Dandelion tea for treating milk distension of dairy cow as well as preparation method and application of dandelion tea

Abstract

The invention belongs to the technical field of animal feed additives, and particularly relates to dandelion tea for treating milk distension of dairy cows as well as a preparation method and application of the dandelion tea. The dandelion tea is prepared from the following raw materials in parts by weight: 5-40 parts of dandelion, 15-20 parts of honeysuckle, 10-15 parts of luffa cake, 5-10 parts of ligusticum wallichii, 8-15 parts of cowherb seed, 15-20 parts of fructus forsythiae and 5-20 parts of tetrapanax papyriferus. According to the invention, dandelion is taken as a monarch drug, cowherb seed and tetrapanax papyriferus are taken as ministerial drugs, honeysuckle, ligusticum wallichii and fructus forsythiae are taken as adjuvant drugs, and towel gourd is taken as a conductant drug. The raw materials are cooperated to obviously reduce the morbidity of milk distension of dairy cows before menstruation, and the composition has good prevention and treatment effects on milk distension of dairy cows, and is safe, free of toxic and side effects and free of harmful drug residues.

Description

Technical Field

[0001] The invention belongs to the technical field of animal feed additives, and particularly relates to dandelion tea for treating breast engorgement in dairy cows, and a preparation method and application thereof. Background Art

[0002] In the dairy farming industry, breast pain (breast engorgement) is a common problem that has a significant impact on farming benefits. With the scale and intensive development of animal husbandry, the incidence of breast diseases in dairy cows is on the rise. Breast pain can be caused by a variety of factors, including microbial infection, milk stasis, trauma, etc., which not only leads to a decrease in milk production in dairy cows, but in severe cases can also cause more serious diseases such as mastitis, and even threaten the lives of dairy cows, causing economic losses to farmers.

[0003] At present, existing therapeutic drugs have limitations: Traditionally, antibiotics are commonly used drugs for treating diseases related to breast pain in dairy cows. However, there are many disadvantages to the long-term and irrational use of antibiotics. On the one hand, antibiotics may lead to the production of drug-resistant bacteria, making subsequent treatment more difficult. On the other hand, antibiotics remain in livestock products (such as milk), posing a potential threat to consumer health and also affecting the competitiveness of dairy products in the market. In addition, although some chemical drugs have a certain effect in relieving symptoms, they may have side effects and affect the overall health and milk production of dairy cows. In addition, although physical therapy (such as hot compresses, massage, etc.) is relatively safe, it often has limited effects and cannot fundamentally solve the problem, especially for breast pain caused by inflammation.

[0004] As a traditional medicinal plant, dandelion has the effects of clearing away heat and detoxifying, reducing swelling and dispersing nodules. In the veterinary field, dandelion has also gradually attracted attention. Studies have shown that dandelion contains a variety of active ingredients, such as taraxasterol, choline, organic acids, inulin, etc. These ingredients have anti-inflammatory, antibacterial, and antioxidant effects. However, the pharmacological effect of dandelion as a single active ingredient is limited and cannot effectively meet the needs of treating breast pain in dairy cattle farming. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a dandelion tea for treating breast engorgement in dairy cows, and a preparation method and application thereof.

[0006] In order to achieve the above object, the technical solution provided by the present invention is:

[0007] The first aspect of the present invention provides a dandelion tea for treating breast engorgement in dairy cows, which is prepared from the following raw materials by weight: 5-40 parts of dandelions, 15-20 parts of honeysuckle, 10-15 parts of loofah, 5-10 parts of chuanxiong, 8-15 parts of fenugreek, 15-20 parts of forsythia, and 5-20 parts of tongcao.

[0008] The effects of the Chinese herbal medicine raw materials used in the product of the present invention are as follows:

[0009] Dandelion is the whole herb with roots of Taraxacum mongolicum Hand.-Mazz. of the Asteraceae family. It has the effects of clearing away heat, cooling blood, reducing swelling and detoxifying. It is mainly used to treat sore throats, swollen udders, and lack of milk in livestock.

[0010] Honeysuckle is the flower bud of Lonicera japonica Thunb. of the Caprifoliaceae family. It has the effects of clearing away heat and detoxifying, dispelling wind and removing evil. It is mainly used to treat lung heat cough, breast pain, yellow and swollen skin, and back sores of cattle and horses.

