CN109198191A - A kind of preparation method and applications of hydroxy chloride calcium - Google Patents
A kind of preparation method and applications of hydroxy chloride calcium Download PDFInfo
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- CN109198191A CN109198191A CN201811280570.5A CN201811280570A CN109198191A CN 109198191 A CN109198191 A CN 109198191A CN 201811280570 A CN201811280570 A CN 201811280570A CN 109198191 A CN109198191 A CN 109198191A
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/20—Inorganic substances, e.g. oligoelements
- A23K20/24—Compounds of alkaline earth metals, e.g. magnesium
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K50/00—Feeding-stuffs specially adapted for particular animals
- A23K50/30—Feeding-stuffs specially adapted for particular animals for swines
Abstract
The invention discloses a kind of preparation methods of hydroxy chloride calcium that can be used for animal feed, comprising the following steps: is uniformly mixed alkaline calcium source with calcium chloride, water is added, heats under stiring, isothermal reaction, dried after reaction to get hydroxy chloride calcium is arrived.The present invention correspondingly provides a kind of hydroxy chloride calcium that above-mentioned preparation method is prepared in the application of field of animal feed, and the molecular formula of hydroxy chloride calcium is Ca (OH) Cl.The processing step that the present invention prepares hydroxy chloride calcium is simple, at low cost, high income, and without the exhaust gas such as ammonia or saliferous, ammonia-containing water discharge, more environmentally-friendly.
Description
Technical field
The invention belongs to animal feed additive field more particularly to a kind of preparation method and applications of calcium salt.
Background technique
Calcium (calcium) is the most abundant mineral element of biological in-vivo content, and enough calcium intakes are normal to maintenance animal
It is most important to reach high bone mass peak value for bone mineral content, bone density.In addition, calcium ion also participates in a variety of physiology function in organism
Can, such as blood clotting maintains heart, muscle, neural normal excitability, signal transduction and the permeability of film etc..
Calcium content in usual natural plant feed be not able to satisfy the demand of various animals, especially laying poultry,
Cow in milk and growth cub become apparent.Therefore, it should be noted that the supplement of calcium in animal feed.Add on the market applied to feed at present
The calcium source of agent is added to be broadly divided into inorganic calcium and organic calcium.
Common calcium mineral matter feed is inorganic calcium, there is agstone, conch meal etc..Agstone is also known as mountain flour, is
Natural whiting (CaCO3).Mountain flour, which encounters gastric acid, can produce carbon dioxide, easily cause hiccup gastric disorder causing nausea etc..Conch meal is various
Powdery or pelletized product made of shellfish shell (clam shell, oyster shell, clam shell, snail shell etc.) processed crushing, mostly in greyish white
Color, grey, taupe.Often adulterate the impurity such as sandstone and soil in conch meal, when use should be noted that inspection.In addition, if shellfish meat not
It eliminates, it is improper to store in addition, with the passing of time situations such as mouldy, rancid easily occurs in accumulation, this can be such that its feed value significantly reduces, and chooses
And to pay special attention to when application.And conch meal is influenced by the place of production, and the expense for transporting to interior ground is not low, it is crushed again in addition needing to clear up,
Compared to mountain flour, conch meal principal component is equally CaCO3Cost wants many on height.Although organic calcium bioavailability compares inorganic calcium
Height, but it is expensive, in field of fodder using less.
The bioavailability size of microelements of calcium is related to its existing morphology.Traditional inorganic microelement calcium
Bioavailability is generally lower, and most of is not special production in feed.Therefore, it is added using hydroxy chloride calcium as calcium source
Also there is very vast market prospect into animal feed.
Hydroxy chloride calcium does not use the reaction preparation of Traditional liquid phase method generally because can decompose in water.Currently, hydroxyl
The preparation method of calcium chloride (Ca (OH) Cl) usually uses the solid phase reaction of quick lime or white lime and ammonium chloride to be made.But it is existing
A large amount of ammonia can be generated by having in production technology, have certain influence to production environment, environmental protection pressure is also larger.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the shortcomings of to mention in background above technology and defect, one kind is provided
Environmental protection, nutritional ingredient destroy that small, bioavailability is high, the preparation method and applications of hydroxy chloride calcium at low cost.To solve
Above-mentioned technical problem, technical solution proposed by the present invention are as follows:
A kind of preparation method for the hydroxy chloride calcium can be used for animal feed, comprising the following steps: by alkaline calcium source and chlorine
Change calcium is uniformly mixed, and water is added, heats under stiring, isothermal reaction, dries (divide to get to hydroxy chloride calcium after reaction
Minor is Ca (OH) Cl).
