Abstract
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.
Highlights
Black Bengal goats are a very important species of livestock in Bangladesh because it retained the ability to produce offspring within a short time
The reproductive physiology of goat is least understood compared to cattle, sheep and pig
The knowledge of the biometric parameters of female genitalia is very important in performing artificial insemination, pregnancy diagnosis and dealing with the infertility problems and their treatment (Kunbhar et al, 2003; Kumar et al, 2004)
Summary
Black Bengal goats are a very important species of livestock in Bangladesh because it retained the ability to produce offspring within a short time. 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. 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. 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.
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