CN103549162B - Novel feed additive and preparation method thereof - Google Patents
Novel feed additive and preparation method thereof Download PDFInfo
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- CN103549162B CN103549162B CN201310535833.3A CN201310535833A CN103549162B CN 103549162 B CN103549162 B CN 103549162B CN 201310535833 A CN201310535833 A CN 201310535833A CN 103549162 B CN103549162 B CN 103549162B
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Abstract
The invention discloses a novel feed additive and a preparation method of the novel feed additive. The additive comprises an enteric coated nano zinc oxide particle, wherein the particle comprises a nano zinc oxide core grain, a small intestine passing coating layer, a middle-layer nano zinc oxide layer and a stomach passing coating layer from inside to outside. The additive is prepared by carrying out two times of coating by using nano zinc oxide and a coating material. The finished product is used as the feed additive to be used for a livestock and poultry feed to prevent livestock and poultry from diarrhea and accelerate the livestock and poultry to grow. The feed additive adopts the nano zinc oxide; the use amount of the nano zinc oxide is less than that of common zinc oxide and the anti-diarrhea and growth-accelerating effects are better than that of the common zinc oxide due to a specific surface effect and a special ion effect of the nano zinc oxide.
Description
Technical field
The preparation method who the present invention relates to a kind of feed addictive and this additive, this feed addictive mainly comprises nano zine oxide.
Background technology
Common zinc oxide uses in animal and fowl fodder for a long time as a kind of feed addictive, and it promotes growth and Antidiarrheic effect to be generally acknowledged by industry.Nano zine oxide has unique skin effect and physicochemical property as a kind of new material, and its result of use is better than common zinc oxide.Thereby but all easily being become zinc ion by animal stomach acids destroy in the time using as feed addictive, common zinc oxide and nano zine oxide lost efficacy.
Realizing in process of the present invention, inventor finds that in prior art, at least there are the following problems:
The negative effect of high zinc is the absorption that affects other trace elements, reduces the utilization ratio of phytase in feed.In the time that the intake of zinc exceedes the discharge capacity of each excretory organs in body, will destroy permanent steady mechanism in body.Thereby the piglet that uses for a long time high zinc daily ration there will be ochrodermia, by phenomenons such as thick disorderly curling, the anaemias of hair.In addition, high zinc daily ration makes most of zinc be drained in environment with ight soil, causes environmental pollution, the zinc content overproof in soil, and from the angle evaluation of food chain, it finally can work the mischief to people's health.
Summary of the invention
Given this, the feed addictive that provides a kind of zinc oxide to be fully utilized is provided the object of the invention, and the preparation method of this feed addictive.This additive passes through double-layer coatings technical protection nano zine oxide not by stomach acids destroy; entering after enteron aisle points two sections discharges; discharge sub-fraction at small intestine (more than pH=5.5); discharge most of at colon (more than pH=6.7); thereby ensure the maximum service efficiency of nano zine oxide; economize on resources, protection of the environment.
For solving above technical problem, technical scheme provided by the invention is, a kind of novel fodder additive is provided, and this additive comprises enteric nano granular of zinc oxide, and this particle is respectively from inside to outside nano zine oxide core grain, too small enteric coating layer, middle level nano zine oxide layer and crosses stomach coatings; The constituent of described nano zine oxide core grain is nano zine oxide, maltodextrin and HPMC; The constituent of described too small enteric coating layer is ethyl cellulose and Ac-Di-Sol; The constituent of described middle level nano zine oxide layer is nano zine oxide; The described constituent of crossing stomach coatings is acrylic resin, Ac-Di-Sol, Hydroxypropyl methylcellulose.
Preferably, the particle diameter of described nano zine oxide is 1-100nm.
Preferably, described enteric nano granular of zinc oxide particle diameter is 10-30 order.
Further, the weight proportion of each constituent of described nano zine oxide core grain is respectively: nano zine oxide 90-98%, maltodextrin 1-5%, HPMC 1-5%.