In the present invention, alkaline calcium source and the equation that calcium chloride reacts are as follows:
CaO+CaCl2+H2O=2Ca (OH) Cl；
Ca(OH)2+CaCl2=2Ca (OH) Cl.
In above-mentioned preparation method, it is preferred that alkaline calcium source is calcium oxide and/or calcium hydroxide.
In above-mentioned preparation method, it is preferred that alkaline calcium source and the molar ratio of calcium chloride control as (1.01-1.20): 1 (more
Preferably (1.01-1.10): 1).Calcium oxide becomes calcium hydroxide after being dissolved in water, and in alkalinity, alkalinity is too weak or too strong all unfavorable
In generating product, experimental study shows that the molar ratio control of alkaline calcium source and calcium chloride is (1.01-1.20): 1 is best.
In above-mentioned preparation method, it is preferred that the amount that water is added accounts for the 10-50% of alkaline calcium source, calcium chloride and water gross mass.
Amount of water is too low, and most of raw material reaction rate under non-aqueous conditions is very slow；Amount of water is too high, becomes after being dissolved in water due to calcium oxide
At calcium hydroxide, the solubility of calcium hydroxide in water is smaller, influences the positive of reaction rate less, instead because of concentration problems
Make to react reverse progress.And facile hydrolysis generates calcium chloride and calcium hydroxide to hydroxy chloride calcium in water, water to be unfavorable for producing
The generation of object.So it is that 10%-50% is the most suitable that amount of water, which accounts for alkaline calcium source, calcium salt and water total mass fraction,.In addition, this
The reaction water that inventive method is added is less, prepares hydroxy chloride calcium for semidry method.Compared to traditional liquid phase reactor, half-dried legal system
The standby middle water for participating in reaction is less, and the reaction vessel needed under same yield is smaller, saves heating energy source.Meanwhile it being also not required to
Filter centrifugation etc. is wanted to operate, product will not be excluded with operation parts such as filter centrifugations with mother liquor, will not partially be sticked to filter
Partial loss is caused in cloth equipment.These can reduce production cost, better meet environmental requirement.
In above-mentioned preparation method, it is preferred that when isothermal reaction, the temperature for controlling reaction system is 50-105 DEG C.More preferably
, when isothermal reaction, the temperature for controlling reaction system is 80-105 DEG C.When isothermal reaction, the control reaction time is 0.5-2h.Temperature
Degree is too low, and the time is too short, and be easy to causeing reaction, not exclusively conversion rate of products is lower；Temperature is too high, and the time is too long, reaction conversion
Rate growth is unobvious, and can evaporate a part of water, and material exsiccation is agglomerating, is unfavorable for subsequent granulation etc..When suitable reaction
Between and the reaction time can guarantee fully reacting and have higher yield, reduce reaction time inadequate bring wastage of material and length
Time response bring energy consumption.
In above-mentioned preparation method, it is preferred that isothermal reaction carries out in rake type drier, and detailed process includes following step
It is rapid: alkaline calcium source and calcium chloride are added in rake type drier from the feed opening of rake type drier, unlatching is uniformly mixed,
Water is added, heats under stiring, isothermal reaction, dries blanking directly in rake type drier after reaction to get hydroxyl is arrived
Calcium chloride.It is furthermore preferred that rake type drier is vacuum rake dryer.
