TY  - JOUR
T1  - Isolation of Pathogenic Bacteria Causing Mastitis from Subclinically Infected Crossbreed
Dairy Cows in Sebeta Town, Central Ethiopia
AU - Lelisa, Kumela AU - Sombo, Melaku AU - Belihu, Kelay AU - Rufael, Tesfaye AU - Asmare, Kassahun 
JO  - Veterinary Research
VL  - 14
IS  - 1
SP  - 1
EP  - 6
PY  - 2021
DA  - 2001/08/19
SN  - 1993-5412
DO  - vr.2021.1.6
UR  - https://makhillpublications.co/view-article.php?doi=vr.2021.1.6
KW  - Bacterial isolates
KW  -CMT
KW  -Sebeta
KW  -sub-clinical mastitis
AB  - The flourishing markets oriented dairy farms in
urban setups in Ethiopia are constrained by mastitis. In
Ethiopia, a number of studies have shown a range of
bacterial pathogens causing mastitis as dominant
pathogenic species. This survey was designed to estimate
the prevalence and identify the major bacterial pathogens
involved in sub clinical mastitis in and around Sebeta
area. One hundred thirty crossbred lactating dairy cows
were sampled in 10 intensive farms. Following clinical
assessment of the udder and teat, milk screening was done
using Californian Mastitis Test (CMT). Consequently,
bacteriological examination was conducted for
identification and characterization of pathogens involved.
The study revealed that out of the 520 quarters examined,
16 of them were blind (3.2%) and 504 were functional.
From a total of 504 quarters tested for subclinical mastitis
387 (76.8%) were positive. The animal level prevalence
of subclinical mastitis was 90.8% (N = 118/130). The
bacterial isolates identified from CMT positive
sub-clinically affected udder includes <i>Staphylococcus
aureus</i> (27.2%), <i>Staphylococcus epidermidis</i> (19.1%),
<i>Staphylococcus intermedius</i> (16.9%), <i>Staphylococcus
hyicus</i> (2.9%), <i>Streptococcus agalactiae</i> (11.8%),
<i>Streptococcus dysagalactiae</i> (5.9%), <i>Corynebacterium
bovis</i> (5.9%), <i>Actinomyces pyogenes</i> (5.88%),
<i>Streptococcus uberis</i> (3.7%) and <i>Micrococcus</i> species
(0.8%). The observed high prevalence along with multiple
potential pathogens identified is a clear indication how
serious the problem is both in the studied farms and
probably beyond. Thus, researchers would like to
emphasize the need for urgent intervention to control the
diseases and prevent the associated loss.
ER  -