Prediction of silage intake by cattle

1995 ◽  
Vol 1995 ◽  
pp. 20-20
Author(s):  
R.W.J. Steen ◽  
F.J. Gordon ◽  
C.S. Mayne ◽  
R.E. Agnew ◽  
D.J. Kilpatrick ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Dairy Cows ◽  
Efficient Production ◽  
High Quality ◽  
Grass Silage ◽  
Voluntary Intake ◽  
Design Experiments ◽  
Optimum Input

Efficient production of high quality milk and beef is dependent on dairy cows and beef cattle receiving the correct intake of nutrients. However the intake of grass silage is very variable and consequently an effective method for predicting the voluntary intake of silage is essential if animals are to be allocated the correct amount of concentrates to provide the optimum input of nutrients. Two changeover design experiments have been carried out with the aim of providing an effective method for predicting silage intake by cattle.

Prediction of silage intake by cattle

1995 ◽  
Vol 1995 ◽  
pp. 20-20 ◽  
Author(s):  
R.W.J. Steen ◽  
F.J. Gordon ◽  
C.S. Mayne ◽  
R.E. Agnew ◽  
D.J. Kilpatrick ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Dairy Cows ◽  
Efficient Production ◽  
High Quality ◽  
Grass Silage ◽  
Voluntary Intake ◽  
Design Experiments ◽  
Optimum Input

Efficient production of high quality milk and beef is dependent on dairy cows and beef cattle receiving the correct intake of nutrients. However the intake of grass silage is very variable and consequently an effective method for predicting the voluntary intake of silage is essential if animals are to be allocated the correct amount of concentrates to provide the optimum input of nutrients. Two changeover design experiments have been carried out with the aim of providing an effective method for predicting silage intake by cattle.

The response of January/February calving british friesian cows to level of protein supplementation

1986 ◽  
Vol 1986 ◽  
pp. 8-8
Author(s):  
A Reeve ◽  
R D Baker ◽  
R G Hodson
Keyword(s):  
Dairy Cows ◽  
Protein Supplementation ◽  
High Quality ◽  
Protein Requirements ◽  
Grass Silage ◽  
Recent Debate ◽  
Ad Libitum ◽  
Present Trial ◽  
General Reduction ◽  
Friesian Cows

There has been much recent debate about the protein requirements of lactatinq dairy cows, and this issue has been heightened by a general reduction in concentrate feeding in response to the imposition of milk quotas. Furthermore, the value of silage as a source of protein has been questioned widely. The objective of the present trial was to determine the effect of increasing supplementary protein on the performance of cows with ad libitum access to high quality grass silage.The trial, using January/February calving British Frieslan cows in second or subsequent lactations, was performed at Ravenscroft Hall Farm, Middlewich, Cheshire. Four groups of 15 cows were offered either 3 or 6 kg/head/day of cereal/soya/fishmeal based compound feeds containing either 214 (L) or 403 (H) g CP/kg DM, and high quality grass silage ad libitum.

Effects of varying silage quality for dry cows on feed intake, weight change and performance in the subsequent lactation

2000 ◽  
Vol 2000 ◽  
pp. 142-142
Author(s):  
R. J. Dewhurst ◽  
D. W. R. Davies ◽  
W. J. Fisher
Keyword(s):  
Milk Production ◽  
Metabolic Activity ◽  
Feed Intake ◽  
Nutrient Supply ◽  
Current Experiment ◽  
High Quality ◽  
Grass Silage ◽  
Silage Quality ◽  
Voluntary Intake ◽  
And Performance

Earlier studies (e.g. Dewhurst et al., 1996, 1999) have shown marked declines in forage voluntary intake as calving approaches. The resultant reduction in nutrient supply may compromise performance in the next lactation, because it coincides with a period of intense metabolic activity in preparation for the next lactation. Feeding concentrates to dry cows did not overcome this problem (Dewhurst et al., 1999). The objective of the current experiment was to investigate alternative dry cow strategies, using only high-quality grass silage, to minimise the severity and consequences for subsequent milk production of the reduction in nutrient supply in this period.

The effect of grass and maize silage quality on diet digestibility and performance of beef cattle

2003 ◽  
Vol 2003 ◽  
pp. 10-10
Author(s):  
R.M. Kirkland ◽  
D.C. Patterson
Keyword(s):  
Beef Cattle ◽  
Animal Performance ◽  
Maize Silage ◽  
High Quality ◽  
Grass Silage ◽  
Preliminary Study ◽  
Silage Quality ◽  
And Performance

A preliminary study at this Institute indicated that inclusion of high quality maize silage in a grass silage-based diet could promote higher forage intakes in beef cattle, but the response to inclusion of maize silage was affected by the quality of grass silage. The objective of this study was to further examine the effects of grass (GS) and maize (MS) silage qualities on intake characteristics, and to evaluate the influence of forage offered on animal performance.

