Author/Authors :
Uddin Bhuiyan, Mahfuz Department of Pathology - Bangladesh Agricultural University, Mymensingh, Banglad , Mohammad Shahada, Hossain Rangpur Recreation Garden and Zoo - Department of Livestock Services, Rangpur, Bangladesh , Swapan Chakma, Shisir Duck Rearing Unit - Department of Livestock Services, Netrokona, Bangladesh , Islam, Fakhrul Local Government Engineering Department, Itna, Kishoregonj, Bangladesh , Islam, Rafiqul Department of Pathology - Bangladesh Agricultural University, Mymensingh, Banglad , Islam, Taohidul Department of Medicine - Bangladesh Agricultural University, Mymensingh, Bangladesh , Mahfuz, Shad Department of Animal nutrition - Sylhet Agricultural University, Sylhet, Bangladesh
Abstract :
Subclinical mastitis (SCM) is an over emphasized form of mastitis causes great economical loss in dairy
farms due to reduction in milk production. The aim of the study was to estimate the prevalence of subclinical mastitis
in crossbred (local Zebu x Holstein Friesian or Sahiwal or Sindhi) and indigenous lactating cows. The study was carried
out in different small scale dairy farms in Bijoynagar Upazila under Brahmanbaria district, Bangladesh. Bijoynagar
Upazila consists of 10 unions. A total of 400 milk samples, 40 from each union, were screened for SCM by California
Mastitis Test (CMT). A total of 115 cows were found positive for SCM. The overall prevalence of SCM in lactating
cows was 28.75% of which 30% at Chandura union, 32.5% at Paharpur union, 20% at Potton union, 27.5% at Bodonti
union, 32.5% at Isapura union, 25% at Chorislampur union, 37.5% at Horospur union, 22.5% at Chompoknagar
union, 32.5% at Singerbil union and 25% at Bisnopur union. The prevalence of SCM significantly increased with
age and parity of cows in Bijoynagar upazila under Brahmanbaria district, Bangladesh. This study may help the dairy
farmer to take necessary precursors against SCM and recover economic losses causes by SCM
Keywords :
Subclinical mastitis , Prevalence , Breed , Age , Dairy cows
