CN110692835A

CN110692835A - Plant extract feed additive for improving reproductive performance of sows

Info

Publication number: CN110692835A
Application number: CN201911093296.5A
Authority: CN
Inventors: 陈征义; 石林
Original assignee: GUANGZHOU CYNOSURE BIO-TECHNOLOGY Co Ltd
Current assignee: GUANGZHOU CYNOSURE BIO-TECHNOLOGY Co Ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-01-17

Abstract

The invention discloses a plant extract feed additive for improving the reproductive performance of sows, belonging to the field of feed additives. The feed additive comprises radix Angelicae sinensis, radix astragali polysaccharide, herba Leonuri, soybean isoflavone, semen Vaccariae, fructus Ligustri Lucidi polysaccharide, rhizoma Polygonati and appropriate amount of carrier. The sow feeding test shows that the influence of the plant extract feed additive on the sow is reflected in the following aspects: the feed intake in the lactation period can be improved, and the backfat loss is reduced; the immunity of the organism is promoted; promoting the development of mammary tissue, increasing the milk yield, and improving the contents of milk fat and milk protein in normal milk; in addition, the influence on the piglets is reflected in the aspects of improving the weaned individual weight and the average daily gain of the piglets and reducing the occurrence of the disease diarrhea. The components of the invention are green and environment-friendly, have no toxic or side effect, have no in-vivo accumulation and can not generate drug resistance. The raw materials are easy to obtain, the price is low, the production process is mature, and the industrial production is easy.

Description

Plant extract feed additive for improving reproductive performance of sows

Technical Field

The invention belongs to the field of feed additives, and particularly relates to a plant extract feed additive for improving reproductive performance of sows.

Background

The final aim of modern pig raising production is to reduce production cost and improve economic benefit. The health condition of the piglets is the key for later feeding. The breast milk is the main source of nutrition for the piglets in the lactation period, and the quality and the quantity of the breast milk directly influence the development of the growth potential of the piglets. At present, the problems of the reduction of the immunity of sows, the reduction of milk production capacity, poor milk quality and the like are frequently encountered in the production of sows, so that the nutrition deficiency of piglets, the increase of diarrhea rate, the low survival rate of the piglets, the small size and the slow growth speed are caused. In order to improve the reproductive performance of sows, a plurality of experts and scholars add medicines such as antibiotics and the like into daily ration of the sows so as to enhance the physical health condition of the sows. Although the effect is remarkable, the problems of drug residue, drug resistance, food safety and the like are also concerned. Therefore, the search for a novel feed additive which is healthy, safe, green and pollution-free and can promote the reproductive performance of sows becomes the focus in the industry. Plant extracts have received attention from many researchers at home and abroad in this large environment.

At present, the application of the plant extract as a feed additive in the piglet and fattening pig stages has remarkable effect, but the research on the sow is relatively less. Aiming at the problem of low production level of domestic sows at present, a natural and safe feed additive capable of improving the reproductive performance of the sows is developed, is very important for sustainable development of livestock breeding and environmental protection, and has a very wide application prospect.

The plant extract is derived from pure nature, is a product of Chinese medicine theory and thousands of years of practice, and has the characteristics and advantages of functional diversity, safety and reliability, overall adjustability, no drug resistance and the like. Meanwhile, the efficacy of various plant extracts can be maximized through scientific combination and reasonable compatibility. Therefore, the invention designs the feed additive which is prepared by mixing a plurality of plant extracts according to a certain proportion and is beneficial to improving the reproductive performance of sows.

Disclosure of Invention

The invention aims to provide a plant extract feed additive capable of improving the reproductive performance of sows. The feed additive is prepared by fully considering the physiological characteristics of the lactating sows. After the sow eats the feed, the immunity of the sow is obviously improved; the lactation capacity of the sow is obviously improved, and the milk quality is obviously improved; the survival rate of the piglets is improved, the diarrhea rate of the piglets is reduced, the healthy growth and the uniform development of the piglets are promoted, the breeding cost is reduced, and the economic benefit is improved.

