Metabolisable protein supply to lactating dairy cows increased with increasing dry matter concentration in grass-clover silage

ABSTRACTThe influence of the level of dry-matter intake and the dry-matter concentration in the diet on the water consumption of dairy cows in early lactation was investigated for a 2-month period from early August to early October. The importance of the various components of weather on voluntary water intake was also examined. The cows used in the experiment either grazed pasture alone, or were offered pasture and pasture hay supplements. Mean voluntary water intake increased by 2·30 kg per cow per day for every additional kg dry matter consumed and also increased by 0·053 kg per cow per day for each g/kg increase in dry matter concentration. Of the climatic factors, rainfall had the greatest single influence on the daily fluctuations in voluntary water intake and this was negative. Intake was also negatively related to minimum temperature, relative humidity and wind, and positively related to sunshine and evaporation. Although maximum temperature per se had no apparent influence on intake, it showed a positive relationship after the removal of the effects of rainfall. A model for the prediction of total water consumption is:Total water consumption (kg per cow per day) = 11·34 + 4·63 dry-matter intake (kg per cow per day) –0·036 dry-matter concentration (g/kg) + 0·84 mean temperature (°C).This can only be used to predict the water requirements of lactating dairy cows in different environments.

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Amino acid profile of metabolisable protein in lactating dairy cows is affected by dry matter concentration in grass-clover silage

Animal Feed Science and Technology ◽

10.1016/j.anifeedsci.2018.01.002 ◽

2018 ◽

Vol 237 ◽

pp. 166-174 ◽

Cited By ~ 1

Author(s):

M. Johansen ◽

P. Lund ◽

M.R. Weisbjerg

Keyword(s):

Amino Acid ◽

Dairy Cows ◽

Dry Matter ◽

Amino Acid Profile ◽

Lactating Dairy Cows ◽

Dry Matter Concentration ◽

Matter Concentration

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Short communication: Varying dietary dry matter concentration through water addition: Effect on nutrient intake and sorting of dairy cows in late lactation

Journal of Dairy Science ◽

10.3168/jds.2011-4509 ◽

2012 ◽

Vol 95 (2) ◽

pp. 850-855 ◽

Cited By ~ 16

Author(s):

J.A. Fish ◽

T.J. DeVries

Keyword(s):

Dairy Cows ◽

Nutrient Intake ◽

Dry Matter ◽

Short Communication ◽

Water Addition ◽

Dry Matter Concentration ◽

Matter Concentration

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The Effect of protein supply and level of supplementary concentrate on rumen metabolism of lactating dairy cows

Proceedings of the British Society of Animal Production (1972) ◽

10.1017/s0308229600018006 ◽

1990 ◽

Vol 1990 ◽

pp. 16-16

Author(s):

Rosemary E Poots ◽

E F Unsworth

Keyword(s):

Dairy Cows ◽

Dry Matter ◽

Agricultural Research ◽

Dry Matter Intake ◽

Agricultural Research Institute ◽

Low Protein ◽

Rumen Metabolism ◽

Lactating Dairy Cows ◽

Low Levels ◽

Protein Supply

Previous research at the Agricultural Research Institute of Northern Ireland has shown that equivalent milk yields can be obtained by feeding high levels of low-protein supplementary concentrate or low levels of high-protein supplementary concentrate. The latter may be due to an increase in dry matter intake and thus energy available for milk yield (an indirect effect) or an increase in amino acid supply from increased protein in the diet (a direct effect) or a combination of these. The experiment compared the effect of varying levels of protein supplement on rumen fermentation characteristics in lactating dairy cows.

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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 ◽

10.3390/ani11010104 ◽

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.

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

Canadian Journal of Animal Science ◽

10.4141/cjas68-006 ◽

1968 ◽

Vol 48 (1) ◽

pp. 41-46 ◽

Cited By ~ 1

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.

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Accumulation, organic carbon and dry matter concentration of sediment in commercial channel catfish ponds

Aquacultural Engineering ◽

10.1016/j.aquaeng.2003.10.001 ◽

2004 ◽

Vol 30 (3-4) ◽

pp. 115-126 ◽

Cited By ~ 29

Author(s):

James A. Steeby ◽

John A. Hargreaves ◽

Craig S. Tucker ◽

Sue Kingsbury

Keyword(s):

Organic Carbon ◽

Channel Catfish ◽

Dry Matter ◽

Dry Matter Concentration ◽

Catfish Ponds ◽

Matter Concentration

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

Animal Science ◽

10.1017/s000335610000564x ◽

1991 ◽

Vol 52 (1) ◽

pp. 11-19 ◽

Cited By ~ 11

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.

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