Evaluation of changes in metabolic hormones and metabolic indices during physiological and pathological course of puerperium in lactating cows / František Novotný, Ján Pošivák, Igor Valocký, H. Morvayová, Gabriel Lazar, Bohuslav Lešo, Vladimír Hura, Alexandra Valenčáková, Vladimír Macák, Gabriel Kováč KE304