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The technical and economic impacts of introducing lucerne into mixed crop-dairy livestock systems

Paru en 2017 dans Fourrages n°232 (page 305 à 308)

Auteurs : Uijttewaal A.

Co-auteurs : Battegay S., Carel Y.

Mots-clefs : luzerne, étude économique, bovin, complémentation, variations interannuelles, simulation, fourrage, système d'exploitation, qualité du lait, autonomie, polyculture - élevage

Résumé :

Dairy farmers can use lucerne to increase protein self-sufficiency. However, its system-wide impacts must be considered. Here, we simulated the consequences of lucerne use for a standard mixed crop-livestock farm (spanning 175 ha of usable farm area, with 75 ha dedicated to grain and oilseed crops; annual milk production of 1 million litres). For the dairy cattle's winter diet, 11 ha of maize were replaced by 11 ha of lucerne. A seven-year period was simulated; during this time, the sale prices of farm products (milk and grain crops) and the cost of farm supplies (fuel and feed) fluctuated. Concentrate self-sufficiency rose from 40% to 61% for dry matter and from 15% to 30% for crude protein. On average, the cost price of milk dropped by 4 €/1,000 litres, but the current result varied depending on prevailing economic conditions, notably the ratio between the cost of protein concentrates and the sale price of wheat.

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