FIELD ASSESSMENT OF REPRODUCTIVE DISORDERS OF DAIRY CATTLE IN DINAJPUR DISTRICT

Abstract

A cross sectional study was conducted to identify the prevalence of major reproductive disorders of dairy cattle and the possible risk factors in selected upazila of Dinajpur district of Bangladesh from January-December 2017. The primary data were collected directly from the dairy cattle owners by using questionnaire. The diagnosis of reproductive disorders was made on the basis of history, clinical signs and response to treatment. A total number of 375 dairy cattle examined of which 118 (31.47%) were found infested with different diseases. The highest frequency distribution was reproductive disorders (35.59%) and lowest frequency distribution was surgical affection (2.54%) among the different diseases. Among all the reproductive disorders, prevalence of repeat breeding syndrome was found to be the highest (30.95%) and anestrus was the second (28.57%) common reproductive disorder. The prevalence of retained placenta, abortions, dystocia, uterine prolapse, endometritis and vaginal prolapse was 9.52%, 9.52%, 11.90%, 2.38%, 4.76% and 2.38%, respectively. There was no significant differences (p>0.05) on the prevalence of reproductive disorders among the breed studied. However, the highest prevalence was found in local breed (16.36%) and lowest (7.14 %) in SL×L crossbred. The local breed shown significantly (p<0.05) highest prevalence of anestrus compare to SL×L and F×L crossbred. The higher prevalence of repeat breeding syndrome (4.0 %) and dystocia (2.0 %) were found in F×L crossbred. There was no significant (p>0.05) effect of age on the prevalence on reproductive disorders. However, highest prevalence of reproductive disorders was observed in above 2 to 4 years dairy cattle. The highest prevalence of anestrus and repeat breeding syndrome was found in cattle of above 4 to 6 years and 0 to 2 year age group, respectively. There was no significant (p>0.05) effect of parity on the prevalence on reproductive disorders. However, the highest prevalence of reproductive disorders was observed in 2nd parity. The significantly (p<0.05) highest prevalence of anestrous (17.14%) was found in poor condition compare to fair and very good condition. The information gathered from the results of this study would be helpful for the dairy farmer to develop the strategies of dairy farm efficacy.