CN102326681A

CN102326681A - Low-protein amino acid balanced nursing sow feed

Info

Publication number: CN102326681A
Application number: CN201110196131A
Authority: CN
Inventors: 姜旭明; 黄河; 吕明斌
Original assignee: Shandong Liuhe Group Co Ltd
Current assignee: Weifang New Hope Liuhe Feed Technology Co ltd; China Agricultural University; New Hope Liuhe Co Ltd
Priority date: 2011-07-14
Filing date: 2011-07-14
Publication date: 2012-01-25
Anticipated expiration: 2031-07-14
Also published as: CN102326681B

Abstract

The invention discloses low-protein amino acid balanced nursing sow feed capable of reducing the environmental pollution, which comprises the following ingredients in portion by weight: 52.90 corn, 2.30 wheat flour middling, 13.30 wheat bran, 2.80 rice bran, 16.80 bean dreg of 46 percent, 4.30 rape-seed cake, 3.80 rape-seed oil, 0.97 calcium hydrophosphate, 1.24 stone dust, 0.40 salt, 0.16 lysine and 0.01 methionine. The feed has a scientific formula and is simple to produce. On the premise of being free from influencing the productivity of a sow, the environmental pollution can be reduced, the feed cost can be reduced, and economy can be realized.

Description

A kind of low-protein amino acid balance agent of feed for nursing sow

Technical field

The present invention relates to contain animal-breeding feed that derives from plant, animal or raw mineral materials and preparation method thereof, particularly a kind of low-protein amino acid balance agent of feed for nursing sow that reduces environmental pollution and preparation method thereof.

Background technology

Scale, intensification are the main trend of current domestic and international Swine Production, but incident piggery waste the like waste environmental pollution problem becomes increasingly conspicuous.Feng Dingyuan (2001) statistics shows that l pig on average produced 2.5 tons of fecalurias per year, just 30,000 tons of ambient defecation at least in one ten thousand pig farm every year, every day sewer 100-150 ton.

China's livestock breeding industry development is advanced by leaps and bounds.Past is to be main to raise the family scattered, and the commodity breeding production of the intensification of scale now in the highest flight.Building up of these intensifications, industrial aquaculture field improved breed efficient on the one hand, reduced production cost; The opposing party and, the fecal sewage that large-scale cultivation produces has also brought a series of environmental problem.Animal farm comprises that to the pollution of environment dust, noise and excrement are dirty, but mainly is that the pollution that atmosphere, water source and soil are caused is dealt with in the excrement dirt improperly.

The basic ideas of the piggery waste of China's solution at present are to adopt method of edge treatment, but this can not fundamentally complete contaminated solution problem.And often have expensive many, shortcomings such as regular maintenance difficulty.Therefore, there are many nutritionists to begin to pay attention to inquiring into how to reduce problem of environmental pollution from the nutrition angle.Nineteen ninety-five Yang Sheng professor at first propose in China ' condition nutrition " notion of (Ecological Nutrition), in the hope of reducing cost, when improving the livestock products quality, reduce pollution to environment.Under the situation that China's animal husbandry production scale constantly enlarges and the intensification degree improves constantly; Fully use nourishing regulate and control technique; Improve the utilization rate of animal to greatest extent to nutriment; Reduce the pollution of environment simultaneously, promote lasting, quick, the sound development of China's animal husbandry to have crucial meaning.Why pig manure urine causes serious pollution problem, considers to mainly contain the reason of several respects from the nutrition angle, and the ANFs in feedstuff, the feed, feed processing technology, interpolation exogenous protease or other enzymes improve protein utilization etc.Be that the raising plant recovery of nutrient is a principle with the reduction nutrient content in general.Take appropriate measures to these reasons and to alleviate the pollution that pig industry causes to environment.Can take corresponding measure to reduce diet nutrient density (mainly being nitrogen and phosphorus, especially nitrogen); Improve the diet plant recovery of nutrient.