The working principle of rake type drier is heated by jacket steam, and air-introduced machine extraction moisture carrys out dried material.It is dry
When, be passed through vapour heating in the drying cylinder interlayer of rotation, dry material needed constantly to be stirred by raking pawl in cylinder, increase by
Heat area extracts moisture out from upper discharge hole conducive to moisture evaporation, by air-introduced machine.The core component of rake type vacuum dryer is
Laminated vacuum drying cylinder has activity raking pawl in cylinder.When dry, it is passed through vapour heating in the drying cylinder interlayer of rotation, needs to do
Dry material is constantly stirred by raking pawl in cylinder, increases heating surface area conducive to moisture evaporation.Air pressure is far below material water in cylinder
Divide air pressure when evaporation, and accelerate the evaporation of material moisture, institute's evaporation water is taken away by vacuum pump.Because drying cylinder temperature can
Accurate control, therefore rake type vacuum dryer is highly suitable for thermally sensitive paste, paste, graininess, powdery, fiber
Shape material is dried.And it can be used for dry to inflammable, explosive hazardous material (fluids).If recycling dress is added in pumping process
It sets, the material for needing to carry out organic matter volatilization recycling can also be dried.The dry material moisture of rake type vacuum dryer
< 5%.
The product wet feed undried after the reaction was completed that the present invention is prepared is easy viscous wall, does not allow at pureed or pulpous state
Easily wet feed is transferred on drying equipment and is dried, consersion unit is also difficult to clean, and wet feed is thermal sensitivity raw material, after dry
Bulk material is hardened, and hardly possible crushes.And rake type drier integrates reaction and drying, the wet feed for not needing to obtain after reacting turns
It moves on in drying equipment and is dried, save process, reduce material transfer bring clear work and material falls etc. and to ask
Topic, saves the equipment investment of reaction kettle, time saving and energy saving.In addition, rake type drier be it is intermittent continuous drying, when continuous production
Clear is not needed, the intermittent continuous output of product, production efficiency is fast, and yield is 99% or more.
Rake type drier includes antivacuum rake type drier and the rake type drier for installing vaccum-pumping equipment additional.In reaction rank
Section, the two is no difference, but in drying stage, vacuum rake dryer can open the device vacuumized and pump from button is vacuumized
Moisture accelerates rate of drying and blanking, and can reduce product moisture by adjusting vacuum degree and drying time.
In above-mentioned preparation method, it is preferred that rake type drier is lateral exit.The rake type drier that general device producer sells
Bad to see situation in equipment for lower end centre exit, also the bad tools such as rake of filling in if necessary carry out buildup dead angle
Manual cleaning.Discharge port can see the situation in equipment in rake type drier side, can use rake etc. if necessary
Tool cleans up material from buildup dead angle.
In above-mentioned preparation method, it is preferred that carry out dry method whole grain with dry pelletizing machine after hydroxy chloride calcium is dry and be sieved to obtain
8-100 mesh grain products, the biggish screenings powder of mesh number returns to dry pelletizing machine and synthesis wet feed is again dry with rake type drier
It is dry do whole granulation sieving with dry complete machine and obtain 8-100 mesh grain products.Rake type drier discharge port can be with dry pelletizing machine
Feed inlet docking, dry pelletizing machine are pelletized.The disposable yield of dry pelletizing machine granulation is greater than 85%, product moisture < 5%.
Compared to poor fluidity, easily the particle powder blended product being layered, the product for the different meshes pelletized can
To meet the different demands of client, the higher fine grained of mesh number is used as feed for piglet instead of milk, aquatic products material, big pig feed is generally adopted
With the lesser coarse granule of mesh number.
As a general technical idea, the present invention correspondingly provides a kind of hydroxyl that above-mentioned preparation method is prepared
For calcium chloride in the application of field of animal feed, the molecular formula of hydroxy chloride calcium is Ca (OH) Cl.
In above-mentioned application, it is preferred that when hydroxy chloride calcium is used for pannage, additive amount is to add in feed per ton
1.0-12.0kg hydroxy chloride calcium；When hydroxy chloride calcium is used for poultry feed, additive amount is to add in feed per ton
1.0-20.0kg hydroxy chloride calcium；When hydroxy chloride calcium is used for ruminant animals feed, additive amount is full mixing day per ton
0.1-2.0kg hydroxy chloride calcium is added in grain.
Compared with the prior art, the advantages of the present invention are as follows:
1, the present invention prepare hydroxy chloride calcium processing step is simple, at low cost, high income, and without exhaust gas such as ammonias or
Saliferous, ammonia-containing water discharge, it is more environmentally-friendly.
2, the hydroxy chloride calcium particle that preparation process of the present invention obtains uniformly, good dispersion, good fluidity, be easily dried,
Without the crystallization water.
