[Effect of the substitution of triticale (X Triticosecale Wittmack) for tallow in rations for gestating and lactating sows, on piglets and on oestrus occurrence]

cerdas ciclo estral crecimiento croissance cycle oestral gestation growth oestrous cycle peso piglets poids porcelet pregnancy ration rations sebo sows suif tallows triticale truie weight