CN108112786A - Application of the cysteine as enteron aisle essential nutrients in animal health maintenance - Google Patents

Application of the cysteine as enteron aisle essential nutrients in animal health maintenance Download PDF

Info

Publication number
CN108112786A
CN108112786A CN201711367453.8A CN201711367453A CN108112786A CN 108112786 A CN108112786 A CN 108112786A CN 201711367453 A CN201711367453 A CN 201711367453A CN 108112786 A CN108112786 A CN 108112786A
Authority
CN
China
Prior art keywords
cysteine
animal
preparation
application
product
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711367453.8A
Other languages
Chinese (zh)
Inventor
尹靖东
焦宁
覃春富
王璐
王宇波
邱凯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Agricultural University
Original Assignee
China Agricultural University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Agricultural University filed Critical China Agricultural University
Priority to CN201711367453.8A priority Critical patent/CN108112786A/en
Publication of CN108112786A publication Critical patent/CN108112786A/en
Pending legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K50/00Feeding-stuffs specially adapted for particular animals
    • A23K50/30Feeding-stuffs specially adapted for particular animals for swines
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K20/00Accessory food factors for animal feeding-stuffs
    • A23K20/10Organic substances
    • A23K20/142Amino acids; Derivatives thereof
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23KFODDER
    • A23K50/00Feeding-stuffs specially adapted for particular animals
    • A23K50/60Feeding-stuffs specially adapted for particular animals for weanlings

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Animal Husbandry (AREA)
  • Zoology (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Birds (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Fodder In General (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Abstract

The invention discloses application of the cysteine as enteron aisle essential nutrients in animal health maintenance.The present invention provides cysteine or cysteine preparation in the application as enteron aisle essential nutrients in animal health maintenance;The main component of the cysteine preparation is cysteine or the substance that cysteine can be converted into alimentary canal.Of the invention study finds that cysteine/cystine is enteron aisle essential amino acid, and the present invention provides effective nutrition technique measure to safeguard that animal intestinal tract is healthy with normal physiological function;The present invention provides a kind of than methionine supplement animal is utilized to need more effective ration preparation technology to cysteine/cystine in daily ration, scientific basis is provided for pig production efficiently, healthy.

