Shohiduzzaman; Hossain, M. M.; Alam, J.; Islam, M.T.
(Sher-e-Bangla Agricultural University Research System (SAURES), Dhaka, Bangladesh, 2011)
The study was conducted to determine the factors those affect the tirst service pregnancy rate (PR). A total of
180 cows, local 80, LocalxHolstein·Friesian(LxHF) 55 and localxSahiwal (LxSL) 45 were selected tram
January, ...