Background technology
Infectious bronchitis of chicken (Infectious bronchitis, IB) be the viral disease that a kind of acute, the high degree in contact of the chicken that caused by infectious bronchitis virus (Infectious bronchitisvirus, IBV) infects.Infected chicken clinical symptoms shows as cough, sneeze, trachea rale, price of deed decline, productivity's forfeiture, mortality rate increase etc.Laying hen infects this after being ill, and egg production reduces greatly, and protein quality declines fairly obvious.One of serious infectious diseases of this Bing Shi serious harm world aviculture, primary disease is popular throughout the year, but the most serious for cold season with Winter-Spring, and this disease has spread to national most area at present, causes huge economic loss to poultry husbandry.Because the serotype of IBV is more, variation is fast, and each strain Virulence Difference is large, and between strain, cross-protection is low, brings larger difficulty to the preventing and controlling of this disease.
The treatment of this disease at present adopts the biochemical drugs such as interferon, immunoglobulin, immune ribonucleic acid to treat more, there is price costly, the shortcomings such as curative effect is not remarkable.In recent years, explore the attention that cheap, eutherapeutic treatment by Chinese herbs infectious bronchitis is more and more subject to veterinary clinic, as the treatment adopting the Chinese medicine with heat-clearing and toxic substances removing and relieving cough and resolving phlegm to carry out this disease, achieve certain curative effect.
Radix Scutellariae, Fructus Forsythiae have effect of heat-clearing and toxic substances removing, and the Rhizoma Atractylodis Macrocephalae has effect of spleen invigorating and dampness, are used for the treatment of the diseases such as the heating of poultry epidemic febrile disease, cough due to lung-heat clinically.The pharmaceutical composition of existing control infectious bronchitis of chicken mostly is one or both the large prescription comprised in Radix Scutellariae, Fructus Forsythiae, the Rhizoma Atractylodis Macrocephalae three kinds of primary crude drugs, not yet has with the pharmaceutical composition of Radix Scutellariae extract, Fructus Forsythiae extract and the Rhizoma Atractylodis Macrocephalae control infectious bronchitis of chicken that is prescription.
Summary of the invention
Technical scheme of the present invention there is provided a kind of pharmaceutical composition preventing and treating infectious bronchitis of chicken and its production and use.
The invention provides a kind of pharmaceutical composition preventing and treating infectious bronchitis of chicken, it is prepared from by the raw material of following weight proportioning:
Radix Scutellariae extract 1-3 part, Fructus Forsythiae extract 1-3 part, Rhizoma Atractylodis Macrocephalae 10-30 part.
Wherein, 85.0% is no less than containing baicalin in Radix Scutellariae extract; Be no less than 6.0% containing forsythiaside A in Fructus Forsythiae extract, phillyrin is no less than 0.5%.
Preferably, the weight proportion of raw material is:
Radix Scutellariae extract 1 part, Fructus Forsythiae extract 2 parts, the Rhizoma Atractylodis Macrocephalae 10 parts.
Pharmaceutical composition prepared by the present invention is by the protogenic medicinal powder of the Rhizoma Atractylodis Macrocephalae, water or extractive with organic solvent, adds Radix Scutellariae extract and Fructus Forsythiae extract as active component, adds pharmaceutically acceptable adjuvant or complementary composition is prepared into pharmaceutically conventional preparation.
Wherein, described preparation is decoction, powder, granule, mixture, tablet or capsule.
Present invention also offers a kind of method preparing described pharmaceutical composition, it comprises the steps:
A. the Radix Scutellariae extract of each weight proportion, Fructus Forsythiae extract, Rhizoma Atractylodis Macrocephalae is taken;
B. get Rhizoma Atractylodis Macrocephalae, add 20 times amount water boiling and extraction 3 times, each 1.5 hours, filter, filtrate concentrates, and drying under reduced pressure is for subsequent use;
C., after Rhizoma Atractylodis Macrocephalae extract mix homogeneously Radix Scutellariae extract, Fructus Forsythiae extract and step b obtained, add pharmaceutically acceptable adjuvant or complementary composition and be prepared into pharmaceutically conventional preparation.
Present invention also offers the purposes of this pharmaceutical composition in the medicine of preparation control infectious bronchitis of chicken.
Radix Scutellariae extract, Fructus Forsythiae extract, the Rhizoma Atractylodis Macrocephalae three kinds of medicines are carried out combination and are used for the treatment of infectious bronchitis of chicken by the present invention, compare with antibacterials with clinical conventional antiviral, evident in efficacy, cure rate reaches 98%, for veterinary clinic provides a kind of pharmaceutical composition for the treatment of infectious bronchitis of chicken completely newly.
Below by way of detailed description of the invention, the present invention is described in further detail, but do not limit the present invention, the various change that those skilled in the art make according to the present invention and replacement, only otherwise depart from spirit of the present invention, all should belong to the scope of claims of the present invention.