By livestock and poultry ideal protein pattern, can digest amino acid and add synthesizing amino acid for the basis, be mixed with the balance diet that meets the raising poultry nutritive needs, can suitably reduce feed thick protein level and do not influence breeding performonce fo animals.This moment, feed conversion rate was the highest, and nutrient is drained minimum.Both protein resource can be saved, polluted by nitrogen can be reduced again.Nitrogen use efficiency has only 30% ~ 50% usually in the livestock and poultry diet, improve nitrogen use efficiency, must improve the diet amino acid balance.Under diet amino acid balance property good conditions, diet protein reduces by 2% pair of breeding performonce fo animals does not have obvious influence, and elimination of nitrogen amount 20% (Cormwell etc., 19%) that can descend.Use the same amino acid level and the diet of thick protein level low 4%, animal total nitrogen excretion reduction by 49% (P 0.01), and production performance uninfluenced (Han etc., 1995).The various countries scholar has attempted the low-protein diet through the preparation amino acid balance, with the discharge of minimizing nitrogen, and obtains good result (Goihl, 1995).Facts have proved,, can reduce diet protein level 2.5% by digesting amino acid and ideal protein mode computation and feed prepared; And production performance does not subtract; Under diet amino acid balance property good conditions, diet thick protein level reduces by 2% pair of breeding performonce fo animals does not have obvious influence, and can make the elimination of nitrogen amount reduce by 10% one 20% (Shi Jun; Chen Anguo, 2001).No matter piglet still in the growing swine stage, low-protein amino acid balance diet all can improve pig production performance and feed conversion rate, and can reduce fecal nitrogen discharge capacity (Chai Junxiu etc., 2007).Feng Dingyuan etc. (1996) research shows, in growing swine and growing and fattening pigs diet, adds amino acid, makes diet thick protein reduce by 1% simultaneously, and the pig weightening finish is uninfluenced, and nitrogen use efficiency increases, and the elimination of nitrogen amount reduces by 17.7% in its ight soil.Along with science and technology development, in the livestock and poultry diet, add lysine, methionine is fully accepted by the culturist, and threonine, tryptophan had begun already in feed, to use.Carter etc. (1996) report adds lysine, methionine, threonine and tryptophan in the growing-finishing pig diet, can reduce by 4% gross protein value, and significantly reduce by 34% elimination of nitrogen.Synthetic L one lysine is made an addition in the feed, and under the prerequisite that does not influence breeding performonce fo animals, the lysine in the alternative protein reduced gross protein value and feed cost with (Song Xian once waited, 2004).The research of Boza etc. (1995) shows, with little skin form during as nitrogenous source, and whole proteins deposited corresponding amino acid diet or the whole protein diet of being higher than.Serum urea nitrogen can more accurately reflect metabolism of animal body internal protein and amino acid balance situation, and when amino acid balance was good, blood serum urea nitrogen concentration descended.Therefore, in the livestock and poultry diet, use synthesizing amino acid, can improve the diet nitrogen use efficiency, reduce fecaluria nitrogen discharge rate, thereby practice thrift feed protein, reduce polluted by nitrogen.

So-called low-protein diet is meant with the high protein diet and compares, the diet that the diet that its protein level is lower, the high protein diet here are generally typical diet or prepare by a certain feeding standard.The low-protein diet is compared with the high protein diet, and the former limiting amino acid kind is more bigger with limited degree, the protein level (Huo Qiguang, 2004) of the satisfaction degree restriction low-protein diet of diet limiting amino acid.As far back as nineteen forty-four, Block and Bolhng must go out the to grow amino acid requirement of animal can be formed conclusion that to confirm by the amino acid of animal body protein.Afterwards, many scholars further discovered, only kept under the situation of balance at diet amino acid, and amino acid is tricky, and ' can be effectively utilized by the animal body, any amino acid starvation or excessive all can influence other amino acid whose utilization rates in the diet.Be that reasonable amino acid nutrition not only requires in the diet various essential amino acid A wide selection of colours and designs and content suitable; And require various must the acid of nitrogen base between and the ratio between essential amino acid and the nonessential amino acid and the needs of animal match Here it is so-called ideal protein.Its appearance is another great discovery on the Animal nutrition history.It originates from people at first and attempts forming the nutritive value of weighing protein with amino acid.Nineteen forty-six Mitchell and Block propose chemical score, and promptly first limiting amino acid and its desired contents are weighed the nutritive value of protein in the diet.This just needs a reference protein matter, and its amino acid is formed balance the most, so ideal protein occurred.The notion of ideal protein is proposed by Howard (1958) at first; Be called complete protein at that time; Its flesh and blood is that animal can maximally utilise the protein in the feed when the composition of various essential amino acids in the diet and ratio and animal essential amino acid requirement match.Goed deep into along with what proteinaceous nutrient was studied afterwards, people have proposed the notion of ideal protein, and its notion has been carried out modification and perfect.Cole (1980) thinks that ideal protein is meant various essential amino acids and supplies with the protein that has optimum balance between the nitrogenous source that synthesizes nonessential amino acid.Fuller (1989) thinks, the desirable amino acid formula of touching is that the standard of other diet protein of evaluation constitutes or with reference to protein.Because the nitrogen of essential amino acid can be used to synthetic nonessential amino acid, so containing the protein that exceeds the essential amino acid relevant with nonessential amino acid maybe