The invention can be realized by the following technical scheme:

a plant extract feed additive for improving the reproductive performance of sows is characterized by comprising the following steps:

1. the plant extract feed additive is characterized by comprising 10 parts by mass of Chinese angelica, 20 parts by mass of astragalus polysaccharide, 10 parts by mass of motherwort, 10 parts by mass of soybean isoflavone, 5 parts by mass of cowherb seed, 5 parts by mass of glossy privet fruit polysaccharide, 5 parts by mass of rhizoma polygonati and 35 parts by mass of a carrier;

2. the carrier is a mixture of silicon dioxide, zeolite powder and corn starch, and the mass ratio of the silicon dioxide to the zeolite powder to the corn starch is 1: 4: 5;

3. the plant extract feed additive is prepared by the following method, and the raw materials are uniformly mixed;

4. the plant extracts involved in the invention are all powder, and considering the mixing uniformity of the feed additive, the plant extracts are mixed according to the following modes: uniformly mixing the cowherb seed, the glossy privet fruit polysaccharide and the sealwort, sequentially adding the angelica, the motherwort and the soybean isoflavone, then adding the astragalus polysaccharide, and fully and uniformly mixing. Finally, the carrier is added and mixed evenly to obtain the plant extract feed additive.

The invention has the beneficial effects that: provides a plant extract feed additive for improving the reproductive performance of sows. The additive is eaten by sows, and the immunity of the sows is obviously improved; the lactation capacity of the sow is obviously improved, and the milk quality is obviously improved; the survival rate of the piglets is improved, the diarrhea rate of the piglets is reduced, the healthy growth and the uniform development of the piglets are promoted, the breeding cost is reduced, and the economic benefit is improved.

Compared with the prior art, the invention has the following advantages and effects:

1. the main components of the invention are natural plant extracts, and the invention has the advantages of high safety, no pollution and no toxic or side effect;

2. the main components of the feed are nutritional factors which can directly influence the reproductive performance of the sow, can directly adjust hormone, intestinal tract and mammary gland organs of the sow, improve the feed intake of the sow, improve the birth weight of piglets and increase the lactation yield of the sow, and has the advantages of quick response, less addition amount and low cost compared with other products;

3. the invention has simple production process and reduces the production cost.

The main components in the invention have the following effects:

dang Gui is recorded in Shen nong Ben Cao Jing, its taste is sweet and mild, and its warm nature is widely used in clinic. Research shows that the angelica has good effects on the aspects of cardiovascular system, hematopoietic system, immunologic function, substance metabolism, oxidation resistance and the like. The angelica is used as a good medicine for gynecology and has very obvious curative effect on women. It is mainly used for treating blood deficiency, sallow complexion, menoxenia, abdominal pain due to deficiency cold, constipation, dysentery, and rheumatalgia. Research shows that the angelica sinensis extract added into the feed has a good promotion effect on the production performance of sows.

Astragalus polysaccharides, a major active ingredient in Astragalus extracts. Modern medicine proves that astragalus has wide pharmacological action, can enhance the immunity of organisms, enhance cell metabolism, and has the effects of reinforcing kidney, reducing blood pressure, protecting liver and resisting inflammation. Modern researches show that astragalus polysaccharide has obvious influence on the development of mammary glands of sows, can improve the estrogen level of the sows and effectively increase the number of prolactin receptors in mammary glands, thereby realizing the biological efficacy of prolactin in promoting the development of mammary glands and achieving the effect of increasing the lactation yield.

According to the records of Ben Cao gang mu, Leonurus japonicus has pungent and slightly bitter taste, belongs to cold nature, and has the functions of nourishing qi and blood, promoting blood circulation and eliminating stasis. Modern medical research shows that the motherwort has an effect of increasing the contraction frequency and strength of the mother uterus; has certain health care effect on cardiac muscle; can promote blood circulation; has inhibitory effect on lipid peroxidation; the active substances in the motherwort can improve the immunity in vivo and play a good role in regulating the constancy of the internal environment. Motherwort is used in human, and the curative effect on female livestock is also called as good gynecological medicine for livestock and poultry.

