View Full Table | Close Full ViewTable 1.

Composition of forage and dried distiller’s grains plus solubles (DG)

 
Bromegrass hay
DG
Item % of DM
CP 16.2 28.3
OM 85.1 94.5
NDF 64.1 30.6
ADF 35.8 8.7
Sulfur 1.0



View Full Table | Close Full ViewTable 2.

Intake of bromegrass hay and dried distiller’s grains plus solubles (DG) by steers fed varying frequencies of DG

 
Treatment1
SEM P-value
Item CON DG7 DG2 DGA
Hay DMI, kg/d 13.0c 10.5b 11.2b 8.7a 0.96 <0.001
DG DMI, kg/d 0.0a 2.2b 2.1b 2.2b 0.10 <0.001
Total DMI, kg/d 13.0b 12.7b 13.3b 10.9a 0.95 0.004
Total caloric intake,2 Mcal NEm/d 16.6a 18.1b 18.8b 15.8a 1.06 0.004
a–cMeans within row lacking common superscripts differ (P < 0.05).
1CON = only hay; DG7 = hay and 0.4% of BW as DG DM daily; DG2 = hay daily and 0.8% BW DG every other day; DGA = alternate day feeding of hay and 0.8% of BW as DG.
2 Values used to determine caloric intake were 2.116 Mcal NEm/kg for DG and 1.279 Mcal NEm/kg for hay.



View Full Table | Close Full ViewTable 3.

Ruminal fluid dynamics in steers consuming hay and dried distiller’s grains plus solubles (DG) at varying frequencies

 
Treatment1
SEM P-value
Item CON DG7 DG2 DGA
SUP2
    Dilution rate, %/h 10.0 12.6 12.5 9.7 1.2 0.08
    Flow rate, L/h 5.97 5.62 5.62 5.29 0.80 0.70
    Volume, L 62.4 45.2 47.0 53.6 7.1 0.27
    Turnover, h 11.7 8.0 8.1 10.5 1.7 0.21
NSUP3
    Dilution rate, %/h 11.7 12.1 11.9 12.8 0.5 0.54
    Flow rate, L/h 5.03b 4.79b 4.65b 3.94a 0.59 0.02
    Volume, L 42.8 40.9 39.2 31.4 5.8 0.08
    Turnover, h 8.6 8.4 8.5 7.9 0.4 0.61
a,bMeans within row lacking common superscripts differ (P < 0.05).
1CON = only hay; DG7 = hay and 0.4% of BW as DG DM daily; DG2 = hay daily and 0.8% BW DG every other day; DGA = alternate day feeding of hay and 0.8% of BW as DG.
2SUP = supplemented days (days when DG7, DG2, and DGA received DG).
3NSUP = nonsupplemented days (days when DG2 and DGA did not receive DG.



View Full Table | Close Full ViewTable 4.

Intake and digestibility of dietary components by steers consuming hay and dried distiller’s grains plus solubles (DG) at varying frequencies

 
Treatment1
SEM P-value
Item CON DG7 DG2 DGA
Intake, kg/d
    DM 13.0b 12.7b 13.3b 10.9a 0.8 0.004
    OM 11.1 10.6 11.2 9.5 0.7 0.07
    CP 2.1 2.2 2.3 2.0 0.2 0.28
    NDF 8.3c 7.3b 7.7bc 6.2a 0.6 0.004
    ADF 4.6c 4.0b 4.2b 3.3a 0.3 0.001
Apparent ruminal digestibility, %
    DM 46.1 49.6 45.6 44.5 2.3 0.22
    OM 52.7 56.4 51.9 53.4 1.9 0.20
    CP 23.3 30.6 19.9 25.3 5.0 0.30
Total intestinal digestibility, %
    DM 6.1 5.8 12.4 15.7 3.5 0.18
    OM 5.2 4.3 11.5 12.5 2.6 0.08
    CP 31.5 29.5 44.6 40.8 5.5 0.06
Total tract digestibility, %
    DM 52.2 46.3 58.0 60.2 5.7 0.36
    OM 57.8 53.4 63.3 65.9 4.9 0.32
    CP 54.7 55.7 64.5 66.1 4.7 0.26
    NDF 71.0 59.8 70.3 71.5 6.0 0.46
    ADF 66.9 52.1 64.5 63.7 6.6 0.42
a–cMeans within row lacking common superscripts differ (P < 0.05).
1CON = only hay; DG7 = hay and 0.4% of BW as DG DM daily; DG2 = hay daily and 0.8% BW DG every other day; DGA = alternate day feeding of hay and 0.8% of BW as DG.