The effects of intraruminal infusions of urea on the voluntary intake and milk production of cows receiving grass silage diets

1990 ◽  
Vol 57 (4) ◽  
pp. 455-464 ◽  
Author(s):  
Jai-Jun Choung ◽  
David G. Chamberlain ◽  
Phillip C. Thomas ◽  
Ian Bradbury
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Crude Protein ◽  
Clinical Symptoms ◽  
Factors Associated ◽  
Grass Silage ◽  
Lactating Cows ◽  
Insulin In Plasma ◽  
Voluntary Intake ◽  
Higher Doses

SummaryResponses of dairy cows given silage diets to the intraruminal infusion of urea in progressively increasing doses were studied in four experiments, two with non-lactating cows and two with lactating cows. No clinical symptoms of NH3 toxicity were observed in any of the experiments. When urea was infused continuously, silage intake was depressed (P < 0·05) when the total supply of N exceeded the equivalent of 250g crude protein (CP)/kg DM in the total diet. However, when the urea load was administered twice daily, as opposed to continuously, intake depression (P < 0·05) occurred at the equivalent of 170g CP/kg DM. At the higher doses of urea, concentrations of NH3 in peripheral blood increased and were accompanied by increased concentrations of glucose and reduced levels of insulin in plasma. In general, responses of milk production followed those of silage intake but there was evidence of greater proportional reductions in the yield of lactose relative to that of fat and protein. It is concluded that the voluntary intake of high-protein silages may be depressed by factors associated with high rates of absorption of NH3 from the rumen.

scholarly journals Production and utilization of ensiled forages by beef cattle, dairy cows, pregnant ewes and finishing lambs - A review

2013 ◽  
Vol 22 (1) ◽  
pp. 70-92 ◽  
Author(s):  
Tim Keady ◽  
Seamus Hanrahan ◽  
Christina Marley ◽  
Nigel David Scollan
Keyword(s):  
Beef Cattle ◽  
Dairy Cows ◽  
Dry Matter ◽  
Red Clover ◽  
Fertilizer Management ◽  
Maize Silage ◽  
Factors Affecting ◽  
Grass Silage ◽  
Feed Value ◽  
Cattle And Sheep

This paper reviews the production of, and factors affecting the performance of dairy cows, beef cattle and sheep offered silage based diets in Ireland and UK. Digestibility is the most important factor influencing the feed value of grass silage and consequently animal performance. Each 10 g kg-1 increase in digestive organic matter in the dry matter (DOMD) increases milk yield of dairy cows by 0.33 kg d-1, carcass gain of beef cattle by 23.8 g d-1 , carcass gain of finishing lambs by 9.3 g d-1, lamb birth weight by 52.3 g and ewe weight post lambing by 1.3 kg, respectively. Factors influencing feed value of grass silage are discussed including harvest date, wilting, fertilizer management, chop length and use of additives at ensiling. Maize silage increases the performance of cattle and sheep whilst whole crop wheat silage has no beneficial effect. Advances in silage technology, has enabled the ensiling high protein forages, such as red clover, lucerne and kale.

Effect of silage feeding system and concentrate composition on the performance of lactating dairy cows.

1987 ◽  
Vol 1987 ◽  
pp. 31-31
Author(s):  
R.H. Phipps ◽  
J.D. Sutton ◽  
R.F. Weller
Keyword(s):  
Dairy Cows ◽  
Milk Fat ◽  
Feeding System ◽  
High Quality ◽  
Grass Silage ◽  
Lactating Dairy Cows ◽  
Major Energy Source ◽  
Frequent Feeding ◽  
Ad Libitum ◽  
Present Trial

The “low milk fat” syndrome and “off feed” problems have long been associated with the use of rations incorporting a high proportion of starch based concentrate. These problems can be ameliorated by frequent feeding of concentrate, the use of out of parlour feeders or complete diets. Another approach has been to examine alternatives to cereal starch as the major energy source for concentrate supplements. Since few comparisons of concentrates containing a mixture of high quality fibre sources have been reported, the present trial was designed to compare concentrates based on cereal starch with those containing a mixture of high quality fibre sources when given with ad libitum grass silage from calving. An additional aim was to compare individual feeding through Calan Broadbent gates with groups fed forage at a self-feed clamp.

The effect of protein content of the supplement on the response to level of supplementation with dairy cattle offered grass silage ad libitum

1990 ◽  
Vol 1990 ◽  
pp. 43-43
Author(s):  
C. S. Mayne
Keyword(s):  
Dairy Cows ◽  
Protein Content ◽  
Crude Protein ◽  
Large Scale ◽  
Crude Protein Content ◽  
Fresh Weight ◽  
High Quality ◽  
Grass Silage ◽  
Ad Libitum ◽  
Four Levels

Previous studies at this Institute have shown that there is an interaction between level of supplementary feeding and protein content in the supplement. For example, a given milk yield can be obtained by offering supplements of high crude protein content at much lower levels than would be required with conventional supplements. Furthermore, this approach enables a greater reliance on the forage component of the diet, particularly where high quality grass silage is available. The objective of the present large scale study was to determine milk production responses to supplements of differing protein content, given with high quality grass silage, and to examine effects on ration digestibility.The experiment was carried out over a two year period, with a total of 168 autumn-calving British Friesian dairy cows. Supplements containing either 100, 220, 340 or 460 g crude protein (CP)/kg fresh weight were offered from day 14 of lactation. Each supplement was offered at four levels, with 9 animals per treatment.

Prediction of voluntary intake of grass silage by lactating cows

1990 ◽  
Vol 1990 ◽  
pp. 61-61
Author(s):  
A. J. Rook ◽  
M. Gill ◽  
R. D. Willink
Keyword(s):  
Food Intake ◽  
Dairy Cows ◽  
Prediction Models ◽  
Flat Rate ◽  
Grass Silage ◽  
Lactating Cows ◽  
Ad Libitum ◽  
Voluntary Intake ◽  
The Uk ◽  
Voluntary Food Intake

Prediction of voluntary food intake is Important in the formulation of rations for dairy cows. There are a number of prediction models which perform relatively well for diets based on dry forages but not for silage based diets (Neal, Thomas and Cobby, 1984). Prediction of intake of silage based diets is particularly important in the UK where 0.85 of the conserved forage fed to dairy cows is silage. A large and increasing proportion of herds are fed silage ad-libitum and concentrates at a flat rate. This study was an attempt to produce better prediction models for voluntary intake of silage by dairy cows under this feeding regime.

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