Invasive Species Compendium

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Abstract

Public health hazard associated with consumption of milk from cattle infected with Subclinical Mastitis in Assiut Governorate.

Abstract

787 random milk samples were collected from cows and buffaloes at different localities and farms in Assiut Governorate, Egypt. The samples were composed of 379 and 408 quarter milk samples from 105 cows and 105 buffaloes. The collected milk samples were analysed using California Mastitis Test (CMT) and Modified Whiteside Test (MWST) for mastitis detection. Results revealed that subclinical mastitis (SCM) in cows and buffaloes under CMT and MWST were 59.05 and 60.95%, and 33.33 and 33.33%, respectively. The incidence of SCM in cows and buffaloes under bacteriological and mycological examinations were 60.95 and 28.57%, and 34.29 and 0.95%, respectively. The most common bacteria causing SCM in cows were Staphylococcus aureus, coagulase negative staphylococci (CNS), Streptococcus pyogenes, Streptococcus agalactiae, Streptococcus dysgalactiae, Escherichia coli, Klebsiella pneumoniae, Citrobacter diversus and Proteus mirabilis. Staphylococcus aureus, CNS, Streptococcus pyogenes, Streptococcus dysgalactiae and Corynebacterium bovis were observed in buffaloes. The most common yeasts and moulds causing SCM in cows were Candida albicans, Candida tropicalis, Candida krusei, Candida sp., Geotrichum candidum, Aspergillus niger, Cladosporium cladosporioides, Fusarium proliferatum, Penicillium duclauxi, Rhodotorula sp., Stachybotrys elegans, Pyssochlamys nivea, Alternaria alternata, Stemphylium botryosum, Thermoascus aurantiacus, Trichosporon cuteanum and sterile mycelium. However, Phialophora sp. was the only isolated microorganism from buffaloes at 0.25%.