Further, the weight proportion of the constituent of described too small enteric coating layer is respectively: Ac-Di-Sol 17-73%, ethyl cellulose 27-83%.
The weight proportion of the described constituent of crossing stomach coatings is respectively: acrylic resin 50-91%, Ac-Di-Sol 5-31%, Hydroxypropyl methylcellulose 3-29%.
The present invention also provides a kind of preparation method of novel fodder additive, and concrete steps are as follows:
(a) 90-98% nano zine oxide, 1-5% maltodextrin, 1-5% HPMC are put into centrifugal granulator machine after mixing and make 30-80 order granule;
(b) use 3-10% ethyl cellulose, 2-8% Ac-Di-Sol, 88-95% ethanol to be mixed with coating solution; The granule that step (a) is made is put into fluidized coating pot, sprays into coating solution with spray gun; Coated end for the first time after granule weightening finish 2-8%;
(c) by 60%, the Zinc oxide particles after dressing and 40% nano zine oxide powder are put into shot-blasting machine granulation for the first time;
(d) use 10-30% acrylic resin, 2-5% Ac-Di-Sol, 1-5% Hydroxypropyl methylcellulose, 60-87% ethanol to be mixed with coating solution, the Zinc oxide particles that step (c) is made is put into fluidized bed coating pot, sprays into coating solution with spray gun;
(e) after Zinc oxide particles weightening finish 15-20%, emit, be dried, cross reciprocating sieve, in product 10-30 order.
Preferably, the particle diameter of described nano zine oxide is 1-100nm.
Compared with prior art, a technical scheme tool in technique scheme has the following advantages:
The present invention makes granule by nano zine oxide by centrifugal granulator machine, and granule is being carried out making finished product after twice dressing with coating solution.Can prevent this finished product as feed addictive from livestock and poultry diarrhea for animal and fowl fodder, promote growth of animals or poultry.This novel fodder additive applying nano zinc oxide, the specific surface effect of nano zine oxide and special ion effect are still less better with anti diar rhea growth-promoting effect than common zinc oxide consumption as feed addictive.
The present invention is by double-layer coatings technology, and when having solved nano zine oxide and using in animal and fowl fodder as feed addictive, additive capacity is large, and livestock and poultry are by problems such as the thick unrest of hair, ochrodermia, a large amount of residual contamination environment of feces of livestock and poultry zinc ion.
The present invention passes through double-layer coatings technical protection nano zine oxide not by stomach acids destroy; entering after enteron aisle points two sections discharges; discharge 30% left and right at small intestine (more than pH=5.5); discharge 70% left and right at colon (more than pH=6.7); thereby ensure the maximum service efficiency of nano zine oxide; economize on resources, protection of the environment.
Nano zine oxide in novel fodder additive destructive rate is under one's belt 1/10th of common zinc oxide, nano zine oxide branch's release as required in enteron aisle simultaneously, thus reach best result of use and optimal utilization efficiency.
Detailed description of the invention
Embodiment 1
This additive comprises enteric nano granular of zinc oxide, and this particle is respectively from inside to outside nano zine oxide core grain, too small enteric coating layer, middle level nano zine oxide layer and crosses stomach coatings; The constituent of described nano zine oxide core grain is nano zine oxide, maltodextrin and HPMC; The constituent of described too small enteric coating layer is ethyl cellulose and Ac-Di-Sol; The constituent of described middle level nano zine oxide layer is nano zine oxide; The described constituent of crossing stomach coatings is acrylic resin, Ac-Di-Sol, Hydroxypropyl methylcellulose.
This novel fodder additive is prepared according to following steps:
(a) 90% nano zine oxide, 5% maltodextrin, 5% HPMC are put into centrifugal granulator machine after mixing and make 30-80 order granule, the particle diameter of nano zine oxide is 1-100nm.
