CN104429993A - Manufacturing method of pig fermentation bed - Google Patents
Manufacturing method of pig fermentation bed Download PDFInfo
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- CN104429993A CN104429993A CN201410631805.6A CN201410631805A CN104429993A CN 104429993 A CN104429993 A CN 104429993A CN 201410631805 A CN201410631805 A CN 201410631805A CN 104429993 A CN104429993 A CN 104429993A
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Classifications
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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
- A01K1/00—Housing animals; Equipment therefor
- A01K1/015—Floor coverings, e.g. bedding-down sheets ; Stable floors
- A01K1/0152—Litter
- A01K1/0154—Litter comprising inorganic material
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a manufacturing method of a fermentation bed. The manufacturing method comprises the following steps that nutrition materials and fermentation bed bacteria are evenly mixed by adding water, mixed materials are obtained, and the water content of the mixed materials is 25%-35%; the mixed materials are stacked, the periphery of the mixed materials is tightly covered by plastic cloth, and anaerobic fermentation is carried out; the mixed materials are kept at the room temperature of 20-25 DEG C for 2-3 days in summer and 5-7 days in winter, and if raw materials obtained after fermentation give out sour and sweet distiller yeast taste, fermentation is successful, then the raw materials, fermentation bed main materials and coarse salt are evenly mixed and stirred, water is added during stirring, and water content is maintained at 50%-60%; the materials are evenly paved in a breeding house, the thickness is 30 cm-55 cm, saw dust with the thickness of 3 cm-7 cm is arranged on the uppermost portion in a covering mode, and 2-3-day standing is carried out; and then non-fermentation fermentation bed main materials are taken for covering with the thickness of 8 cm-12 cm, and then after waiting for 24 hours, pigs can enter. According to the manufacturing method, fermentation is complete and even, and the phenomena of layer easy hardening, partial microorganism anoxia and bed dying cannot happen to the fermentation bed.
Description
Technical field
The present invention relates to pig cultural technique field, particularly the preparation method of a boar fermentation bed.
Background technology
Fermentation bed to raise pig method is different from general tradition and raises pigs, and pig manure, urine can be retained in pig house for a long time, outwards do not discharge, do not trickle towards periphery, whole fattening period does not need to remove ight soil, can take disposable removing ight soil after swinery is delivered for sale, do the growth that can not affect pig like this.Because with the addition of microorganism fungus kind in the feed and bedding and padding of pig, be conducive to decomposition and the conversion of protein in feed like this, reduce the stink of ight soil; Simultaneously in pad material fermentation bed, bedding and padding, fecaluria, residual feed are microorganism nutriments endlessly, are constantly decomposed, so can not see the scene of the smelly roars of laughter roars of laughter of soiled litter in bed.In whole fermentation bed, pig and bedding and padding, Pig dung and urine, residual feed, microorganisms etc. form one " ecological chain ", fermentation bed resembles an Application of Artificial Intelligence, it is always in ceaselessly continuous productive process, bedding and padding, Pig dung and urine, the organic matters such as residual feed pass through fermentation bed bacterial classification this " maincenter " at conversion and cycle, microorganism is at " eating " bedding and padding, Pig dung and urine, residual feed, pig (comprises various hypha,hyphae in " eating " microorganism, bacterium protein, the metabolite of functional microorganism, trace element that fermentation decomposes out etc.), the noresidue of whole pig house no waste mine, produce without soiled litter, and temperature can reach 60 ~ 70 degree during the fermentation of fermentation bed inside center, the worm's ovum in ight soil and germ can be killed, sanitation and hygiene, fly mosquito is made to lose basis for the survival, so very health is clean in fermentation bed type pig house, be difficult to see fly, with fresh air, be as good as stink.
In a word, fermentation bed to raise pig proposes new requirement from a brand-new angle to aspects such as pig house construction, feeding and management, Biosecurity system construction, Ration Compound, control and prevention of diseases, good condition of culture to be provided for useful fermentative microorganism on the one hand, make the excreta of its pig of dissolving rapidly; Also to ensure as pig provides good living environment on the other hand, to meet the needs of Various Seasonal, different physiological stage pig, reach the object increasing culture benefit.But existing fermentation bed is not sent out due to preparation method, fermentation bed easily hardens, and bottom anoxic microbial, fermentation bed easily becomes " dead bed ".
