Wie reagieren unterschiedliche Kuhtypen auf eine Reduktion des Konzentratfuttereinsatzes in einem Bio-Low-Input System?

The present study compared the response of two different dairy cow types to the reduction of concentrate supplementation within an Alpine low-input system. Conventional Brown Swiss (BV) and a strain of Holstein Friesian selected for lifetime performance (HFL) were assigned to one of two concentrate supplementation levels which included 618 kg DM (Kon) and 279 kg DM (Low) of concentrates per cow and lactation. During the two years of the study, data were collected of 21 lactations from 13 individual BV animals and 29 lactations from 21 individual HFL animals. No significant interaction between breed and dietary treatment was observed for milk production, body condition score or reproductive performance. Cows fed the Low diet had significantly lower lactation milk yield, but there were no differences in milk production between breeds. The reduction of concentrate supplementation increased the loss of body condition in early lactation, but mean values for body condition score did not differ between dietary treatments. No significant breed or diet effect was found for days from calving to conception