Effects of increasing concentrate energy supply on the performance of loose-housed dairy cows fed grass silage-based diets

2004 ◽  
Vol 85 (1) ◽  
pp. 15-26 ◽  
Author(s):  
K Kuoppala ◽  
S Yrjänen ◽  
S Jaakkola ◽  
R Kangasniemi ◽  
J Sariola ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Energy Supply ◽  
Concentrate Energy ◽  
Grass Silage

Milk production from dairy cows offered a conserved barley/kale bicrop compared to grass silage

1998 ◽  
Vol 1998 ◽  
pp. 24-24 ◽  
Author(s):  
J.M. Moorby ◽  
P.R. Evans ◽  
N.E. Young
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Energy Supply ◽  
Protein Production ◽  
Milk Protein ◽  
Microbial Population ◽  
Grass Silage ◽  
Feed Protein

The efficiency of use of feed protein for milk protein production is very poor, particularly for animals offered conserved forages. Contributing to this is the inefficient capture of rumen degradable N in situations where a readily fermentable energy supply is not available for use by the rumen microbial population. The incorporation of a whole crop cereal into a conserved forage could increase rumen protein efficiency. This experiment was carried out to investigate the milk production of dairy cows offered a conserved forage of a whole crop barley and kale bicrop compared with grass silage, and a mixture of the two.

Milk production from dairy cows offered a conserved barley/kale bicrop compared to grass silage

1998 ◽  
Vol 1998 ◽  
pp. 24-24
Author(s):  
J.M. Moorby ◽  
P.R. Evans ◽  
N.E. Young
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Energy Supply ◽  
Protein Production ◽  
Milk Protein ◽  
Microbial Population ◽  
Grass Silage ◽  
Feed Protein

The efficiency of use of feed protein for milk protein production is very poor, particularly for animals offered conserved forages. Contributing to this is the inefficient capture of rumen degradable N in situations where a readily fermentable energy supply is not available for use by the rumen microbial population. The incorporation of a whole crop cereal into a conserved forage could increase rumen protein efficiency. This experiment was carried out to investigate the milk production of dairy cows offered a conserved forage of a whole crop barley and kale bicrop compared with grass silage, and a mixture of the two.

An examination of possible interactions between silage type and concentrate composition on the intake characteristics of grass silage offered to growing cattle and dairy cows

1995 ◽  
Vol 1995 ◽  
pp. 21-21 ◽  
Author(s):  
C.S. Mayne ◽  
Rosemary Agnew ◽  
D.C. Patterson ◽  
R.W.J. Steen ◽  
F.J. Gordon ◽  
...  
Keyword(s):  
Energy Source ◽  
Dairy Cows ◽  
Crude Protein ◽  
Protein Concentration ◽  
Concentrate Energy ◽  
Diverse Range ◽  
Grass Silage ◽  
Growing Cattle ◽  
Accuracy Of Prediction ◽  
Concentrate Energy Source

Considerable progress has been made recently in improving the accuracy of prediction of silage intake, when offered as the sole food, to growing cattle (Steen et al, 1995). However, in order to incorporate this information into feed rationing programmes, it is essential to obtain information on how silages of differing characteristics interact when offered with a range of levels and types of supplementary feeds. The aim of this study was to examine the effects of concentrate energy source and crude protein concentration, when offered at a range of feed levels, on the voluntary food of a diverse range of grass silages with both growing beef cattle and dairy cows.

An examination of the effect of concentrate energy source and changes in eRDP:DUP ratio on milk production of dairy cows offered grass silages differing in digestibility and intake characteristics

1997 ◽  
Vol 1997 ◽  
pp. 9-9
Author(s):  
T.W.J. Keady ◽  
C.S. Mayne ◽  
M. Marsden
Keyword(s):  
Energy Source ◽  
Dairy Cows ◽  
Important Variable ◽  
Animal Performance ◽  
Concentrate Energy ◽  
Diverse Range ◽  
Grass Silage ◽  
Lactating Dairy Cows ◽  
Concentrate Energy Source ◽  
Degradable Protein

Results from a previous study at this Institute indicated that concentrate energy source did not alter silage intake or animal performance of lactating dairy cows offered a range of grass silages of similar digestibility but differing in intake characteristics. Digestibility is probably the single most important variable affecting animal performance from grass silage. The present study was undertaken to examine the effects of concentrate energy source and effective rumen degradable protein (eRDP):digestible undegradable protein (DUP) ratio in the concentrate on the silage intake of, and animal performance from, lactating dairy cows offered a diverse range of grass silages differing in digestibility and intake characteristics.

Supplementation of grazing dairy cows with a brewers grains/treated straw mixture

1990 ◽  
Vol 1990 ◽  
pp. 46-46 ◽  
Author(s):  
J.D. Leaver ◽  
R.C. Campling
Keyword(s):  
Dairy Cows ◽  
Crude Protein ◽  
Dry Matter ◽  
Barley Straw ◽  
Severe Drought ◽  
Grass Silage ◽  
Metabolisable Energy ◽  
Grazing Dairy Cows ◽  
Similar Cost ◽  
Friesian Cows

Supplementary feeding of grazing dairy cows is often uneconomic, and whilst supplementation with silage (buffer feeding) can be worthwhile, this often leads to a depletion of winter forage stores. In this study, a mixture of brewers grains and treated straw was used as a supplement. Offered as a 1:1 mixture in the dry matter (DM), it is a purchased substitute for grass silage, having a similar cost, and similar metabolisable energy (ME) and crude protein (CP) contents. The high seasonality adjustments to milk price in mid-late season make supplementation potentially worthwhile.Experiments were carried out from April to September in 1988 and 1989, which had moderate and very low rainfall respectively. Each year 20 British Friesian cows which calved December to March (1988 experiment) and February-April (1989) were allocated at random to either treatment B or C. In B, the cows were offered a 1:1 mixture (DM basis) of brewers grains and NaOH treated chopped barley straw for 60 minutes after morning milking. In C, the cows received no supplement. Both groups were fed 1.0 kg/day of concentrates in the milking parlour. Due to the severe drought in 1989, concentrate feeding was increased to 5.0 kg/day for all cows during the last 4 weeks of the experiment. Also, urea-treated whole crop wheat was fed at a level of 2.5 kg DM/day during the last 7 days.

scholarly journals Estimation of rumen outflow in dairy cows fed grass silage-based diets by use of reticular sampling as an alternative to sampling from the omasal canal

2010 ◽  
Vol 93 (3) ◽  
pp. 1138-1147 ◽  
Author(s):  
S.J. Krizsan ◽  
S. Ahvenjärvi ◽  
H. Volden ◽  
G.A. Broderick
Keyword(s):  
Dairy Cows ◽  
Grass Silage
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