CN107251996A - A kind of rye grass and the preparation method of whole-plant corn mixed silage feed - Google Patents
A kind of rye grass and the preparation method of whole-plant corn mixed silage feed Download PDFInfo
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K30/00—Processes specially adapted for preservation of materials in order to produce animal feeding-stuffs
- A23K30/10—Processes specially adapted for preservation of materials in order to produce animal feeding-stuffs of green fodder
- A23K30/15—Processes specially adapted for preservation of materials in order to produce animal feeding-stuffs of green fodder using chemicals or microorganisms for ensilaging
- A23K30/18—Processes specially adapted for preservation of materials in order to produce animal feeding-stuffs of green fodder using chemicals or microorganisms for ensilaging using microorganisms or enzymes
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Abstract
The invention discloses a kind of rye grass and the preparation method of whole-plant corn mixed silage feed, belong to feed production technology field.The present invention is selected by 1) raw material, 2) ferments the two steps to realize the preparation of ensilage.Rye grass of the present invention and whole-plant corn mixed silage feed, dry matter content, coarse ash and acid detergent fiber content all decrease, and respectively 35.48~36.54%, 3.08~3.17%, 34.67~36.58%.The mixed silage feed of the present invention is soft tack-free for yellow green, with strong vinic acid taste, and nothing is gone mouldy, 305d 6875~6914kg of the output of milk, milk volume increase 10.6~11.3%, add the yield of milk, the palatability of feed is good, and the ensilage cost of making is low, remarkable in economical benefits.
Description
Technical field
The invention belongs to feed production technology field, and in particular to a kind of rye grass and whole-plant corn mixed silage feed
Preparation method.
Background technology
Ensilage be by moisture content for 65%~75% green forage after chopping, under conditions of airtight anoxia,
By the fermentation of anaerobism lactic acid bacteria, suppress the breeding of various miscellaneous bacterias, and a kind of palatability of obtained dark green succulence is good
Feed.Ensilage smell acid perfume, soft and succulency, palatability are good, nutritious, preserved beneficial to long-term, are that Livestock is excellent
One of good basal feed.Mainly there are following three kinds of classifications：General ensiling, hay silage and additive ensiling.Prior art is main
It is the ensilage by the way of additive ensiling, it is to add some additives in ensiling to influence the fermentation of ensiling to make
With.Such as add various soluble-carbohydrates, inoculating lactic acid bacterium, add enzyme preparation, lactobacillus-fermented can be promoted, rapid production
Raw substantial amounts of lactic acid, makes pH quickly reach requirement；Or add various acids, bacteriostatic agent etc. and can suppress spoilage organisms etc. and be unfavorable for ensiling
Microorganism growth, can so improve silage effect, expand the scope of ensiling raw material.
Corn silage has two kinds of corn straw silage and whole corn silage, compared with corn straw silage, whole-plant corn
Ensiling cutting occasion is early, soft texture, easily digestion, and digestibility improves 10% or so, especially content of starch height, can be worth height,
With higher nutritive value；And with sour fragrance, palatability is good.Rye grass is of high nutritive value, rich in protein, mineral matter and
Crude protein content is up to more than 25% in vitamin, its hay, and many matter of leaf are tender, and palatability is good.Rye grass ensiling, it is possible to resolve supply
Ask the season of appearance uneven and region imbalance problem, while can also solve to abound with rainy season phase should not modulate the tired of hay
Difficulty, and obtain and blueer or green cut corn quality more excellent ensilage.During the processing of whole-plant corn independent ensiling disposable input compared with
Greatly, cost is higher, such as by rye grass and whole-plant corn mixed silage, can be of high nutritive value, that palatability is good, cost is low is mixed
Close ensilage.
The content of the invention
It is an object of the invention to provide a kind of cost it is low, be of high nutritive value, the rye grass that palatability is good and whole-plant corn
The preparation method of mixed silage feed.
In order to achieve the above object, the present invention is achieved using following technical scheme.
