A revised CNCPS
feed carbohydrate fractionation scheme for formulating rations for ruminants.
Los datos sobre la composicion de alimentos, se obtuvieron de la libreria tropical del CNCPS
 y de tablas de composicion de alimentos del NRC  para valores de total de nutrimentos digestibles (TND), fibra detergente neutro (FDN) y fibra detergente neutro efectiva (FDNe), de los ingredientes que no se encontraron en la primera fuente.
64) in the current study was in agreement with the values reported by INRA  and Metcalf et al  and lower than NRC  and CNCPS
Table 6-1 Carbohydrate components of feed materials Feed Source Carbohydrate Component Sugar cane, sugar beets Sucrose Starchy plants and roots Maltose Grains, seeds, tubers Starch Potatoes, tubers, artichokes Inulin Citrus fruits, apples Pectins Cottonseed, sugar beets Raffinose Acacia trees Gums Fibrous portion of plants Cellobiose Fibrous portion of plants Hemicellulose Corn cobs, wood Xylose Plant cell walls Cellulose Liver and muscle Glycogen Table 6-2 The carbohydrate pools used in the CNCPS
and beef NRC level II Carbohydrate Fraction Fraction Components A Sugars, organic acids, oligosaccharides B1 Starch, pectins B2 Digestible NDF C Lignin Source: Fox et al.
Subsequently, the protein fractionation was calculated for the five fractions (A, B1, B2, B3, and C) by the CNCPS
system (SNIFFEN et al.
considera digestibilidades verdadeiras de 100, 100, 80 e 0% para as fracoes nitrogenadas [B.
There are two systems of protein pools currently in use in dairy nutrition: the dairy NRC system and the CNCPS
Many trials indicated that the CNCPS
fractions closely correlated with some indices of rumen fermentation, including the duodenal flow of microbial N (Offner and Sauvant, 2004) and the in situ undegraded dietary protein (UDP) for ruminants (Shannak et al.
TDN content of diets was obtained by the CNCPS
(Cornell Net Carbohydrate and Protein System): TDN (%) = DCP (%) + 2.
The Net Carbohydrate and Protein System for Evaluating Herd Nutrition and Nutrient Excretion, CNCPS
The estimates of weight gain as a function of metabolizable energy intake, calculated (crossbred males with 340 kg BW) according to the CNCPS
(2003), were similar to the observed weight gains (Tables 4 and 5).
82) for DMI prediction by the CNCPS
model than our study for a similar type of animal.