8 results about "Streptococcus uberis" patented technology

The present application relates to the field of microbial technology, in particular to bacillus subtilis BS-1 and its application in water buffalo silage feed, the strain BS-1 of the present application has good bacteriostatic activity on escherichia coli, salmonella and streptococcus uberis, after mixing and fermenting according to a specific proportion with orange peel and cassava residue, the bacteriostatic spectrum of the obtained silage feed is significantly enhanced, which can simultaneously inhibit escherichia coli, campylobacter jejuni, salmonella, streptococcus uberis, staphylococcus aureus and streptococcus agalactiae that cause diarrhea and mastitis. In the feed, after mixing 60%-75% of orange peel and 25%-40% of cassava residue, the crude protein content of the fermentation product is significantly improved, and the fiber content is reduced. Feeding test shows that the feed can significantly improve the milk yield and milk quality of lactating water buffalo, and effectively alleviate diarrhea. The present application provides a safe, efficient and nutritious silage feed with disease prevention function.

The subject matter of the invention is an immunizing and / or therapeutic preparation for use in the prevention and / or treatment of udder inflammation (mastitis) in cows, which contains IgY antibodies isolated from chicken egg yolks, directed against Escherichia coli, Klebsiella pneumoniae, Klebsiella oxytoca, Staphylococcus aureus, Streptococcus uberis and Streptococcus dysgalactiae. The subject matter of the invention is also a method for obtaining the above preparation.

The present invention relates to a protein comprising a sequence having a percentage identity of at least 70% with the sequence SEQ ID NO: 2, in particular to the protein of sequence SEQ ID NO: 2 and its use in the detection of the bacterium Streptococcus uberis. It also relates to a lateral flow chromatography (LFA) strip comprising said protein.[Fig. **]

The invention discloses a compound cefquinome sulfate mammary gland perfusion agent and a preparation method thereof, and the compound cefquinome sulfate mammary gland perfusion agent comprises the following components in parts by mass: 60mg of cefquinome sulfate, 90mg of inositol, 80mg of a suspending aid, 120mg of a wetting agent, 4mg of an antioxidant, and the balance of a non-aqueous solvent, totaling 8g. The main drug in the preparation is a fourth-generation animal special cephalosporin antibiotic-cefquinome sulfate, has a broad-spectrum bactericidal effect and is effective to gram positive and gram negative strains including beta-lactamase-producing strains, and bacteriostasis experiments prove that the preparation has a strong antibacterial effect on various microorganisms causing cow mastitis, and can be used for preventing and treating cow mastitis. The composition especially has special effects on streptococcus uberis, streptococcus dysgalactiae, staphylococcus aureus and the like.

The present invention discloses Bacillus velezinis Bv-con2 and its application in turbot farming, belonging to the field of microbial technology. The strain is deposited in the China Center for Type Culture Collection, with a deposit address of Wuhan, China, a deposit date of December 27, 2024, and a deposit number of CCTCC NO: M 20242926. The present invention is beneficial in that: the strain is non-pathogenic to turbot, has good probiotic potential, and after being fermented into a microbial agent and mixed with and added to turbot, it can not only promote the growth of farmed turbot, increase the activity of trypsin and superoxide dismutase of turbot, improve the structure of turbot intestinal flora, and enhance the level of microbial diversity in the intestinal tract of turbot, but also delay the morbidity and death of turbot caused by infection with Aeromonas salmonicida BHAS-1, Edwardsiella piscicidalis H4-S18, Streptococcus paramammary BH2-4, and Pseudomonas putida PPD2.

The invention relates to the technical field of biology, and particularly discloses streptococcus suis lyase Ply2413 and application thereof. Wherein the amino acid sequence of the lyase is as shown in SEQ ID NO: 1, or the lyase is a functional variant which has the same CHAP catalytic structural domain and SH3b binding structural domain as the lyase and retains broad-spectrum splitting activity. The lyase can be prepared from the coding gene of the lyase through a recombinant expression system. The preparation method comprises the following steps: cloning a gene for coding the lyase, constructing a recombinant expression vector, transforming host cells, carrying out induced expression, purifying to obtain target lyase, and further preparing various antibacterial products. The streptococcus suis lyase Ply2413 disclosed by the invention can be used for preventing and controlling streptococcus suis, staphylococcus aureus and streptococcus uberis infection, and has the advantages of wide lysis spectrum, multiple action targets and good environmental stability; in addition, the preparation method disclosed by the invention has the advantages of simplicity and convenience in operation, high expression efficiency, large-scale production and high technical repeatability.

The invention discloses bacillus velezensis Bv-con2 and application of the bacillus velezensis Bv-con2 in turbot culture, and belongs to the technical field of microorganisms. The strain is preserved in the China Center for Type Culture Collection, the preservation address is Wuhan, China, the preservation date is December 27, 2024, and the preservation number is CCTCC NO: M 20242926. The bacterial strain has the beneficial effects that the bacterial strain has no pathogenicity to the turbot, has good probiotic potential, and is fermented to prepare a microbial inoculum which is mixed with the turbot to be added and fed to the turbot; the growth of the cultured scophthalmus maximus can be promoted, the trypsin and superoxide dismutase activity of the scophthalmus maximus can be improved, the intestinal flora structure of the scophthalmus maximus can be improved, and the intestinal microbial diversity level of the scophthalmus maximus can be improved; and the composition also can delay the morbidity and death of the scophthalmus maximus caused by infection of aeromonas salmonicida BHAS-1, edwardsiella salmonicida H4-S18, streptococcus parasuis BH2-4 and pseudomonas putida PPD2.

The present invention relates to proteins having 70% identity with the protein of sequence SEQ ID NO: 1 or with the protein of sequence SEQ ID NO: 2, in particular relates to the protein of sequence SEQ ID NO: 1 and the protein of sequence SEQ ID NO: 2, and to the use thereof in the capture and detection of the Streptococcus uberis bacterium. The invention also relates to a lateral flow chromatography (LFA) strip comprising at least one of these proteins.