3, the thermal stability for the hydroxy chloride calcium that the present invention is prepared is good (up to 250 DEG C), can bear feed processing system
Higher temperature when grain.
4, calcium concentration is relatively higher (theoretical value is up to 43%) in hydroxy chloride calcium Ca (OH) Cl that the present invention is prepared,
Than the 32-39% high of mountain flour, opposite additive amount is few (additive amount equally in terms of calcium constituent), reserves addition for Feeding Prescription Design
Leeway (same level of calcium content can add more other functional products).
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the XRD diagram of hydroxy chloride calcium obtained in embodiment 1.
Specific embodiment
To facilitate the understanding of the present invention, the present invention is made below in conjunction with Figure of description and preferred embodiment more complete
Face meticulously describes, but the protection scope of the present invention is not limited to the following specific embodiments.
Unless otherwise defined, all technical terms used hereinafter and the normally understood meaning of those skilled in the art
It is identical.Technical term used herein is intended merely to the purpose of description specific embodiment, is not intended to the limitation present invention
Protection scope.
Unless otherwise specified, various raw material, reagent, the instrument and equipment etc. used in the present invention can pass through city
Field is commercially available or can be prepared by existing method.
Embodiment 1:
A kind of preparation method of hydroxy chloride calcium, comprising the following steps:
A batch feeds intake: the 85.5kg calcium hydroxide that purity is 98% is added to 113.3kg calcium chloride from feed opening
1m3In rake type drier, opens and stir and open steam heating, after mixing addition 21kg water, 105 DEG C of isothermal reaction 0.5h,
Air-introduced machine is opened after reaction and continues 105 DEG C of dry blankings, be crushed 40 meshes, is obtained hydroxy chloride calcium Ca (OH) Cl
173kg。
The target product hydroxy chloride calcium that the present embodiment obtains is through detecting, and wherein chloride ion content is 37.6%, calcium content
It is 42.6%, hydroxyl content 18.0%, volatile substances content is 1.0% at 105 DEG C, and the purity of product is
98.3%, yield 92.1%.The testing result is consistent with hydroxy chloride calcium molecular formula Ca (OH) Cl.It is detected through XRD, product
Product map is consistent with standard diagram in XRD spectrum (referring to Fig. 1).
In the present embodiment, the content atomic absorption spectroscopy determination of calcium, the content of chloride ion in hydroxy chloride calcium
With silver nitrate titration method, hydroxyl is measured with acid base titration, and free water and other volatile substances are low temperature at 103 DEG C ± 2 DEG C
(product that the present embodiment obtains is not volatile at 105 DEG C, and product sampling is dried to perseverance at 105 DEG C for measurement that drying to constant weight
The weight of reduction is defaulted as free water again).
Embodiment 2:
A kind of preparation method of hydroxy chloride calcium, comprising the following steps:
A batch feeds intake: the 160kg calcium hydroxide that purity is 98% is added to 226.5kg calcium chloride from feed opening
2m3In vacuum rake dryer, opens and stir and open steam heating, 152kg water, 80 DEG C of isothermal reactions are added after mixing
0.5h opens vaccum-pumping equipment after reaction, and dry blanking is laggard under the conditions of it is -0.1MPa that 80 DEG C -110 DEG C, vacuum, which are pressed,
Enter to do whole granulator to be sieved to obtain 100 mesh grain products, the biggish screenings powder of mesh number adds water again after returning to dry pelletizing machine
With rake type drier it is dry carry out doing whole pelletize with dry complete machine sieve with 100 mesh sieve to obtain product hydroxy chloride calcium Ca (OH) Cl
361kg。
The target product hydroxy chloride calcium that the present embodiment obtains is through detecting, and wherein chloride ion content is 37.1%, calcium content
It is 41.8%, hydroxyl content 17.7%, volatile substances content is 1.6% at 105 DEG C, and the purity of product is
97.7%, yield 95.4%.The testing result is consistent with hydroxy chloride calcium molecular formula Ca (OH) Cl.
In the present embodiment, the related assays method of hydroxy chloride calcium is the same as embodiment 1.