Many studies on animal productivity of soybean isoflavones have been reported. A large number of researches show that the soybean isoflavone can obviously improve the growth performance of animals and the oxidation resistance of organisms; has effect in promoting release of growth factors such as growth hormone and IGF-1; the soybean isoflavone can also improve the activity of partial digestive enzyme in the intestinal tract of animals and improve the diversity of intestinal flora.

Cowherb seed was recorded in Bencao gang mu as early as its main function of inducing lactation. Modern researches prove that the active ingredient of the cowherb seed flavonoid glycoside in the Chinese herbal medicine cowherb seed can promote the proliferation of mammary gland cells and promote the lactation amount by changing the inner ultrastructure of the mammary gland cells.

The fructus Ligustri Lucidi polysaccharide is active substance of traditional Chinese medicine fructus Ligustri Lucidi. Research shows that the glossy privet fruit polysaccharide can eliminate the absorption of free amino acid from mammary gland cells, so that protein synthesis in the mammary gland cells is increased by radicals, superoxide anion radicals and active oxygen, and the activity of antioxidant enzyme is improved, thereby inhibiting the degeneration of immune organs of organisms and improving the immunocompetence. Researches prove that the glossy privet fruit polysaccharide also has various pharmacological effects of protecting the liver, protecting the stomach, strengthening the heart, reducing blood fat, resisting inflammation, resisting virus and the like.

Rhizoma Polygonati has effects of lowering blood pressure, lowering blood sugar, reducing blood lipid, preventing atherosclerosis, delaying aging and resisting bacteria, and rhizoma Polygonati polysaccharide has immunity activating effect. Experiments show that the sealwort extract has obvious inhibition effect on bacteria such as typhoid bacillus, acid-fast bacillus and the like, and also has obvious inhibition effect on some common fungi.

Through a plurality of tests and years of practice, the plant extract is added into the feed to produce the feed capable of improving the reproductive performance of sows. The feed can be used for feeding pregnant sow to promote immunity of sow, increase litter size and increase lactation.

Detailed Description

Example 1: the influence of the additive of the invention added into the feed on the lactation performance and the immunity index of the sows in the lactation period

40 healthy pregnant sows with 2-3 births were selected and randomized into 2 groups (control and test) with 20 replicates per group. Wherein the control group was fed basal diet; the test group was fed a basal diet plus the plant extract additive of the invention. The feeding period is from 0 days of gestation to 21 days of lactation. After the test is finished, 10ml of blood is taken from the ear vein of each sow, the sow stands still and centrifugates to take the upper serum, and the upper serum is stored at the temperature of minus 20 ℃ to detect related indexes. The test results are shown in table 1:

table 1: the influence of the additive of the invention added into the feed on the lactation performance and the immunity index of the sows in the lactation period

Test results show that the feed additive provided by the invention can improve the feed intake of sows in the lactation period, reduce the loss of fat loss of sows and obviously improve the average daily lactation amount; some immune factors such as IgG, IgA and IL-2 in serum are obviously higher than those in a control group (P < 0.05). The plant extract feed additive has the effect of improving the production performance of sows and has a relatively obvious effect of improving the immunity of the organisms of the sows.

Example 2: influence of the additive of the invention on the production performance of newborn piglets

40 healthy pregnant sows with 2-3 births were selected and randomized into 2 groups (control and test) with 20 replicates per group. Wherein the control group was fed basal diet; the test group was fed a basal diet plus the plant extract additive of the invention. The litter size, weight of newborn piglets, weight of weaned piglets and diarrhea rate of piglets were recorded. The test results are shown in table 2:

table 2: influence of the additive of the invention on the production performance of newborn piglets

The test result shows that: the additive added into the feed has a tendency of improving the litter size and the number born alive on day 21; can obviously improve the litter weight gain, the individual average weight and the average daily weight gain of the piglets in the lactation period.

