Effect of date and length of closure and post grazing residual on pasture quality for silage

1998 ◽  
pp. 259-264
Author(s):  
J.M. Mcgrath ◽  
J.W. Penno ◽  
K.L. Davis ◽  
R. Wrenn
Keyword(s):  
Dairy Cows ◽  
Dry Matter ◽  
Nutritional Value ◽  
Farming Systems ◽  
Botanical Composition ◽  
Pasture Quality ◽  
Lactating Dairy Cows ◽  
Metabolisable Energy ◽  
Made In

The nutritional value of pasture silage made in New Zealand is often sub-optimal for lactating dairy cows. As farming systems require more pasture silage to be used in an attempt to increase lactation lengths and milksolids production per cow, the quality of this silage becomes more important. In spring 1995, pastures were closed for silage at weekly intervals from 11 September to 17 October, representing six distinct closure dates, to determine the effect that date and length of closure has on pasture quality. In spring 1997 pastures were grazed to different residuals (1.2- 1.4, 1.8-2.0, 2.1-2.4 and 2.5-2.9 t DM/ha) and then closed for silage to determine the effect that post grazing residual has on pasture quality. In both experiments pasture dry matter (DM) yield and chemical and botanical composition was monitored over the 63 day closure. Pasture closed on 11 or 17 September had higher metabolisable energy (ME) (P

scholarly journals Annual dry matter, metabolisable energy and nitrogen yields of six dryland pastures six and seven years after establishment

2010 ◽  
pp. 177-184 ◽  
Author(s):  
A. Mills ◽  
D.J. Moot
Keyword(s):  
White Clover ◽  
Dry Matter ◽  
Subterranean Clover ◽  
Trifolium Subterraneum ◽  
Pasture Quality ◽  
N Yield ◽  
Nitrogen Yields ◽  
Metabolisable Energy ◽  
Lincoln University

Dry matter (DM) yields, botanical composition, liveweight production and pasture quality of six grazed dryland pastures established in 2002 at Lincoln University, Canterbury, are reported for Years 6 (2007/08) and 7 (2008/09). Lucerne (Medicago sativa) yielded 14.0 t DM/ha/yr and sheep liveweight (LW) production totalled 903 (2007/08) and 1 141 kg/ha/yr (2008/09). Metabolisable energy (ME) on offer (~134 GJ/ha/yr) and N yield (>500 kg/ha/yr) from the lucerne exceeded those of grass-based pastures. Yields (9.8- 11.2 t DM/ha/yr) and liveweight production (814-912 kg/ha/yr) from cocksfoot (Dactylis glomerata) pastures established with subterranean (Trifolium subterraneum) clover were greater than all other grass-based pastures. Annual ME was 79-96 GJ/ha and N yield was 269- 316 kg/ha from the cocksfoot, subterranean clover and volunteer white clover (T. repens) components. For Year 7, the contribution of unsown weeds and grasses in cocksfoot-based pastures was ~28% of total annual yield compared with 55% in ryegrass (Lolium perenne)/ white clover pastures. Consequently, the ME and N yields from sown pasture components in ryegrass/white clover pastures were lower than those from cocksfootbased pastures. These results indicate dryland farms with lucerne and/or cocksfoot/sub clover pastures can produce higher DM yields from more persistent pasture species. Persistence led to more ME and N on offer to grazing livestock, which resulted in higher liveweight production than from the ryegrass pastures. Keywords: balansa clover, Caucasian clover, growth rates, pasture quality, T. ambiguum, T. michelianum

Prediction of the intake potential of grass silage in the supplemented diets of lactating dairy cows

2002 ◽  
Vol 2002 ◽  
pp. 109-109 ◽  
Author(s):  
B. F. McNamee ◽  
V. B. Woods ◽  
D. J. Kilpatrick ◽  
F. J. Gordon
Keyword(s):  
Dairy Cows ◽  
Dry Matter ◽  
Farming Systems ◽  
Empirical Models ◽  
Dry Matter Intake ◽  
Grass Silage ◽  
Lactating Dairy Cows ◽  
The Uk

In the majority of farming systems in Ireland and the UK, grass silage is supplemented with varying types and levels of concentrates when offered to lactating dairy cows (Keadyet al., 1998). This supplementation results in a reduction in the intake of the silage. The aim of the current study was therefore to use data from the literature to develop empirical models that would allow the prediction of grass silage dry matter intake with increasing amounts of concentrate intake.