Description

Application of the cysteine as enteron aisle essential nutrients in animal health maintenance
Technical field
The invention belongs to livestock-raisings and feed processing technology field, are related to cysteine and exist as enteron aisle essential nutrients Application in animal health maintenance.
Background technology
Conventionally methionine is the essential amino acid of humans and animals, and methionine is in vivo except fulfiling own physiological work( Outside energy, cysteine can also be converted into, and and then cystine is synthesized by dehydrogenation reaction.Cysteine plus cystine is in machine It can mutually convert in vivo, but methionine cannot be converted into.Cysteine, cystine can using methionine as precursor convert and Come, therefore also referred to as semi-dispensable amino acid.At present in animal feeding, typically made up by adding methionine in daily ration The shortage of cysteine.
Animal alimentary canal often by it is various stress (such as weaning stress, reload stress, caused by temperature Change stress), disease The invasion and attack of pathogenic microorganism and mycotoxin or even the reaction that is inflamed due to infection cause loss of appetite, diarrhea, alimentary canal work( Energy disorder etc., has animal health and growth huge blow, therefore the fast quick-recovery animal alimentary canal of clinical means how to be coordinated to be good for Health and normal physiological function have important economic value and animal welfare meaning.Particularly weanling piglet often occurs Many disease of digestive tracts promote intestinal growth by Nutritional measures, and for improving the growth performance of piglet, it is outstanding to improve production efficiency To be important.
External cause causes animal diarrhea, inflammation or stress reaction, and dysfunction occurs in alimentary canal, clinically usually requires It is quick to check daily ration, the feedstuff that removal be toxic or harmful, and the drug for inhibiting microorganism is provided to animal intestinal tract, it gives Enteron aisle anti-inflammatory supplements energy matter and recovers the remedy measures of ionic equilibrium to treat intestines problem.Research shows cysteine The synthesis of the sulfur-bearings bioactive substances such as glutathione, taurine is participated in indirectly.But research of the cysteine in pig produces It is less, and influence of the cysteine to piglet growth performance and intestinal growth does not have been reported that also.
The content of the invention
New method and a kind of new application of cysteine the object of the present invention is to provide a kind of animal intestinal tract health care.
Specifically, following several respects application provided by the invention all belongs to the scope of protection of the present invention:
First, cysteine or cysteine preparation as enteron aisle essential nutrients in animal health maintenance should With.The main component of the cysteine preparation is cysteine or the object that cysteine can be converted into alimentary canal Matter.
Wherein, the animal intestinal tract essential nutrients is used to supplement the scarce cysteine of animal intestinal tract institute.
Second, cysteine or cysteine preparation as or application in preparing following any product:Animal intestine Road health product, auxiliary product, the auxiliary product for animal alimentary canal post-operative recovery for animal alimentary canal diseases treatment. The main component of the cysteine preparation is cysteine or the substance that cysteine can be converted into alimentary canal.
Wherein, the product is used to supplement the scarce cysteine of animal intestinal tract institute.
3rd, cysteine or cysteine preparation as or application in preparing following any product:For promoting Product into animal intestinal growth, the product for promoting growth of animal, the product for safeguarding animal health.The half Guang ammonia The main component of acid supplement is cysteine or the substance that cysteine can be converted into alimentary canal.
Wherein, the product is used to supplement the scarce cysteine of animal intestinal tract institute.
In addition, the present invention also protects the following two kinds method:
First, it is a kind of supplement animal intestinal tract scarce cysteine method, be by being added in animal feed or daily ration Cysteine or cysteine preparation are realized;Rather than by adding methionine in animal feed or daily ration come real It is existing.The method of the present invention compensates for conventional method can not meet double of Guang of enteron aisle by adding methionine in animal feed or daily ration The demand of propylhomoserin.
Second, a kind of method that vigor for alleviating animal intestinal tract cell caused by cysteine lacks declines, is to pass through Cysteine or cysteine preparation or glutathione is added in into the cultivating system of the animal intestinal tract cell to realize; Rather than it is realized by adding in methionine or Sodium Pyruvate into the cultivating system of the animal intestinal tract cell.
In the above described two methods, the main component of the cysteine preparation is cysteine or in alimentary canal The substance of cysteine can be converted into.
It is above-mentioned it is each application and method in, the substance that cysteine can be converted into alimentary canal for it is any can The substance of cysteine, such as cysteine salt, cystine or cystine salt can be converted into alimentary canal.