(b) use 3% ethyl cellulose, 2% Ac-Di-Sol, 95% ethanol to be mixed with coating solution; The granule that step (a) is made is put into fluidized coating pot, sprays into coating solution with spray gun; Coated end for the first time after granule weightening finish 2%.
(c) by 60%, the Zinc oxide particles after dressing and 40% nano zine oxide powder are put into shot-blasting machine granulation for the first time;
(d) use 30% acrylic resin, 5% Ac-Di-Sol, 1% Hydroxypropyl methylcellulose, 64% ethanol to be mixed with coating solution, Zinc oxide particles is put into fluidized bed coating pot, spray into coating solution with spray gun;
(e) after Zinc oxide particles weightening finish 15%, emit, be dried, cross reciprocating sieve, obtain product, its particle diameter is in 10-30 order.Embodiment 2
This novel fodder additive is prepared according to following steps:
(a) 98% nano zine oxide, 1% maltodextrin, 1% HPMC are put into centrifugal granulator machine after mixing and make 30-80 order granule.
(b) use 10% ethyl cellulose, 2% Ac-Di-Sol, 88% ethanol to be mixed with coating solution; The granule that step (a) is made is put into fluidized coating pot, sprays into coating solution with spray gun; Coated end for the first time after granule weightening finish 8%;
(c) by 60%, the Zinc oxide particles after dressing and 40% nano zine oxide powder are put into shot-blasting machine granulation for the first time;
(d) use 10% acrylic resin, 2% Ac-Di-Sol, 1% Hydroxypropyl methylcellulose, 87% ethanol to be mixed with coating solution, Zinc oxide particles is put into fluidized bed coating pot, spray into coating solution with spray gun;
(e) after Zinc oxide particles weightening finish 20%, emit, be dried, cross reciprocating sieve, obtain product, its particle diameter is in 10-30 order.Embodiment 3
This novel fodder additive is prepared according to following steps:
(a) 94% nano zine oxide, 3% maltodextrin, 3% HPMC are put into centrifugal granulator machine after mixing and make 30-80 order granule.
(b) use 5% ethyl cellulose, 5% Ac-Di-Sol, 90% ethanol to be mixed with coating solution; The granule that step (a) is made is put into fluidized coating pot, sprays into coating solution with spray gun; Coated end for the first time after granule weightening finish 2-8%;
(c) by 60%, the Zinc oxide particles after dressing and 40% nano zine oxide powder are put into shot-blasting machine granulation for the first time;
(d) use 20% acrylic resin, 5% Ac-Di-Sol, 5% Hydroxypropyl methylcellulose, 70% ethanol to be mixed with coating solution, Zinc oxide particles is put into fluidized bed coating pot, spray into coating solution with spray gun;
(e) after Zinc oxide particles weightening finish 17%, emit, be dried, cross reciprocating sieve, obtain product, its particle diameter is in 10-30 order.Embodiment 4
The novel fodder additive that uses embodiment 3 to prepare carries out compliance test result, and contrast adopts the common zinc oxide in market purchasing.
This test adopts 250 DLY weanling pigs (Weaning Age 20 ± 2d, starting weight 6.05 ± 0.10kg), is divided at random 5 processing, 5 repetitions of each processing, 10 piglets of each repetition.Process one and do not add zinc oxide; Process two and add 0.5Kg novel fodder additive; Process three and add 1.0Kg novel fodder additive; Process four and add 1.5Kg novel fodder additive; Process five and add 3Kg common zinc oxide.Experimental period is 14 days, and Diet Formula and trophic component are in table 1, and feed shape is broken material.
Table 1 daily ration composition and trophic level (basis of feeding, %)
* 1% compound premix can be every kilogram of complete diet pellet and provides: Fe150mg, Cu195mg, Zn150mg, Mn30mg, I0.3mg, Se0.3mg; VA12000IU, VD33200IU, VE80IU, VK32.5mg, B12.5mg, B26.5mg, B65mg, B120.05g, nicotinic acid 45mg, pantothenic acid 20mg, folic acid 1.5mg, biotin 0.15mg, complex enzyme, antibiotic (colistin 20ppm), acidulant (compound) mould inhibitor, antioxidant.
