https://www.banglajol.info/index.php/BJAS/issue/feedBangladesh Journal of Animal Science2023-12-31T00:00:00+00:00Professor Dr. Md. Ruhul Aminaminmr64@yahoo.comOpen Journal Systems<p>Official journal of the Bangladesh Animal Husbandry Association, Bangladesh Agricultural University, Mymensingh</p>https://www.banglajol.info/index.php/BJAS/article/view/70698Effect of age on follicular dynamics of goat ovaries2023-12-27T16:15:20+00:00MM Akhtaraminmr64@bau.edu.bdMAMY Khandokeryahiakhabg@bau.edu.bdT Akteraminmr64@bau.edu.bd<p>Reproductive aging is influenced by a gradual decline in both the quantity and quality of oocytes found within ovarian follicles. In mammals, fertility relies heavily on the health of oocyte reserves, the dynamics of follicular development, and the functioning of the ovaries. This study aimed to investigate the impact of age on the follicular dynamics of goat ovaries. A total of 40 ovaries of Black Bengal goats were obtained from a local slaughterhouse and sorted into four age groups: 6-12 months, 13-15 months, 18-21 months, and 22-24 months. Subsequently, the ovaries were treated, and follicles were assessed through visually and histologically. The findings revealed that nearly all parameters, including weight, length, and width, of both ovaries in the 18-21 months age group were insignificantly different (p>0.05) from the other age groups. Histologically, the number of normal primordial and primary follicles was also insignificantly higher (p>0.05) in goats aged 18-21 months compared to the other age groups. Conversely, the quantity of secondary follicles significantly increased (p<0.05) with age, but in terms of antral follicles, a quadratic trend was observed, where they increased up to a certain age and then declined. Additionally, the results showed that the number of degenerated primary and antral follicles was significantly higher (p<0.05) in the ovaries of 22–24-month-old goats, while the number of degenerated secondary follicles was insignificantly higher (p>0.05) compared to the remaining age groups. In conclusion, age had an effect on the follicular dynamics of goat ovaries, suggesting that ovaries from goats aged 18-21 months, sourced from slaughterhouses, hold potential for quality follicles and oocytes that can be valuable for further research.</p> <p><em>Bangladesh Journal of Animal Science</em> 52 (4): 88-97</p>2023-12-31T00:00:00+00:00Copyright (c) 2023 https://www.banglajol.info/index.php/BJAS/article/view/70699Neuroanatomy of lumbosacral and pudendal plexus in pigeon of Bangladesh2023-12-27T16:26:00+00:00J Alamjahangir@pstu.ac.bdMK Hasanaminmr64@bau.edu.bd<p>The present study aims to reveal the neuroanatomy of the lumbosacral and pudendal plexus in pigeons of Bangladesh. Six adult male domesticated pigeons were used in this study. The body cavities of the pigeons were opened after the administration of the anesthetics. The nerve roots of the plexus were dissected separately and photographed. We found that the lumbosacral plexus consisted of the lumbar plexus and the sacral plexus. The lumbar plexus was formed by the union of the ventral branches of the first, second, and third lumbar (L1-L3) spinal nerves. The lumbar plexus was branched into cutaneous femoris nerve, coxalis cranialis nerve, femoralis nerve, saphenous nerve, and obturatorius nerve. The sacral plexus was formed by the union of the ventral branches of the fourth lumbar and first, second, third, and fourth sacro-coccygeal spinal nerves. The sacral plexus gives off a large sciatic nerve and innervated as tibial and fibular nerve into musculature of the hind limb of the pigeon. The pudendal plexus was organized from the fourth, fifth, sixth and seventh sacro-coccygeal spinal nerves and were innervated into the tail region of the domesticated pigeons. This study was the first investigation of lumbosacral and pudendal plexus in domesticated pigeons and the results may serve as a basis for further investigation in other species.</p> <p><em>Bangladesh Journal of Animal Science</em> 52 (4): 98-104</p>2023-12-31T00:00:00+00:00Copyright (c) 2023 https://www.banglajol.info/index.php/BJAS/article/view/70700Effect of diluters on frozen semen production of Black Bengal Goat2023-12-27T16:35:48+00:00MA Rimiaminmr64@bau.edu.bdT Akteraminmr64@bau.edu.bdMM Akhtar aminmr64@bau.edu.bdMAMY Khandokeryahiakhabg@bau.edu.bd<p>The present study was undertaken to investigate the efficacy of three diluters (Triladyl, Andromed and Tris) for the production of frozen semen in Black Bengal goat and their effect on conception rate. Over the course of 6 months, data from six bucks were collected. Each collected sample was diluted with Triladyl, Andromed and Tris diluter, filled into 0.50 ml straws, sealed and equilibrated at 5℃ for freezing. The motility, viability and morphology were evaluated after dilution and in every step of cryopreservation (after equilibration, after freezing and after thawing). It became clear that motility and sperm viability of the frozen thawed semen differed significantly (p<0.05) but differed insignificantly (p>0.05) immediate after dilution among the diluters. The motility of frozen thawed semen was 42.50%±1.71, 34.67%±1.67 and 28.71%±1.55 in Triladyl, Andromed and Tris diluter, respectively. The viability of frozen thawed semen was 40.51%±1.78, 32.24%±1.52 and 26.84%±1.56 in Triladyl, Andromed and Tris diluter, respectively. In case of morphology, it differed insignificantly (p>0.05) among the diluters in every step of cryopreservation. Higher percentage of normal spermatozoa was found in Triladyl based diluter (87.11%) in frozen thawed semen. After 15 days of sample preparation, the motility of prepared sample was again checked to ensure the quality of frozen semen in liquid nitrogen (LN). It differed insignificantly (p>0.05) with frozen thawed semen after 24 hours of production. The obtained conception rate was 38% for Triladyl, 35% for Andromed and 27% for Tris diluter. The results of the study revealed that cryopreservation of buck semen revealed good results with Triladyl diluter followed by Andromed and Tris diluter.</p> <p><em>Bangladesh Journal of Animal Science</em> 52 (4): 105-113</p>2023-12-31T00:00:00+00:00Copyright (c) 2023