TY - GEN AU - Elecko,J AU - Bekeová,E AU - Rosíval,I AU - Hendrichovský,V AU - Maracek,I AU - Krajnicáková,M TI - [Levels of thyroxine, beta carotene and vitamin A during successful and unsuccessful insemination of heifers] SN - 0375-8427 PY - 1987///0304 KW - Animals KW - Carotenoids KW - blood KW - Cattle KW - Female KW - Insemination, Artificial KW - veterinary KW - Pregnancy KW - Thyroxine KW - Vitamin A KW - beta Carotene N1 - Publication Type: English Abstract; Journal Article ER -