Example 3: the influence of the additive of the invention added into the feed on the milk quality of the sows

40 healthy pregnant sows with 2-3 births were selected and randomized into 2 groups (control and test) with 20 replicates per group. Wherein the control group was fed basal diet; the test group was fed a basal diet plus the plant extract additive of the invention. 30mL of milk is collected from the front, middle and rear 3 parts of the breasts of the sows on the day of delivery, 10 days after delivery and 21 days, and the milk is uniformly mixed and placed at the temperature of-20 ℃ for storage to be tested. The milk fat, lactose, milk protein, total solids and non-fat solids content were measured on days 7, 14 and 21, respectively, using an infrared milk ingredient analyzer (Milko-Scan 134A/B, Foss, Denmark). The test results are shown in table 3:

table 3: influence of addition of the additive of the invention to the milk component content of sows (%)

The test result shows that: the addition of the plant extract feed additive of the invention into basal feed can improve the milk fat content in normal milk. The milk fat content of the test group is respectively improved by 32.21%, 17.91% and 21.7% on the 7 th day, 14 th day and 21 th day compared with the control group; the content of the milk protein of the test group is obviously higher than that of the control group at 21 days; the additive of the invention has no significant influence on the lactose content; compared with a control group, the total solid content in the test group is obviously improved by 8.59 percent in 7 days; the additives of the present invention have no significant effect on the non-fat solids content.

And (4) conclusion: the plant extract feed additive is natural and pollution-free, and does not generate residue in animal bodies, drug resistance and other problems. Can obviously improve the reproductive performance of sows and has obvious promotion effect on the growth performance of newborn piglets. Is an ideal green and pollution-free feed additive, and is a product worthy of development and application.

Claims

1. A plant extract feed additive is characterized in that the plant extract feed additive is composed of angelica sinensis, astragalus polysaccharide, motherwort herb, soybean isoflavone, cowherb seed, glossy privet fruit polysaccharide, rhizoma polygonati and a proper amount of carrier.

2. Wherein the traditional Chinese medicine composition comprises 5 ~ 20 parts by mass of angelica sinensis, 5 ~ 20 parts by mass of astragalus polysaccharide, 5 ~ 10 parts by mass of motherwort herb, 5 ~ 10 parts by mass of soybean isoflavone, 5 ~ 10 parts by mass of cowherb seed, 5 ~ 10 parts by mass of glossy privet fruit polysaccharide, 5 ~ 10 parts by mass of rhizoma polygonati and 10 ~ 65 parts by mass of a carrier.

3. The Chinese angelica, the astragalus polysaccharide, the motherwort, the soybean isoflavone, the cowherb seed, the glossy privet fruit polysaccharide and the sealwort are adsorbed and mixed uniformly by using silicon dioxide respectively, then the zeolite powder and the corn starch are added and mixed uniformly to obtain the plant extract feed additive, and the addition amount of the plant extract feed additive in the sow feed is 300 ~ 600 g/t.

4. The plant extract feed additive is applied to the sow feed as a product for improving the reproductive performance of the sows, and has no toxic or side effects of environmental pollution, drug residue and the like; the effective components in the plant extract feed additive such as radix Angelicae sinensis, Astragalus polysaccharides, herba Leonuri, soybean isoflavone, semen Vaccariae, fructus Ligustri Lucidi polysaccharide, and rhizoma Polygonati are all derived from natural plants, and are green, safe, nontoxic, and residue-free.

5. The plant extract feed additive according to claim 1, wherein the plant extract feed additive comprises 10 parts by mass of angelica sinensis, 20 parts by mass of astragalus polysaccharide, 10 parts by mass of leonurus, 10 parts by mass of soybean isoflavone, 5 parts by mass of cowherb seed, 5 parts by mass of glossy privet fruit polysaccharide, 5 parts by mass of polygonatum sibiricum, and 35 parts by mass of a carrier.

6. The plant extract feed additive as claimed in claim 1, wherein the carrier is a mixture of silica, zeolite powder and corn starch, and the mass ratio of the carrier is 1: 4: 5.