CN114947015A - Lactation cow total mixed ration with aerobic stability improved by adding mixed fermented feed and preparation method thereof - Google Patents

Abstract

The invention relates to the technical field of animal feed, and discloses a lactation cow total mixed ration for improving aerobic stability by adding mixed fermentation feed and a preparation method thereof, wherein the total mixed ration comprises the following components in parts by mass: 85-95% of conventional TMR, 7-15% of mixed fermented feed and 0.5-1% of inhibitor, wherein the conventional TMR comprises the following components in parts by mass: 7-17% of forage grass, 20-35% of silage, 5-15% of protein feed, 10-25% of energy feed, 4-10% of food processing byproducts, 1-4% of beet pulp, 0.5-3% of molasses, 0.5-2.5% of premix and 14-20% of water.

Description

Lactation cow total mixed ration with aerobic stability improved by adding mixed fermented feed and preparation method thereof

Technical Field

The invention relates to the technical field of animal feed, in particular to a complete mixed ration for lactating cows, which is added with mixed fermented feed to improve aerobic stability, and a preparation method thereof.

Background

Total Mixed Ration (TMR) is a relatively balanced nutritional ration prepared by fully stirring and mixing roughage, concentrated feed and various additives by a TMR stirrer according to the nutritional requirements of different growth and development stages and different lactation stages of dairy cows, the freshly prepared TMR contains abundant carbohydrate, protein and other nutritional substances due to the mixing of various feed raw materials, and when the TMR is exposed to the air, aerobic microorganisms can decompose lactic acid, sugar and other soluble carbohydrate in the TMR to generate CO ₂ Meanwhile, substances such as protein, amino acid and the like are decomposed to generate a large amount of heat, and aerobic decay occurs, so that the generation of the TMR heating decay phenomenon needs to be reduced or delayed, and the aerobic stability of the TMR is improved (the aerobic stability refers to the capability of keeping fresh and unchangeable after fresh TMR is prepared and exposed to the air).

Chinese patent with application number 201010182024.5 discloses a forage grass type fermented total mixed ration for dairy cows and a preparation method thereof, wherein forage grass and forage crops are firstly cut into pieces, and energy feed is crushed; putting the raw materials into a total-mixed ration stirrer in the sequence of increasing the specific gravity from small to large for mixing; after the raw materials are uniformly mixed, wrapping the mixture by using a silage wrapping machine or filling the mixture into silage bags, vacuumizing, sealing, storing, fermenting for 3-4 weeks to obtain the forage grass type fermented total mixed ration for the dairy cows.

This fermented TMR compares with fresh TMR, fresh TMR just shows the phenomenon of the thermal spoilage that starts in 12 hours, and the temperature rise is very fast, 24 hours back fresh TMR surface the moldy phenomenon appears, and fermented TMR does not generate heat and moldy phenomenon all the time, fermented TMR has good aerobic stability than fresh TMR, but pasture need in time adjust the TMR prescription according to the different nutritional requirement of milk cow, and fermented TMR is because the preparation cycle is long, can't in time adjust the composition, be unfavorable for the growth and the lactation of milk cow, and the fermented TMR of the different prescriptions of deposit simultaneously not only can lead to the cost too high, and pasture is easy damaged rotten and leads to the waste in fermented TMR storage fermentation process.

Disclosure of Invention

The invention aims to provide the full mixed ration for the lactating cows, which is added with the mixed fermented feed to improve the aerobic stability, so that the aerobic stability of the fresh TMR is improved, the fresh TMR formula can be adjusted in time according to different nutritional requirements of the cows, the nutritional requirements of the cows are ensured, and the cost is reduced.

In order to solve the technical problem, the invention is solved by the following technical scheme: the total mixed ration for the lactating cows, which is added with the mixed fermented feed to improve the aerobic stability, comprises the following components in parts by mass: 85-95% of conventional TMR, 7-15% of mixed fermented feed and 0.5-1% of inhibitor, wherein the conventional TMR comprises the following components in parts by mass: 7-17% of forage grass, 20-35% of silage, 5-15% of protein feed, 10-25% of energy feed, 4-10% of food processing byproducts, 1-4% of beet pulp, 0.5-3% of molasses, 0.5-2.5% of premix and 14-20% of water.

