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Update of the Dutch protein evaluation system for ruminants: the DVE/OEB2010 system
- G. Duinkerken, M. Blok, +4 authors S. Tamminga
- The Journal of Agricultural Science
- 19 November 2010
SUMMARY In the current Dutch protein evaluation system (the DVE/OEB1991 system), two characteristics are calculated for each feed: true protein digested in the intestine (DVE) and the rumen… Expand
Ruminal behaviour of structural carbohydrates, non-structural carbohydrates and crude protein from concentrate ingredients in dairy cows.
Resultaten van een onderzoek naar afbraakeigenschappen van Neutral Detergent Fibre (NDF), zetmeel en ruw eiwit in krachtvoeringredienten
In sacco degradation of organic matter and crude protein of fresh grass (Lolium perenne) in the rumen of grazing dairy cows
In three experiments, carried out in 1985 and 1986 in the Netherlands, the effects of herbage maturation and rate of nitrogen fertilization on rumen degradability of organic matter (OM) and crude… Expand
Modelling production and portal appearance of volatile fatty acids in dairy cows.
Influence of declining level of feed intake and varying the proportion of starch in the concentrate on rumen fermentation in dairy cows
Five dairy cows fitted with large rumen cannulae were fed diets of 23 pelleted concentrate containing five graded levels of starch between 8 and 32%. Intake declined at five equal intervals from 19.4… Expand
Digestion and nitrogen metabolism of grass fed dairy cows
- A. M. Vuuren
Theoretically a 600 kg cow producing 25 kg milk per day can utilize dietary nitrogen (N) with a maximum efficiency of 40-45%. The actual efficiency of N utilization in cows grazing intensively… Expand
Influence of declining level of feed intake and varying the proportion of starch in the concentrate on milk production and whole tract digestibility in dairy cows
Five dairy cows fitted with a large diameter rumen cannula were fed diets of two-thirds pelleted concentrate that contained 5 graded levels of starch from 8 to 32%. Measurements were made over one… Expand
Influence of declining level of feed intake and varying the proportion of starch in the concentrate on rumen ingesta quantity, composition and kinetics of ingesta turnover in dairy cows
Five dairy cows fitted with large-diameter rumen cannulae were fed diets of two-thirds pelleted concentrate that contained 5 proportions of starch (8, 14, 20, 26 or 32%). Measurements were made over… Expand
Development of a model for the prediction of feed intake by dairy cows: 1. Prediction of feed intake
Abstract A study was undertaken to develop a model for the prediction of dry matter intake by lactating Holstein Friesian dairy cows. To estimate the model parameters, a calibration dataset was… Expand
Ryegrass Versus Corn Starch or Beet Pulp Fiber Diet Effects on Digestion and Intestinal Amino Acids in Dairy Cows
Abstract Changes in digestion and AA supply in dairy cows were studied when fresh grass was partly replaced by concentrate mixtures based either on corn starch or sugar beet pulp fiber. Treatments… Expand