In above-mentioned each application and method, the animal includes but not limited to pig, such as weanling pig.At one of the present invention In embodiment, the animal intestinal tract cell is specially swine intestinal epithelium cells, more specifically, such as IPEC-J2 cells.
In addition, a kind of feed for being used to raise pig or daily ration and its preparation method is also claimed in the present invention.
Described in raising the feed or daily ration of pig, standard ileal can to digest (Standardized Ileal Digestible, SID) cysteine content be more than or equal to 0.32%.Wherein, % represents mass percentage.
Further, in described for raising the feed or daily ration of pig, SID methionine contents are 0.36%, SID, half Guang ammonia Acid content is 0.32%.Wherein, % represents mass percentage.
The present invention demonstrates the required ammonia that cysteine is enteron aisle with swine intestinal epithelium cells IPEC-J2 cell models first Base acid, cysteine shortage cause epithelial cell vigor to decline, and supplement methionine cannot alleviate cysteine shortage in culture medium Caused cell viability declines, but above-mentioned effect can be alleviated by supplementing cysteine metabolin glutathione, should the result shows that Cysteine is the function of promoting intestinal growth to play it by synthesizing glutathion and maintain intestinal epithelial cell vigor, and And intestinal epithelial cell cannot be converted into cysteine using methionine.Therefore it is believed that when cysteine deficiency in daily ration When, the required cysteine of animal intestinal tract is that methionine is converted into cysteine by liver, because liver has methionine to turn Sulfenyl acts on relevant enzyme.Then, we design, have prepared the daily ration comprising different level methionine and cysteine, to feed Piglet.It was found that it is respectively American science research committee (2012) (National to work as methionine and cysteine levels in daily ration Research Council, NRC 2012) pig nutritional need recommended amounts when, piglet average daily gain highest, and certain level Cysteine added with increase feed intake effect.It can be carried as chitling road essential amino acid so as to demonstrate cysteine High growth of animal performance.The present invention has prompted effect of the cysteine/cystine as enteron aisle essential amino acid, to safeguard animal Intestinal health and normal physiological function provide effective nutrition technique measure;The present invention provides a kind of than being utilized in daily ration Methionine supplements animal needs more effective ration preparation technology to cysteine/cystine, for pig production efficiently, healthy Provide scientific basis.
Description of the drawings
Fig. 1 is that cysteine lacks the effect added with methionine to pig jejunal epithelium cell viability.As a result represent with right According to the relative level group as reference.As a result represented by mean+/-standard error, n=8.a-b:Different class means have difference Shoulder mark is considered as significant difference (P<0.05).Processing one:Lack cysteine plus cystine in culture medium;Processing two:In processing one Middle addition 0.2mmol/L methionine;Processing three:0.4mmol/L methionine is added in processing one;Processing four:In processing one Add 0.8mmol/L methionine;Processing five:1mmol/L methionine is added in processing one.
Fig. 2 is that cysteine lacks the effect added with associated metabolites to pig jejunal epithelium cell viability.As a result table Show the relative level using control group as reference.As a result represented by mean+/-standard error, n=8.a-b:Different class mean tools There are different shoulder marks to be considered as significant difference (P<0.05).Processing one:Lack cysteine plus cystine in culture medium;Processing two: 0.2mmol/L glutathione is added in processing one;Processing three:0.2mmol/L Sodium Pyruvates are added in processing one;Processing four: 0.3mmol/L Sodium Pyruvates are added in processing one;Processing five:0.4mmol/L Sodium Pyruvates are added in processing one.
Specific embodiment
Experimental method used in following embodiments is conventional method unless otherwise specified.
The materials, reagents and the like used in the following examples is commercially available unless otherwise specified.
% in following embodiments is mass percentage unless otherwise specified.
DMEM-F12 culture mediums, antibiotic, trypsase and PBS, hyclone (Gibco companies, the U.S.).
Tissue Culture Plate (Corning companies, the U.S.).
DMEM culture mediums (US biological companies, the U.S.) without nonessential amino acid.
Cell counting Kit (CCK-8, Japanese colleague).
Amino acid, glutathione, Sodium Pyruvate (Sigma, the U.S.).
Pig jejunal epithelium cell IPEC-J2 (DSMZ companies, Germany).
Corn, dehulled soybean meal, expanded soybean, wheat bran, fish meal, whey powder, calcium bicarbonate, mountain flour, salt, piglet is in advance Batch mixing:Purchased from Beijing Tongli Xingke Agricultural Technology Co., Ltd..
Feeding amino acid:Purchased from Beijing Jia Kang sources development in science and technology Co., Ltd.
CO2gas incubator (MCO-175):Sanyo companies, Japan.
Multi-function microplate reader (SpectraMax M3):Molecular Devices companies, the U.S..
Embodiment 1, cysteine lack the vigor for reducing pig jejunal epithelium cell IPEC-J2
First, the culture of IPEC-J2 cells