By adopting the scheme, compared with the prior art that the fermented TMR cannot be adjusted in time due to long preparation period, and the cost is overhigh when the fermented TMR with different formulas is stored, and the fermented TMR is easy to damage and deteriorate in the storage process to cause waste, the fermented mixed fermented feed is mixed with the fresh conventional TMR, so that the mixed fermented feed has higher aerobic stability, the aerobic stability of the total mixed ration can be effectively improved only by adding a small amount of the mixed fermented feed through experiment, the storage time of the total mixed ration is prolonged, the total mixed ration cannot become hot and rot within 12 hours, the total mixed ration can be prepared twice in the morning and evening, the diet requirement of 24 hours all day can be met, each meal does not need to be prepared, the labor, machinery and material costs are reduced, and meanwhile, most of the total mixed ration is fresh conventional TMR, therefore, the nutrition requirements of the dairy cows in different stages can be ensured by adjusting the formula of the conventional TMR, and in addition, the proliferation of aerobic bacteria such as saccharomycetes, mould and the like is effectively inhibited by adding the inhibitor, so that the aerobic fermentation is inhibited, the mildewing and deterioration of the fully mixed daily ration and the loss of nutrient substances are slowed down, and the aerobic stability of the fully mixed daily ration is further improved.

Preferably, the mixed fermented feed is prepared by fermenting a fermentation substrate and a microbial inoculum, wherein the fermentation substrate comprises the following components in parts by mass: 20-35% of forage grass, 15-25% of silage, 5-15% of protein feed, 20-30% of energy feed, 5-10% of food processing byproducts, 1-3% of molasses, 10-20% of water, 38-42% of water content of fermentation substrate, and the mass ratio of microbial inoculum to fermentation substrate is 0.2: 500000-5: 500000.

adopt above-mentioned scheme, carry out reasonable match with different feed ingredient, constitute the mixed fermentation feed that is fit for the microbial fermentation, add the microbial inoculum and carry out anaerobic fermentation and handle, the fermentation process can produce some trace substance and restrain aerobic microorganism's activity, thereby can effectively improve the aerobic stability of final fermentation product, through carrying out ratio fermentation to different feed ingredient, the raw materials ratio that can improve the aerobic stability of fermentation substrate is selected according to experiment inclinability and is fermented preparation mixed fermentation feed, the interpolation of molasses increases the sugar content, can produce acetic acid under the decomposition of lactobacillus buchneri, further promote the inhibitory action to aerobic microorganism.

Preferably, the forage grass comprises at least one of alfalfa, oat grass, fresh rice straw.

By adopting the scheme, the raw materials are selected and combined from alfalfa, oat grass and fresh rice straw, so that the method is beneficial to nutrition balance and microbial fermentation.

Preferably, the protein feed comprises at least one of soybean meal, cotton seed, rapeseed meal and expanded soybean.

By adopting the scheme, the contents of protein and crude fiber in the total mixed ration can be ensured.

Preferably, the energy feed comprises at least one of corn, sorghum, defatted rice bran, and fat powder.

By adopting the scheme, the nutritional ingredients such as carbohydrate in the total mixed ration can be ensured.

Preferably, the food processing by-product comprises at least one of brewer's grains and green tea beverage residues.

By adopting the scheme, the amino acid and the trace elements in the total mixed ration can be ensured.

Preferably, the inhibitor comprises the following components in parts by mass: 40-60% of acetic acid, 20-40% of propionic acid and 10-25% of lactic acid.

By adopting the scheme, the inhibitor formed by the formula has the advantages of easily available raw materials, low cost and simple preparation method, can obviously inhibit the activity of aerobic bacteria, reduces the putrefaction of fresh TMR and the secondary fermentation of fermented TMR, protects the quality of the total mixed ration, and improves the aerobic stability of the total mixed ration.

The second purpose of the invention is to provide a preparation method of the mixed fermented feed, which comprises the following steps: the method comprises the following steps:

the method comprises the following steps: according to the formula, the forage grass and the silage in the fermentation substrate are put into a TMR mixer for cutting and mixing evenly, and the protein feed and the energy feed in the fermentation substrate are crushed and sieved and then are added into the TMR mixer together with the food processing byproduct and the molasses for mixing evenly;

step two: adding water and a microbial inoculum into a TMR stirrer, uniformly mixing to form a product to be fermented, and adjusting the water content of the raw materials to 38-42% in the mixing process;

step three: wrapping the product to be fermented with a stretch film, and fermenting for 30-40 days to obtain the mixed fermented feed fermented by the microorganisms.