Embodiment 3:
A kind of preparation method of hydroxy chloride calcium, comprising the following steps:
More batches feed intake: the 116.6kg calcium oxide that purity is 98% is added to 226.5kg calcium chloride from feed opening
2m3In vacuum rake dryer, opens and stir and open steam heating, 343kg water, 50 DEG C of isothermal reactions are added after mixing
2h opens vaccum-pumping equipment after reaction, enters after dry blanking under the conditions of it is -0.1MPa that 80 DEG C -110 DEG C, vacuum, which are pressed,
It does whole granulator to be sieved to obtain 8 mesh grain products, the biggish screenings powder of mesh number closes after returning to dry pelletizing machine with next batch
At wet feed again with rake type drier it is dry carry out doing whole 8 meshes of pelletizing with dry complete machine obtain product hydroxy chloride calcium.
The target product hydroxy chloride calcium that the present embodiment obtains is through detecting, and wherein chloride ion content is 36.0%, calcium content
It is 40.6%, hydroxyl content 17.2%, volatile substances content is 0.8% at 105 DEG C, and the purity of product is
98.3%, 10 batches are collected into product 3.45t, yield 99.6%.The testing result and hydroxy chloride calcium molecular formula Ca (OH)
Cl is consistent.
In the present embodiment, the related assays method of hydroxy chloride calcium is the same as embodiment 1.
It by product obtained in embodiment 3 with 25kg/ packet, is packed using MULTILAYER COMPOSITE film package bag, wherein PVC inner bag
Tying, waterproof and dampproof pearl film outer bag press strip seam packet.It needs, is stacked on Forklift plate, each frame plate stacks 5 according to practical storage
Layer product, 2 frame plates overlay same upright position, totally 10 layers of product.7 days, 14 days, 1 month, 2 months, 3 months,
One product of contracting for fixed output quotas of lowest level are extracted after 6 months respectively and cross 8 mesh spin vibration sieves, do not find that there are unsifted caking materials on sieve.
Embodiment 4:
A kind of preparation method of hydroxy chloride calcium, comprising the following steps:
A batch feeds intake: the 78kg calcium hydroxide that purity is 98% is added to 1m from feed opening with 113kg calcium chloride3Very
It in empty rake type drier, opens and stirs and open steam heating, 110kg water, 70 DEG C of isothermal reaction 2h, reaction are added after mixing
After open vaccum-pumping equipment, 80 DEG C -110 DEG C, vacuum pressure be -0.1MPa under the conditions of dry blanking after enter and do whole granulation
Machine is sieved to obtain 40 mesh grain products, and the biggish screenings powder of mesh number adds water to use rake type drier again after returning to dry pelletizing machine
It is dry carry out doing whole 40 meshes of pelletizing with dry complete machine obtain product hydroxy chloride calcium Ca (OH) Cl 174kg.
The target product hydroxy chloride calcium that the present embodiment obtains is through detecting, and wherein chloride ion content is 37.7%, calcium content
It is 42.6%, hydroxyl content 18.0%, volatile substances content is 0.8% at 105 DEG C, and the purity of product is
98.3%, yield 99.5%.The testing result is consistent with hydroxy chloride calcium molecular formula Ca (OH) Cl.It is detected through XRD, product
Product map is consistent with standard diagram in XRD spectrum.
In the present embodiment, the related assays method of hydroxy chloride calcium is the same as embodiment 1.
Application Example 1:
The hydroxy chloride calcium being prepared in embodiment 1 is applied to the feeding experiment of broiler chicken.
The 1 age in days health love for selecting 360 plumages to hatch from same hatchery pulls out increasingly Broiler chicks.Broiler chicks are placed in the feeding of broiler chicken cage
It supports, whole process is freely eaten and free water, and according to routine immunization program immunity.It is randomly divided into 3 groups, every group of 6 repetitions, often
A 20 plumage of repetition.Wherein, control group adds 15kg mountain flour (Ca content 37.0%)/t mixed feed, test 1 in basal diet
Group adds 8kg hydroxy chloride calcium (Ca content 42.5%)/(hydroxy chloride calcium is from implementation for t mixed feed in basal diet
Example 1, similarly hereinafter), it tests 2 groups and adds 10kg hydroxy chloride calcium (Ca content 42.5%)/t mixed feed in basal diet.Each group
Basal diet is consistent, and calcium monohydrogen phosphate additive amount is 17kg/t mixed feed, does not add other calcium sources.Test period totally 42 days.
