Risk Factors Associated With Prevalence of Brucellosis in Black Bengal Goats in Bangladesh

Abstract

A total of 242 milk and 208 blood samples of goat were collected from three organized goat farms and surrounding rural areas of Bangladesh Agricultural University to determine the prevalence and associated risk factors of brucellosis in Black Bengal goats during the period from December 2008 to September 2009. Milk samples were screened by Milk Ring Test (MRT) and serum samples by Rose Bengal test (RBT) and Micro Agglutination Test (MAT) for detection of brucella specific antibody in milk and blood respectively. The overall prevalence was recorded as 13.64% in milk by MRT; 3.85% and 3.37% in serum by RBT and MAT respectively. About 21.21(7/33) % and18.18 (6/33) % of MRT positive goat showed positive reactions in RBT and MAT respectively. Does aged up to 4 years had lower prevalence (3.70%) of brucellosis than those aged over 4 years (12.50%). About 2.1 (odds ratio, OR = 2.1; 95% CI: 1.21-4.53) and 47.1(OR = 47.1; 95% CI: 5.3-416.6) folds increased odds of seropositivity of brucellosis were observed in aborted and placental retention cases respectively. Significantly (p<0.05) higher prevalence of brucellosis was recorded at late lactation stage (17.94%) than those were in mid (16%) and early lactation stage (11.76%). A significantly higher odds of seropositivity of brucellosis was observed in does (OR = 23; 95% CI: 3.08-173.62). About 7 folds (OR = 6.8; 95% CI: 1.13-5.32) increased odds of seropositivity was observed in pregnant does.

Serological, cultural, and molecular evidence of Brucella infection in small ruminants in Pakistan

“…A higher seroprevalence in female sheep and goats has been reported from the district of Peshawar, Pakistan [22], whereas higher seropositivity in male sheep and goats has been reported in goats in Bangladesh and Mexico [23,24]. In the present study, the number of male animals was lower than the number of female animals because female animals were served by positive rams of the same herd or were of older age, increasing the risk of getting infected.…”

Seroprevalence of Brucellosis and its Associated Risk Factors in Sheep and Goat in the Farms and Slaughter House in Mymensingh, Bangladesh

“…This result supports the findings of Islam et al (2010). The present study reported higher prevalence of brucellosis in case of female sheep and goats than male but the difference was not statistically significant (p > 0.05).…”

“…A study conducted at Gaibandha district of Bangladesh reported 3.39% prevalence of brucellosis in sheep (Rahman et al, 2012). Islam et al (2010) recorded 3.85% prevalence of brucellosis in black Bengal goat on the farms located at Savar and Rajshahi in Bangladesh. A study conducted in Saudi Arabia reported 11.6% prevalence of brucellosis in small ruminants (Radwan et al, 1983).…”

“…So, there is a chance of inter-species transmission of brucellosis from cattle to sheep and goat and vice versa is more likely in the context of Bangladesh (Akhter, 2012). Several investigations recorded the seroprevalence of brucellosis in sheep and goat in Bangladesh (Uddin et al, 2007;Islam et al, 2010;Rahman et al, 2011;Rahman et al, 2012). However, to our knowledge, there is no report on the seroprevalnce of brucellosis in sheep and goat on the farms and slaughter house in Mymensingh.…”

Brucellosis in human and domestic animals in Bangladesh: A review

“…A higher incidence of the disease was observed in goats with reproductive disorders (Rahman et al, 1988). Overall prevalence of brucellosis in goats were 1.7% in Mymensingh and Dhaka districts, 0% in Dhaka and Lalmonirhat districts, 3.9% in Mymensingh district, 5.8% in Bogra and Mymensingh districts, 6.7% in Bagherhat districts, 0% in Bogra district, 4% in Gaibandha district and 2.9% in Sirajgonj district (Uddin et al, 2007a, b;Das et al, 2008;Islam et al, 2010;Rahman et al, 2011bRahman et al, , 2012b. Potential risk factors for brucellosis in goats included age, sex, pregnancy status, management system (concrete floor versus mud floor; flock rearing vs. individual rearing; non grazing versus free grazing; mixed with cattle versus without cattle; and rural versus farm goats) and reproductive disorders (abortion vs. retained placenta).…”