A kind of rye grass and the preparation method of whole-plant corn mixed silage feed, comprise the following steps：
1) raw material is selected：The whole-plant corn for shifting to an earlier date 5~8d in dough stage is gathered in, it is flat with harvested new green rye
Paving is dried, and is then bundled into bundle, and it is 66.5%~69.5% to control its water content, and feeding is rubbed in crushing all-in-one therewith
Crushing is rubbed in progress, rubs into thread or sheet, and crushing length is 2.2~2.6cm；The harvesting height of the whole-plant corn is
15.5~19.5cm, the harvesting height of rye grass is slightly below 1~2cm of whole-plant corn, and the whole-plant corn gathers in preceding 43~46d and applied
With corn composite fertilizer, the amount of application of composite fertilizer is 14.3~19.3kg/ mus, and the weight ratio of the whole-plant corn and rye grass is
3.5~5:1.5~3；
2) ferment：By step 1) in rye grass with whole-plant corn segment while, should also add grinding particle size for 6~
8mm steam-flaked corn 15%~20%, lactic acid bacteria silage fermentation agent 1.4%~1.7%, formic acid 0.33%~0.44%,
Propionic acid 0.33%~0.44%, surplus are beet sugar manufacture industrial wood waste；Beet sugar manufacture industrial wood waste is crushed, silk is rubbed, squeezes
Pressure water, is then mixed with 42wt% lactic acid bacteria silage fermentation agent 4.2%~5.4%, and by compound bundling, spreading for cooling 44~
65min, is then carried out taking out after wrapping up in bag sealing, 20~25d of fermentation with pre-stretching winding film, releases winding film, add 58wt%
Lactic acid bacteria silage fermentation agent 4.2%~5.4% and unclassified stores are mixed evenly, overlay film, using cellar for storing things storage fermentation, by material by
Layer is inserted in silage silo, per 23~26cm of thickness, and raw material is successively compacted, and density reaches 620~640g/L, control fermentation temperature
31~34 DEG C of degree, fermentation time is 35~50d；Described lactic acid bacteria silage fermentation agent is selected from the green limited public affairs of Gansu Province biotechnology in Shandong
Department, living bacteria count content >=10,000,000,000/g；The whole-plant corn, rye grass, the weight ratio of lactic acid bacteria silage fermentation agent are 3.5
~5:1.5~3：0.14~0.19.
Further, described corn composite fertilizer is made up of the raw material of following parts by weight：44~52 parts of rotted pig manure, polypeptide
27~37 parts of urea, 27~37 parts of potassium dihydrogen phosphate, 14~17 parts of basic zinc sulfate, 7~8 parts of plant ash, EM bacterium 3.5~6.5
Part, 3.3~6.3 parts of humic acid, 1.5~2.5 parts of ammonium molybdate, 1~2 part of boric acid.
It is made up of as preferred, described corn composite fertilizer the raw material of following parts by weight：48 parts of rotted pig manure, peptide urea
32 parts, 32 parts of potassium dihydrogen phosphate, 15.5 parts of basic zinc sulfate, 7.5 parts of plant ash, 5 parts of EM bacterium, 4.8 parts of humic acid, ammonium molybdate 2
Part, 1.2 parts of boric acid.
Preferably, the whole-plant corn, rye grass, the weight ratio of lactic acid bacteria silage fermentation agent are 4.5:2.5：0.17.
Described corn is with rye grass planting in same field, and the cultivated area of corn and rye grass is 3:1.8, and
While to being applied fertilizer before whole-plant corn harvesting, the 29%~34% of the weight of fertilizer fraction is used to rye grass.
Compared with prior art, advantageous effects of the invention：
1) whole-plant corn of the invention is gathered in advance, it is therefore intended that 5~8d can ensure what its Fodder making was best suitable in advance
Water content, applies corn composite fertilizer, its object is to increase the content of nitrate in ensilage, degraded portion before being gathered in corn
Divide nitrate, eliminate conversion of the nitrate to nitrite.Meanwhile, corn and rye grass planting are saved in same field
The administration of fertilizer, improves utilization rate of fertilizer, for prepare the raw material of ensilage gather in provide it is convenient, it is ensured that raw material
With very high nutritive value.
2) steam-flaked corn, urea, beet sugar manufacture industrial wood waste are added in ensiling raw material of the present invention for milk cow
The output of milk and farrowing rate improve a lot.Coordinate formic acid and propionic acid, significantly reduce the ratio of acetic acid/propionic acid in ensiling, drop
It is low not using fibre fractionation, improve Silage Quality, catalysis is played a part of in the raising to milk production of cow and farrowing rate.
