Contribution à l'étude des infections intramammaires de la vache laitiere dans l'Est algeriens

الموضوعات

علوم بحتة وطبيعية

روابط وملفات

التعريف والنوع

رقم الوثيقة

ef7c77ed-4e0b-46e8-a7ce-196e4b39df9c

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل دكتوراة

نوع الملف

pdf text

أسماء الملفات

794752_1.pdf

بيانات النشر

ألقاب المؤلفين

[{"name_ar":" F. Smati","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":" Omar Bouaziz","title_ar":"اعداد","title_en":"Preparation"}]

اللغة

French

المصدر والدورية

اسم المصدر

Contribution à l'étude des infections intramammaires de la vache laitiere dans l'Est algeriens

المحتوى والصفحات

عدد الصفحات

0

ترجمة الملخص

The control of the infections intramammaires represents a paramount stake for thedairy stockbreeders. To fight against this pathology passes by a knowledge of thebacteria in causes and their epidemiology.The present study related on the one hand, on the evaluation of the prévalence ofthe germs responsible for the clinical mastitis and the study of some aspects of theirepidemiology in 35 dairy herds and on the other hand, to evaluate the prévalenceand the etiology of the subclinic mastitis in the cows at the end of the lactation infour dairy herds. The performance of the CMT to identify subclincal mastitis at theend of the lactation was evaluated. The in vitro antimicrobial susceptibility of bacteriaisolated from cow milk samples was tested. Treatment of dairy cows at drying offhas been practiced.Results obtained showed :A strong prévalence (32,6%) of the clinical cows with clinical mastitis. Thebacteriological analysis of 252 milk samples milk showed : 28,4% of Staphylococcusaureus, 21,6% of Eschérichia coli, 13,7% of Streptococcus agalactiae. Thecoagulase negative staphylococci with a frequency of 10,8% seem increasinglyaccused in the clinical mastitis.The prévalence of the cows with subclnical mastitis at the end of the lactation is73,6% and the quarters 40,3%. The frequency of the germs responsible for subclnicalmastitis was estimated on 121 cows at the end of the lactation. Out of he 464 milksamples, 59,7% were bacteriological negative. The germs observed most often are :Staphylococcus aureus (30,9%), coagulase negative staphylococci (25,9%),Streptococcus agalactiae (23,2%) and Eschérichia coli (15,9%).Staphylococcus aureus is the predominant bacterial pathogen in subclinical andclinical mastitis. Environmental pathogens are not to neglect in the cause of theclinical mastits.Moreover, this study revealed the presence of antibiotic residues in 17,1% of the 35milk samples analyzed.The in vitro antimicrobial susceptibility of bacteria isolated from cow milk samplesshowed high resistance to penicillin, ampicillin, oxacillin, tetracyclin, streptomycinand erythromycin.During the dry period, the treatment eliminates 91% of pathogenic organism. Therate of new infections prevented is 88%.

إشراف وإعداد

الإشراف

F. Smati

الإعداد

Omar Bouaziz

الاقتباسات الببليوغرافية