By adopting the scheme, the aerobic stability of the mixed fermented feed determines the aerobic stability of the total mixed ration, so that the reduction or delay of the secondary fermentation of the mixed fermented feed is crucial, and many factors influencing the aerobic stability exist, and the mixed fermented feed mainly comprises the types of microorganisms, the proportion of the microorganisms to a substrate, the water content, the pH value and the like.

The third purpose of the invention is to provide a preparation method of the total mixed ration, which comprises the following steps: the method comprises the following steps:

the method comprises the following steps: according to the formula, the forage grass and the silage are put into a TMR mixer to be cut and mixed uniformly to form a coarse material mixture;

step two: according to the formula, protein feed and energy feed are crushed and sieved and then mixed with premix to form concentrated feed mixture;

step three: mixing the coarse material mixture, beet pulp, fine material mixture, molasses and food processing by-products, adding water, and mixing to obtain conventional TMR;

step four: weighing the mixed fermented feed according to the formula, adding the mixed fermented feed into the conventional TMR, and fully stirring and mixing the mixed fermented feed in a TMR stirrer;

step five: adding inhibitor, stirring and mixing to form the total mixed ration.

By adopting the scheme, the mixed fermented feed is prepared in advance, the raw material proportion is adjusted according to the nutritional requirements of the dairy cows on the day of feeding, the thicker raw materials are cut or crushed, the uniform mixing of the raw materials is facilitated, the molasses and the premix are added to further improve the nutrition of the conventional TMR, the premix consists of macroelements, microelements, vitamins and a carrier, wherein the vitamins mainly comprise vitamin A, vitamin D and vitamin E; macroelements mainly comprise calcium, sodium and magnesium; the trace elements mainly comprise Zn, Mn, Cu, Fe, Co, I and Se, the raw materials are uniformly mixed to form a conventional TMR, then the conventional TMR is added into the mixed fermented feed to be fully stirred and mixed, an inhibitor is added to inhibit the activity of mixed bacteria, the mixed total mixed daily ration is taken out from a TMR stirrer and then stored in a material storage bin, and the mixed total mixed daily ration is taken out when needing to be fed.

Due to the adoption of the technical scheme, the invention has the remarkable technical effects that: the fermented mixed fermented feed is mixed with the fresh conventional TMR, and only a small amount of the mixed fermented feed is needed to be added, so that the aerobic stability of the total mixed ration can be effectively improved, the storage time of the total mixed ration is prolonged, the full mixed ration can not become hot and rotten within 12 hours, only the full mixed ration is prepared twice in the morning and evening, can meet the diet requirement of 24 hours all day without the need of allocating every meal, reduces the cost of manpower, machinery and materials, at the same time, most of the total mixed ration is fresh conventional TMR, so the formula of the conventional TMR is adjusted, can ensure the nutritional requirements of the dairy cows in different stages, in addition, the proliferation of aerobic bacteria such as saccharomycetes, mycete and the like is effectively inhibited by adding the inhibitor, thereby inhibiting aerobic fermentation, slowing down the mildewing and deterioration of the total mixed ration and the loss of nutrient substances, and further improving the aerobic stability of the total mixed ration.

Drawings

FIG. 1 is a graph comparing aerobic stability monitoring of a total mixed ration supplemented with mixed fermented feed of example 2 with a conventional total mixed ration;

FIG. 2 is a graph comparing the aerobic stability monitoring of the total mixed ration with the conventional total mixed ration of one of the mixed fermented feeds of example 3.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Example 1

A mixed fermented feed and a preparation method thereof, wherein fermentation substrates are selected from alfalfa, oat grass, fresh rice straw, corn silage, soybean meal, corn, defatted rice bran, brewer's grains, molasses and water, the mixed feeds are mixed according to a feed formula shown in a table 1, a microbial inoculum is added in the mixing process, and the mass ratio of the microbial inoculum to the fermentation substrates is 0.2: 500000-5: 500000 and the water content was adjusted to 38% -42% during the mixing process, and the mass required for each component was calculated in this example as an example of producing 4 tons of mixed fermented feed and is reported in table 1.

