Raw material and nutrient lexicon

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Non-fibre carbohydrates (NFC)

The non-fibre carbohydrates (NFC) are the soluble carbohydrates such as starch, sugar and pectins in a feed. These cellular ingredients are rapidly fermented in the rumen of ruminants and are thus important for the protein synthesis of the rumen microbes as a source of energy.

The NFC is a calculated quantity that cannot be directly determined analytically.

NFC = dry matter-(crude ash + crude protein + crude fat + NDF)(all data in g/kg T)

The NFC 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 into account NDF, ADF and NFC.

Non-fibre carbohydrates (NFC)
ECM*** kg per day	Drying standing time	Pre- 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