[Prognosis for the economic results of agriculture 2003 and expected results for 2002: three selected farming systems]

accounting animal production bovin laitier cerdo contabilidad crop rotation dairy cattle danemark denmark dinamarca efficiency eficacia exploitation agricole explotaciones agrarias farm management farm results farms ganado de leche gestion de l'exploitation agricole horas laborables manejo de fincas plant production porcin precios prices prix production animale production costs remuneration rendement rendimiento rotation culturale salarios swine temps de travail working hours yields