Inoculation 5,000~10,000IPEC-J2 cells add in 100 μ L DMEM-F12 in 96 orifice plates, per hole and cultivate completely Base (the DMEM-F12 culture mediums of Gibco, add 10% hyclone and 1% antibiotic), in 37 DEG C of 5%CO2Incubator Liquid is changed in middle culture every other day, sets blank control.
2nd, IPEC-J2 cell culture tests
When cell growth to 70% fusion, following processing is carried out:(1) cysteine plus cystine is lacked in culture medium For 24 hours, (2) are lacking half for (only lacking cysteine plus cystine compared to described above " DMEM-F12 complete mediums ") processing The processing of 0.2,0.4,0.8,1mmol/L methionine is added in cystine and cystine culture medium for 24 hours, (3) are lacking cysteine With addition 0.2mmol/L glutathione in cystine culture medium or the processing of 0.2,0.3,0.4mmol/L Sodium Pyruvates for 24 hours.Every group 8 repetitions are designed, 10 μ L CCK-8 reagents are added in per hole, in 37 DEG C of 5%CO23h is reacted in incubator, is surveyed under microplate reader 450nm Determine absorbance, which is proportionate with cell viability.
3rd, result of the test
As depicted in figs. 1 and 2, the vigor that cysteine significantly reduces swine intestinal epithelium cells is lacked, in cysteine The methionine of various concentration is added in the case of shortage cannot alleviate under IPEC-J2 cell viabilities caused by cysteine lacks Drop, but effect caused by cysteine lacks can be made up by adding glutathione.Illustrate that cysteine is thin for pig gut epithelium The essential amino acid of born of the same parents, it is impossible to supplement its physiological function by supplementing methionine.And when supplement cysteine metabolin paddy When the sweet peptide of Guang and Sodium Pyruvate, it can only alleviate swine intestinal epithelium cells caused by cysteine lacks when supplementing glutathione Vigor declines.Therefore, cysteine is the essential amino acid of intestinal epithelial cell, and cysteine grows intestinal cell Effect is mainly realized by synthesizing glutathion.
Embodiment 2, daily ration cysteine levels influence the growth of weanling pig
The weanling pig that 96 original body mass are 11 ± 0.28kg is selected in experiment, is randomly divided into 4 groups, every group 24.Four Processing is respectively:(1) control group, daily ration SID methionine are that 0.48%, SID cysteines are 0.21%;(2) processing group one arrives Three, daily ration SID methionine are 0.36% (2012 recommended amounts of NRC), and SID cysteines are respectively 0.21%, 0.32% (NRC 2012 recommended amounts *) and 0.43%.Ration Compound keeps all essential amino acid standards in daily ration to return with reference to NRC (2012) The balance of intestinal digestion rate content, metabolic energy and electrolyte.Experimental animal free choice feeding and drinking-water, test period are 28 days.Experiment For diet group into being shown in Table 1, trophic level is shown in Table 2.
Note:* recommended in 2012 standards of NRC " requirement of SID methionine " and " SID methionine and cysteine it is total Requirement ", but without recommending " amount of SID cysteines ", by the total of the SID methionine recommended of NRC 2012 and cysteine Amount is 0.32% after subtracting the amount of the SID methionine of the recommendations of NRC 2012, so " 0.32% is referred to as NRC in the present embodiment The amount of the 2012 SID cysteines recommended ".
Table 1 tests daily ration composition (feeding basis)
Note:1Every kilogram of complete diet pellet provides 10000IU vitamin As, 1500IU vitamine D3s, 30IU vitamin Es, 2.5mg dimensions Raw element K3,1.5mg vitamin B1s, 10mg vitamin B2s, 10mg vitamin B6s, 0.05mg vitamin B12s, 1mg folic acid, 0.5mg Biotin, 30mg niacin, 20mg pantothenic acid, 20mg copper, 100mg iron, 110mg zinc, 40mg manganese, 0.3mg selenium, 0.54mg iodine, 100mg Sweetener, 500mg flavouring agents, 100mg phytases.
2 diets of different nutrition level of table
Note:1STTD, the full enteron aisle digestibility of standard.
Such as table 3, the average daily gain of processing two (SID cysteines are 0.32%) and end are highest again, illustrate egg ammonia Effect is most preferable when acid and cysteine meet respective requirement respectively;And the cysteine of certain level is adopted added with increase The effect of appetite;Feed consumption weightening ratio does not have significant changes between each group.Illustrate that conventional method adds egg ammonia in animal diets Acid can not meet the needs of animal is to cysteine.
3 ileum standard of table can digest influence of the cysteine levels to Growth Performance of Weaning Piglets
Note:1Processing refer to Multiple range test as a result, linear and secondary in a few days grain standard ileal can digest cysteine levels Effect;Shoulder mark of going together is different to represent significant difference (P < 0.05), n=6.
The result of integrated embodiment 1 and embodiment 2, it is seen that:Cysteine is the essential amino acid of swine intestinal epithelium cells, When cysteine plus cystine lacks, intestinal epithelial cell vigor declines.Supplement methionine cannot alleviate cysteine and Guang The decline of cytoactive caused by propylhomoserin lacks, but above-mentioned effect can be alleviated by supplementing cysteine metabolin glutathione. Compared with traditional mixed feed methionine makes up the shortage of cysteine, methionine and cysteine are respectively that NRC 2012 recommends During amount, the average daily gain of weanling pig and whole weight are optimal, illustrate cysteine as trophism essential amino acid energy Enough improve the growth performance of weanling pig.

