<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>This study was conducted to investigate the prevalence of subclinical mastitis and its contagious and environmental bacterial causes in dairy cows in Jos Metro polis of Plateau State. A total of 208 milk samples were collected aseptically from 52 lactating cows and subjected to the California Mastitis Tests (CMT). Milk samples were transferred into peptone water broth for enrichment, followed with bacteriological assays and biochemical identification of bacteria. Using R Commander version 3.6.2, data such as: breed, age, parity, lactation, and management system of cows were collected, and analysed to determine their relationship with bovine subclinical mastitis. Out of 208 quarter milk samples collected from 52 cows, 35.09 % showed subclinical mastitis. While the Cross-breed cows had 15 % subclinical mastitis recorded, the White Fulani had 78.13 %. Cows of the age 3 to 5 years had the highest prevalence of mastitis, while cows with 4 to 6 calves showed the highest prevalence in the parity category. The early lactation stage of these cows showed the highest prevalence. The environmental bacteria isolated where <italic>E. coli, K. pneumoniae, K. oxytoca, C. freundii, K. aerogenes,</italic> and <italic>Proteus</italic> sp. with <italic>E. coli</italic> having the highest frequency of 40.86 %, followed by <italic>K. Pneumoniae</italic> with 17.79 %. The contagious bacteria isolated were <italic>S. aureus, S. agalactiae,</italic> and <italic>Corynebacterium</italic> sp. with <italic>S. aureus</italic> occurring most with 69.71 %. This study concluded that the prevalence of subclinical mastitis is high in cows in the study area. It was also discovered that the breed of cow, age of cow, parity number, stage of lactation and husbandry systems have an impact on subclinical mastitis. <italic>S. aureus</italic> with the highest frequency, indicated that contagious microbes have more effect on subclinical mastitis than environmental microbes.</p>
</abstract>

This study was conducted to investigate the prevalence of subclinical mastitis and its contagious and environmental bacterial causes in dairy cows in Jos Metro polis of Plateau State. A total of 208 milk samples were collected aseptically from 52 lactating cows and subjected to the California Mastitis Tests (CMT). Milk samples were transferred into peptone water broth for enrichment, followed with bacteriological assays and biochemical identification of bacteria. Using R Commander version 3.6.2, data such as: breed, age, parity, lactation, and management system of cows were collected, and analysed to determine their relationship with bovine subclinical mastitis. Out of 208 quarter milk samples collected from 52 cows, 35.09 % showed subclinical mastitis. While the Cross-breed cows had 15 % subclinical mastitis recorded, the White Fulani had 78.13 %. Cows of the age 3 to 5 years had the highest prevalence of mastitis, while cows with 4 to 6 calves showed the highest prevalence in the parity category. The early lactation stage of these cows showed the highest prevalence. The environmental bacteria isolated where E. coli, K. pneumoniae, K. oxytoca, C. freundii, K. aerogenes, and Proteus sp. with E. coli having the highest frequency of 40.86 %, followed by K. Pneumoniae with 17.79 %. The contagious bacteria isolated were S. aureus, S. agalactiae, and Corynebacterium sp. with S. aureus occurring most with 69.71 %. This study concluded that the prevalence of subclinical mastitis is high in cows in the study area. It was also discovered that the breed of cow, age of cow, parity number, stage of lactation and husbandry systems have an impact on subclinical mastitis. S. aureus with the highest frequency, indicated that contagious microbes have more effect on subclinical mastitis than environmental microbes.

Bacterial Etiologies of Subclinical Mastitis in Cows Jos Metropolis, Nigeria

Department of Public Health and Epidemiology

Folia Veterinaria

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

{"article-title":"Bacterial Etiologies of Subclinical Mastitis in Cows Jos Metropolis, Nigeria"}

This study was conducted to investigate the prevalence of subclinical mastitis and its contagious and environmental bacterial causes in dairy cows in Jos Metro...

Bacterial Etiologies of Subclinical Mastitis in Cows Jos Metropolis, Nigeria

Publié en ligne: 30 déc. 2022

Pages: 49 - 55

Reçu: 07 sept. 2022

Accepté: 21 oct. 2022

DOI: https://doi.org/10.2478/fv-2022-0037

Mots clés
bovine, CMT, contagious bacteria, environmental bacteria, subclinical mastitis

© 2022 Anueyiagu K. N. et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Bacterial Etiologies of Subclinical Mastitis in Cows Jos Metropolis, Nigeria

Publié en ligne: 30 déc. 2022

Pages: 49 - 55

Reçu: 07 sept. 2022

Accepté: 21 oct. 2022

DOI: https://doi.org/10.2478/fv-2022-0037

Mots clésbovine, CMT, contagious bacteria, environmental bacteria, subclinical mastitis

© 2022 Anueyiagu K. N. et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Mots clés
bovine, CMT, contagious bacteria, environmental bacteria, subclinical mastitis