3) rye grass of the present invention and whole-plant corn mixed silage feed, dry matter content, coarse ash and acidic cleaning are fine
Dimension hplc all decreases, respectively 35.48~36.54%, 3.08~3.17%, 34.67~
36.58%.The mixed silage feed of the present invention is soft tack-free for yellow green, with strong vinic acid taste, without mould
Become, 305d 6875~6914kg of the output of milk, milk volume increase 10.6~11.3% adds the yield of milk, the palatability of feed
Good, the ensilage cost of making is low, remarkable in economical benefits.
Embodiment
Below by specific embodiment, technical scheme is further illustrated.It should be appreciated that this hair
Bright embodiment is not limited to the following examples, and any formal accommodation and/or change made for the present invention all will
Fall into protection scope of the present invention.
Embodiment 1
A kind of rye grass and the preparation method of whole-plant corn mixed silage feed, comprise the following steps：
1) raw material is selected：The whole-plant corn for shifting to an earlier date 5d in dough stage is gathered in, tiled with harvested new green rye
Dry, be then bundled into bundle, it is 66.5% to control its water content, feeding is rubbed therewith carries out rubbing powder in crushing all-in-one
It is broken, thread or sheet is rubbed into, crushing length is 2.2cm；The harvesting height of the whole-plant corn is 15.5cm, the receipts of rye grass
Cut height and be slightly below whole-plant corn 1cm, 43d applies corn composite fertilizer before the whole-plant corn harvesting, and the amount of application of composite fertilizer is
14.3kg/ mus, the weight ratio of the whole-plant corn and rye grass is 3.5:1.5；Described corn composite fertilizer is by following parts by weight
Raw material composition：44 parts of rotted pig manure, 27 parts of peptide urea, 27 parts of potassium dihydrogen phosphate, 14 parts of basic zinc sulfate, 7 parts of plant ash,
3.5 parts of EM bacterium, 3.3 parts of humic acid, 1.5 parts of ammonium molybdate, 1 part of boric acid；Described corn with rye grass planting in same field,
The cultivated area of corn and rye grass is 3:1.8, and while being applied fertilizer before to whole-plant corn harvesting, the fertilizer is used to rye grass
Expect the 29% of weight fraction；
2) ferment：By step 1) in rye grass with whole-plant corn segment while, it is 6mm's that should also add grinding particle size
Steam-flaked corn 15%, lactic acid bacteria silage fermentation agent 1.4%, urea 0.39%, formic acid 14.3%, propionic acid 15.1%, surplus
For beet sugar manufacture industrial wood waste；Beet sugar manufacture industrial wood waste is crushed, silk, extrusion drainage is rubbed, then the lactic acid with 42%
Bacterium silage fermentation agent 1.4% is mixed, and by compound bundling, spreading for cooling 44min then carries out wrapping up in Bao Mi with pre-stretching winding film
Taken out after envelope, fermentation 20d, release winding film, added 58wt% lactic acid bacteria silage fermentations agent 1.4% and unclassified stores is mixed
Uniformly, overlay film, using cellar for storing things storage fermentation, material is successively inserted in silage silo, per thickness 23cm, and raw material is successively compacted, it is close
Degree reaches 620g/L, controls 31 DEG C of fermentation temperature, fermentation time is 35d；It is green that described lactic acid bacteria silage fermentation agent is selected from Shandong
Gansu Province Bioisystech Co., Ltd, living bacteria count content >=10,000,000,000/g；The whole-plant corn, rye grass, lactic acid bacteria silage fermentation
The weight ratio of agent is 3.5:1.5：0.14.
