Abstract
The present investigation was carried out to study the prevalence of mastitis in 136 Holstein cows from a subtropical province of South Korea. Out of 527 milk samples studied, 22.6 % were found positive for mastitis. On animal level, prevalence was estimated at 55.2 %. Late lactating cows were at higher risk for mastitis development as compared to those in early and mid lactations. The study revealed that the risk of an increase in somatic cell count (SSC) and mastitis increased with advanced age and in animals with higher parity. The highest infection rate of 71.4 % was found in the age group >9 years followed by cows with higher than fifth parity (65.5 %). On severity and quarter basis, cows of <3 years of age had higher occurrence (12.5 %) of severe mastitis. From the present study, it may be concluded that a positive relationship exists between increased prevalence of mastitis and high SCC and the advance in age and parity of Holstein cows.
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Acknowledgments
This study was supported by a grant from the Next-Generation BioGreen 21 Program (no. PJ009032022012), Rural Development Administration, Republic of Korea; hence, the authors are thankful to this organization. The authors are equally thankful to the Indian Council of Agricultural Research, New Delhi, India for providing fellowship to the first author.
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Sharma, N., Kang, T.Y., Lee, SJ. et al. Status of bovine mastitis and associated risk factors in subtropical Jeju Island, South Korea. Trop Anim Health Prod 45, 1829–1832 (2013). https://doi.org/10.1007/s11250-013-0422-3
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DOI: https://doi.org/10.1007/s11250-013-0422-3