Testing index, growth performance: 1 age and 42 ages all chickens claim quality, count feed intake, calculate feedstuff-meat ratio.As a result such as
Shown in the following table 1.
Table 1: influence of the hydroxy chloride calcium to meat chicken growth performance
As can be seen from Table 1: the mountain flour calcium content detected value that this test uses is 37%, hydroxy chloride calcium calcium content used
Detected value is 42.5%.It tests 1 group and tests 2 groups of broiler chicken daily gains higher than control group 2.18%, 3.49% respectively.Daily ingestion amount
Higher than control group 1.85%, 2.09% respectively.In terms of feed conversion rate, 1 group of test and test are 2 groups higher than control group respectively
1.03%, 1.04%.Each group survival rate indifference.The above results explanation, addition hydroxy chloride calcium substitute mountain flour, are suitably reducing
In the case where calcium source additive amount, have effects that improve meat chicken growth performance.
Application Example 2:
The hydroxy chloride calcium prepared in embodiment 2 is used for the feeding experiment of laying hen.
Select the blue brown laying hen in 60 week old sea, 800 plumages.It is randomly divided into 4 groups, every group of 5 repetitions, each 40 plumage of repetition.Its
In, control group adds 30kg microlith powder/t mixed feed in basal diet, and hydroxy chloride is added in 1 group of test in basal diet
Calcium (hydroxy chloride calcium from embodiment 2, similarly hereinafter) 10kg+10kg microlith powder/t mixed feed tests 2 groups in basal diet
Hydroxy chloride calcium 13kg+10kg microlith powder/t mixed feed is added, 3 groups is tested and adds hydroxy chloride calcium in basal diet
20kg/t mixed feed.Each group basal diet is consistent, and insufficient section is supplemented with zeolite powder, other calcium sources are matched with 75kg middling flour/t
Feed is closed, (the total calcium level of control group daily ration is 3.9% to supplement calcium monohydrogen phosphate 8kg/t mixed feed, 0.25%) digestion phosphorus is.Examination
During testing, laying hen is placed in the raising of ladder cage, and whole process is freely eaten and free water, and according to routine immunization program immunity.Examination
Test the period totally 28 days.
Testing index, egg laying performance: statistics feed intake, egg number, egg size, broken egg number calculate laying rate, feedstuff-egg ratio, break
Egg rate.Eggshell quality: detection shell thickness, eggshell strength.As a result as shown in table 2 below.
Table 2: influence of the hydroxy chloride calcium to Layer Production Performance and eggshell quality
As can be seen from Table 2: the mountain flour calcium content detected value that this test uses is 35.6%, and hydroxy chloride calcium calcium used contains
Detection values are 42.5%.Test 1 group, 2 groups of test, 3 groups of laying rate of laying hen of test respectively higher than control group 0.29%,
1.15%, 0.77%；Feedstuff-egg ratio reduces by 0.86%, 2.58%, 1.72% than control group respectively；Test 2 groups of shell thicknesses and egg
Shell intensity highest, respectively higher than control group 5.43%, 4.02%.The above results explanation, is added in Egg Production of Laying Hens later period feed
Low dosage hydroxy chloride calcium partly or entirely substitutes microlith powder, in the case where can suitably reduce calcium source additive amount, reduces discharge
While pressure, have the effect of improving Layer Production Performance and quality of egg.
Application Example 3:
The hydroxy chloride calcium that embodiment 3 is prepared is applied in growing-finishing pig feeding experiment.
