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Research Detail

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M. M. Hasan
Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

S. Talukder
Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. A. Maghla
Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

K. N. Shithi
Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

S. Akter
Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

N. Hasan
Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. A. Islam
Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. A. Islam
Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. R. Alam
Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. N. Mia
Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

S. N. Trisha
Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

R. A. Lima
Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

S. Rana
Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. Kamruzzaman
Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. S. Hossain
Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

B. H. Mehedi
Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

H. A. Rifat
Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. A. Ehsan
Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. T. Islam
Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

 A cross sectional study was conducted to characterize the present situation of milk production, to identify the existing socioeconomic status of dairy farmers, and to determine the prevalence of subclinical mastitis (SCM) in dairy cows. A total of 229 smallholder dairy farms in the surrounding areas of Bangladesh Agricultural University were investigated during January to March 2015. Direct interview with farmers, and physical examination of the cows were done to collect farm and cow level data. It appeared that all of the farmers were involved in other occupations besides dairying, in which almost half of them (48.29%) belong to agricultural cultivation. Educational level of the most of the farmers was illiterate to primary level (68.5%). The average annual income of farm owners was Tk. 219109.17, of which around half of the total income comes from livestock. Average milk production of the farms was 7.73 L/day with a range of 0.5 to 305 L. Milk samples were collected from randomly selected 101 milking cows and were subjected to somatic cell count (SCC) by automatic nucleocounter machine. The overall prevalence of subclinical mastitis was 20.79%. The prevalence of subclinical mastitis was comparatively higher in Sahiwal cows (42.86%), cows that yield >5 to 10 L milk per day, and in late lactation stage (>180 days). 
 
 

  Subclinical mastitis, Somatic cell count, Prevalence, Dairy, Socioeconomic status
  Mymensingh district, Bangladesh
  00-01-2015
  00-03-2015
  Animal Health and Management
  Cow, Milk

(i) to identify the present status of milk production along with the management aspects of small scale dairy farmers in surrounding areas of Bangladesh Agricultural University, (ii) to investigate the socioeconomic status of dairy farmers in that area, and (iii) to estimate the prevalence, and to find out the risk factors of subclinical mastitis in dairy cows of that area. 

Study area, animals and management:  A cross sectional study was carried out during the period of January to March of 2015 at Mymensingh district, the north-east part of Bangladesh; which is located at longitude 90.45°E, latitude 24.70°N and altitude 15.52 m. In this study a total of 229 household dairy farmers having 365 milch cows were selected by random sampling from 9 villages. The dairy cattle were kept under different housing and management practices in the rural areas selected in, and surroundings of Bangladesh Agricultural University area. In this region, dairy cattle are mainly reared for milk and economic purpose. Data collection: A semi structured questionnaire was developed to gather information on dairy management approaches and socioeconomic condition of dairy farmers at the selected areas. During the study, information about different variables (i.e. age, breed, lactation stage and milk yield) from individual animal was recorded by a questionnaire through farmers interview. The data were collected by Magpi android data collection application (Version-5.4.1) with Global Positioning System (GPS). Sample collection: From the data of 365 lactating cows, 101 were selected randomly for subclinical mastitis test. The tip of a teat was mopped several times with sterile gauge soaked in 70% alcohol and allowed to dry. A few streams of foremilk were discarded and 5-10 ml of milk sample from each cow was collected aseptically in sterilized screwcapped test tubes with tag. Milk samples were transported to the laboratory of the Department of Medicine, Bangladesh Agricultural University in ice boxes (approximately 4 ºC) and preserved at 4 ºC until further laboratory analysis (usually within 24 hours of collection). The milk samples were prepared for somatic cell count according to the procedure described by Sumon et al. (2017) on the next day of sampling. Detection of subclinical mastitis: In a study, it was appeared that SCC was the most reliable test and closest to the bacteriological results (Badiuzzaman et al., 2015). So this study used SCC technique to test subclinical mastitis. The SCC (cells/ml) for the milk samples was determined using Nucleo Counter SCC-100 (Coulter electronic–Chemometec A/s, Denmark) following the protocol of Saleh and Faye (2011). In brief, mixing of the representative cell sample (milk) was done with equal volume (50µl) of lysis buffer. The Nucleo Cassette was loaded with the lysate solution after 30 seconds vortexing and then placed in the instrument, then pressed the “Run” key. After 30 seconds, the cell count was presented on the instrument display. The cows had SCC>200×103/ml were considered as SCM positive. Data Analysis: The data were extracted from Magpi server as MS Access file. Data analysis was carried out using Epi Info™ (Epi Info™ is a trademark of the Centers for Disease Control and Prevention (CDC) used version 7.1.5.2) to generate descriptive statistics (frequencies/proportions) related to the farmer’s education, occupation, annual income, dairy management, milk production status, treatment, disease prevalence, etc. 

  Bangl. J. Vet. Med. (2018). 16(1): 71–79 ISSN: 1729-7893 (Print), 2308-0922 (Online)
  
Funding Source:
1.   Budget:  
  

In conclusion, this study showed that the overall prevalence of subclinical mastitis was 20.79% in lactating cows and their breeds, level of milk yield and stages of lactation are the important host factors associated with the prevalence of SCM in cows. Considering all the studied parameters, it can be concluded that dairy farming is a profitable practice that may improve socioeconomic status. Hence, this study suggests that proper operation should be directed to develop management practices as well as awareness of SCM among the dairy farmers with a view to increase milk production. 
 

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