The same nitrogen retention that obtains.They are defined as ideal protein in view of the above: protein is made as a whole essential amino acid consumption minimum when obtaining peak use rate.The amount that the value of recognizing ng and Fulter (1990) are defined as each essential amino acid and nonessential amino acid with ideal protein is the equal restrictive diet protein of tool all.If a diet lacks one or more essential amino acids, then can change the speed of the deposition of protein through the essential amino acid that adds deficiency, lack nonessential amino acid in the diet, then add any amino acid and all can change nitrogen retention.From the definition of low-protein diet and the evolution of desirable amino acid pattern or ideal protein; The low-protein diet is exactly the application of desirable amino acid pattern in production reality; It is the minimum protein diet that as far as possible needs near desirable amino acid; Degree of closeness is near more, makes animal high more to the utilization ratio of protein.But there are a lot of problems in the low-protein diet.Nitrogen had accounted for 1/6 during the element of protein was formed, and the protein that reduces diet will reduce the excretion of nitrogen.The protein that reduces diet not only makes the discharge of nitrogen reduce, and energy loss is reduced.Excess protein whenever surpasses 1%, and that the availability of energy will be reduced will be about 1%, and this is that urea contains energy because nitrogen is discharged with form of urea.Simultaneously, when the protein that is not digested excretes, amount of drinking water is increased, and produce excessive heat, cause energy loss.

Noblet etc. (1987) research low-protein diet is during to the influencing of the growth of pig and energy deposition; Discovery is under the constant prerequisite of diet metabolizable energy; Low-protein diet group (protein 15.3%; Add lysine) compare with common thick protein diet group (protein 17.8%), the former deposits one 5.1% one 11.2% energy.Obviously, this and urine ability, the lost minimizing of body heat is relevant.Objectively, the low-protein diet has improved the net energy concentration of diet, has great importance for the energy concentration that improves low-yield diet.In the low-protein diet, expensive protein feeds reduces, and cheap energy feed increases.Suppose that diet thick protein level reduces by 1%, quite reduce dregs of beans consumption 23kg/t (CP0.43%), by conventional price, direct cost reduces by 50.6 yuan/t.With monomer lysine, methionine and threonine is raw material, and the deficiency of above-mentioned 3 kinds of essential amino acids that additional reduction by 1% thick protein brings needs 28.9 yuan/t by conventional price.The result: the diet protein level reduces by 1%, the feedstuff cost can reduce by 21.7 yuan/(t 1).So, reduced the diet cost when using the low-protein diet to reduce environmental pollution.

The problem that the low-protein diet exists but with the diet protein level fall low excessively, also can influence the production performance of animal.Though lot of test proves both at home and abroad; It is required that kind, ratio and the quantity of amino acid in the livestock and poultry diet (AA) if can satisfy animal; The diet protein level can reduce 2-4 percentage point; Livestock and poultry production performance is constant, and simultaneously, feed conversion rate, livestock and poultry nitrogen retention and nitrogen discharged, heat stress ability all make moderate progress.But, further reduce the diet protein level, in any case guarantee the needs of AA, the growth achievement of animal does not all reach desirable level, the trunk body fat content rises to some extent.Low albumen diet adds lysine, tryptophan, different bright nitronic acid, methionine with pick propylhomoserin and reach NRC (1988) standard, the growth achievement of low-protein diet group and feed conversion rate (FCR) are all organized (P < 0.01) not as normal CP as a result.Pig with 23kg is tested equally, and the result is with preceding once consistent.It is not good that proof pig low-protein diet production performance is also studied in (1987) such as (1980), Corley and Easter (1980) Russen such as shadra etc. (1976), Easter.Rusesu etc. (1986,1987) discover piglet, add synthesizing amino acid, reduce diet thick protein level, ' can obtain the speed of growth similar with control group when having only protein level reduction amplitude to be no more than 4 percentage points.If the growing swine diet protein level of body weight 3okg is reduced to 11% from 16%; Add synthetic lysine, threonine, tryptophan, pick propylhomoserin, methionine and glutamic acid; But raise though can obtain the weightening finish feed intake of same level, so feed conversion rate descends on the contrary.Feed conversion rate descends, and shows that the feed intake of increase possibly be mainly used in fat deposition rather than proteins deposited.So for the less demanding pig of lean meat percentage, a month consubstantiality quality possibly descend.Yu etc. (l991) also observe, and replenish lysine, threonine, tryptophan and methionine and also reduce by 5 percentage points in protein, and production performance and the rouge body fat content of pig shown negative effect.The low-protein diet that replenishes synthesizing amino acid reduces the reason of rouge body lean meat percentage, it be not immediately clear.Cormwell etc. (1996) research shows, reduce production performance the best that 4 percentage points in diet protein can make pig through replenishing synthesizing amino acid, but rouge body lean meat percentage reduces.Tuitock etc. (1997) find; Diet protein matter level reduces by 4 percentage points; And additional synthesizing amino acid (lysine, threonine, tryptophan, isoleucine and pick propylhomoserin) is to satisfy desirable amino acid ratio; The rouge body fat increase of then feeding this diet pig, daily gain and feed efficiency reduce.Kendan etc. (1998) in the growing swine diet, add synthetic lysine, tryptophan, threonine and methionine so that its protein level reduces to 12.2% from 16.7%, and production performance of pig and copper body quality also obviously descend.