TABLE 1 composition table of mixed fermented feed raw materials

The preparation method comprises the following steps:

preparation of the inhibitor: mixing acetic acid, propionic acid and lactic acid to form an inhibitor, and storing in a sealed manner;

preparing a mixed fermented feed: cutting herba Medicaginis, herba Avenae Fatuae, fresh rice straw and corn silage, and controlling length10-30 mm, pulverizing soybean meal, semen Maydis and defatted testa oryzae, and sieving; before formal production, a machine is overhauled to ensure that the machine operates normally, fresh raw materials are used for washing a bin to prevent mildew residues from entering a product, the feeding process is automatically completed by a mixed feed production system according to a table 1, the system automatically distributes each raw material stirring bin to output corresponding amount of raw materials to the stirring bins according to the sequence of forage grass, silage, protein feed, energy feed, food processing byproducts and molasses, after all the feed raw materials except water are added, the microbial inoculum and the water are uniformly mixed and then added into the stirring bins, the mixture is continuously stirred for 5-8 min with other raw materials, and the water content is controlled to be 38% -42% in the mixing process; all the raw materials are immediately transferred into a wrapping machine bin after being stirred, high-density compression molding is carried out, and the film wrapping is finished, wherein the density is 500kg/m ³ The tensile membrane is 6 layers, after the membrane coating is finished, the wrapping machine clamps the wrapping membrane to an outdoor flat place without sharp foreign matters for stacking, and the mixed fermented feed is obtained after 30-40 days of fermentation, and the experiment is repeated for 3 times in the embodiment.

Based on reasonable modulation and quality evaluation standards of silage of Liujiangxin and the like (1999), sensory evaluation results show that the mixed fermented feed is yellow in color, strong in acid fragrance and taste, free of mildew and caking of materials, nutritional index analysis results are shown in a table 2, the pH of a final product after fermentation is stable is about 4.1, and the contents of dry matters, NDF, ADF and starch of the product reach expected targets.

TABLE 2 nutrient composition table of mixed fermented feed

Example 2

A lactating cattle total mixed ration for improving aerobic stability by adding the mixed fermented feed in the embodiment 1 and a preparation method thereof are disclosed, wherein the conventional TMR is prepared by mixing alfalfa, oat grass, silage, rapeseed meal, soybean meal, corn, brewer's grains, beet meal, premix, molasses and water according to a feed formula shown in a table 3; the total mixed ration is prepared by adding mixed fermented feed and inhibitor into conventional TMR, the specific formula is recorded in table 3, in the embodiment, 225 cows are respectively arranged in two experimental groups, feeding monitoring of two groups of cows for 30 days shows that after 20 days of TMR adaptation period, the data related to average feed intake and milk yield of two groups of cows after 10 days are recorded, and the aerobic stability of the two groups of TMR is monitored simultaneously, wherein the nutrition of the cow ration formula in the feeding test needs standard reference NRC (2001), and the formula is formulated by combining with cow CPM formula software.

TABLE 3 complete mixed ration formulation of conventional TMR and additive mixed fermented feed

The preparation method comprises the following steps:

preparation of conventional TMR: the method comprises the steps of sequentially putting alfalfa grass, oat grass and silage into a TMR mixer to be cut and mixed uniformly to form a coarse material mixture, controlling the length to be 10-30 mm, crushing corn, bean pulp and rapeseed meal, sieving the crushed corn, bean pulp and rapeseed meal to form a fine material mixture, firstly overhauling a machine before formal production to ensure normal operation of the machine and ensure that a TMR stirring bin is clean and tidy, then putting the raw materials into the TMR stirring bin according to the sequence of the coarse material mixture, the beet meal, food processing byproducts, the fine material mixture, molasses and water in the feeding process, making the raw materials into a conventional TMR after stirring, taking out the conventional TMR, and putting the conventional TMR into a hair material storage bin for feeding livestock.

Preparing a total mixed ration added with the mixed fermented feed: the method comprises the steps of sequentially putting alfalfa grass, oat grass and silage into a TMR (total mixed ration) mixer to be cut and mixed uniformly to form a coarse material mixture, controlling the length to be 10-30 mm, crushing corn, bean pulp and rapeseed meal, sieving the crushed corn, bean pulp and rapeseed meal to form a fine material mixture, examining and repairing a machine before formal production to ensure that the machine operates normally and ensure that a TMR stirring bin is clean and tidy, putting the raw materials into the TMR stirring bin according to the sequence of the coarse material mixture, the beet pulp, food processing byproducts, the fine material mixture, mixed fermented feed, molasses and water in the feeding process, uniformly stirring after all feed raw materials except the inhibitor are added, then adding the inhibitor into the TMR stirring bin, stirring and mixing uniformly again to prepare the fully-mixed daily ration added with the mixed fermented feed, taking out and storing the fully-mixed daily ration in the hair storage bin for feeding livestock.