[0011] Luffa lao is the dried mature fruit of Luffa aegyptiaca Mill. It has the effects of moisturizing the skin, removing spots, dispelling wind and unblocking meridians, promoting blood circulation and removing blood stasis. It is mainly used to treat amenorrhea, dysmenorrhea and milk blockage.

[0012] Chuanxiong is the rhizome of the cultivated plant Ligusticum sinense'Chuanxiong' of the Apiaceae family. It has the effects of promoting qi and relieving depression, dispelling wind and drying dampness. It is mainly used to resolve phlegm, improve eyesight, discharge pus, and stroke.

[0013] Vaccaria is the seed of Gypsophila vaccaria (L.) Sm., a plant of the Caryophyllaceae family. It promotes blood circulation and dredges the collaterals, and promotes lactation. It is used for amenorrhea, dysmenorrhea, milk retention, breast abscess, swelling and pain, and painful stranguria.

[0014] Forsythia suspensa (Thunb.) Vahl is a plant of the genus Forsythia in the family Oleaceae. It has the effects of clearing away heat and detoxifying, reducing swelling and dispersing nodules. It is mainly used to treat acute wind-heat cold, lymph node tuberculosis, etc.

[0015] Tongcao is the stem and pith of Tetrapanax papyrifer (Hook.) K. Koch, a plant of the Araliaceae family. It has the effects of diuresis, lactation, lung purgation and laxative. It is mainly used to treat postpartum milk deficiency and dribbling urine in livestock.

[0016] The compatibility relationship of the Chinese herbal medicine raw materials of the present invention is:

[0017] The invention uses dandelion as the main drug, fenugreek and tongcao as the ministerial drugs, honeysuckle, chuanxiong and forsythia as the adjuvant drugs, and luffa lao as the guiding drug. After the raw materials are matched, the therapeutic effect on breast pain of dairy cows is significantly better than the treatment lacking the ministerial drug ingredient fenugreek, the adjuvant drug ingredient honeysuckle, the guiding drug ingredient luffa lao, and the treatment lacking fenugreek, honeysuckle and luffa lao at the same time.

[0018] The second aspect of the present invention provides a method for preparing dandelion tea, comprising the following steps:

[0019] Weigh 5-40 parts of dried dandelion, 15-20 parts of honeysuckle, 10-15 parts of luffa lao, 5-10 parts of chuanxiong, 8-15 parts of fenugreek, 15-20 parts of forsythia, and 5-20 parts of tongcao, grind and mix the raw materials to obtain the dandelion tea.

[0020] Preferably, the pulverization is to sterilize the various raw materials and mix them evenly, then pulverize them after drying and pass through an 8-mesh sieve.

[0021] It should be noted that the above preparation method is only one of the preparation methods when the dandelion tea of ​​the present invention is used as a feed additive, but the dandelion tea of ​​the present invention is not limited to this preparation method, and the specific types of methods that can be used in the art and accepted by specific dairy cows can be used as the basis for preparation. For example, the above raw materials are first soaked in water for more than 30 minutes, and the amount of water added is generally enough to soak the medicine surface by 2-5 cm, and then boiled for 30 minutes, and then boiled for 15-20 minutes.

[0022] During preparation, other suitable materials, such as conventional preservatives (annonaceous alkaloids), digestive aids, etc., may also be added to the dandelion tea according to actual conditions, such as considering the medicinal properties and other requirements.

[0023] The third aspect of the present invention provides the use of the dandelion tea as a feed additive for dairy cows, wherein the feed additive is used to treat breast engorgement in dairy cows.

[0024] Furthermore, the feed additive is used to inhibit the decreased liver synthetic function of dairy cows suffering from bloating.

[0025] Furthermore, the decreased liver synthetic function is reflected in decreased serum albumin levels.

[0026] Furthermore, the feed additive is used to inhibit the weakening of protein metabolism ability of dairy cows suffering from breast bloating.

[0027] Furthermore, the reduced protein metabolism capacity is reflected in low urea levels in serum.

[0028] Furthermore, the dandelion tea is used to inhibit the reduction of blood sugar levels in dairy cows suffering from bloating.

[0029] Furthermore, the feed additive is used to increase the milk production of dairy cows suffering from breast engorgement.

[0030] Furthermore, the feed additive is used to improve the immune defense ability of dairy cows suffering from breast bloating.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] In the dandelion tea provided by the invention, each raw material has no drug antagonism limitation, can significantly reduce the incidence of premenstrual breast swelling in dairy cows, and has a good preventive and therapeutic effect on breast swelling in dairy cows, is safe, has no toxic side effects, and has no harmful drug residues.

