Background: The reproductive physiology of goat is least understood compared to cattle, sheep and pig and most of the description of goat is usually made as if it is identical to sheep. The biometric and histomorphometric analyses of female reproductive system of Black Bengal goats were performed in this study. Methods: During October 2016 to February 2019 a total of 200 female reproductive tracts (50 from each age category of ≤ 6 months (m), 7-12 m, 13-18 m and 19-24 m) were collected and examined from various slaughter houses of Kishoreganj district of Bangladesh. For biometric study the length, width and weight of different segments of female reproductive tracts were measured. In addition, the morphometry of different parts of female genitalia was analyzed at histology. One-way ANOVA with Bonferroni's Multiple Comparison Test was performed to compare between different age groups and paired organs. Results: Overall the size of most parts of the reproductive tract of goats increased with ages and 19-24 m group had the highest values. In paired organs such as ovaries, uterine tubes and uterine horns, the right organs were significantly bigger than the left one. Similarly, at morphometric analysis, the length of all histologic parts such as cortex and medulla of ovary, tunica mucosa, tunica muscularis and tunica serosa of uterine tube, uterus, vagina and vulva increased significantly with ages and the highest values observed at age category of 19-24 m. Conclusion: The knowledge of the biometrical and morphometric parameters of female genitalia of Black Bengal goats would help in performing artificial insemination, pregnancy diagnosis and treating infertility related problems.

Pathological investigation of genital diseases in Black Bengal goats (Capra hircus) was done using slaughterhouse materials. A total of 256 female genitalia were collected from slaughterhouses of Kishoreganj district of Bangladesh during October 2016 to December 2018. The gross pathological changes were recorded and tissues from the affected organs were collected for histopathology. A total of 56 (21.9%) female genitalia showed one or more of the 84 different pathological changes. The prevalence of reproductive diseases increased with age: the highest number of lesions (34) was recorded in animals aged 19-24 months. The uterus showed the highest number of pathological lesions (44) followed by ovary (31), fallopian tube (5), cervix (2) and vagina (2). Major pathological changes were luteal cyst (7.4%), endometritis (6.3%) and pyometra (7.0%). The Bangladesh Veterinarian (2019) 36(1 - 2): 8-19

Nine uteri of Black Bengal goats (Capra hircus) affected with pyometra were collected from three slaughterhouses at Kishoreganj district of Bangladesh. Both horns of each uterus were washed with phosphate buffered saline for isolation and identification of bacteria and its load. The bacterial loads in the uterus were high, ranging between 1 × 107 and 2.8 × 107. Six different bacterial species were identified and confirmed by Polymerase Chain Reaction (PCR). There were five Escherichia coli, six Streptococcus sp., five Staphylococcus sp, one Salmonella sp., one Pasteurella sp. and one Bacillus sp. All had mixed infections containing two or three types of bacterial pathogens. Further studies are needed for the virulence determination and antibiogram profiles. The Bangladesh Veterinarian (2019) 36(1 - 2): 1-7