Goihi (1999) thinks that this possibly be the higher cause of net energy content in the diet.Once the someone reported; Pig is when feeding the low-protein diet of additional synthesizing amino acid; Its plasma urea nitrogen concentration reduces, and this shows that this moment, pig reduced the needs that excessive amino acid carries out deaminizating, is a process that requires the expenditure of energy and amino acid is carried out deaminizating.In addition, after pig searches for food and replenishes the low-protein diet of synthesizing amino acid, the weight saving of pancreas, this activity that possibly show pancreas has reduced, and pig has also reduced the needs of energy.Therefore, just have more net energy to supply pig to utilize in the low-protein diet of additional synthesizing amino acid, the result has caused more fat deposition.To one of solution of this problem is to turn down diet net energy content, as adding fiber or reducing diet grease amount etc.Han and Baker (1992) research on poultry shows have 23% to reduce to 16% the diet protein level, no matter adds which kind of and any amount of synthesizing amino acid, all can not obtain the speed of growth and feed conversion rate when 23% protein level.No matter be that corn dilutes diet with the ratio of dregs of beans or with cornstarch in the adjustment diet, all obtain same result.With regard to this phenomenon, numerous scholars inquire into, and the theory of traditional " proteinaceous nutrient is exactly amino acid (AA) nutrition " is queried.

Low-protein amino acid balance diet has been widely used in the diet of piglet, store pig.Low-protein amino acid balance diet can improve the feed nutrient utilization rate, reduces feed cost.Many researchs show the content of thick protein in the diet that reduces piglet, store pig; Add synthesizing amino acid simultaneously to constitute the amino acid balance diet; Do not influence the growth performance of piglet and growth pig, can improve the utilization rate of N simultaneously, reduce the excretion of N.But in the lactating sow diet, using low-protein amino acid balance diet does not appear in the newspapers.

Summary of the invention

To above problem, the present invention carries out following 2 tests: 1. low-protein amino acid balance diet is to the influence of milking sow and piglet growth performance; 2. low-protein amino acid balance diet is to the influence of milking sow elimination of nitrogen amount.The present invention will sum up low-protein amino acid balance diet to the body weight of lactating sow sow, the influence of blood parameters; Influence to milking sow milk composition and piglet production performance; Influence to the nutrientuse efficiency of milking sow; To the influence of milking sow N utilization rate and discharge capacity, thereby a kind of low-protein amino acid balance diet agent of feed for nursing sow and preparation method are provided.

Description of drawings

Fig. 1 is the influence sketch mapes of different diets to piglet survival rate lactation.

The specific embodiment

One, low-protein amino acid balance diet is to the influence of milking sow production performance

Select parity 24 head lengths close with body condition white * Da Bai two-way cross multiparity sow (initial body weight 185 native 10kg), be divided into 4 groups at random, 6 every group, every sow feeds 12 piglets.Each organizes the sow CP that feeds respectively is 18%, 17%, 16%, 14% diet, 21 days lactations.Each item nutritive index is confirmed according to Chinese Pigs feeding standard (2004) recommendation in test diet (table 1), and the ratio of lysine, sulfur-containing amino acid, threonine, tryptophan, isoleucine, 6 kinds of essential amino acids of histidine and lysine meets the desirable amino acid pattern of NRC (1998) in 3 kinds low CP amino acid balance diets.

