Effects of a spasmolytic [phenyldimethyl - pirazolon - aminometan - sodium sulphonate] on the duration of farrowing in sows

allevamento zootecnico intensivo analisi statistica analyse statistique biosintesi biosynthese biosynthesis cerdas crianza intensiva esperimenti experimentation farmaci neurotropi inhibition inibizione intensive husbandry neurotropic drugs parto parturition piglets porcelet prostaglandinas prostaglandine prostaglandins scrofe sows statistical analysis suinetti truie