Preparation of the inhibitor: mixing acetic acid, propionic acid and lactic acid to form inhibitor, and storing under sealed condition.

After the mixed fermentation feed group TMR is used, the 10-balance dry matter intake and milk yield are respectively 20.30 kg/day and 24.46 kg/day, after the mixed fermentation feed group TMR is used, the 10-balance dry matter intake and milk yield are respectively 20.30 kg/day and 24.88 kg/day, no obvious difference exists in the aspects of the intake and the yield of the two groups of cattle, then the mixed fermentation feed group TMR and the TMR containing the mixed fermentation feed are used for carrying out TMR aerobic stability monitoring, the monitoring and analyzing result is shown in figure 1, the stability of the TMR prepared by the mixed fermentation feed is superior to that of the conventional TMR daily feed group within 12h, the fermentation degree of the TMR containing the mixed fermentation feed group by environmental microorganisms is slight when the TMR is stacked to 12h, and the monitoring temperature is 33.3 ℃; the fermentation degree of the conventional TMR in a pasture by environmental microorganisms is high, the monitoring temperature is 49.8 ℃, compared with a TMR group containing mixed fermented feed, the temperature is 16.5 ℃ higher, the TMR daily ration prepared by using the mixed fermented feed has better aerobic stability, and the phenomena of TMR deterioration and heating, poor palatability, reduced nutritional value and the like caused by the decomposition and utilization of the TMR by the environmental microorganisms can be effectively relieved.

Example 3

Compared with the example 2, cattle groups with different nutritional requirements and formulas with different raw material proportions are selected, namely the formula of the conventional TMR is changed, the conventional TMR selects American alfalfa, Spanish alfalfa, oat grass, whole silage, soybean meal, puffed soybean, whole cottonseed, pressed corn, fat powder, green tea beverage residue, beet pulp, premix, molasses and water, and is mixed according to the feed formula shown in the table 4; the total mixed ration is prepared by adding mixed fermented feed and inhibitor into conventional TMR, the specific formula is recorded in Table 4, in the embodiment, 200 cows are respectively arranged in two experimental groups, feeding monitoring of 57 days of the two groups of cows shows that after 50 days of TMR adaptation period, the relevant data of average feed intake and milk yield of the two groups of cows after 7 days are recorded, and the aerobic stability of the two groups of TMR is monitored simultaneously.

TABLE 4 composition of conventional TMR and Total Mixed diet formulation with Mixed fermented feed

The preparation method comprises the following steps:

the specific preparation method of the conventional TMR, the total mixed ration added with the mixed fermented feed and the inhibitor is the same as that of example 2, and the details are not repeated herein.

After the conventional TMR group in the pasture, the feed intake and milk yield of 7-balance dry matter are respectively 25.20 kg/day and 31.76 kg/day, after the TMR group in the mixed fermented feed group, the feed intake and milk yield of 7-balance dry matter are respectively 25.10 kg/day and 31.45 kg/day, no obvious difference exists in the feed intake and yield of the two groups of cattle, then the conventional TMR in the pasture and the TMR containing the mixed fermented material are taken to carry out TMR aerobic stability monitoring, the monitoring and analyzing result is shown in figure 2, the stability of the TMR prepared by the mixed fermented feed is superior to that of the conventional TMR group in 12h, the fermentation degree of the TMR containing the mixed fermented material group by environmental microorganisms is slight when the TMR is stacked to 12h, and the monitoring temperature is 29.8 ℃; the fermentation degree of the conventional TMR in a pasture by environmental microorganisms is more severe, the monitoring temperature is 40.3 ℃, compared with a TMR group containing mixed fermented feed, the temperature is 10.5 ℃ higher, the TMR daily ration prepared by using the mixed fermented feed has better aerobic stability, and the phenomena of TMR deterioration and heating, poor palatability, reduced nutritional value and the like caused by the decomposition and utilization of the TMR by the environmental microorganisms can be effectively relieved.

