Prevalence and bacterial etiology of subclinical mastitis in goats reared in organized farms

Vet World Vol.11 January-2018 Article-5

Research Article

Veterinary World, 11(1): 20-24

https://doi.org/10.14202/vetworld.2018.20-24

A. K. Mishra¹, Nitika Sharma¹, D. D. Singh², K. Gururaj¹, Abhishek³, Vijay Kumar¹, and D. K. Sharma¹

1. Division of Animal Health, ICAR-Central Institute for Research on Goats, Makhdoom, Farah, Mathura - 281 122, Uttar Pradesh, India.
2. Department of Veterinary Pathology, College of Veterinary Sciences, N.D.U.A.&T., Faizabad - 224 229, Uttar Pradesh, India.
3. Division of Bacteriology, ICAR-Indian Veterinary Research Institute, Izatnagar - 243 122, Uttar Pradesh, India.

Background and Aim: Assessment of the status of subclinical mastitis (SCM) in Jamunapari and Barbari goats in Indian organized farms, the involvement of bacterial pathogens and their sensitivity to antibiotics.

Materials and Methods: A total of 181 composite milk samples were aseptically collected from the apparently healthy Barbari (n=95) and Jamunapari (n=86) goats. The California mastitis test (CMT) and somatic cell count (SCC) were used to diagnose SCM. The milk samples with CMT scores of 0 and +1 were considered as negative, while the samples with the score of +2 or +3 were taken as positive, and further, the positive samples were used for the bacteriological examination. An antibiotic sensitivity test was performed by disk diffusion method using seven commercially available antibiotic discs.

Results: All the samples having CMT score of +2 or +3 demonstrated SCC more than 1 million. Overall, the prevalence of SCM in the goats was assessed as 19.89% (36/181). The prevalence of SCM in Barbari and Jamunapari goats was found as 24.21% (23/95) and 15.12% (13/86), respectively. Out of 11 isolates of Staphylococci, 9 isolates were identified as coagulase-negative Staphylococci (CNS), whereas 2 isolates were found as Staphylococcus aureus. The identified bacterial isolates (n=30) did not show antibiotic resistance.

Conclusion: The current investigation showed the considerable prevalence of SCM among Jamunapari and Barbari goats which may have a negative impact on quantity and quality of the milk. CNS was found as the most prevalent cause of SCM in the goats. Negligible antibiotic resistance was found among the identified udder pathogens. Keywords: California mastitis test, coagulase-negative Staphylococci, goat, somatic cell count, subclinical mastitis.

Keywords: California mastitis test, coagulase-negative Staphylococci, goat, somatic cell count, subclinical mastitis.

How to cite this article: Mishra AK, Sharma N, Singh DD, Gururaj K, Abhishek, Kumar V, Sharma DK (2018) Prevalence and bacterial etiology of subclinical mastitis in goats reared in organized farms, Veterinary World, 11(1): 20-24.

Received: 17-07-2017 Accepted: 16-11-2017 Published online: 13-01-2018

Corresponding author: D. D. Singh E-mail: drdd2005@gmail.com

DOI: 10.14202/vetworld.2018.20-24

Copyright: Mishra, et al. This article is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http:// creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.