Claims (10)

1. the application of cysteine or cysteine preparation as enteron aisle essential nutrients in animal health maintenance;
The main component of the cysteine preparation is cysteine or the object that cysteine can be converted into alimentary canal Matter.
2. application according to claim 1, it is characterised in that:The animal intestinal tract essential nutrients is used to supplement animal intestine The scarce cysteine of road institute.
3. cysteine or cysteine preparation as or application in preparing following any product:Animal intestinal tract health care is produced Product, auxiliary product, the auxiliary product for animal alimentary canal post-operative recovery for animal alimentary canal diseases treatment;
The main component of the cysteine preparation is cysteine or the object that cysteine can be converted into alimentary canal Matter.
4. cysteine or cysteine preparation as or application in preparing following any product:For promoting animal intestine Product, the product for promoting growth of animal, the product for safeguarding animal health of road development;
The main component of the cysteine preparation is cysteine or the object that cysteine can be converted into alimentary canal Matter.
5. the application according to claim 3 or 4, it is characterised in that:The product lacks half Guang for supplementing animal intestinal tract Propylhomoserin.
6. it is a kind of supplement animal intestinal tract scarce cysteine method, be by adding cysteine in animal feed or daily ration Or cysteine preparation is realized;
The main component of the cysteine preparation is cysteine or the object that cysteine can be converted into alimentary canal Matter.
7. a kind of method that vigor for alleviating animal intestinal tract cell caused by cysteine lacks declines is by being moved to described Cysteine or cysteine preparation or glutathione is added in the cultivating system of object intestinal cell to realize;
The main component of the cysteine preparation is cysteine or the object that cysteine can be converted into alimentary canal Matter.
8. according to any application or method in claim 1-7, it is characterised in that:The animal is pig.
9. according to any application or method in claim 1-8, it is characterised in that:The animal intestinal tract cell is chitling Tract epithelial cell;
Specifically, the swine intestinal epithelium cells are swine intestinal epithelium cells IPEC-J2.
10. it is a kind of for raise the feed of pig or the preparation method of daily ration or by this method be formulated for raising pig Feed or daily ration, it is characterised in that:Described in raising the feed or daily ration of pig, SID cysteine contents to be more than or equal to 0.32%;Wherein % represents mass percentage.
CN201711367453.8A 2017-12-18 2017-12-18 Application of the cysteine as enteron aisle essential nutrients in animal health maintenance Pending CN108112786A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711367453.8A CN108112786A (en) 2017-12-18 2017-12-18 Application of the cysteine as enteron aisle essential nutrients in animal health maintenance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711367453.8A CN108112786A (en) 2017-12-18 2017-12-18 Application of the cysteine as enteron aisle essential nutrients in animal health maintenance

