Thermo Scientific™ Aesculin Blood Agar (Modified)

Description

Isolate and differentiate bacteria involved in bovine mastitis with Thermo Scientific™ Aesculin Blood Agar (Modified). Due to the relatively high agar content, the medium exhibits a high gel strength so that all samples of a quarter milk can be spread onto a single plate for greater efficiency. The inclusion of blood in the medium ensures the growth of staphylococci and streptococci and permits direct detection of enterococci and S.uberis by means of aesculin cleaving.

Mastitis in cattle causes large losses in dairy farming. After fertility disorders, udder disorders are the second most important cause of death among dairy cattle. The bacteriological investigation of milk samples is the most important diagnostic measure in the detection of udder disorders. Aesculin Blood Agar supports the isolation of most the frequent bacterial pathogens associated with mastitis.

• Supports the growth of staphylococci and streptococci
• Permits direct detection of enterococci and S.uberis
• Has the ready-to-use convenience of prepared media
• Allows all samples of a quarter milk to be spread on a single plate

Over 130 different microorganisms have been isolated from milk samples in connection with mastitis among cattle; however, a relatively narrow spectrum of bacteria number among the most frequent bacterial pathogens: Staphylococcus aureus, Streptococcus agalactiae, S. dysgalactiae and S. uberi, as well as other streptococci and coliform bacteria.

Due to the inclusion of blood, Aesculin Blood Agar ensures the growth of staphylococci and streptococci, and permits direct detection of enterococci and S.uberis by means of aesculin cleaving. The growth of coliform bacteria, pseudomonads and yeasts is also possible on the non-selective agar. In comparison with coliform bacteria, streptococci as well as yeasts grow in smaller colonies than, for example, on Columbia agar with sheep blood.

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