[A further help for reproduction [of sows]]

acide ascorbique acide folique acido ascorbico acido folico alimentation des animaux alimentazione zootecnica animal feeding ascorbic acid attitudine alla riproduzione biotin biotina biotine cerdas destete enriquecimiento de los alimentos folic acid food enrichment performance de reproduction piglets porcelet reproduction reproductive performance reproductividad riproduzione scrofe sevrage sows suinetti svezzamento truie vitamin e vitamina e vitamine e weaning