Summary of the invention
For above-mentioned the deficiencies in the prior art, the invention provides the preparation method of a boar fermentation bed, the method manufacture craft is simple, and not easily occurs " dead bed " phenomenon.
Technical scheme of the present invention is achieved in that
The preparation method of one boar fermentation bed, comprises the following steps:
1) added water with fermentation bed bacterial classification by nutrition material and mix, obtain compound, the water content of compound is 25 ~ 35%;
2) compound that step 1 is stirred is beaten heap, surrounding Polypropylence Sheet covers tightly and carries out anaerobic fermentation; Room temperature keeps 20 DEG C ~ 25 DEG C, 2 ~ 3 days summers, winter 5-7 days, the raw material fermented sends sour-sweet distiller's yeast fragrance and namely ferments successfully;
3) by step 2 gained material and fermentation bed major ingredient, crude salt mixing and stirring, add water in whipping process, water content remains on 50-60%; Uniform spreading is in colony house, and thickness is 30 ~ 55cm, covers 3 ~ 7 cm thicks topmost, place 2 ~ 3 days with dry sawdust;
4) getting unfermentable fermentation bed major ingredient again, to cover 8 ~ 12cm thick, can enter pig after then waiting for 24 hours;
Described nutrition material is any one or a few of grouts, wheat bran and corn flour;
Described fermentation bed major ingredient be in sawdust, peanut shell, rice chaff and stalk meal any one or a few.
Wherein, preferably, the consumption of described nutrition material and described fermentation bed bacterial classification is with the total volume of fermentation bed major ingredient used in step 3 for criterion calculation, and described nutrition material is 2.5 ~ 3.5kg/m
3, described fermentation bed bacterial classification is 20 ~ 30g/m
3.
Wherein, preferably, the weight ratio of described crude salt and described fermentation bed bacterial classification is 1 ~ 2:1.
Wherein, preferably, be also added with detonating agent in described step 1, the consumption of described detonating agent for criterion calculation, is 30 ~ 50g/m3 with the total volume of fermentation bed major ingredient used in step 2.
Wherein, preferably, described detonating agent is brown sugar or molasses.The energy of bedding and padding mixture can be improved after this type organic adds, make beneficial microbe increase sharply to a huge population quantity in the short period of time, so be commonly called as again " detonating agent ".
Wherein, preferably, also comprise the step of mending bacterium, be specially and fermentation bed bacterial classification is doubly diluted sprinkling by 1:1000, turn over pig bed 20cm and deeply spray after described fermentation bed makes, it is weekly for spraying frequency.
Beneficial effect of the present invention:
1. method of the present invention is first by nutrition material and the mixed culture fermentation of fermentation bed bacterial classification, again with other solid accumulation issuance of materials, fermentation relatively thoroughly evenly, there will not be that fermentation bed easily hardens, the phenomenon of part anoxic microbial and fermentation bed " dead bed ", and the method is simple to operate, applicability is strong.
2. environment is superior, the incidence of disease declines, reduce medication: fermentation bed environment is superior, " cool in summer and warm in winter ", the winter warms up, and is the decomposition because the mixture of bedding and padding, Pig dung and urine and residual feed ferments rapidly under fermentation bed bacterial classification manure fermentation agent effect, produce heat, bottom temp can reach 40 ~ 50 degree, and centre even can reach 60 ~ 70 degree, and skin temperature long term maintenance is at 25 ~ 30 degree.This environment can avoid pig flu sick winter.Xia Liang, uncovering plastic foil around summer is exactly mat shelter, and nice and cool not only also relevant with humidity with temperature, and the temperature of fermentation bed is not unlimited rising, but also can manual control.Assuming that when temperature in fermentation bed be elevated to be close to or higher than indoor or outdoors temperature time, hot-air rises, and cold air enters from surrounding, produces convection current, and temperature has just lowered rapidly, but also produces nice and cool sensation.With hour circle internal cause without fecaluria rubbish, and seem dry and comfortable, can not produce and damp and hotly vexedly close hard to bear sensation.Pig dung and urine can be avoided summer not only how not only wet but also smelly, affect the generation of respiratory disease and disease of digestive tract.The pig of living in fermentation bed is the most comfortable throughout the year, and pig is in freely carefree living environment, and the ability of resisting various epidemic disease strengthens, and veterinary drug, vaccine usage quantity decline.
