 150mL conical flask; Regulate the pH value; Two groups of solution are in respectively in the environment of pH2.0 and pH6.0, in 37 ℃ of constant-temperature shaking water-baths constantly the vibration (200r/min), behind the 3h with above-mentioned solution in the centrifugal 10min of 3000r/min; Get supernatant with atomic absorption instrument (the intelligent wind in Shanghai Analytical Instrument Co., Ltd product, model: GGX-610) measure Pb concentration.
(4) mensuration of heavy metal Cd:
With the assay method of above-mentioned heavy metal Pb, different is that the plumbi nitras in the said determination method is replaced to caddy.
[0030]Measure the result referring to table 3～table 7.
The order number of table 3 embodiment 1～embodiment 2 powdered rice hulls finished products and average volume particle diameter are measured
Rice husk and the BET value of handling the back powdered rice hulls before table 4 is handled
Can know by table 3 and table 4 data; Its granularity of powdered rice hulls of handling with the inventive method can reach more than 1000 orders; Average volume particle diameter is less than 13 μ m; Its specific area of rice husk raw material increases more than 2 times before handling, and proves that the inventive method can effectively destroy the fibrillar meshwork structure of rice husk cell membrane, significantly increases fiber specific surface area.
Table 5 sample is to NH
3Adsorbance
Can know that by table 5 data along with the refinement of particle, sample is to NH
3Adsorbance in rising trend; The adsorption effect of 10000 order powdered rice hulls is best under the wet basis state, and adsorbance reaches 6.4115mg/g, shows the increase along with the mechanical activation time, and powdered rice hulls is to pernicious gas NH
3Adsorption levels totally strengthen.
Sample is to AFB under the different pH values of table 6
1Adsorption levels
Can know that by table 6 data along with the refinement of particle, sample is to aflatoxin AFB
1Adsorbance in rising trend and tend towards stability; Under the environment of pH6.0, the adsorption effect of 10000 order powdered rice hulls is best, and adsorbance reaches 2.5260 μ g/mg, and adsorption rate reaches 94.60%.
Sample is to the adsorption levels of Pb under the different pH values of table 7
Sample is to the adsorption levels of Cd under the different pH values of table 8
Can know that by table 7 and table 8 data along with the refinement of particle, sample is the adsorption levels of Pb, Cd and rises and tend towards stability; Under the environment of pH6.0, the adsorption effect of 10000 order powdered rice hulls is best, and the adsorption rate of heavy metal Pb, Cd is reached 98.2%, 93.24% respectively.
In sum, embodiment 2 powdered rice hulls finished products (10000 order) are to pernicious gas (NH
3), toxin (aflatoxin AFB
1) and heavy metal (Pb, Cd) have higher adsorption levels, be most preferred embodiment.
Embodiment 3
Take by weighing embodiment 2 made powdered rice hulls finished product 2 kg; The child care pig complete feed that Shanghai Xinnong Feed Co., Ltd produces (sucking pig is precious) 1000kg is (but when Feed Manufacturing is prepared; Add 2 kg zinc oxide component less; And alternative with powdered rice hulls finished product 2 kg that take by weighing, the composition and the consumption of all the other feed ingredients are constant); Preparation steps: at first said all the other feed ingredients are crushed to granularity 30 orders with pulverizer; Add powdered rice hulls finished product 2 kg that take by weighing again; Above-mentioned whole components are inserted mixer mixed 5 minutes; Pack with woven bag then, be stored in drying, ventilation, shady and cool place after sealing, make the pig starter feed finished product.
