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Sinha, R., Bhakat, M., Mohanty, T.K., Kumar, R., Ranjan, A., Rahim, A., Lone, S.A., Shah, N., Paray, A.R., Patil, C.S. and Singh, A. (2021) Seasonal Variation of Sperm Kinematics in Murrah Bulls Under the Tropical Climatic Condition. Buffalo Bulletin, 40, 87-98.

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• TITLE: Comparative Study on Semen Quality and Fertility of Red Chittagong Cattle, BCB1 and Munshiganj Bulls of Bangladesh

  AUTHORS: Sheikh Mohammad Jahangir Hossain, Md. Faizul Hossain Miraz, Shahrina Akter, Md. Younus Ali, Gautam Kumar Deb

  KEYWORDS: Native Bulls, CASA, Sperm Kinematics, Morphology and Fertility

  JOURNAL NAME: Advances in Bioscience and Biotechnology, Vol.13 No.9, September 29, 2022

  ABSTRACT: The present study was conducted to analyze the fresh and post-thaw semen quality and fertility from native bulls of Red Chittagong Cattle (RCC), BLRI Cattle Breed 1 (BCB1), and Munshiganj Cattle of Bangladesh. One hundred and seventy-two ejaculates were collected by artificial vagina set and semen analysis was performed using Computer Assisted Sperm Analyzer (CASA) at Bangladesh Livestock Research Institute. Commercial extender (AndroMed) was used to dilute the fresh semen. After equilibration (4°C for 4 hr), freezing was done using a programmable bio-freezer. Post-thawed semen was evaluated for sperm motility and kinematics. Cryopreserved semen straws were used for artificial insemination (AI) and determined the bull fertility based on 60 days non-return rate. Motility of the sperm differs significantly (p 0.05) among the bulls but the highest concentration was found in Munshiganj bull (1669.60 ± 192.07 million/ml) followed by RCC (1648.70 ± 91.07 million/ml) and BCB1 bull (1481.60 ± 167.35 million/ml). Moreover, the highest bent tail (5.89 ± 0.75%), coiled tail (1.01% ± 0.22%) and distal mid-piece reflex (2.26% ± 0.28%) were observed in BCB1 followed by Munshiganj and RCC. Amplitude of lateral head displacement (ALH) was recorded higher in post-thaw than in fresh semen. Kinematics parameters of post-thaw semen decreased than fresh semen irrespective of genotypes. More number of doses/ejaculates can be produced from Munshiganj bull (394.34 ± 127.95) followed by RCC (349.01 ± 120.91) and BCB 1 bulls (331 ± 98.99). Fertility rate does not differ among the bulls (p > 0.05) but the highest value was found for RCC (62.06% ± 1.94%) bulls. Therefore, it can be concise that, the quality of Red Chittagong Cattle semen is better than BCB 1 and Munshigang bull.