3. save labor; increase the benefit: common pig house is removed fecaluria and occupied a large amount of labours; fermentation bed sluggard pig raising method eliminates the cleaning of pigsty; groundwork adds feed exactly; in pig house circle, install self feeder, automatic drinking bowl again, saving of labor saves power, and a people just can raise thousands of first-born pig; raise labour efficiency and can reach more than 60%, be conducive to the scale of feeding live pig, batch production development.
4. save water power coal, feed, reduce feeding cost: a large amount of water of conventional raising need rinses Pig dung and urine, and fermentation bed sluggard pig raising method exempts wash water, as long as drink water, so conserve water 90%.The environment of " cool in summer and warm in winter " saves a large amount of electric coal.In fermentation bed, the mixture of bedding and padding, Pig dung and urine and residual feed is after fermentation bed bacterial classification manure fermentation agent fermentation, decompose or a lot of benefit materials of degrading out, as the actinomycetes mycelia, trace element, protein etc. that grow, and wood fibre in sawdust and half fiber also can be degraded and change into the carbohydrate of easily fermentation, these all also play good facilitation to the growth of pig.Pig is edible by turning over arch, and provide certain nutrition to pig, thus decrease the supply of concentrated feed, show according to preliminary test, can save concentrated feed 20%, average daily gain is higher than pig one or two hectogram without fermentation bed.
5. fermentation bed to raise pig has looked after the physiology of pig and the principle of psychological welfare: this is one of fermentation bed major contribution in pig industry: the needs namely having looked after the psychology physiological of pig, return the nature of pig, this is up-to-date cultural technique pattern, returns animal nature as far as possible.
Embodiment
Be clearly and completely described the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
In the following embodiments, fermentation bed bacterial classification can be Japanese Lip river east ferment A-90 (Japanese Luo Dong changes into society of industrial strain trade union and produces), ecological precious (production of Lv Kangao bio tech ltd) or Gymboree fermentation bed leavening (production of Kang Yuan Science and Technology Ltd. of Beijing China); Or other pig fermentation bed bacterial classification.
Embodiment 1
This enforcement provides the preparation method of a boar fermentation bed, comprises the following steps:
Before fermentation bed makes, according to Various Seasonal, pig house size, and calculate the usage quantity of required nutrition material, fermentation bed bacterial classification, fermentation bed major ingredient and crude salt with required bedding and padding thickness gauge.
1) added water with fermentation bed bacterial classification by nutrition material and mix, obtain compound, the water content of compound is 30%;
2) compound that step 1 is stirred is beaten heap, surrounding Polypropylence Sheet covers tightly and carries out anaerobic fermentation; Room temperature keeps 20 DEG C ~ 25 DEG C, 2 ~ 3 days summers, and the raw material fermented sends sour-sweet distiller's yeast fragrance and namely ferments successfully;
3) by step 2 gained material and fermentation bed major ingredient, crude salt mixing and stirring, add water in whipping process, water content remains on 55%; Uniform spreading is in colony house, and thickness is 40cm, covers 5 cm thicks topmost, place 2 days with dry sawdust;
4) getting unfermentable fermentation bed major ingredient again, to cover 10cm thick, can enter pig after then waiting for 24 hours;
Nutrition material is grouts, wheat bran, and the weight ratio of the two is 1:2;
Fermentation bed major ingredient is the mixture of sawdust, peanut shell, rice chaff, maize straw meal, and its volume ratio is: 4:1:1:1.
Wherein, the consumption of nutrition material and fermentation bed bacterial classification is with the total volume of fermentation bed major ingredient used in step 3 for criterion calculation, and nutrition material is 30kg/m
3, fermentation bed bacterial classification is 25g/m
3.
