Sharma Neelesh, Kang Tae Young, Lee Sung-Jin, Kim Jin Nam, Hur Chang Hyun, Ha Jong Chul, Vohra Vikas, Jeong Dong Kee
Department of Animal Biotechnology, Faculty of Biotechnology, Jeju National University, Ara-1 Dong, Jeju City, Jeju-Do, 690-756, South Korea.
Trop Anim Health Prod. 2013 Nov;45(8):1829-32. doi: 10.1007/s11250-013-0422-3. Epub 2013 May 29.
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.
本研究旨在调查韩国一个亚热带省份136头荷斯坦奶牛的乳腺炎患病率。在所研究的527份牛奶样本中，22.6%被发现患有乳腺炎呈阳性。在个体水平上，患病率估计为55.2%。与泌乳早期和中期的奶牛相比，泌乳后期的奶牛患乳腺炎的风险更高。研究表明，体细胞计数（SSC）增加和患乳腺炎的风险会随着年龄增长和胎次较高的动物而增加。在年龄大于9岁的年龄组中发现最高感染率为71.4%，其次是胎次高于第五胎的奶牛（65.5%）。从严重程度和乳腺象限来看，年龄小于3岁的奶牛患严重乳腺炎的发生率较高（12.5%）。从本研究可以得出结论，荷斯坦奶牛乳腺炎患病率增加与高SSC之间存在正相关关系，且与年龄和胎次的增加有关。
