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Plant extract feed additive capable of preventing and treating respiratory tract diseases of pigs and enhancing immunity and application

An extract and extraction tank technology, applied in the field of plant extract feed additives, can solve the problems of drug resistance drug residues, difficulties in treatment and prevention, superinfection of pigs, etc., to enhance immunity and combine prevention and treatment. effect, enhance immunity

Inactive Publication Date: 2019-02-22
HUAZHONG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the many causes of respiratory diseases, many difficulties have been brought to the treatment and prevention.
At present, antibiotics are mainly used to treat pig respiratory diseases. However, long-term use of large doses of antibiotics will not only easily produce drug resistance and drug residues, but also easily cause superinfection of pigs (such as liver lesions, etc.), which is counterproductive.

Method used

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  • Plant extract feed additive capable of preventing and treating respiratory tract diseases of pigs and enhancing immunity and application
  • Plant extract feed additive capable of preventing and treating respiratory tract diseases of pigs and enhancing immunity and application
  • Plant extract feed additive capable of preventing and treating respiratory tract diseases of pigs and enhancing immunity and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A plant extract feed additive for preventing and treating pig respiratory diseases and enhancing immunity is prepared by the following method:

[0024] (1) Dry the rhizome of licorice root in an oven at 100° C. for 50 minutes, take it out and pulverize it, and pass it through a 60-mesh sieve to obtain dry licorice powder.

[0025] (2) Add licorice powder and 70% ethanol solution into an ultrasonic extraction tank at a ratio of 1:30 (g / mL) to liquid, extract for 60 min at an extraction temperature of 70° C., filter under reduced pressure, and place the filtrate in Centrifuge under the condition of 3000r / min for 30 minutes, take the supernatant, add the filter residue to 70% ethanol solution, and add it to the ultrasonic extraction tank according to the ratio of material to liquid (1:30 (g / mL) for extraction for 40min, collect And combine two filtrates.

[0026] (3) after vacuum drying, pulverize and pass through a 60-mesh sieve to obtain the licorice extract, which is u...

Embodiment 2

[0028] Application of licorice extract in the preparation of feed additives:

[0029] 1. Experimental animals and experimental design

[0030] The experiment selected 60 growing pigs suffering from respiratory diseases (30±1kg “Du×Long×Da” three-way hybrid pigs) and randomly divided them into 2 groups, with 5 repetitions in each group and 6 pigs in each repetition, including A control group (feeding basal diet + conventional western medicine treatment) and 4 test groups (adding licorice extract 250g / t, 300g / t, 350g / t, 400g / t on the basis of the diet of the control group, respectively, Named as: test group 1, test group 2, test group 3 and test group 4. The test pigs were free to eat and drink, and the recovery and mental status of the pigs were observed and recorded every day during the test period. The test period was 30 days in total. Weigh body weight at the end, and feed.Observe the state of mind of each treatment group, calculate daily gain, feed-to-meat ratio (feed inta...

Embodiment 3

[0044] A plant extract feed additive for preventing pig respiratory diseases and enhancing immunity, including: 30 parts of licorice extract, 25 parts of rhubarb extract, 20 parts of bellflower extract, 15 parts of echinacea extract, 10 parts of forsythia extract , parts by weight.

[0045] The preparation method of described rhubarb extract is:

[0046] (1) Dry the rhizome of rhubarb in an oven at 100° C. for 50 minutes, take it out and pulverize it, and pass it through a 60-mesh sieve to obtain dry rhubarb powder.

[0047] (2) Add rhubarb powder and 80% ethanol solution into the ultrasonic extraction tank at a ratio of 1:40 (g / mL) to extract for 60 minutes, filter under reduced pressure, and centrifuge the filtrate at 3000 r / min After 30 minutes, take the supernatant, add the filter residue to the ethanol solution, add it into the ultrasonic extraction tank at a ratio of 1:30 (g / mL) to extract for 30 minutes, collect and combine the two filtrates.

[0048] (3) Concentrate ...

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Abstract

The invention belongs to the field of feed additives, and particularly discloses a plant extract feed additive capable of preventing and treating respiratory tract diseases of pigs and enhancing immunity and an application. The inventor of the plant extract feed additive disclosed by the invention finds that when a glycyrrhiza glabra extract is used for a feed additive, the effect of promoting growth and development of pigs can be achieved, the immunity of the pigs can be effectively improved, and the glycyrrhiza glabra extract can be used for preventing and treating the respiratory tract diseases of the pigs. The feed additive prepared through compounding the glycyrrhiza glabra extract, a rheum officinale extract, a platycodon root extract, an echinacea purpurea extract and a fructus forsythiae extract, has various efficacy and rich nutrient components, can prevent and treat the respiratory tract diseases of the pigs, and can effectively improve production properties and promote growth. Besides, the additive is from purely natural substances, has the characteristics of being free from residues, small in side effects and free from drug tolerance, and has important significance in development of green animal husbandry.

Description

technical field [0001] The invention belongs to the field of feed additives, in particular to a plant extract feed additive for preventing and treating porcine respiratory diseases and enhancing immunity and its application. technical background [0002] With the increasingly intensive development of pig production in my country, the complexity and harm of pig diseases are also increasing day by day. Porcine respiratory disease is the most prominent problem in my country's pig production in recent years. It is prevalent and occurs all year round, especially when the seasons alternate. The economic loss is large and difficult to control. Sick pigs have become disease spreaders because they carry a variety of related pathogens for a long time. There are many causes of respiratory diseases, not only pathogenic, but also environmental factors and low immunity of the pig herd itself. For pigs, the effects of these factors are cumulative, and each factor can be reduced. Disease ...

Claims

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Application Information

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IPC IPC(8): A23K50/30A23K10/30
CPCA23K10/30A23K50/30
Inventor 黄飞若姚卫磊王同心夏军李娟张黎
Owner HUAZHONG AGRI UNIV
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