Test uses the random packet design of single-factor, selects the Ternary Pig that 90 genetic backgrounds are identical, are in a good state of health
Growing-finishing pig is randomly divided into 3 processing, and 5 repetitions of each processing, each repetition 6, average weight is unanimously (P < 0.05).It sets
It raises, be freely eaten and drink water in cement flooring column home.Wherein, control group adds 12.0kg mountain flour in basal diet (Ca contains
37.2%)/t mixed feed is measured, 1 group of test is added hydroxy chloride calcium (Ca content 42.5%) 10.5kg/t in basal diet and matched
Feed (hydroxy chloride calcium from embodiment 3, similarly hereinafter) is closed, 2 groups is tested and adds hydroxy chloride calcium (Ca contents in basal diet
42.5%) 7.5kg/t mixed feed.Each group basal diet is consistent, other calcium sources and phosphorus source are calcium monohydrogen phosphate, and additive amount is
4kg/t mixed feed.Test period, totally 35 days.Test data sheet and sample acquisition: (1) feeding amount, the pig health recorded daily
Situation；(2) before on-test at the end of, test pig empty stomach 12h (free water) weighs afterwards, records weight and simultaneously calculates test pig
Feed intake, daily gain and feed-weight ratio；(3) blood serum sample acquires: test 9:00 in morning last day weighs on an empty stomach, every place
Test pig each 3 that counterpoise ± 2kg is randomly selected in reason group, vena cava anterior are taken a blood sample at 4 DEG C, and 1800rpm is centrifuged 10-15min
Serum is prepared, is saved backup under the conditions of -20 DEG C.
The measurement of test index: (1) calculating of growth performance index.Average daily gain=feeding gross weight/(raising number of days
× head number)；Average daily gain=total augment weight/(raising number of days × head number)；Feed-weight ratio=feeding gross weight/total augment weight × 100%.
(2) measurement of physiochemical indice: Swine serum calcium content pours a libation phthalein complexon colorimetric method for determining using adjacent first, and phosphorus measures serum with ultraviolet method
Content, Serum alkaline phosphatase activity are measured using performance rate method.Determining instrument is to use Roche automatic clinical chemistry analyzer.Detection
As a result as shown in table 3 below.
Table 3: Different Calcium Sources and calcium level are added in feed to the shadow of growth of growing-finishing pigs performance and blood parameters
It rings
From upper table 3 as it can be seen that 2 groups of growing and fattening daily gain in pigs of test and feed conversion rate are optimal, the hydroxyl of lower dosage is added
1 group of growth performance of test of base calcium chloride is suitable with control group.In terms of Biochemical Indices In Serum, each group calcium level and phosphorus level nothing
Notable difference.The above results explanation is added the mountain flour of the hydroxy chloride calcium substitution high dose of low dosage, can not only be maintained normal
Calcium uptake metabolism, and have improvement to growth performance.
Application Example 4:
The hydroxy chloride calcium prepared in embodiment 1 is added in china holstein cows material.
Age, parity, the output of milk, china holstein cows (605 ± 23kg) 4 similar in lactation period are chosen in test, and the 3rd
Tire, lactation (90 ± 1.7) d, the output of milk (20.35 ± 0.96).This test diet is matched according to Chinese raising dairy cattle standard
It makes (total calcium 0.68%, total phosphorus 0.39%), altogether 4 kinds of test diets of design, outside diet deliming contents level, other trophic level phases
Together, meet the nutritional need of china holstein cows, the supply amount of Dietary Calcium presses Chinese raising dairy cattle standard recommendation needs respectively
The 100% of amount adds 0.20% hydroxy chloride calcium A group (hydroxy chloride calcium from embodiment 1, similarly hereinafter), addition 0.18%
Hydroxy chloride calcium B group, 0.16% hydroxy chloride calcium C group of addition, 0.14% hydroxy chloride calcium D group of addition.Test daily ration belongs to entirely
Mixed ration (TMR).Using 4 × 4 Latin―Square designs, test arrangement is shown in Table 4.Each issue of test 17d, wherein preliminary trial period 14d, positive to try
Phase 3d.Subfield ties drylot feeding in entire experimental period, and daily sports ground move freely 5-6h, whole free water.
The measurement of test index: (1) daily dry matter intake and the output of milk performance test: are recorded；(2) excrement calcium
Content, urinary calcium assay: urine sample is in the daily 06:30 acquisition of just examination phase, and excrement sample is in the daily 08:30 acquisition of just examination phase.(3)
Blood specimen collection: in the positive examination phase daily 08:00 (before feeding) from the jugular vein blood collection 20mL of test milk cow, be placed in plus heparin sodium from
In heart pipe, it is centrifuged 15min under 3000rpm on constant temperature centrifuge immediately, blood plasma is taken out in separation.Blood plasma is divided into 2 parts, is put into -80
DEG C ultra low temperature freezer in it is spare.1 part refers to for measuring the blood biochemicals such as plasma calcium phosphorus concentration and alkaline phosphatase (ALP) activity
Mark, 1 part for measuring the hormones such as serum parathyroid plain (PHT), calcitonin (CT), osteocalcin (BGP), aldosterone (ALD)
Concentration.
