A kind of oil emulsion vaccine of cattle and sheep foot rot and preparation method thereof
A technology for hoof rot and oil emulsion, which is applied in pharmaceutical formulations, medical preparations with non-active ingredients, and non-active ingredients in oil/fat/wax. To achieve the effect of inhibiting heat-resistant spores, reducing clinical adverse reactions, and reducing culture costs
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0024] Embodiment 1: the preparation of oil emulsion vaccine of cattle and sheep foot rot
[0025] 1. Strain: Fusobacterium necroptosis has been disclosed in the following literature: Xie Jing, Liao Dangjin, Wang Ming, He Wanping, Cao Ye, Zhao Sujun, Zeng Wei, Li Jiangling, Pan Baoliang, Ye Yonggang, Luo Dandan. "Chinese Veterinary Medicine Journal, Investigation of Main Pathogenic Bacteria of Dairy Cattle Foot Rot Disease in Sichuan. 2013, 4:35-37; Xie Jing, Liao Dangjin, Wang Ming, Ye Yonggang, Cao Ye, Zhao Sujun, Li Jiangling, Luo Dandan, Wang Qiushi, Pan Baoliang. Isolation, identification and biological characteristics analysis of Sichuan strain of Fusobacterium necroptosis, Animal Husbandry and Veterinary Medicine, 2013, 45(3):64-66.
[0026] Fusobacterium necroptosis was isolated from a large-scale dairy farm in Sichuan Province. It is a Gram-negative polymorphic bacterium. The tissue smear or young bacteria are filamentous, and the bacterial cells are shorter individua...
Embodiment 2
[0051] Embodiment 2: Comparative analysis of the finished product of oil emulsion vaccine of cattle and sheep foot rot
[0052] 1. The finished product of cattle and sheep foot rot oil emulsion vaccine prepared in this embodiment
[0053] (1) Physical properties
[0054] Appearance: Milky white emulsion.
[0055] Dosage form: water-in-oil type. Take a clean straw, suck a small amount of vaccine and drop it into cold water, except for the first drop, the rest will not spread.
[0056] Stability: Take 10ml of the vaccine and put it into a conical centrifuge tube, centrifuge at 4000r / min for 15 minutes, the water precipitated at the bottom of the tube should be ≤0.5ml, and the test result is 0.05ml. Place the oil emulsion at 4°C, room temperature, and 37°C to observe its demulsification, see Table 3 below.
[0057] Table 3-Oil emulsion stability observation
[0058]
[0059]
[0060] Viscosity: use a 1ml straw (the inner diameter of the lower mouth is 1.2mm, and the in...
Embodiment 3
[0087] Embodiment 3: immune protection test
[0088] 15 sheep in the control group were not immunized, and 15 sheep in the experimental group were subcutaneously inoculated with 2ml of inactivated vaccine, and the second immunization was done on the 22nd day. On day 35, use 7×10 9 / pcs, 3.5×10 8 / only and 3.5×10 7Each sheep with different doses of bacterial solution was challenged with the virus in the corresponding experimental group and control group sheep, observed for 7 days, and recorded the hoof infection of the sheep. According to the sheep hoof damage score after the attack, when the attack dose is 7×10 9 For each mouse, the total score of hoof damage in the immune group was reduced by 4 points, and the protection efficiency was 26.67%; when the challenge dose was 3.5×10 8 per mouse, the total score of hoof damage in the immune group was reduced by 6 points, and the protection efficiency was 40%. When the challenge dose was 3.5×10 7 / only, the incidence rate of t...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com