[0033] When the dandelion tea provided by the present invention is used as a feed additive, the feeding method is simple, no additional feeding requirement is required, the price is economical and affordable, and the dandelion tea can be added to the diet for a long time.

[0034] Directions: Each time you feed, weigh 56 grams of dandelion tea for every 1200 ml of boiling water, simmer for 15 minutes, mix with feed and then feed. Feed once a day during breast engorgement, 10 days as a course of treatment. During prevention, feed once every other day or reduce the daily dose by half. DETAILED DESCRIPTION

[0035] The present invention is described in detail below in conjunction with specific examples, but it should not be construed as limiting the present invention. Unless otherwise specified, the technical means used in the following examples are conventional means well known to those skilled in the art, and the materials, reagents, etc. used in the following examples, unless otherwise specified, can be obtained from commercial sources.

[0036] Example 1

[0037] A dandelion tea for treating breast engorgement in dairy cows is prepared from the following raw materials: 25g of dandelion, 15g of honeysuckle, 10g of loofah, 5g of chuanxiong, 8g of fenugreek, 20g of forsythia and 5g of tongcao.

[0038] Example 2

[0039] A dandelion tea for treating breast engorgement in dairy cows is prepared from the following raw materials: 5g of dandelion, 15g of honeysuckle, 10g of loofah, 5g of chuanxiong, 25g of fenugreek, 20g of forsythia and 5g of tongcao.

[0040] Example 3

[0041] A dandelion tea for treating breast engorgement in dairy cows is prepared from the following raw materials: 40g of dandelion, 15g of honeysuckle, 10g of loofah, 5g of chuanxiong, 8g of fenugreek, 5g of forsythia, and 5g of tongcao.

[0042] Comparative Example 1 (lacking the adjuvant ingredient - Vaccaria segetalis group)

[0043] A dandelion tea for treating breast engorgement in dairy cows is prepared from the following raw materials: 25g of dandelion, 15g of honeysuckle, 10g of loofah, 5g of chuanxiong, 20g of forsythia and 5g of tongcao.

[0044] Comparative Example 2 (lack of adjuvant component - honeysuckle group)

[0045] A dandelion tea for treating breast engorgement in dairy cows is prepared from the following raw materials: 25g of dandelion, 10g of loofah, 5g of chuanxiong, 8g of fenugreek, 20g of forsythia and 5g of tongcao.

[0046] Comparative Example 3 (luffa lao group lacking the drug ingredient)

[0047] A dandelion tea for treating breast engorgement in dairy cows is prepared from the following raw materials: 25g of dandelion, 15g of honeysuckle, 5g of chuanxiong, 8g of fenugreek, 20g of forsythia and 5g of tongcao.

[0048] Comparative Example 4 (lacking Vaccaria segetalis, honeysuckle and luffa lao group at the same time)

[0049] A dandelion tea for treating breast engorgement in dairy cows is prepared from the following raw materials: 25g of dandelion, 15g of honeysuckle, 5g of chuanxiong, 8g of fenugreek, 20g of forsythia and 5g of tongcao.

[0050] The purpose of comparative example 1 is to test the therapeutic effect of breast engorgement in dairy cows in the absence of the adjuvant ingredient Vaccaria segetalis.

[0051] The purpose of comparative example 2 is to test the therapeutic effect on breast engorgement in dairy cows in the absence of the adjuvant ingredient honeysuckle.

[0052] The purpose of comparative example 3 is to test the therapeutic effect on breast engorgement in dairy cows in the absence of the medicinal ingredient luffa lao.

[0053] The purpose of comparative example 4 is to test the therapeutic effect on breast engorgement in dairy cows in the absence of the ministerial ingredient fenugreek, the adjuvant ingredient honeysuckle, and the facilitating ingredient luffa lao.

[0054] The product raw materials provided in the above Examples 1 to 3 and Comparative Examples 1 to 4 are all prepared according to the following steps:

[0055] These raw materials are all sun-dried. After the raw materials are fixed, they are put into the twisting machine, the tea balls are shaken and fried to dry, spread out and air-dried for 4 to 6 hours, then passed through an 8-mesh sieve, mixed evenly, and then sealed and packaged in plastic bags.