Progesterone clearance rate in lactating dairy cows with two levels of dry matter and metabolisable energy intakes

2002 ◽  
Vol 72 (1-2) ◽  
pp. 11-25 ◽  
Author(s):  
A.R Rabiee ◽  
D Dalley ◽  
J.M Borman ◽  
K.L Macmillan ◽  
F Schwarzenberger
Keyword(s):  
Dairy Cows ◽  
Clearance Rate ◽  
Dry Matter ◽  
Lactating Dairy Cows ◽  
Metabolisable Energy

scholarly journals Effects of different amounts of crude glycerol supplementation on dry matter intake, milk yield, and milk quality of lactating dairy cows grazing on a Kikuyu grass pasture

2021 ◽  
Vol 12 (4) ◽  
pp. 491-497
Author(s):  
Diana Marcela Valencia E ◽  
Luis Alfonso Giraldo ◽  
Alejandra Marin ◽  
Yury Tatiana Granja Salcedo ◽  
Telma Teresinha Berchielli
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Dry Matter ◽  
Crude Glycerol ◽  
Milk Quality ◽  
Dry Matter Intake ◽  
Lactating Dairy Cows ◽  
Kikuyu Grass

scholarly journals Predicting Daily Dry Matter Intake Using Feed Intake of First Two Hours after Feeding in Mid and Late Lactation Dairy Cows with Fed Ration Three Times Per Day

Animals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 104
Author(s):  
Shulin Liang ◽  
Chaoqun Wu ◽  
Wenchao Peng ◽  
Jian-Xin Liu ◽  
Hui-Zeng Sun
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Dry Matter ◽  
Prediction Equation ◽  
Dry Matter Intake ◽  
Validation Dataset ◽  
Nutrient Requirements ◽  
Independent Dataset ◽  
Lactating Dairy Cows ◽  
Proposed Model

The objective of this study was to evaluate the feasibility of using the dry matter intake of first 2 h after feeding (DMI-2h), body weight (BW), and milk yield to estimate daily DMI in mid and late lactating dairy cows with fed ration three times per day. Our dataset included 2840 individual observations from 76 cows enrolled in two studies, of which 2259 observations served as development dataset (DDS) from 54 cows and 581 observations acted as the validation dataset (VDS) from 22 cows. The descriptive statistics of these variables were 26.0 ± 2.77 kg/day (mean ± standard deviation) of DMI, 14.9 ± 3.68 kg/day of DMI-2h, 35.0 ± 5.48 kg/day of milk yield, and 636 ± 82.6 kg/day of BW in DDS and 23.2 ± 4.72 kg/day of DMI, 12.6 ± 4.08 kg/day of DMI-2h, 30.4 ± 5.85 kg/day of milk yield, and 597 ± 63.7 kg/day of BW in VDS, respectively. A multiple regression analysis was conducted using the REG procedure of SAS to develop the forecasting models for DMI. The proposed prediction equation was: DMI (kg/day) = 8.499 + 0.2725 × DMI-2h (kg/day) + 0.2132 × Milk yield (kg/day) + 0.0095 × BW (kg/day) (R2 = 0.46, mean bias = 0 kg/day, RMSPE = 1.26 kg/day). Moreover, when compared with the prediction equation for DMI in Nutrient Requirements of Dairy Cattle (2001) using the independent dataset (VDS), our proposed model shows higher R2 (0.22 vs. 0.07) and smaller mean bias (−0.10 vs. 1.52 kg/day) and RMSPE (1.77 vs. 2.34 kg/day). Overall, we constructed a feasible forecasting model with better precision and accuracy in predicting daily DMI of dairy cows in mid and late lactation when fed ration three times per day.

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.

