TY  - JOUR
T1  - Investigation of Bovine Mastitis Pathogens in Two Northwestern Provinces of China from 2012-2014
AU - Wang, Ling AU - Yang, Feng AU - Wei, Xiaojuan AU - Luo, Yongjiang AU - Zhou, Xuzhen AU - Guo, Wenzhu AU - Niu, Jiangrong AU - Guo, Zhiting 
JO  - Journal of Animal and Veterinary Advances
VL  - 14
IS  - 8
SP  - 237
EP  - 243
PY  - 2015
DA  - 2001/08/19
SN  - 1680-5593
DO  - javaa.2015.237.243
UR  - https://makhillpublications.co/view-article.php?doi=javaa.2015.237.243
KW  - Bovine mastitis
KW  -prevalence
KW  -predominant pathogen
KW  -dairy cow
KW  -CM
AB  - The objective of this study was to determine the prevalence of mastitis, identify the frequency alteration of predominant pathogens related to clinical and subclinical mastitis in Gansu and Ningxia Province of China. The 29 dairy farms comprising 2000 lactating cows enrolled from April 2012 to November 2014 of which 43.0% (860/2000) were found positive for mastitis by physical examination and Lanzhou Mastitis Test (LMT), the prevalence of Clinical Mastitis (CM) and Subclinical Mastitis (SCM) at cow level were 5.10 and 37.90%, respectively. The proportion of samples contained major pathogens were 97.60% and 871 isolates obtained from 860 milk samples. The common isolates from CM were <I>E. coli</I> (26.89%), <I>S. agalactiae</I> (21.01%) and <I>S. aureus</I> (19.33%) while from SCM were <I>S. agalactiae</I>, <I>S. dysgalactiae</I> and <I>S. aureu</I>, accounted for 30.45, 18.62 and 14.89%, respectively. The contagious pathogens had showed to predominate over the environmental pathogens and the <I>Streptococcus</I> sp. was found the predominant species which remains a significant cause of mastitis in local cattle herds.
ER  -