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Research
(Published
online: 19-05-2014)
12. Dairy cattle mortality in an
organized herd in Bangladesh - M. M. Hossain, M. S.
Islam, A. H. M. Kamal, A. K. M. A. Rahman and H. S. Cho
Veterinary World, 7(5): 331-336
doi:
10.14202/vetworld.2014.331-336
M. M. Hossain:
College of Veterinary Medicine, Chonbuk National University,
Jeonju, Republic of Korea; 2. Department of Medicine, Sylhet
Agricultural University, Sylhet, Bangladesh.
M. S. Islam: College of Veterinary Medicine, Chonbuk
National University, Jeonju, Republic of Korea; Department of
Medicine, Surgery and Obstatrics, Hajee Mohammad Danesh Science
and Technology University, Dinajpur, Bangladesh.
A. H. M. Kamal: Department of Medicine, Sylhet Agricultural
University, Sylhet, Bangladesh.
A. K. M. A. Rahman: Department of Medicine, Bangladesh
Agricultural University, Mymensingh, Bangladesh.
H. S. Cho: College of Veterinary Medicine, Chonbuk National
University, Jeonju, Republic of Korea.
Received: 17-03-2014, Revised: 10-04-2014, Accepted:
16-04-2014, Published online: 19-05-2014
Corresponding author: M. M. Hossain, email: mukter.sau@gmail.com
Abstract
Aim: The present study was
conducted to find out the causes and factors affecting the dairy
cattle mortality.
Materials and Methods: A retrospective study of dairy
cattle mortality on the Central Cattle Breeding and Dairy Farm (CCBDF)
in Bangladesh was carried out between 1992 and 2007. Sixteen years
of data on mortality of dairy cattle were analyzed for the effects
of year, season, age, sex, breed, and etiology on mortality rate.
Results: The average overall mortality rate was 5.60% and
on average, female cattle (55.71%) were found to die more than
males (44.29%). Mortality was more in crossbred cattle than in
indigenous breed. Higher mortality of cattle was observed in rainy
season (37.98%) followed by winter (33.03%) and summer (28.99%).
The major causes of death were diseases of the respiratory tract,
mainly pneumonia (39.91%). Tuberculosis was the second most common
cause of mortality accounting for 20.58% of deaths. The other
major cause of death was disease of the alimentary tract, mainly
enteritis (15.58%). Other causes of death occurred in the
following frequencies: malnutrition (5.91%), debility (4.43%),
hairball (3.35%), tympanitis (2.56%), babesiosis (2.27%), internal
haemorrhage (2.16%), black quarter (1.76%), and foot and mouth
disease (1.48%).
Conclusions: Of the four potential risk factors
investigated, age was the most important factor and significantly
associated with mortality. During the first month of life, calves
had a higher risk of mortality than adults.
Keywords: Bangladesh, dairy cattle, mortality.
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