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An epidemiological study of bovine mastitis and associated risk factors in and around Eltarf District, northeast Algeria

Abderrazek Hocine ; Department of Veterinary, Faculty of Naturel and life Science, Chadli Bendjedid University, Route Matrouha, Eltarf, Algeria
Riad Bouzid ; Department of Veterinary, Faculty of Naturel and life Science, Chadli Bendjedid University, Route Matrouha, Eltarf, Algeria
Hamida Talhi ; Laboratory of Statistic and Probability, Badji Mokhtar University, Sidi Ammar, Annaba, Algeria
Djamel Khelef ; High National Veterinary School of Algiers, Alalya, Algeria

Puni tekst: engleski pdf 557 Kb

str. 553-564

preuzimanja: 427



A cross-sectional study was undertaken to determine the prevalence of bovine mastitis, and to assess potential risk factors among lactating cows, both local and crossbreeds, in and around Eltarf town in northeast Algeria. A total of 324 lactating cows were included in the survey, examined for mastitis by clinical examination of the udder and teats and tested using the California Mastitis Test (CMT) to determine clinical and subclinical mastitis. Data was collected in a questionnaire during the farm visit. The overall prevalence was 41.66% (135/324), of which 9.80% (32/324) were clinical and 31.79% (103/324) subclinical cases. Out of 1296 quarters examined, the prevalence rate was 41.04% (532/1296), where 9.25% (120/1296) were clinical and 31.79% (412/1296) subclinical aspects of mastitis. Right Hind teats (RH) showed the highest rate of inflammation (51.54%), followed by the Left Hind (LH) teat in second place (44.44%), Right front quarter (RF; 36.11%) and lastly Left Front (LF; 32.09%). The relationships of risk factors with mastitis status were determined using Chi-square analysis, associations between mastitis and the independent variables, including parity and hygienic condition of the udder, teat and housing of cows were statistically significant (P<0.05) in the univariate analysis. Mastitis prevalence was significantly higher in cows having delivered four calves (87.50%) comparing to cows with less than four calves (28.16%), irrespective of lactation stage. Significantly higher mastitis prevalence was also observed in poor hygienic conditions (38.82%; P<0.05) than good hygienic condition (22.07%). Other risk factors such as breed, age, lactation stage, rearing system, housing system and tick control infestation did not differ significantly (P>0.05). This study indicated that mastitis is a prevalent disease and a serious problem across herds in and around the Eltarf district in Algeria. Further detailed epidemiological, microbiological, and economic analysis studies are required at the national level to tailor existing control and prevention strategies. Regular surveillance measures are recommended.

Ključne riječi

Algeria; cows; mastitis; prevalence; risk factors

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Podaci na drugim jezicima: hrvatski

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