Variation of Semen Quality Among Three Generations (F1, F2 and F3) of Holstein Friesian Upgraded Breeding Bulls of Bangladesh. Res. Agric. Livest. Fish. [Internet]. 2020 Dec. 31 [cited 2026 Jul. 5];7(3):457-63. Available from: https://banglajol.info/index.php/RALF/article/view/51365