Embodiment 2
A kind of rye grass and the preparation method of whole-plant corn mixed silage feed, comprise the following steps：
1) raw material is selected：The whole-plant corn for shifting to an earlier date 6d in dough stage is gathered in, tiled with harvested new green rye
Dry, be then bundled into bundle, it is 67.5% to control its water content, feeding is rubbed therewith carries out rubbing powder in crushing all-in-one
It is broken, thread or sheet is rubbed into, crushing length is 2.4cm；The harvesting height of the whole-plant corn is 17.5cm, the receipts of rye grass
Cut height and be slightly below whole-plant corn 2cm, 44d applies corn composite fertilizer before the whole-plant corn harvesting, and the amount of application of composite fertilizer is
15.7kg/ mus, the weight ratio of the whole-plant corn and rye grass is 4.5:2.5；Described corn composite fertilizer is by following parts by weight
Raw material composition：48 parts of rotted pig manure, 32 parts of peptide urea, 32 parts of potassium dihydrogen phosphate, 15.5 parts of basic zinc sulfate, plant ash
7.5 parts, 5 parts of EM bacterium, 4.8 parts of humic acid, 2 parts of ammonium molybdate, 1.2 parts of boric acid；Described corn is with rye grass planting in same field
In ground, the cultivated area of corn and rye grass is 3:1.8, and while being applied fertilizer before to whole-plant corn harvesting, make to rye grass
With the 31.5% of the weight of fertilizer fraction；
2) ferment：By step 1) in rye grass with whole-plant corn segment while, it is 7mm's that should also add grinding particle size
Steam-flaked corn 17%, lactic acid bacteria silage fermentation agent 1.6%, urea 0.74%, formic acid 16.5%, propionic acid 19.2%, surplus
For beet sugar manufacture industrial wood waste；Beet sugar manufacture industrial wood waste is crushed, silk, extrusion drainage is rubbed, then the lactic acid with 42%
Bacterium silage fermentation agent 1.6% is mixed, and by compound bundling, spreading for cooling 51min is then entered with Wrapsmart pre-stretching winding films
Row takes out after wrapping up in bag sealing, fermentation 23d, releases winding film, adds 58% lactic acid bacteria silage fermentation agent 1.6% and unclassified stores is mixed
Conjunction stirs, overlay film, using cellar for storing things storage fermentation, material is successively inserted in silage silo, per thickness 24cm, and raw material successively pressed
Real, density reaches 630g/L, controls 32 DEG C of fermentation temperature, fermentation time is 41d；Described lactic acid bacteria silage fermentation agent is selected from mountain
Dong Lv Gansu Province Bioisystech Co., Ltd, living bacteria count content >=10,000,000,000/g；The whole-plant corn, rye grass, lactic acid bacteria ensiling
The weight ratio of leavening is 4.5:2.5：0.17.
Embodiment 3
A kind of rye grass and the preparation method of whole-plant corn mixed silage feed, comprise the following steps：
1) raw material is selected：The whole-plant corn for shifting to an earlier date 8d in dough stage is gathered in, tiled with harvested new green rye
Dry, be then bundled into bundle, it is 69.5% to control its water content, feeding is rubbed therewith carries out rubbing powder in crushing all-in-one
It is broken, thread or sheet is rubbed into, crushing length is 2.6cm；The harvesting height of the whole-plant corn is 19.5cm, the receipts of rye grass
Cut height and be slightly below whole-plant corn 2cm, 46d applies corn composite fertilizer before the whole-plant corn harvesting, and the amount of application of composite fertilizer is
19.3kg/ mus, the weight ratio of the whole-plant corn and rye grass is 5:3；Described corn composite fertilizer by following parts by weight original
Material composition：52 parts of rotted pig manure, 37 parts of peptide urea, 37 parts of potassium dihydrogen phosphate, 17 parts of basic zinc sulfate, 8 parts of plant ash, EM bacterium
6.5 parts, 6.3 parts of humic acid, 2.5 parts of ammonium molybdate, 2 parts of boric acid；Described corn and rye grass planting are in same field, corn
Cultivated area with rye grass is 3:1.8, and while being applied fertilizer before to whole-plant corn harvesting, the fertilizer weight is used to rye grass
Measure the 34% of fraction；
2) ferment：By step 1) in rye grass with whole-plant corn segment while, it is 8mm's that should also add grinding particle size
Steam-flaked corn 20%, lactic acid bacteria silage fermentation agent 1.7%, urea 1.09%, formic acid 18.7%, propionic acid 23.2%, surplus
For beet sugar manufacture industrial wood waste；Beet sugar manufacture industrial wood waste is crushed, silk, extrusion drainage are rubbed, then with 42wt% breast
Sour bacterium silage fermentation agent 1.7% is mixed, and by compound bundling, spreading for cooling 65min then carries out wrapping up in Bao Mi with pre-stretching winding film
Envelope, fermentation is taken out after 25 days, releases winding film, adds 58wt% lactic acid bacteria silage fermentations agent 1.7% and unclassified stores mixing is stirred
Mix uniform, overlay film, using cellar for storing things storage fermentation, material successively inserted in silage silo, per thickness 26cm, and raw material is successively compacted,
Density reaches 640g/L, controls 34 DEG C of fermentation temperature, fermentation time is 50d；Described lactic acid bacteria silage fermentation agent is selected from Shandong
Lv Long Bioisystech Co., Ltd, living bacteria count content >=10,000,000,000/g；The whole-plant corn, rye grass, lactic acid bacteria ensiling hair
The weight ratio of ferment agent is 5:3：0.19.
