Marginal magnesium deficiency as a possible cause of reduced voluntary feed intake in commercially managed dairy cows

1980 ◽  
Vol 4 (1) ◽  
pp. 225-229 ◽  
Author(s):  
P. R. Scott ◽  
J. M. Kelly ◽  
D. A. Whitaker ◽  
N. D. Cameron
Keyword(s):  
Dairy Cows ◽  
Feed Intake ◽  
Magnesium Deficiency ◽  
Voluntary Feed Intake ◽  
Possible Cause

scholarly journals Feeding preferences and voluntary feed intake of dairy cows: Effect of conservation and harvest time of birdsfoot trefoil and chicory

2015 ◽  
Vol 98 (10) ◽  
pp. 7238-7247 ◽  
Author(s):  
D. Lombardi ◽  
E. Vasseur ◽  
R. Berthiaume ◽  
T.J. DeVries ◽  
R. Bergeron
Keyword(s):  
Dairy Cows ◽  
Feed Intake ◽  
Birdsfoot Trefoil ◽  
Harvest Time ◽  
Feeding Preferences ◽  
Voluntary Feed Intake

Methane emissions and digestive physiology of non-lactating dairy cows fed pasture forage

2007 ◽  
Vol 87 (4) ◽  
pp. 601-613 ◽  
Author(s):  
C. S. Pinares-Patiño ◽  
G. C. Waghorn ◽  
A. Machmüller ◽  
B. Vlaming ◽  
G. Molano ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Feed Intake ◽  
Large Animal ◽  
Digestive Physiology ◽  
Kinetics Parameters ◽  
Lactating Cows ◽  
Voluntary Feed Intake ◽  
Lactating Dairy Cows ◽  
Digestion Kinetics ◽  
Jersey Cows

The objective of this study was to identify intake and digestion characteristic(s) responsible for variation in methane (CH4) emissions from non-lactating cows fed pasture forage. Nine Friesian × Jersey cows ranked low, medium or high CH4 emitters [group means 15.3, 19.2 and 24.8 g kg-1 dry matter intake (DMI), respectively; P = 0.015] were selected from a herd of 302 lactating cows. The selected cows were dried-off, rumen-fistulated, and fed indoors on fresh pasture forage at 0700 and 1700. Voluntary feed intake (VFI), feeding behaviour and intake rates (IR) were measured over 5 d. Feed allowance was reduced to 90% of VFI for measurement of CH4 emissions and rumen fermentation and digestion kinetics parameters. Although some variation in CH4 yield remained among the animals (26.4 ± 3.6 g kg-1 DMI), the previous ranking of cows during lactation was no longer evident during this study (P = 0.41). The change in CH4 yields may have resulted from lower feed intakes of lower quality pasture compared with grazing. Regression analysis showed that absolute CH4 emission (g d-1) was best described by DMI and rumen acetate concentration (ACE) before the PM feeding (ACE 1700) (R2 = 0.88), whereas CH4 yield (g kg-1DMI) was mainly a function of ACE 1700 h alone (R2 = 0.84). We suggest that large animal-to-animal variations in CH4 yield are most likely associated with high intakes and concomitant effects of salivation and rumen digestion and passage. Key words: Methane, animal variation, feed intake, rumen digestion, dairy cows, pasture

scholarly journals Dietary Variety Via Sweetening and Voluntary Feed Intake of Lactating Dairy Cows

1997 ◽  
Vol 80 (5) ◽  
pp. 894-897 ◽  
Author(s):  
M.R. Murphy ◽  
A.W.P. Geijsel ◽  
E.C. Hall ◽  
R.D. Shanks
Keyword(s):  
Dairy Cows ◽  
Feed Intake ◽  
Dietary Variety ◽  
Voluntary Feed Intake ◽  
Lactating Dairy Cows

Effects of NaOH-treated wheat and a mixture of barley and oats on the voluntary feed intake and milk production in dairy cows

2013 ◽  
Vol 154 (1-3) ◽  
pp. 103-111 ◽  
Author(s):  
M. Hetta ◽  
M.N. Tahir ◽  
S.J. Krizsan ◽  
A. Puranen ◽  
P. Huhtanen
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Feed Intake ◽  
Voluntary Feed Intake

Estimation of voluntary feed intake from in sacco degradation and rate of passage of DM or NDF

1994 ◽  
Vol 39 (1) ◽  
pp. 49-52 ◽  
Author(s):  
T. Stensig ◽  
M.R. Weisbjerg ◽  
J. Madsen ◽  
T. Hvelplund
Keyword(s):  
Feed Intake ◽  
Voluntary Feed Intake ◽  
In Sacco

Factors affecting voluntary feed intake in pigs. II. The effect of two levels of crude fibre in the diet on the intake and performance of fattening pigs

1967 ◽  
Vol 9 (2) ◽  
pp. 149-154 ◽  
Author(s):  
D. J. A. Cole ◽  
J. E. Duckworth ◽  
W. Holmes
Keyword(s):  
Feed Intake ◽  
Live Weight ◽  
Carcass Quality ◽  
Intake Rate ◽  
Crude Fibre ◽  
Factors Affecting ◽  
Voluntary Feed Intake ◽  
And Performance ◽  
Isocaloric Diets ◽  
Fattening Pigs

1. Voluntary feed intake, performance and carcass quality were studied with 20 individually housed pigs given isocaloric diets (2,770 kcal/kg. DM) containing either 8·9 % or 12·9 % crude fibre in the dry matter over the period of growth from 45 to 91 kg. live-weight.2. There were no significant differences between diets in voluntary feed intake, rate of gain or carcass quality.3. Apparent digestibility coefficients and rates of passage of the diets were determined in eight castrated male pigs. Rates of passage were not significantly affected by diet or live-weight when determined at 57 and 82 kg. live-weight.

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