Feeding and management:
The piglet 4 times (8:00,12:00,16:00,20:00) of feeding every day, within average 2 hours, patrol circle once, observe the piglet situation of searching for food, ensure that in piglet hopper, clout amount is not less than 1/4 of hopper volume, hopper is rectangle four-hole elongated slot, and water fountain is nipple-shape.All piglet free choice feedings and drinking-water; When pig death occurs or eliminates because of disease in process of the test, take individual weight and settle accounts feed consumption.Duration of test keeps pig house to ventilate, clean, and in colony house, temperature is controlled at 23～25 DEG C, does colony house cleaning every day, sterilizes weekly 2 times in pig farm, and duration of test immune programme for children and other feeding and management are carried out according to pig farm regulation.
Production performance evaluation method:
When on-test and end, piglet is weighed, and record the feed intake of piglet in experimental period, according to the production performance of these data determination piglets, comprise that average daily gain (ADG), average daily ingestion amount (ADFI) and feed increase weight than (F/G), each index calculating method is as follows:
Average daily gain (g/d)=average weight gain (the kg)/number of days of feeding (d) × 1000
Average daily ingestion amount (g/d)=average feed intake (kg)/number of days of feeding (d) × 1000
Feed increases weight than total feed consumption rate of (F/G)=experimental period (kg)/experimental period total augment weight (kg)
Grice diarrhoea rate evaluation method:
Duration of test 10:00 every day and 16:00 observe piglet defecation situation scoring (table 2).Diarrhea frequency (%)=diarrhoea number summation/test pig's head number × 100%, Scours index=stools scored sum/test pig's head number.
Table 2 grice diarrhoea degree standards of grading
Fur standards of grading:
Standards of grading are in table 3, and the ruddy degree mark+hair color of fur index=skin brightness mark+hair is along degree mark.
The scoring of table 3 fur index
The each group of every day entry is eliminated pig, the death rate, disease generation and medication situation.
Result of the test
1, the growth performance of test pig
As shown in table 4, at whole duration of test, piglet ADFI, the ADG and the F/G that add zinc oxide group are all good than the control group that does not add zinc oxide.Respectively from 0-7 days, 7-14 days, and the data of 0-14, process two and process one between difference not remarkable, be all better than and process one but process two ADFI, ADG and F/G; And process three, process four, to process five or three groups of data differences not remarkable, their ADFI and ADG are than processing one and process two and be significantly increased, F/G significantly reduces.From whole duration of test, the ADFI of processing three, processing four, five or three groups of ratio processing one of processing have improved respectively 13.9%, 8.33%, 5.56%, and ADG has improved respectively 20.8%, 16.7%, 16.7%, and F/G has reduced respectively 6.0%, 7.33%, 8.0%.
Under this experimental condition, add 1.0kg/ ton novel fodder additive and 1.5kg/ ton novel fodder additive and 3.0kg/ ton common zinc oxide the production performance effect of piglet is approached, so can replace 3.0kg/ ton common zinc oxide with 1.0kg/ ton novel fodder additive completely; In addition, although the effect outline of 1.5kg/ ton novel fodder additive is better than the novel feed additives of 1.0kg/ ton, from whole economic benefit, or want economical with 1.0kg/ ton.
In table 4 daily ration, add the impact on weaned piglets of novel fodder additive and common zinc oxide
Note: colleague's data different letter representation significant differences of shoulder motes (P<0.05, n=5), same letter represents not remarkable (P>0.05, n=5) of difference.
