Principal Germs Causing Clinical Mastitis in Dairy Cattle Farms in Governorate of Blida (Algeria)
Journal Title: Journal of Animal Science Advances - Year 2013, Vol 3, Issue 1
Abstract
This study focused on characterizing the germs causing the intra-mammary infections in the dairy farms of governorate of Blida (Algeria), by making use of the Speed Mam Test as screening method and conventional bacteriological methods. Out of 78 milk samples originating from quarters with clinical mastitis, we obtained 06 negative cultures (7.69%) and 72 positive cultures distributed in pure cultures (64 or 82.05%) and mixed cultures (08 or 10.25%, of which 7 described 2 germs and 1 was considered contaminated as it described 3 germs). The characterization of the 81 isolated strains revealed the prevalence of the Enterobacteria (25.93%) with high proportion of Escherichia coli (12.34%), followed by Coagulase-Negative Staphylococci (CNS; 20.99%) and Coagulase Positive Staphylococci (CPS; 19.75%), in this case occurring a reversal of the staphylococci prevalence trend (CNS vs CPS) in intra-mammary infections. Streptococci are present at a rate of 9.88% and are being represented by Str. uberis and Str. dysgalactiae. There have also been isolated Enterococcus faecium and Pseudomonas sp. Of all isolated strains, 12 (14.81%) have not been identified, as they did not belong to the researched families and genders. The interpretation of the results as per reservoir type show that the percentage of germs located in the environmental reservoir (Escherichia coli, Klebsiella ornithinolytica; odorifera Serratia, Proteus and Aeromonas hydrophila, Str. Uberis and Enterococcus faecium; 39.49%) is twice as big as opposed to those germs located in the mammary gland reservoir (S. aureus and Str. dysgalactiae; 20.98%). The health condition of the udder at the level of the explored dairy farms point out the prevalence of the clinical mastitis caused by environmental factors over the mammary reservoir (particularly, S. aureus).
Authors and Affiliations
N. Hezil , D. Baazize-Ammi , S. Kebbal , R. Saadaoui , M. Brahim Errahmani
Keywords
Related Articles
- EP ID EP161948
- DOI -
- Views 134
- Downloads 0
Breeding Management Program of Iranian Holstein Farms in Tehran Province
Dairy industry plays an important role in the national economy and in the socio-economic development of Iran. Considering the importance of breeding programs by dairy farmers, a study was conducted at Tehran Province of...
Tropical Velvet Bean (Mucuna Utilis) Leaf Meal as Unconventional Protein Supplement in the Diet of Broiler
This study evaluated the performance of broiler chicks fed graded levels of Mucuna utilis leaf meal (MLM) with an aim to identify alternative low cost feed source that is readily available in the tropical environment. 18...
The Effect of Deep Stacking Broiler Litter on Chemical Composition and In Vitro Gas Production
The effect of deep stacking treatments on chemical composition and gas production of broiler litter were evaluated at Animal Production Research Institute, Egypt. Fresh broiler litter (BL) was collected from a commercial...
Ocorrence of Antibodies Against Bovine Herpesvirus 1 and Bovine Viral Diarrhoea Virus in Crioula Lageana Cattle
Crioula Lageana cattle have been included in the list of species at risk of extinction by FAO due to the small number of breeding animals remaining in the country. This work evaluated the ocorrence of antibodies against...
Weak-Calf Syndrome in a Crossbred Calf: Case Report
An 8-days-old crossbred calf was admitted to teaching veterinary hospital with a history of weakness, unable to stand and not interested to suckle and difficulty in breathing. On the basis of its clinical sign it was dia...