Effect of concentrate type on rumen fermentation and milk production of cows at pasture

摘要: Abstract The experiment was conducted with 15 Autumn-calving Holstein–Friesian cows, three of which were fitted rumen cannula, that allowed to access a perennial timothy and meadow fescue sward between 10 June 12 August 1996. control treatment (C) consisted pasture alone. For the other two treatments, cows fed 4 kg per day either concentrate supplement consisting barley (B) or (M) containing (g/kg) (200), oats wheat bran (220), (110), syrup (60) molassed sugar beet pulp (200). carried out as replicated ( n =5) 3×3 Latin square design. grazing area divided into paddocks grazed on 1 2-day rotation. There no effect pH but molar proportion acetic acid in fluid higher p