2, the diarrhoea situation of test pig
At whole duration of test, do not have the pig phenomena of mortality to occur.Concrete diarrhoea situation is in table 5, in test early stage (0-7 days), each processed group has the phenomenon of having loose bowels, and control group has 5 pig generation diarrhoea situations, processing three, four, five only has 1 pig to occur laxativeness, illustrates that adding zinc oxide has played control action to diarrhoea.Under this experimental condition, add 1.0kg/ ton novel fodder additive and 1.5kg/ ton novel fodder additive diarrhoea control effect and the 3.0kg/ ton common zinc oxide to piglet and approach.
In table 5 daily ration, add the impact of nano zine oxide on grice diarrhoea situation
The fur situation of 2.3 test pig
As shown in table 6, under this experimental condition, by adding novel fodder additive, significantly improve the coat condition of piglet, and interpolation common zinc oxide, although can improve coat condition in early stage, to the improvement degree in later stage just start to reduce, as for whether can add zinc oxide and cause fur variation because of a large amount of later, also need further to extend the test period to observe.
In table 6 daily ration, add the impact of novel fodder additive on piglet coat condition
By evidence, in daily ration, add novel fodder additive and can effectively control the diarrhoea of piglet, promote the growth of piglet, improve coat condition.Particularly, in feed, add novel fodder additive according to 1.0-1.5kg/ ton and can obtain good productivity effect, also can reduce the pollution of zinc to environment simultaneously.
Below be only the preferred embodiment of the present invention, it should be pointed out that above-mentioned preferred embodiment should not be considered as limitation of the present invention, protection scope of the present invention should be as the criterion with claim limited range.For those skilled in the art, without departing from the spirit and scope of the present invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. a novel fodder additive, is characterized in that, this additive comprises enteric nano granular of zinc oxide, and this particle is respectively from inside to outside nano zine oxide core grain, too small enteric coating layer, middle level nano zine oxide layer and crosses stomach coatings; The constituent of described nano zine oxide core grain is nano zine oxide, maltodextrin and HPMC; The constituent of described too small enteric coating layer is ethyl cellulose and Ac-Di-Sol; The constituent of described middle level nano zine oxide layer is nano zine oxide; The described constituent of crossing stomach coatings is acrylic resin, Ac-Di-Sol and Hydroxypropyl methylcellulose.
2. novel fodder additive according to claim 1, is characterized in that, the particle diameter of described nano zine oxide is 1-100nm.
3. novel fodder additive according to claim 1, is characterized in that, described enteric nano granular of zinc oxide particle diameter is 10-30 order.
4. novel fodder additive according to claim 1, is characterized in that, the weight proportion of each constituent of described nano zine oxide core grain is respectively: nano zine oxide 90-98%, maltodextrin 1-5%, HPMC 1-5%.
5. novel fodder additive according to claim 1, is characterized in that, the weight proportion of the constituent of described too small enteric coating layer is respectively: Ac-Di-Sol 17-73%, ethyl cellulose 27-83%.
6. novel fodder additive according to claim 1, is characterized in that, the weight proportion of the described constituent of crossing stomach coatings is respectively: acrylic resin 50-91%, Ac-Di-Sol 5-31%, Hydroxypropyl methylcellulose 3-29%.
7. a preparation method for novel fodder additive, is characterized in that, concrete steps are as follows:
(a) 90-98% nano zine oxide, 1-5% maltodextrin, 1-5% HPMC are put into centrifugal granulator machine after mixing and make 30-80 order granule;
(b) use 3-10% ethyl cellulose, 2-8% Ac-Di-Sol, 88-95% ethanol to be mixed with coating solution; The granule that step (a) is made is put into fluidized coating pot, sprays into coating solution with spray gun; Coated end for the first time after granule weightening finish 2-8%;
(c) by 60%, the nano granular of zinc oxide after dressing and 40% nano zine oxide powder are put into shot-blasting machine granulation for the first time;
(d) use 10-30% acrylic resin, 2-5% Ac-Di-Sol, 1-5% Hydroxypropyl methylcellulose, 60-87% ethanol to be mixed with coating solution, the nano granular of zinc oxide that step (c) is made is put into fluidized bed coating pot, sprays into coating solution with spray gun;
(e) after Zinc oxide particles weightening finish 15-20%, emit, be dried, cross reciprocating sieve, in product 10-30 order.