Table 4: 4 × 4 Latin―Square designs of test
| Project | Ox 1 | Ox 2 | Ox 3 | Ox 4 |
| 1st phase | Diet A | Diet B | Diet C | Diet D |
| 2nd phase | Diet B | Diet C | Diet D | Diet A |
| 3rd phase | Diet C | Diet D | Diet A | Diet B |
| 4th phase | Diet D | Diet A | Diet B | Diet C |
Testing result is shown in Table 5.
Table 5: influence of the diet hydroxy chloride calcium level to dairy cattle and calcium metabolism
From upper table 5 as it can be seen that 0.18% hydroxy chloride calcium level diet dairy cattle of addition is optimal.Lower than raising mark
In the case where quasi- calcium level, with the raising of hydroxy chloride calcium additive amount, milk performance is in raising trend.Excrement, urine are calcium
Discharge approach, with the raising of diet calcium level, the digestibility of calcium is reduced.Normocalcemic physiological range (7.24-7.54), this
Test is in the normal range.Parathormone is a kind of important hormone for adjusting bone metabolism, and effect is when blood calcium reduces
Promote the mobilization of bone calcium, to maintain the normal level of blood calcium.Osteocalcin can be used to measure the turnaround speed of bone calcium.This test is aobvious
Show that parathormone is increased as the additive amount of calcium reduces, osteocalcin is increased as hydroxy chloride calcium additive amount increases.With
Normal calcium metabolism rule is similar.Generally, hydroxy chloride calcium can maintain the eubolism of calcium, and 0.18% hydroxy chloride calcium adds
Level is added to have the function of preferably improving dairy cattle.
Claims (10)
1. a kind of preparation method for the hydroxy chloride calcium that can be used for animal feed, which comprises the following steps: will be alkaline
Calcium source is uniformly mixed with calcium chloride, and water is added, heats under stiring, isothermal reaction, is dried after reaction to get hydroxy chloride is arrived
Change calcium.
2. preparation method according to claim 1, which is characterized in that the alkalinity calcium source is calcium oxide and/or hydroxide
Calcium.
3. preparation method according to claim 1, which is characterized in that the alkalinity calcium source and the molar ratio of calcium chloride control
For (1.01-1.20): 1.
4. preparation method according to claim 1, which is characterized in that the amount that water is added accounts for alkaline calcium source, calcium chloride and water
The 10%-50% of gross mass.
5. preparation method according to claim 1, which is characterized in that when the isothermal reaction, control the temperature of reaction system
Degree is 50-105 DEG C, and the control reaction time is 0.5-2h.
6. preparation method according to claim 5, which is characterized in that the temperature for controlling reaction system is 80-105 DEG C.
7. preparation method according to claim 1 to 6, which is characterized in that the isothermal reaction is dry in rake
It is carried out in machine, detailed process is the following steps are included: be added to rake from the feed opening of rake type drier for alkaline calcium source and calcium chloride
In formula drying machine, unlatching is uniformly mixed, and water is added, heats under stiring, isothermal reaction, after reaction directly in rake
Blanking is dried in drying machine to get hydroxy chloride calcium is arrived.
8. preparation method according to claim 7, which is characterized in that the rake type drier is vacuum rake dryer.
9. a kind of hydroxy chloride calcium being prepared such as preparation method of any of claims 1-8 is led in animal feed
The application in domain, which is characterized in that the molecular formula of the hydroxy chloride calcium is Ca (OH) Cl.
10. application according to claim 9, which is characterized in that when the hydroxy chloride calcium is used for pannage, addition
Amount is that 1.0-12.0kg hydroxy chloride calcium is added in feed per ton；When the hydroxy chloride calcium is used for poultry feed,
Additive amount is that 1.0-20.0kg hydroxy chloride calcium is added in feed per ton；The hydroxy chloride calcium is used for ruminant animals feed
When, additive amount is that 0.1-2.0kg hydroxy chloride calcium is added in fully mixed diet per ton.
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