Milk production systems for plain regions. Comparison of economic efficiency and work load | Systemes de production laitiere en region de plaine. Comparaison de la rentabilite et de la charge de travail

alimentation des animaux alojamiento de animales animal breeding animal feeding animal housing animal husbandry methods dairy cows economic analysis farm management gestion de l'exploitation agricole horas laborables livestock management llanuras logement des animaux manejo de fincas manejo del ganado mejoramiento animal milk production plaine plains production costs sostenibilidad suisse suiza sustainability switzerland temps de travail vacas lecheras working hours