8. the preparation method of novel fodder additive according to claim 7, is characterized in that, the particle diameter of described nano zine oxide is 1-100nm.
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| CN104605142B (en) * | 2015-02-27 | 2018-03-27 | 浙江海洋学院 | The processing technology of microcapsules grouper micro-granulated feed |
| CN104686808A (en) * | 2015-03-26 | 2015-06-10 | 无锡正大畜禽有限公司 | 50% enteric package zinc oxide nanoparticle preparation method |
| CN105012246B (en) * | 2015-08-19 | 2018-04-06 | 湖北博华农牧科技有限公司 | A kind of nano zine oxide coating process |
| CN105146204A (en) * | 2015-09-29 | 2015-12-16 | 安徽麒麟正大饲料有限公司 | Preparing method for antibacterial diarrhea-preventing piglet feed additive |
| CN105166552A (en) * | 2015-09-29 | 2015-12-23 | 安徽麒麟正大饲料有限公司 | Preparation method of suckling pig feed additive capable of enhancing resistance and sterilizing |
| CN105707440A (en) * | 2016-04-25 | 2016-06-29 | 四川定锌丸饲料科技有限公司 | Feed additive coating agent as well as preparation method and application thereof |
| CN106260599A (en) * | 2016-08-12 | 2017-01-04 | 广汉隆达饲料有限公司 | Enteric zinc oxide micropill |
| CN107581359A (en) * | 2017-10-20 | 2018-01-16 | 浙江耀飞生物科技有限公司 | A kind of feed grade enteric solubility oxidation zinc additive and preparation method |
| CN109511786A (en) * | 2019-01-04 | 2019-03-26 | 重庆威迪特药业有限责任公司 | A kind of feed addictive and preparation method thereof containing zinc oxide |
| CN110100965A (en) * | 2019-05-30 | 2019-08-09 | 福建丰久生物科技有限公司 | A kind of derma type essential oil organic acid composite feed additive and its preparation method and application |
| CN115005329A (en) * | 2022-03-30 | 2022-09-06 | 浙江大飞龙动物保健品股份有限公司 | Small molecular organic acid compound feed additive |
| CN115088788A (en) * | 2022-05-20 | 2022-09-23 | 广东粤港澳大湾区国家纳米科技创新研究院 | Feed additive and preparation method and application thereof |
| RS20220887A1 (en) | 2022-09-23 | 2024-03-29 | Beointech Doo Beograd | Ultrasonic low temperature synthesis of an advanced multifunctional feed additive based on highly active zinc oxide deposited on inorganic and organic carriers for application in animal feed production |
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| CN1199635C (en) * | 2000-09-15 | 2005-05-04 | 付俊昌 | Capsule and its preparing process and application |
| US20030190343A1 (en) * | 2002-03-05 | 2003-10-09 | Pfizer Inc. | Palatable pharmaceutical compositions for companion animals |
| CN102125171A (en) * | 2010-01-12 | 2011-07-20 | 杭州康德权饲料有限公司 | Method for preparing microencapsulation envelope zinc oxide |
| CN102138642A (en) * | 2010-02-02 | 2011-08-03 | 广州市正百饲料科技有限公司 | Enteric zinc oxide micropills and preparation method thereof |
| CN101803684B (en) * | 2010-04-16 | 2012-08-08 | 胡文锋 | Enteric zinc oxide and method for preparing same |
| CN102308916B (en) * | 2011-08-04 | 2013-08-28 | 珠海天凯生物科技有限公司 | Novel enteric sustained-release pellet for feed and preparation method thereof |
| CN102318750B (en) * | 2011-10-08 | 2013-06-05 | 成都巨星农牧科技有限公司 | Coated submicron feed-grade zinc oxide and preparation method thereof |
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