Publications (1)

Publication Number Publication Date
CN108112786A true CN108112786A (en) 2018-06-05

Family

ID=62230296

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711367453.8A Pending CN108112786A (en) 2017-12-18 2017-12-18 Application of the cysteine as enteron aisle essential nutrients in animal health maintenance

Country Status (1)

Country Link
CN (1) CN108112786A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103478499A (en) * 2013-10-12 2014-01-01 四川特驱投资集团有限公司 Anti-diarrhea complete formula feed for piglets
CN104351562A (en) * 2014-11-25 2015-02-18 武汉轻工大学 Growth promoting agent for promoting growth of weaned pig and application
CN104398498A (en) * 2014-12-04 2015-03-11 武汉轻工大学 Application of N-acetyl-L-cysteine in preparing drug for treating or preventing porcine virus infection
CN106387317A (en) * 2016-08-31 2017-02-15 上海绿博生物科技发展有限公司 Microorganism feed additive capable of protecting pig livers and preparation method of microorganism feed additive

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103478499A (en) * 2013-10-12 2014-01-01 四川特驱投资集团有限公司 Anti-diarrhea complete formula feed for piglets
CN104351562A (en) * 2014-11-25 2015-02-18 武汉轻工大学 Growth promoting agent for promoting growth of weaned pig and application
CN104398498A (en) * 2014-12-04 2015-03-11 武汉轻工大学 Application of N-acetyl-L-cysteine in preparing drug for treating or preventing porcine virus infection
CN106387317A (en) * 2016-08-31 2017-02-15 上海绿博生物科技发展有限公司 Microorganism feed additive capable of protecting pig livers and preparation method of microorganism feed additive

Similar Documents

Publication Publication Date Title
CN102258156B (en) Antibiotic-free culture feed for piglets and preparation method thereof
CN106889331B (en) A kind of pregnant sow premixed feed
CN102771635B (en) Mixed feed for early weaned piglets
CN106721243A (en) A kind of disease-resistant child care pig starter feed without antibiotic and its preparation method and application
CN105248897A (en) Pig forage improving meat quality
US20100227840A1 (en) Use of 25-hydroxy vitamin d3 to improve male animal fertility
CN106212952A (en) A kind of ablactational baby pig premixed feed
CN105581026B (en) A kind of weanling pig resisting stress special feed and its application
CN103005221A (en) Laying hen feed capable of improving hen immunity and egg laying performance
CN107801863A (en) A kind of environment-friendly type laying cycle of laying hens premixed feed
CN104938866A (en) Feed additive with piglet stress resistance and intestinal tract improvement effects and preparation method and application
RU2352139C2 (en) Method of increasing bone strength of pigs, respective composition, its use, feed stuff and premix for pigs
CN105029127A (en) Broiler chicken starter feed
CN107950751A (en) A kind of general concentrated feed of suckling piglet and preparation method thereof
CN104824382A (en) Compound mixed feed for pigling
CN108294181A (en) It is a kind of that there is the feed for protecting piglet intestinal canal barrier function and its application
CN107279488A (en) It is a kind of to fatten pig feed without the low protein type of dregs of beans
CN106901011A (en) A kind of chitosan oligosaccharide pig starter feed
CN104322901A (en) Weaned piglet compound feed and preparation method thereof
CN107198024A (en) A kind of weanling pig feed and preparation method thereof
CN107996857A (en) A kind of liquid amino acid vitamine supplement for reducing weaning stress of piglet and preparation method and application
CN110292103A (en) A kind of live pig nonreactive feed and preparation method thereof
CN108771027A (en) A kind of selenium-rich pannage and method for breeding
CN104222624A (en) Vitamin premix for milk cow and preparation method of vitamin premix
CN110521880A (en) A kind of chick opening material and preparation method thereof and method for breeding chickling

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination