Substitution of crude cell wall for neutral detergent fibre in the equations of the Cornell Net Carbohydrate and Protein System that predict carbohydrate fractions: application to sunflower (Helianthus annuus L.) - Queiroz, Mário Adriano Ávila; Fukushima, Romualdo Shigueo; Gomide, Catarina Abdalla; Braga, M. R (Animal, 2008)