Wherein, the weight ratio of crude salt and fermentation bed bacterial classification is 1:1.
Wherein, also comprise the step of mending bacterium after fermentation bed makes, mending bacterium is generally start after fermentation bed uses one month, and fermentation bed bacterial classification is doubly diluted sprinkling by 1:1000 from being specially by the present embodiment, turn over pig bed 20 centimetres while spray, it is weekly for spraying frequency.
In the use procedure of fermentation bed, as pig run in circle time, top layer bedding and padding are too dry, dust occur.Explanation bedding and padding are dry, and moisture is inadequate, should according to circumstances spray a little moisture, be convenient to pig normal growth.Because there is a large amount of microorganism species in the bedding and padding in whole fermentation bed, by the decomposing and fermenting of microorganism species, fermentation bed surface remains at the temperature of about 20 degree throughout the year, and the healthy growth for pig provides an excellent environment.
Embodiment 2
This enforcement provides the preparation method of a boar fermentation bed, comprises the following steps:
Before fermentation bed makes, according to Various Seasonal, pig house size, and calculate the usage quantity of required nutrition material, fermentation bed bacterial classification, fermentation bed major ingredient and crude salt with required bedding and padding thickness gauge.
1) added water with fermentation bed bacterial classification by nutrition material and mix, obtain compound, the water content of compound is 25%;
2) compound that step 1 is stirred is beaten heap, surrounding Polypropylence Sheet covers tightly and carries out anaerobic fermentation; Room temperature keeps 20 DEG C ~ 25 DEG C, 3 days summers, and the raw material fermented sends sour-sweet distiller's yeast fragrance and namely ferments successfully;
3) by step 2 gained material and fermentation bed major ingredient, crude salt mixing and stirring, add water in whipping process, water content remains on 50%; Uniform spreading is in colony house, and thickness is 30cm, covers 3 cm thicks topmost, place 2 ~ 3 days with dry sawdust;
4) getting unfermentable fermentation bed major ingredient again, to cover 8cm thick, can enter pig after then waiting for 24 hours;
Nutrition material is grouts, wheat bran and corn flour mixture, and weight ratio is 1:2:2;
Fermentation bed major ingredient is the mixture of sawdust, peanut shell and wheat stalk, and volume ratio is 2:1:1.
Wherein, the consumption of nutrition material and fermentation bed bacterial classification is with the total volume of fermentation bed major ingredient used in step 2 for criterion calculation, and nutrition material is 2.5kg/m
3, fermentation bed bacterial classification is 20g/m
3.
Wherein, the weight ratio of crude salt and fermentation bed bacterial classification is 2:1.
Wherein, also comprise the step of mending bacterium after fermentation bed makes, the step of this benefit bacterium uses from fermentation bed carries out after two months, and be specially and fermentation bed bacterial classification is doubly diluted sprinkling by 1:1000, turn over pig bed 20cm and deeply spray, it is weekly for spraying frequency.
Embodiment 3
This enforcement provides the preparation method of a boar fermentation bed, comprises the following steps:
Before fermentation bed makes, according to Various Seasonal, pig house size, and calculate the usage quantity of required nutrition material, fermentation bed bacterial classification, fermentation bed major ingredient and crude salt with required bedding and padding thickness gauge.
1) added water with fermentation bed bacterial classification by nutrition material and mix, obtain compound, the water content of compound is 35%;
2) compound that step 1 is stirred is beaten heap, surrounding Polypropylence Sheet covers tightly and carries out anaerobic fermentation; Room temperature keeps 20 DEG C ~ 25 DEG C, 7 days, and the raw material fermented sends sour-sweet distiller's yeast fragrance and namely ferments successfully;
3) by step 2 gained material and fermentation bed major ingredient, crude salt mixing and stirring, add water in whipping process, water content remains on 60%; Uniform spreading is in colony house, and thickness is 55cm, covers 3 cm thicks topmost, place 2 days with dry sawdust;
4) getting unfermentable fermentation bed major ingredient again, to cover 12cm thick, can enter pig after then waiting for 24 hours;
Nutrition material is corn flour;
Fermentation bed major ingredient is sawdust.