By combining the experimental data of the embodiment 2 and the embodiment 3, it can be known that after the formula of the conventional TMR is adjusted according to the requirements of the dairy cows, a small amount of mixed fermented feed is added into the formula, so that the feed intake and the milk yield of the flocks are not influenced, and therefore, the formula of the TMR containing the mixed fermented feed can be adjusted in time according to different nutritional requirements of the dairy cows, so that the nutritional requirements of the dairy cows are ensured and the cost is reduced; and the TMR added with the mixed fermented feed greatly improves the aerobic stability of the TMR, prolongs the storage time of the total mixed ration, does not become hot and rot in 12 hours, only needs to prepare the total mixed ration twice in the morning and evening, can meet the diet requirement of 24 hours all day, does not need to be prepared for each meal, and reduces the manpower, machinery and material cost.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A lactation cow total mixed ration for improving aerobic stability by adding mixed fermented feed is characterized in that: the total mixed daily ration comprises the following components in parts by mass: 85-95% of conventional TMR, 7-15% of mixed fermented feed and 0.5-1% of inhibitor, wherein the conventional TMR comprises the following components in parts by mass: 7-17% of forage grass, 20-35% of silage, 5-15% of protein feed, 10-25% of energy feed, 4-10% of food processing byproducts, 1-4% of beet pulp, 0.5-3% of molasses, 0.5-2.5% of premix and 14-20% of water.

2. The total mixed ration for lactating cows for improving aerobic stability by adding mixed fermented feed according to claim 1, wherein: the mixed fermented feed is prepared by fermenting a fermentation substrate and a microbial inoculum, wherein the fermentation substrate comprises the following components in parts by mass: 20-35% of forage grass, 15-25% of silage, 5-15% of protein feed, 20-30% of energy feed, 5-10% of food processing byproducts, 1-3% of molasses, 10-20% of water, 38-42% of water content of fermentation substrate, and the mass ratio of microbial inoculum to fermentation substrate is 0.2: 500000-5: 500000.

3. the total mixed ration for lactating cows for improving aerobic stability by adding mixed fermented feed according to claim 2, wherein: the forage grass comprises at least one of alfalfa, oat grass, and fresh rice straw.

4. The total mixed ration for lactating cows for improving aerobic stability by adding mixed fermented feed according to claim 2, wherein: the protein feed comprises at least one of soybean meal, cotton seed, rapeseed meal and puffed soybean.

5. The whole mixed ration for lactating cows for improving aerobic stability by adding mixed fermented feed according to claim 2, wherein: the energy feed comprises at least one of corn, sorghum, defatted rice bran, and fat powder.

6. The total mixed ration for lactating cows for improving aerobic stability by adding mixed fermented feed according to claim 2, wherein: the food processing byproduct comprises at least one of brewer's grains and green tea beverage residues.

7. The total mixed ration for lactating cows for improving aerobic stability by adding mixed fermented feed according to claim 1, wherein: the inhibitor comprises the following components in parts by mass: 40-60% of acetic acid, 20-40% of propionic acid and 10-25% of lactic acid.

8. A method of preparing the mixed fermented feed according to any one of claims 2 to 7, characterized in that: the method comprises the following steps:

the method comprises the following steps: according to the formula, forage grass and silage in a fermentation substrate are put into a TMR mixer for cutting and mixing uniformly, and protein feed and energy feed in the fermentation substrate are crushed and sieved and then added into the TMR mixer together with food processing byproducts and molasses for mixing uniformly;

step two: adding water and a microbial inoculum into a TMR stirrer, uniformly mixing to form a product to be fermented, and adjusting the water content of the raw materials to 38-42% in the mixing process;

step three: wrapping the product to be fermented with a stretch film, and fermenting for 30-40 days to obtain the mixed fermented feed fermented by the microorganisms.

9. A method of preparing a total blended ration according to any one of claims 1 to 7: the method is characterized in that: the method comprises the following steps:

the method comprises the following steps: according to the formula, the forage grass and the silage are put into a TMR mixer to be cut and mixed uniformly to form a coarse material mixture;

step two: according to the formula, protein feed and energy feed are crushed and sieved and then mixed with premix to form concentrated feed mixture;

step three: mixing the coarse material mixture, beet pulp, fine material mixture, molasses and food processing by-products, adding water, and mixing to obtain conventional TMR;

step four: weighing the mixed fermented feed according to the formula, adding the mixed fermented feed into the conventional TMR, and fully stirring and mixing the mixed fermented feed in a TMR stirrer;

step five: adding inhibitor, stirring and mixing to form the total mixed ration.

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