Embodiment 4
Take by weighing embodiment 2 made powdered rice hulls finished product 3 kg; The child care pig complete feed that Shanghai Xinnong Feed Co., Ltd produces (sucking pig is precious) 1000kg is (but when Feed Manufacturing is prepared; Substitute script with powdered rice hulls finished product 3 kg that take by weighing and be added on 3 kg zinc oxide component in the said feed, the composition and the consumption of all the other feed ingredients are constant); Preparation steps: at first said all the other feed ingredients are crushed to granularity 40 orders with pulverizer; Add powdered rice hulls finished product 3 kg that take by weighing again; Above-mentioned whole components are inserted mixer mixed 5 minutes; Pack with woven bag then, be stored in drying, ventilation, shady and cool place after sealing, the pig starter feed finished product that makes.
Below by check experiment beneficial effect of the present invention is described:
Test is arranged concretely as follows:
(1) experimental animal
Selecting body weight for use is 9 kg (± 0.1 kg) length * big two-way cross meat piglet.
(2) date of test and place
On November 5,2011 24 days to 2011 October in is pig farm, new agricultural Jiading in Shanghai.
(3) experimental design and daily ration
The single-factor design is adopted in this test, and 90 above-mentioned length * big two-way cross meat piglet is divided into three at random
Individual processed group, two test group (test group 1 and test group 2), a control group is established 3 repetitions for every group, and each repeats 10 pigs; The test group 1 embodiment 3 made pig starter feed finished products of feeding, the test group 2 embodiment 4 made pig starter feed finished products of feeding, the child care pig complete feed that control group fed Shanghai Xinnong Feed Co., Ltd produces (sucking pig is precious) was fed 12 days altogether.
(4) feeding and management
According to the normal daily feedings and managements such as water, dosing, epidemic prevention that feed intake, add in this pig farm.
(5) testing index
Measure daily gain, material anharmonic ratio, average daily feed intake and diarrhea rate, result of the test is referring to table 9.
Table 9
Can know by table 9 data, substitute the zinc oxide component that accounts for pig starter feed 0.2% and 0.3% by weight percentage, all can improve the daily gain and average daily feed intake of piglet with the made powdered rice hulls of the inventive method; The material anharmonic ratio slightly increases; Diarrhea rate reduces, and survival rate is high, and the comprehensive feeding effect of piglet improves.
Each raw material is the commercial goods in the foregoing description, and said each test method is this area conventional method, and related each production equipment is the conventional production equipment of field of fodder.
Above-described only is preferred implementation of the present invention, the invention is not restricted to above embodiment.Be appreciated that other improvement and variation that those skilled in the art directly derive or associate under the prerequisite that does not break away from spirit of the present invention and design, all should think to be included within protection scope of the present invention.
Claims (2)
1. method that substitutes zinc oxide component in the pig starter feed with powdered rice hulls; It is characterized in that: with handling the alternative by weight percentage zinc oxide component that accounts for said pig starter feed 0.2～0.3% of gained powdered rice hulls finished product through mechanical activation and selection by winnowing removal of impurities; Said mechanical activation is pulverized rice husk for adopting three-dimensional mill; The pulverizing time is 2～5 minutes; Said selection by winnowing removal of impurities is treated to adopts winnowing machine that the powdered rice hulls of handling through said mechanical activation is carried out the removal of impurities processing, and said powdered rice hulls finished product granularity is 1000～10000 orders; All the other components in said powdered rice hulls finished product and the said pig starter feed are mixed, make the pig starter feed finished product.
2. according to the said method with zinc oxide component in the alternative pig starter feed of powdered rice hulls of claim 1, it is characterized in that: all the other the component grinding particle sizes in the said pig starter feed are 30～40 orders.
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| CN103392915A (en) * | 2013-07-11 | 2013-11-20 | 金寨县古碑獭兔养殖专业合作社 | Organic feed |
| CN104304678A (en) * | 2014-10-27 | 2015-01-28 | 汉川市缘丰米业有限责任公司 | Methods for preparing fodder medium powder and fodder adsorbent by using rice husk |
| CN109619267A (en) * | 2017-10-09 | 2019-04-16 | 北京大北农科技集团股份有限公司 | A kind of feeding mold toxin sorbent and the preparation method and application thereof |
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