Wherein, the consumption of nutrition material and fermentation bed bacterial classification is with the total volume of fermentation bed major ingredient used in step 2 for criterion calculation, and nutrition material is 3.5kg/m
3, fermentation bed bacterial classification is 30g/m
3.
Wherein, the weight ratio of crude salt and fermentation bed bacterial classification is 1:1.
Wherein, step 1 is also added with brown sugar, and the consumption of brown sugar for criterion calculation, is 50g/m with the total volume of fermentation bed major ingredient used in step 2
3.
Wherein, preferably, also comprise the step of mending bacterium, be specially and fermentation bed bacterial classification is doubly diluted sprinkling by 1:1000, turn over pig bed 20 centimetres and spray after fermentation bed makes, it is weekly for spraying frequency.
Embodiment 4
This enforcement provides the preparation method of a boar fermentation bed, comprises the following steps:
Before fermentation bed makes, according to Various Seasonal, pig house size, and calculate the usage quantity of required nutrition material, fermentation bed bacterial classification, fermentation bed major ingredient and crude salt with required bedding and padding thickness gauge.
1) added water with fermentation bed bacterial classification by nutrition material and mix, water content is 30%;
2) raw material that step 1 is stirred is beaten heap, surrounding Polypropylence Sheet covers tightly anaerobic fermentation; Room temperature keeps 20 DEG C ~ 25 DEG C, 5 days winters, and the raw material fermented sends sour-sweet distiller's yeast fragrance and namely ferments successfully;
3) by step 2 gained material and fermentation bed major ingredient, crude salt mixing and stirring, add water in whipping process, water content remains on 58%; Uniform spreading is in colony house again, covers 4 cm thicks topmost, place 2 days with dry sawdust;
4) spread out by the material that step 3 ferments and pave, thickness is 45cm, then getting unfermentable fermentation bed major ingredient, to cover 10cm thick, can enter pig after then waiting for 24 hours;
Nutrition material is wheat bran;
Fermentation bed major ingredient is sawdust and rice chaff, and volume ratio is 3:1.
Wherein, the consumption of nutrition material and fermentation bed bacterial classification is with the total volume of fermentation bed major ingredient used in step 2 for criterion calculation, and nutrition material is 3.2kg/m
3, fermentation bed bacterial classification is 26g/m
3.
Wherein, the weight ratio of crude salt and fermentation bed bacterial classification is 1:1.
Wherein, step 1 is also added with molasses, and the consumption of molasses for criterion calculation, is 30g/m with the total volume of fermentation bed major ingredient used in step 2
3.
Wherein, preferably, also comprise the step of mending bacterium, be specially and fermentation bed bacterial classification is doubly diluted sprinkling by 1:1000, turn over pig bed 20cm and deeply spray after fermentation bed makes, it is weekly for spraying frequency.
The fermentation bed that above-described embodiment obtains also comprises the step of late maintaining, object mainly two aspects of fermentation bed maintenance, one is keep the normal microecological balance of fermentation bed, beneficial microbe colony is had the advantage status all the time, suppress the breeding of pathogenic microorganism and the generation of disease, for growing of pig provides healthy ecotope; Two is guarantee that the digest and decompose ability of fermentation bed to Pig dung and urine maintains higher level all the time, simultaneously for the growth of live pig provides a comfortable environment.Fermentation bed maintenance be mainly concerned with bedding and padding permeability management, moisture regulates, bedding and padding supplement, dredge soil pipe reason, mend multiple link such as bacterium, bedding and padding renewal.
Bedding and padding permeability manages: the long-term permeability keeping bedding and padding suitable, namely the oxygen content in bedding and padding maintains normal level all the time, be that fermentation bed keeps one of key factor of higher fecaluria capacity of decomposition, be also suppress sex pheromone breeding simultaneously, reduce the pathogenetic important means of disease.Usually bedding and padding often stir by easier mode exactly, stirring degree of depth child care pig is 15-20cm, bred pigs 25-35cm, usually bedding and padding can be turned over even in conjunction with thin excrement or moisturizing, bedding and padding will stir once by (50-60 days) thoroughly in addition at set intervals, and padding layer will be mixed up and down.