[0056] Usage: Each time you feed, measure 1200 ml of boiling water, weigh 56 grams of dandelion tea, simmer for 15 minutes, then mix with feed and feed. Do not feed more than 4000 ml per day. Feed once a day during breast engorgement. A course of treatment is 10 days. During the prevention period, feed once every other day or reduce the daily dose by half.

[0057] The following experiments were performed to demonstrate the therapeutic effects of the dandelion tea:

[0058] 1. The therapeutic effect of dandelion tea on breast engorgement in dairy cows

[0059] 1.1 Methods

[0060] 150 24-month-old dairy cows with udder pain, hard lumps in the udder, redness and swelling around the udder, and listlessness were selected from 10 large dairy farms (Wu Xianli Beef Cattle Farm in Gannan County, Dayuan Dairy Farm in Daqing City, Jixing Farm in Ranghulu District, etc.). During the experiment, all experiments were completed in the isolation room, and the pens were kept dry and clean. Feeding, drinking water and feeding management were carried out according to conventional methods and kept as consistent as possible.

[0061] The cows were randomly divided into 3 groups, each with 50 cows. The cows were fed with dandelion tea prepared with the raw materials described in Example 1, Example 2, and Example 3, once a day, and supplemented with food. The control group 1 was injected with 16,500 IU of penicillin and 10 mg of oxytetracycline per kilogram of body weight per cow, and the control group 2 was intravenously injected with isotonic liquid containing glucose and antibacterial drugs (when used, ceftiofur was dissolved in 5% glucose injection and then injected, and the injection dosage of ceftiofur was 50 mg / kg of cow body weight). The treatment was continued for 10 days, and observation and records were kept.

[0062] 1.2 Treatment Standards

[0063] Cure: The redness, swelling and hard lumps in the udders of the affected cows disappeared, milk production recovered, and their mental state improved.

[0064] Effective: The redness and swelling of the udders of sick cows were alleviated, the hard lumps became smaller, and milk production began to resume.

[0065] Ineffective: The pain, redness and swelling of the udders of the diseased dairy cows were not effectively relieved.

[0066] 1.3 Results

[0067] As can be seen from Table 1, under the same dosage, the dandelion tea of ​​Example 1 of the present invention was fed to the sick cows with breast swelling according to the instructions, and the number of cured cows and the effect were significantly better than those of the other examples and the comparison group. After 30 days, the recurrence rate of the control groups 1 and 2 was extremely high, and the number of recurrences in Example 1 was 0. After 10 days, the milk production increased significantly compared with the other four groups, confirming that the ingredient ratio of Example 1 is the optimal ratio.

[0068] Table 1 Comparison of treatment effects in different groups

[0069]

[0070]

[0071] 2. Effect of dandelion tea on serum biochemical parameters of dairy cows

[0072] 2.1 Methods

[0073] A completely randomized experimental method was used to select 120 dairy cows of 24 months of age, lactation period (about 150 days), similar milk production and somatic cell count less than 400,000 / mL, and randomly divided into 6 groups, 20 in each group. The test was continued for 10 days, and the treatment group (ie, Example 1, hereinafter referred to as the treatment group), comparative example 1, comparative example 2, comparative example 3 and comparative example 4 were fed 56g of dandelion tea per head of mixed feed every day, and the control group was injected with 16,500 IU of penicillin and 10mg of oxytetracycline per kilogram of body weight per head of cow. Ensure that the six groups are consistent in terms of feed amount, feeding time and pen environment.

[0074] 2.2 Blood sample collection and determination

[0075] Before the first feeding on the 10th day, 10 mL / head of tail vein blood was collected, and the blood was allowed to stand at room temperature for 30 minutes and then centrifuged at 2000 rpm for 10 minutes. The supernatant was taken and stored at -80°C.

[0076] 2.3 Treatment Standards

[0077] Cure: The redness, swelling and hard lumps in the udders of the affected cows disappeared, milk production recovered, and their mental state improved.

[0078] Effective: The redness and swelling of the udders of sick cows were alleviated, the hard lumps became smaller, and milk production began to resume.

[0079] Ineffective: The pain, redness and swelling of the udders of the diseased dairy cows were not effectively relieved.

[0080] 2.4 Results

[0081] The levels of albumin (ALB), urea (Urea), and blood glucose (GLUC) in the serum of healthy cows are higher than those of cows with bloating. The liver synthesis function of cows with bloating is reduced, which easily leads to a decrease in albumin (ALB) levels; the protein metabolism ability of cows with bloating is weakened, and poor nutritional health is a manifestation of low urea (Urea) levels in serum; when cows have bloating or mastitis, it will lead to a decrease in blood glucose (GLUC) levels, and the stability of blood glucose levels is crucial to maintaining normal metabolism of cows.