One is done with reference to specific experiment example to the present invention to illustrate.
Experimental example 1：Embodiment 1~3 and comparative example nutritional ingredient contrast, each nutritional ingredient in percentage, such as the institute of table 1
Show：
Experimental example 2：The subjective appreciation of embodiment 1~3 and comparative example, as shown in table 2：
Experimental example 3：The milk crop of embodiment 1~3 and comparative example is compared：
Experimental method：Designed using single-factor random experiment, random selection test group and control group.Test period is 35d,
Carried out in certain cattle farm, preliminary trial period is 6d.
The milk cow 40 for selecting identical kind, parity close with the lactation moon, is randomly divided into test group and control group, every group 10
Head, is raised in same cowshed.Ensilage presses test requirements document, and every ox of test group feeds blue or green obtained by the embodiment of the present invention daily
Feed 16kg is store, every ox of control group feeds conventional ensiling 16kg daily.
Experimental result：The test ox output of milk is as shown in table 3 in experimental period：
Tested more than, rye grass of the present invention and whole-plant corn mixed silage feed, dry matter content, coarse ash with
And acid detergent fiber content all decreases, respectively 35.48~36.54%, 3.08~3.17%, 34.67~
36.58%.The mixed silage feed of the present invention is soft tack-free for yellow green, with strong vinic acid taste, without going mouldy, gives milk
6875~6914kg is measured, milk volume increase 10.6~11.3% adds the yield of milk, remarkable in economical benefits.
The present invention can be summarized with others without prejudice to the concrete form of the spirit or essential characteristics of the present invention.No matter from which
From the point of view of a bit, the embodiment above of the invention can only all be considered the description of the invention and can not limit the present invention, right
Claim indicates the scope of the present invention, therefore, any in the implication and scope suitable with claims of the present invention
Change, be all considered as being included within Claims scope.
Claims (5)
1. a kind of rye grass and the preparation method of whole-plant corn mixed silage feed, it is characterised in that comprise the following steps：
1) raw material is selected：The whole-plant corn for shifting to an earlier date 5~8d in dough stage is gathered in, with harvested new green rye tiled
Shine, be then bundled into bundle, it is 66.5%~69.5% to control its water content, feeding is rubbed therewith is carried out in crushing all-in-one
Crushing is rubbed, thread or sheet is rubbed into, crushing length is 2.2~2.6cm；The harvesting height of the whole-plant corn be 15.5~
19.5cm, the harvesting height of rye grass is slightly below 1~2cm of whole-plant corn, and the whole-plant corn gathers in preceding 43~46d and applies corn
Composite fertilizer, the amount of application of composite fertilizer is 14.3~19.3kg/ mus, and the weight ratio of the whole-plant corn and rye grass is 3.5~5:
1.5~3；
2) ferment：By step 1) in rye grass with whole-plant corn segment while, it is 6~8mm's that should also add grinding particle size
Steam-flaked corn 15%~20%, lactic acid bacteria silage fermentation agent 1.4%~1.7%, formic acid 0.33~0.44%, propionic acid 0.33
~0.44%, surplus is beet sugar manufacture industrial wood waste；Beet sugar manufacture industrial wood waste is crushed, silk, extrusion drainage is rubbed, then
Lactic acid bacteria silage fermentation agent 1.4%~1.7% with 42% is mixed, and by compound bundling, 44~65min of spreading for cooling is then used
Pre-stretching winding film is carried out wrapping up in bag sealing, and fermentation is taken out after 20~25 days, releases winding film, adds 58wt% lactic acid bacterias ensiling hair
Ferment agent 1.4%~1.7% and unclassified stores are mixed evenly, overlay film, using cellar for storing things storage fermentation, material is successively inserted into silage silo
In, per 23~26cm of thickness, and raw material is successively compacted, density reaches 620~640g/L, controls 31~34 DEG C of fermentation temperature,
Fermentation time is 35~50 days；Described lactic acid bacteria silage fermentation agent is selected from Shandong Lv Long Bioisystech Co., Ltd, effectively living
Bacterium number content >=10,000,000,000/g；The whole-plant corn, rye grass, the weight ratio of lactic acid bacteria silage fermentation agent are 3.5~5:1.5~
3：0.14~0.19.