EFFECT OF VARIETY OF ENSILED CORN AND HAY SUPPLEMENTATION ON MILK PRODUCTION

1968 ◽  
Vol 48 (1) ◽  
pp. 41-46 ◽  
Author(s):  
V. S. Logan ◽  
L. J. Fisher ◽  
P. S. Hayden
Keyword(s):  
Dairy Cows ◽  
Milk Production ◽  
Dry Matter ◽  
Corn Silage ◽  
Lactating Dairy Cows

Vacuum silages made from Pioneer 383 and Pride 5 corn were fed with concentrate and with and without hay to lactating dairy cows. Yields per hectare in terms of dry matter were 8,850 kg for Pioneer 383 and 8,350 kg for Pride 5. Intake of silage dry matter was significantly higher (P < 0.05) for Pride 5 (11.4 kg/day) than for Pioneer 383 (9.8 kg/day), and significantly lower (P < 0.05) for both silages when hay was fed (11.4 kg/day versus 9.7 kg/day). Fat-corrected milk production was significantly higher (P < 0.05) for Pride 5 (17.0 kg/day) than for Pioneer 383 silage (15.8 kg/day), and significantly higher (P < 0.05) when hay was fed, than without hay supplementation (167 kg/day versus 16.0 kg/day). Utilization of silage dry matter in terms of fat-corrected milk production per hectare was 10,486 kg for Pride 5 corn silage and 11,176 kg for Pioneer 383 corn silage.

scholarly journals Nutritional Value of Wet Corn Gluten Feed for Sheep and Lactating Dairy Cows

1988 ◽  
Vol 71 (5) ◽  
pp. 1204-1210 ◽  
Author(s):  
S.L. Gunderson ◽  
A.A. Aguilar ◽  
D.E. Johnson ◽  
J.D. Olson
Keyword(s):  
Dairy Cows ◽  
Nutritional Value ◽  
Lactating Dairy Cows ◽  
Corn Gluten ◽  
Corn Gluten Feed ◽  
Wet Corn Gluten Feed ◽  
Gluten Feed

The effect of compound composition and silage characteristics on silage intake, feeding behaviour, production of milk and live-weight change in lactating dairy cows

1991 ◽  
Vol 52 (1) ◽  
pp. 11-19 ◽  
Author(s):  
D. A. Jackson ◽  
C. L. Johnson ◽  
J. M. Forbes
Keyword(s):  
Dairy Cows ◽  
Weight Change ◽  
Milk Fat ◽  
Feeding Behaviour ◽  
Dry Matter ◽  
Live Weight ◽  
Productive Performance ◽  
Lactating Dairy Cows ◽  
Principal Energy ◽  
Friesian Cows

ABSTRACTAn experiment was carried out to investigate the effects of compound composition and silage characteristics on silage intake, feeding behaviour and productive performance of dairy cows during the first 25 weeks of lactation. Over a period of 3 years, 36 lactating British Friesian cows (12 per year), in their third or later lactations, were divided into two groups. The cows in each group received either compound S, in which the principal energy source was cereal starch, or compound F containing a mixture of high quality digestible fibre. Cows given compound F ate 2·2 kg more silage dry matter per day (P < 0·05). The type of compound had no effect on the frequency of silage feeding and the time spent eating was significantly different only over weeks 10 to 25 of lactation (P < 0·05), with cows on compound F spending on average 20 min longer feeding per day. Cows on compound F produced 1·7 kg more milk per day than cows on compound S. Although there were no significant differences in the concentration of milk constituents, compound F was associated with higher yields of milk constituents. Significant differences were found between the years of experiment in the frequency of feeding (P < 0·05) and also in the concentration of milk protein and milk fat. There were no significant differences in the magnitude of live-weight change between treatments or year of experiment.

The influence of heavily fertilized grass on mineral metabolism of dairy cows

1970 ◽  
Vol 74 (1) ◽  
pp. 11-21 ◽  
Author(s):  
A. J. Mudd
Keyword(s):  
Dairy Cows ◽  
Dry Matter ◽  
Mineral Metabolism ◽  
Matter Content ◽  
Dry Matter Content ◽  
Lactating Dairy Cows ◽  
Dietary Potassium ◽  
Calcium And Phosphorus ◽  
Negative Balance

SUMMARYGroups of lactating dairy cows were fed on grass which had received various amounts of nitrogen and potash fertilizers. In the early part of the season not only was the herbage concentration of calcium and phosphorus lower in grass which had received potash fertilizer but in addition the ‘availability’ of the calcium to cows was depressed. Grass which had received large amounts of nitrogen fertilizer had a comparatively low dry-matter content in the autumn. Cows fed such grass were in negative balance for calcium at this time. As expected high dietary potassium gave rise to high excretion of potassium in the urine which in turn was correlated with high excretion of magnesium. These various factors are likely to affect the incidence of metabolic disease.

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