[0082] As shown in Table 2, the curative effect and the comprehensive results of serum index detection in the treatment group were better than those in comparative examples 1 to 4 and the control group, and there was no recurrence in the treatment group after 30 days, while cows in the other five groups all had recurrence of breast engorgement.

[0083] Table 2 Effects of dandelion tea on serum biochemical parameters of dairy cows

[0084]

[0085] 3. Effect of dandelion tea on the composition of dairy cow milk

[0086] 3.1 Methods

[0087] A completely randomized experimental method was adopted, and 150 healthy dairy cows of 24 months of age, lactation period (about 150 days), similar milk production and somatic cell count less than 400,000 / mL were selected and randomly divided into 3 groups, 50 in each group. The test was continued for 10 days, and each head of treatment group 1 was fed 56g of dandelion tea of ​​Example 1 with mixed feed every day, and each head of treatment group 2 was injected with 16,500 IU of penicillin and 10mg of oxytetracycline per kilogram of body weight, and the control group was only fed with feed, and the treatment was continued for 10 days. Ensure that the two groups are consistent in terms of feed amount, feeding time and pen environment.

[0088] 3.2 Milk sample collection and determination

[0089] Before the first feeding on the 10th day, 50 ml of milk sample was collected, 8 mg of bronopol was added for preservation, and the sample was stored at 4°C for milk component analysis.

[0090] The milk sample items measured in this experiment are: milk fat, milk protein, lactose, non-fat milk solids, and total solids. Milk fat contains essential fatty acids and phospholipids for humans, and is also an important source of fat-soluble vitamins. Milk protein contains branched-chain amino acids and physiologically active polypeptide components that are essential to the human body, and is an important criterion for measuring the quality of milk sources. Lactose is a carbohydrate unique to milk, and its content is relatively stable. Non-fat milk solids include nutrients such as protein, carbohydrates, minerals, and vitamins, and are an important indicator for judging the nutritional value of milk. The higher the non-fat milk solids content, the higher the nutrient content in the milk and the better the quality of the milk. Total solids refers to the sum of all solid components in milk, including fat, protein, lactose, minerals, etc. The total solids content can reflect the overall nutritional density of milk. The above are all representative indicators in milk, and they together determine the nutritional value and quality of milk.

[0091] 3.3 Results

[0092] As can be seen from Table 3, feeding the dandelion tea of ​​Example 1 of the present invention at the same time as feeding the feed has no obvious effect on the milk composition of dairy cows (P>0.05), and compared with the control group without using the product, the data difference has no significant statistical significance, but there is a large difference between the treatment group 2 and the control group (P<0.06), indicating that drug treatment has a certain effect on the milk composition of dairy cows, which fully confirms the safety and stability of the dandelion tea of ​​Example 1 of the present invention in the application of dairy cows, and provides a strong scientific basis for its promotion and use in the field of dairy cow breeding.

[0093] Table 3 Determination of milk components of different groups of cows (%)

[0094] Grouping Milk fat percentage Milk protein rate Lactose rate Non-dairy solids Total Solids Treatment Group 1 3.78±0.20 3.58±0.07 4.65±0.06 9.27±0.10 13.01±0.24 Treatment Group 2 1.56±0.23 1.91±0.12 2.35±0.22 6.88±0.21 11.01±0.03 Control group 4.12±0.31 3.43±0.19 4.33±0.15 8.51±0.06 12.18±0.58

[0095] 4. Effect of dandelion tea on serum immunity of dairy cows

[0096] 4.1 Methods

[0097] A completely randomized experimental method was adopted, and 150 healthy dairy cows of 24 months of age, lactation period (about 150 days), similar milk production and somatic cell count less than 400,000 / mL were selected and randomly divided into 3 groups, 50 in each group. The test was continued for 10 days, and each head of treatment group 1 was fed 56g of dandelion tea of ​​Example 1 of the present invention with mixed feed every day, and each head of treatment group 2 was injected with 16,500 IU of penicillin and 10 mg of oxytetracycline per kilogram of body weight, and the control group was only fed with feed, and the treatment was continued for 10 days. Ensure that the two groups are consistent in terms of feed amount, feeding time, and pen environment.