Detailed description of the invention
The preparation of embodiment 1 pharmaceutical composition of the present invention
Raw material is taken according to following weight proportioning:
Radix Scutellariae extract 1g, Fructus Forsythiae extract 1g, Rhizoma Atractylodis Macrocephalae 10g;
Preparation method:
A. the Radix Scutellariae extract of each weight proportion, Fructus Forsythiae extract, Rhizoma Atractylodis Macrocephalae is taken;
B. get Rhizoma Atractylodis Macrocephalae, add 20 times amount water boiling and extraction 3 times, each 1.5 hours, filter, filtrate concentrates, and drying under reduced pressure is for subsequent use.
C. add starch to 100g, mix homogeneously after Rhizoma Atractylodis Macrocephalae extract mix homogeneously Radix Scutellariae extract, Fructus Forsythiae extract and step b obtained, packaging, to obtain final product.
The preparation of embodiment 2 pharmaceutical composition of the present invention
Raw material is taken according to following weight proportioning:
Radix Scutellariae extract 1g, Fructus Forsythiae extract 1g, Rhizoma Atractylodis Macrocephalae 20g;
Preparation method is with embodiment 1.
The preparation of embodiment 3 pharmaceutical composition of the present invention
Raw material is taken according to following weight proportioning:
Radix Scutellariae extract 1g, Fructus Forsythiae extract 2g, Rhizoma Atractylodis Macrocephalae 10g;
Preparation method is with embodiment 1.
The preparation of embodiment 4 pharmaceutical composition of the present invention
Raw material is taken according to following weight proportioning:
Radix Scutellariae extract 1g, Fructus Forsythiae extract 2g, Rhizoma Atractylodis Macrocephalae 10g;
Preparation method:
A. the Radix Scutellariae extract of each weight proportion, Fructus Forsythiae extract, Rhizoma Atractylodis Macrocephalae is taken;
B. get Rhizoma Atractylodis Macrocephalae, add 20 times amount water boiling and extraction 3 times, each 1.5 hours, filter, filtrate concentrates, and extractum is for subsequent use;
C. after Rhizoma Atractylodis Macrocephalae extractum mix homogeneously Radix Scutellariae extract, Fructus Forsythiae extract and step b obtained, add purified water and be settled to 100ml, mix homogeneously, add 0.2% sodium benzoate, adjust ph is 6.5-7.0, and packaging, sterilizing, to obtain final product.
Above-mentioned Radix Scutellariae extract, Fructus Forsythiae extract are standby by the metric system of " People's Republic of China's veterinary drug allusion quotation " 2010 editions second Radix Scutellariae extracts, Fructus Forsythiae extract.
Beneficial effect of the present invention is proved below by way of specific experiment.
The clinical verification of experimental example 1 medical treatment infectious bronchitis of chicken of the present invention is tested
(1) Experimental agents
The medicine that sample 1 is prepared according to embodiment 1
The medicine that sample 2 is prepared according to embodiment 2
The medicine that sample 3 is prepared according to embodiment 3
The medicine that sample 4 is prepared according to embodiment 4
(2) laboratory animal is selected and grouping
Choose in clinical 30 ages in days, the symptoms such as performance rhinorrhea, dyspnea, sneeze, are diagnosed as the chickling of infectious bronchitis of chicken as clinical trial object, amount to 300, be divided into 6 groups, often organize 50, be respectively 1,2,3,4 groups, sample, positive drug group and blank group.
(3) medication and dosage
1,2,3,4 groups, sample respectively spice gives corresponding medicine (daily measure and count 0.01g/kg body weight with Radix Scutellariae extract), positive drug group gives tylosin Drug therapy (daily amount is 0.01g/kg body weight), blank group does not give any Drug therapy, successive administration 7 days.
(4) test index and method
Respectively at during administration and administration complete after in 7 days, observe clinical symptoms and the Cure of each group of ill chicken, the indexs such as statistical analysis cure rate, mortality rate.
(5) result of the test and analysis
Table 1 clinicing symptom observation result
From clinicing symptom observation result, matched group is under non-administrations, in group, the disease of the respiratory symptom such as rhinorrhea, dyspnea, sneeze of chickling continues the time is 13 days, it is 10 days that the respiratory symptom disease given after tylosin treatment continues the time, and respiratory symptom disease continues the time and greatly reduces after giving sample 1-4 group, concentrate on about 6-7 days, interpret sample 1-4 group all has the effect significantly alleviating infectious avian bronchitis acute attack symptom, and curative effect is better than positive drug group.
Table 2 clinical test results
From clinical verification result of the test, matched group mortality rate is 22%, and the mortality rate of positive drug group is 12%, the mortality rate of sample 1-4 group reduces greatly, all protect disease below 5%, all have the curative effect of significant treatment infectious avian bronchitis, curative effect is better than positive drug group.In his-and-hers watches, data carry out X 2 test, result shows, positive drug group is compared with matched group, there is significant difference (P<0.05), 1,2,3,4 groups, administration sample is compared with matched group, there is pole significant difference (P<0.01), optimum with the curative effect of 3,4 groups, administration sample, can 98% be reached to the cure rate of infectious avian bronchitis.Wherein, at crude drug weight proportion be: the drug effect of Radix Scutellariae extract 1 part, Fructus Forsythiae extract 2 parts, the Rhizoma Atractylodis Macrocephalae 10 parts is best.