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B f ttl br d r mono-ovulatory nd l tru n nature and t nd t have a defined tr u cycle l ngth of r x m t l 21 d . F m l r r du t n b g n wh n a b f heifer b g n t l n a regular basis and n rm ll coincides w th th heifer r h ng 50% of t dult w ght t r x m t l 12-15 m nth f g . The estrous l r gul t d n a similar m nn r t th r m n - vul t r w th th r r t n f th uterus for u ful r gn n rr t v of wh th r r n t n mbr present. Th embryo und rg a r d f rapid l ng t n of the trophectoderm ll , nd maternal recognition of r gn n r u r d n rd r f r th r u luteum (generated b r tru tur ng of th ll from th ovulated f ll l ) and r g t r n n ntr t n n r ul t n t b maintained. Placental formation in b f cattle cotyledonary n nature and u t superficial with r gn n lasting b tw n 279-287 days d nd ng on br d nd x of th f tu . P rtur t n m l r in dairy ttl , but b f cattle d not experience th post-partum n g t v n rg b l n that dairy cows d nd have comparative ease t b m r gn nt again. S l t br d f beef cattle r adapted t dv r nd t n , e.g., tropical climates, wh h have l d t some interesting reproductive functions.

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