Raw material and nutrient lexicon

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Neutral Detergent Fibre (NDF)

The neutral detergent fibre (NDF) comprises the hemicelluloses, cellulose and lignin and thus essentially represents the plant cell walls. In addition, silicic acid and silicates are also included in the usual NDF analysis. These components can be determined and deducted by subsequent ashing. The NDF content of a feed determined in this way is called "NDForg"

The NDForg content of a feed is important when designing rations for dairy cows and is used in particular in Great Britain and North America. The DLG (Deutsche Landwirtschaftsgesellschaft e.V.) gives the target values shown in the following table for the planning of TMR taking NDF, ADF and NFC into account.

Neutral Detergent Fibre (NDF)
ECM*** kg per day	Drying standing time	Pre- preparation ting time 15 days before birth	Lact. early 45-40	Lact. medium 35-30	Lact. late 25-20
T, g/kg min max ADF, g/kg T min NDF, g/kg T min max NDF (G)*, g/kg T min NFC, g/kg min max NEL, MJ/kg T min max nXP, g/kg T min max RNB, g/kg T min.	300 300 400 350 250 5,1 5,5 100 125 0	350 220 350 250 300 350 6,5 6,7 140 150 0	450 180 280 320 180 350 420** 7,1 7,3 170 1	400 550 200 380 240 380 6,9 7,0 160 1	400 600 230 440 300 340 6,6 6,7 145 0