Application Example
Cement flooring and fermentation bed of the present invention two kinds of method for culturing pigs impacts on pig productivity see the following form.
Find out from upper table, the average daily gain of fermentation bed experimental group vegetative period of the present invention and the stage of fattening is higher than cement flooring control group, and feedstuff-meat ratio is lower than cement flooring control group.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. the preparation method of a boar fermentation bed, is characterized in that, comprise the following steps:
1) added water with fermentation bed bacterial classification by nutrition material and mix, obtain compound, the water content of compound is 25 ~ 35%;
2) compound that step 1 is stirred is beaten heap, surrounding Polypropylence Sheet covers tightly and carries out anaerobic fermentation; Room temperature remains on 20 DEG C ~ 25 DEG C, 2 ~ 3 days summers, winter 5-7 days, the raw material fermented sends sour-sweet distiller's yeast fragrance and namely ferments successfully;
3) by step 2 gained material and fermentation bed major ingredient, crude salt mixing and stirring, add water in whipping process, water content remains on 50-60%; Uniform spreading is in colony house, and thickness is 30 ~ 55cm, covers 3 ~ 7 cm thicks topmost, place 2 ~ 3 days with dry sawdust;
4) getting unfermentable fermentation bed major ingredient again, to cover 8 ~ 12cm thick, can enter pig after then waiting for 24 hours;
Described nutrition material is any one or a few of grouts, wheat bran and corn flour;
Described fermentation bed major ingredient be in sawdust, peanut shell, rice chaff and stalk meal any one or a few.
2. the preparation method of a boar fermentation bed according to claim 1, it is characterized in that, the consumption of described nutrition material and described fermentation bed bacterial classification is with the total volume of fermentation bed major ingredient used in step 3 for criterion calculation, and described nutrition material is 2.5 ~ 3.5kg/m
3, described fermentation bed bacterial classification is 20 ~ 30g/m
3.
3. the preparation method of a boar fermentation bed according to claim 2, is characterized in that, the weight ratio of described crude salt and described fermentation bed bacterial classification is 1 ~ 2:1.
4. the preparation method of a boar fermentation bed according to claim 1, is characterized in that, be also added with detonating agent in described step 1, and the consumption of described detonating agent for criterion calculation, is 30 ~ 50g/m with the total volume of fermentation bed major ingredient used in step 2
3.
5. the preparation method of a boar fermentation bed according to claim 4, is characterized in that, described detonating agent is brown sugar or molasses.
6. the preparation method of a boar fermentation bed according to claim 1, it is characterized in that, also comprise the step of mending bacterium after described fermentation bed makes, be specially and fermentation bed bacterial classification is doubly diluted sprinkling by 1:1000, turn over pig bed 20cm deeply while spray, it is weekly for spraying frequency.
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Cited By (5)
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JP2016052279A (en) * | 2014-09-03 | 2016-04-14 | ヤンマー株式会社 | Stall management method |
CN105724318A (en) * | 2016-03-16 | 2016-07-06 | 浙江省农业科学院 | Low-carbon nursery pig breeding method |
CN105794718A (en) * | 2016-03-16 | 2016-07-27 | 浙江省农业科学院 | Raising management method for improving sow reproductive performance |
CN108541660A (en) * | 2018-04-24 | 2018-09-18 | 上海动物园 | Veterinary method, animal raising device and its fermentation bed |
CN108575811A (en) * | 2018-04-20 | 2018-09-28 | 延安大学 | A kind of preparation method of Juncao fermentation bed |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2016052279A (en) * | 2014-09-03 | 2016-04-14 | ヤンマー株式会社 | Stall management method |
CN105724318A (en) * | 2016-03-16 | 2016-07-06 | 浙江省农业科学院 | Low-carbon nursery pig breeding method |
CN105794718A (en) * | 2016-03-16 | 2016-07-27 | 浙江省农业科学院 | Raising management method for improving sow reproductive performance |
CN108575811A (en) * | 2018-04-20 | 2018-09-28 | 延安大学 | A kind of preparation method of Juncao fermentation bed |
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