2. a kind of rye grass according to claim 1 and the preparation method of whole corn silage feed, it is characterised in that institute
The corn composite fertilizer stated is made up of the raw material of following parts by weight：44~52 parts of rotted pig manure, 27~37 parts of peptide urea, di(2-ethylhexyl)phosphate
27~37 parts of hydrogen potassium, 14~17 parts of basic zinc sulfate, 7~8 parts of plant ash, 3.5~6.5 parts of EM bacterium, 3.3~6.3 parts of humic acid,
1.5~2.5 parts of ammonium molybdate, 1~2 part of boric acid.
3. a kind of rye grass according to claim 2 and the preparation method of whole corn silage feed, it is characterised in that institute
The corn composite fertilizer stated is made up of the raw material of following parts by weight：48 parts of rotted pig manure, 32 parts of peptide urea, potassium dihydrogen phosphate 32
Part, 15.5 parts of basic zinc sulfate, 7.5 parts of plant ash, 5 parts of EM bacterium, 4.8 parts of humic acid, 2 parts of ammonium molybdate, 1.2 parts of boric acid.
4. a kind of rye grass according to claim 1 and the preparation method of whole corn silage feed, it is characterised in that institute
It is 4.5 to state whole-plant corn, rye grass, the weight ratio of lactic acid bacteria silage fermentation agent:2.5：0.17.
5. a kind of rye grass according to claim 1 and the preparation method of whole corn silage feed, it is characterised in that institute
The corn stated is with rye grass planting in same field, and the cultivated area of corn and rye grass is 3:1.8, and to whole-plant corn
While fertilising before harvesting, the 29%~34% of the weight of fertilizer fraction is used to rye grass.
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| CN201710453501.9A CN107251996A (en) | 2017-06-15 | 2017-06-15 | A kind of rye grass and the preparation method of whole-plant corn mixed silage feed |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110200149A (en) * | 2019-05-21 | 2019-09-06 | 石家庄市农林科学研究院 | A kind of production method of whole corn silage feed |
| CN110558438A (en) * | 2019-10-24 | 2019-12-13 | 甘肃省农业科学院畜草与绿色农业研究所(甘肃省农业科学院农业质量标准与检测技术研究所) | Method for preparing silage mixed by ryegrass and whole corn for cattle and sheep |
| CN112890021A (en) * | 2021-02-25 | 2021-06-04 | 贵州金农富平生态农牧科技有限公司 | Silage processing technology |
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| CN103859154A (en) * | 2014-02-26 | 2014-06-18 | 铜仁职业技术学院 | Production method of silage |
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| CN103859154A (en) * | 2014-02-26 | 2014-06-18 | 铜仁职业技术学院 | Production method of silage |
| CN106172231A (en) * | 2016-08-17 | 2016-12-07 | 荆门华中农业开发有限公司 | A kind of Neng Fan cow home farm aquaculture model of the coordination of farming and animal husbandry |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110200149A (en) * | 2019-05-21 | 2019-09-06 | 石家庄市农林科学研究院 | A kind of production method of whole corn silage feed |
| CN110558438A (en) * | 2019-10-24 | 2019-12-13 | 甘肃省农业科学院畜草与绿色农业研究所(甘肃省农业科学院农业质量标准与检测技术研究所) | Method for preparing silage mixed by ryegrass and whole corn for cattle and sheep |
| CN112890021A (en) * | 2021-02-25 | 2021-06-04 | 贵州金农富平生态农牧科技有限公司 | Silage processing technology |
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