Table a diet is formed and trophic level

^aContain multivitamin (vitamin A, vitamin D, vitamin E, vitamin K, riboflavin, thiamine, vitamin B6, cobalamin, nicotinic acid, pantothenic acid, folic acid, biotin, choline) and mineral matter (iron, copper, violent, zinc, iodine, selenium) in the premix, the content in the full price diet satisfies Chinese Pigs feeding standard (2004).Concrete premix is that every kilogram of feed provides: vitamin A 5500IU, cholecalciferol 350IU, vitamin E 65mg, cobalamin 28 μ g; Prokeyvit 2mg, riboflavin 5.5mg, pantothenic acid 13.8mg, nicotinic acid 30mg; Choline 550mg, manganese 10mg, iron 100mg; Zinc 100 mg, copper 25mg, cobalt 1.0 mg and selenium 0.3 mg.

^bBe measured value.

Feeding and management and diet are formed

Before on-test, use earlier the flushing with clean water pig house, sterilizing with 2% NaOH in the back, sprays with 0.3% lysol dilution again.Sow freely drinks water at free choice feeding lactation.Piglet only ate breast milk in 21 days, freely drink water.Colony house keeps hygienically clean.In Farrowing 24h,, make every sow all feed 12 piglets through entrusting one's child to the care of sb. and mode such as nest is adjusted a piglet number.

Testing index and method

The milking sow feed intake: first day 1.8kg that feeds behind the Farrowing increases 1kg later every day, from the 4th day free choice feeding.Day is fed 4 times (6:00,12:00,18:00,23:00), uses the mode of adding on a small quantity more, and guaranteeing has clout in the groove.10:00 cleaning every day hopper once claims that clout is heavy.

Milking sow and piglet changes of weight are weighed to sow and nest piglet respectively at test ld and 21d, calculate gain in weight.

Piglet survival rate lactation: piglet number/nest produces the piglet number of living during lactation survival rate two wean.

Piglet nest lactation weightening finish: piglet is born and weighs on an empty stomach in back 6 hours, lets piglet weigh after hungry two hours during the Zld wean.

Piglet nest lactation weightening finish=weaning weight of litter one birth litter weight.

The breast index determining

Sow lactation the 21st day, measure and respectively organize sow Ruzhong protein, fat and non-fat solid content, ear vein oxytocin injection 6ml; After skilful minute, with little plastic cup respectively in the past, in, the nipple at back 3 positions respectively collects skilful ml, mixing; All breast appearance place one 20 ℃ of preservations, and are to be measured.Each sample is divided into three parallel appearance and carries out the analysis of each item index during mensuration.

Milk solid: adopt oven method (AOAC recommend method).

Butterfat: method (AOAC recommend method) in the Lodz-Gothic.

Lactoprotein: adopt the semimicro Kjeldahl.

Data

Test data (except that piglet survival rate lactation) all adopts average soil standard deviation to represent, and uses SPSS13.0 software to carry out one-way analysis of variance, and multiple ratio adopts the q method of inspection.Piglet survival rate lactation data do not have repetition values, therefore do not make significance test of difference.

Result and analysis

The different diets of table 1 are to the influence of food intake of sows in lactation, changes of weight

Annotate: with indicating different letter representation significant differences (p < 0.05) between the line data.

In 21 day lactation; Compare with the conventional protein level diet of CP18%; The amino acid balance diet of CP17% and CP16% does not increase sow body weight loss (P>0.05), and the amino acid balance diet of CP14% makes the sow body weight loss significantly increase (P < 0.05) (table 10).Four kinds of diets do not make significant difference (P>0.05) to the sow in lactation feed intake, but the amino acid balance diet of CP17% has the trend that improves the sow feed intake (P>0.05).

Can find out by Fig. 1; Compare with the conventional protein level diet of CP18%; The amino acid balance diet of CP17% can improve weaning period piglet survival ratio one percentage point; The amino acid balance diet of CP16% does not have influence to the weaning period piglet survival ratio, and the amino acid balance diet of CP14% makes the weaning period survival rate reduce one percentage point.

The different diets of table 2 are to the influence of weight gain of piglets

Figure 2011101961318100002DEST_PATH_IMAGE003

Annotate: different letter representation significant differences (P 0.05).

Can know that by table 2 the initial litter weight difference of piglet is (P>0.05) not significantly.With the conventional protein level diet of CP18% relatively, the amino acid balance diet of CP17% and CP16% is to piglet nest lactation increase heavy influence not significantly (P>0.05), and the amino acid balance diet of CP14% increases weight nest significantly to be lower than control group (P < 0.05).

