Lactation performance, herbage intake and lamb growth of Scottish Blackface and East Friesland x Scottish Blackface ewes grazing hill or improved pasture

agneau alimentation des animaux animal feeding brebis cordero ewes feed intake festuca gain de poids ganancia de peso grazing lambs lolium meat production milk production oveja ovin ovinos pastizales pastoreo pastures prise alimentaire (animaux) production de viande sheep trifolium weight gain