[0098] 4.2 Blood sample collection and determination

[0099] Before the first feeding on the 10th day, 10 mL / head of tail vein blood was collected, and the blood was allowed to stand at room temperature for 30 minutes and then centrifuged at 2000 rpm for 10 minutes. The supernatant was taken and stored at -80°C.

[0100] The serum biochemical indicators measured in this experiment were: immune 1379 globulin M (IgM), immunoglobulin G (IgG), interleukin-2 (IL-2), and interleukin-4 (IL-4).

[0101] Immunoglobulin G (IgG) accounts for the majority of the total serum immunoglobulin and plays a major role in fighting viral infections. Immune globulin M (IgM) is the earliest type of antibody to appear and plays a key role in the primary humoral immune response. It has powerful bactericidal ability and phagocytic function. Interleukin-2 (IL-2) promotes the proliferation and differentiation of T lymphocytes, enhances the body's resistance to pathogenic microorganisms, and participates in regulating the overall balance of the immune response. Interleukin-4 (IL-4) helps to resist parasitic infections and the production of protective immunoglobulins. The above components all have an important influence on the immune function of bovine serum.

[0102] 4.3 Results

[0103] As can be seen from Table 4, feeding dandelion tea with feed can significantly increase the IgM and IgA content in the serum of dairy cows (P < 0.05), thereby effectively enhancing the immune defense ability of dairy cows and reducing the risk of dairy cows contracting diseases. The serum immunity of dairy cows injected with antibiotics may increase or decrease, and may also cause immune system disorders in dairy cows, which further confirms the safety and reliability of this product.

[0104] Table 4 Determination of serum immune indexes in different groups

[0105] Group IgG (mg / mL) IgM (μg / mL) IL-2 (pg / mL) IL-4 (pg / mL) Treatment Group 1 5.21 1740.25 764.32 99.73 Treatment Group 2 3.17 986.31 1554，37 67.12 Control group 4.78 1379.27 899.67 146.31

[0106] It should be noted that when the claims of the present invention involve numerical ranges, it should be understood that the two endpoints of each numerical range and any numerical value between the two endpoints can be selected. In order to avoid redundancy, the present invention describes a preferred embodiment.

[0107] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0108] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A dandelion tea for treating breast engorgement in dairy cows, characterized in that: The invention is prepared from the following raw materials by weight: 5-40 parts of dandelion, 15-20 parts of honeysuckle, 10-15 parts of loofah, 5-10 parts of chuanxiong, 8-15 parts of fenugreek, 15-20 parts of forsythia and 5-20 parts of tongcao.

2. The method for preparing dandelion tea according to claim 1, characterized in that: The following steps are involved: Weigh 5-40 parts of dried dandelion, 15-20 parts of honeysuckle, 10-15 parts of luffa lao, 5-10 parts of chuanxiong, 8-15 parts of fenugreek, 15-20 parts of forsythia, and 5-20 parts of tongcao, grind and mix the raw materials to obtain the dandelion tea.

3. The use of dandelion tea as a feed additive for dairy cows according to claim 1, characterized in that: The feed additive is used for treating breast engorgement in dairy cows.

4. The use of dandelion tea as a feed additive for dairy cows according to claim 3, characterized in that: The feed additive is used for inhibiting the decreased liver synthesis function of dairy cows suffering from bloating.

5. The use of dandelion tea as a feed additive for dairy cows according to claim 4, characterized in that: The decreased liver synthetic function is reflected in the decreased albumin level in serum.

6. The use of dandelion tea as a feed additive for dairy cows according to claim 3, characterized in that: The feed additive is used for inhibiting the weakening of protein metabolism ability of dairy cows suffering from breast bloating.

7. The use of dandelion tea as a feed additive for dairy cows according to claim 6, characterized in that: The reduced protein metabolism capacity is reflected in low urea levels in serum.

8. The use of dandelion tea as a feed additive for dairy cows according to claim 3, characterized in that: The feed additive is used for inhibiting the reduction of blood sugar level in dairy cows suffering from bloating.

9. The use of dandelion tea as a feed additive for dairy cows according to claim 3, characterized in that: The feed additive is used for increasing the milk production of dairy cows suffering from breast engorgement.

10. The use of dandelion tea as a feed additive for dairy cows according to claim 3, characterized in that: The feed additive is used for improving the immune defense ability of dairy cows suffering from breast bloating.

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