Directory UMM :Data Elmu:jurnal:A:Animal Feed Science and Technology:Vol84.Issue3-4.May2000:
Animal Feed Science and Technology
84 (2000) 199±212
Effect of concentrate type on rumen fermentation
and milk production of cows at pasture
H. Khalilia,*, A. Sairanenb
a
Agricultural Research Centre of Finland, Animal Production Research, FIN-31600 Jokioinen, Finland
Agricultural Research Centre of Finland, North Savo Research Station, FIN-71750 Maaninka, Finland
b
Received 11 May 1999; received in revised form 31 January 2000; accepted 10 February 2000
Abstract
The experiment was conducted with 15 Autumn-calving Holstein±Friesian cows, three of which
were ®tted with rumen cannula, that were allowed to access a perennial timothy and meadow fescue
sward between 10 June and 12 August 1996. The control treatment (C) consisted of pasture alone.
For the other two treatments, cows were fed 4 kg per day of either a concentrate supplement
consisting of barley (B) or a treatment (M) containing (g/kg) barley (200), oats (200), wheat bran
(220), wheat (110), wheat syrup (60) and molassed sugar beet pulp (200). The experiment was
carried out as a replicated (n5) 33 Latin square design. The grazing area was divided into 15
paddocks and cows were grazed on a 1 to 2-day rotation. There was no treatment effect on rumen
pH but the molar proportion of acetic acid in rumen ¯uid was higher (p
84 (2000) 199±212
Effect of concentrate type on rumen fermentation
and milk production of cows at pasture
H. Khalilia,*, A. Sairanenb
a
Agricultural Research Centre of Finland, Animal Production Research, FIN-31600 Jokioinen, Finland
Agricultural Research Centre of Finland, North Savo Research Station, FIN-71750 Maaninka, Finland
b
Received 11 May 1999; received in revised form 31 January 2000; accepted 10 February 2000
Abstract
The experiment was conducted with 15 Autumn-calving Holstein±Friesian cows, three of which
were ®tted with rumen cannula, that were allowed to access a perennial timothy and meadow fescue
sward between 10 June and 12 August 1996. The control treatment (C) consisted of pasture alone.
For the other two treatments, cows were fed 4 kg per day of either a concentrate supplement
consisting of barley (B) or a treatment (M) containing (g/kg) barley (200), oats (200), wheat bran
(220), wheat (110), wheat syrup (60) and molassed sugar beet pulp (200). The experiment was
carried out as a replicated (n5) 33 Latin square design. The grazing area was divided into 15
paddocks and cows were grazed on a 1 to 2-day rotation. There was no treatment effect on rumen
pH but the molar proportion of acetic acid in rumen ¯uid was higher (p