The different diets of table 3 are to the influence of lactating sow milk composition

Annotate: different letter representation significant differences (P 0.05).

Can know by table 3, with the conventional protein level diet of CP18% relatively, the amino acid balance diet of CP17% and CP16% can improve thick protein in the milk composition and fatty content (P < 0.05), does not influence milk dry matter content.And the amino acid balance diet of CP14% reduction Ruzhong thick protein and crude fat content (P>0.05), dry matter content is not had influence.

This result of study shows, in keeping diet, can digest under the amino acid levels situation identical with ratio, suitably reduces the content of CP in the diet and can obtain and the identical production performance of high CP group.With conventional protein level (CP18%) relatively, the body weight loss that the CP level is reduced to 17% and 16% amino acid balance diet and do not influenced sows in lactation reduces and the weaned piglet nest increases weight.The nest weightening finish reduced when CP was reduced by 4 percentage points milking sow amino acid balance diet and makes weaned piglet.Ji etc. (2004) use 32 multiparity sows; The diet in 4 of feeding, comprising low-protein diet (CP17.5%), low-protein amino acid balance diet (CP17.5% ten amino acid); High protein diet (19.5%), high protein amino acid balance diet (CP19.5%+ amino acid).Result of study shows, amino acid balance diet group sow be significantly higher than control group with the wean nest weightening finish of piglet.Kim etc. (2004) are that research object has obtained same result of study with the first farrowing sow.In this research, CP is reduced by 4%, the weightening finish of weaned piglet nest is lower than other groups, and one of reason possibly descend relevant with pig Ruzhong CP, butter oil content.A concentrations of nutrient can be known from milk composition, compares with conventional protein level (cP18%), and the content of the amino acid balance diet group milk composition of CP17% and CP16% is best, and the amino acid balance diet group of CP14% has reduced the content of each nutrient in the milk composition.

Reduce CP1-2 percentage point amino acid balance diet, do not influence the body weight loss of milking sow feed intake and milking sow.The amino acid balance diet that reduces CP4 percentage point does not influence the feed intake of sow, but makes body weight loss increase lactation.Reduce CP1-2 percentage point amino acid balance diet, do not influence the weightening finish of weaned piglet nest.The amino acid balance diet that reduces CP4 percentage point reduces the weightening finish of weaned piglet nest.Low-protein amino acid balance diet is to the influence of milking sow Nutrients Digestion utilization rate and elimination of nitrogen amount.

In a word: reduce the amino acid balance diet of CP content in the diet, can practice thrift protein resource, reduce excrement N excretion.With lactating sow diet gross protein value by 18% reduce by 2 percentage points the amino acid balance diet can improve the production performance of lactating sow, but reduce by 4 percentage points then influential to production performance.The excretion of N reduces along with the reduction of thick protein level.Therefore can confirm that CP16% is an optimum addition.

Claims

1. low-protein amino acid balance agent of feed for nursing sow is characterized in that this feed is made up of following raw material:

50.6 ~ 52.90 parts of corns; 1.2 ~ 2.30 parts in inferior powder, 13.30 ~ 16.12 parts of wheat drums, 1.1 ~ 2.80 parts in rice bran, 16.80 ~ 20.8 parts of big dregs of beans; 2.5 ~ 4.30 parts of rape cakes, 3.80 ~ 4.0 parts of rapeseed oils, 0.96 ~ 0.97 part of calcium monohydrogen phosphate; 1.22 ~ 1.24 parts of stone flours, 0.40 part of salt, 0.09 ~ 0.16 part of lysine; 0.01 ~ 0.02 part of threonine, 0 ~ 0.01 part of methionine, 1.00 parts of premixes.

2. low-protein amino acid balance agent of feed for nursing sow according to claim 1 is characterized in that, the raw material of said feed is formed as follows:

52.90 parts of corns; 2.30 parts in inferior powder, 13.30 parts of wheat drums, 2.80 parts in rice bran, 16.80 parts of 46% dregs of beans, 4.30 parts of rape cakes; 3.80 parts of rapeseed oils, 0.97 part of calcium monohydrogen phosphate, 1.24 parts of stone flours, 0.40 part of salt; 0.16 part of lysine, 0.02 part of threonine, 0.01 part of methionine, 1.00 parts of premixes.

3. low-protein amino acid balance agent of feed for nursing sow according to claim 1 and 2 is characterized in that premix is the mixing of multivitamin and mineral matter.