2008
DOI: 10.1017/s1751731108002127
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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.)

Abstract: Prediction of carbohydrate fractions using equations from the Cornell Net Carbohydrate and Protein System (CNCPS) is a valuable tool to assess the nutritional value of forages. In this paper, these carbohydrate fractions were predicted using data from three sunflower (Helianthus annuus L.) cultivars, fresh or as silage. The CNCPS equations for fractions B 2 and C include measurement of ash and protein-free neutral detergent fibre (NDF) as one of their components. However, NDF lacks pectin and other non-starch … Show more

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Cited by 8 publications
(8 citation statements)
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“…On the light of these findings, a rationale behind the relationship between degradability and lignin content may be as follows: what differentiates DM from NDF is the fraction containing the cell solubles and neutral detergent soluble carbohydrates such as pectic substances, β-glucans, fructans, galactans, etc. (Hall, 2003;Queiroz et al, 2008).…”
Section: Slopes Between Forage Degradability and Lignin Methodsmentioning
confidence: 99%
“…On the light of these findings, a rationale behind the relationship between degradability and lignin content may be as follows: what differentiates DM from NDF is the fraction containing the cell solubles and neutral detergent soluble carbohydrates such as pectic substances, β-glucans, fructans, galactans, etc. (Hall, 2003;Queiroz et al, 2008).…”
Section: Slopes Between Forage Degradability and Lignin Methodsmentioning
confidence: 99%
“…Visto isso, foi criada outra maneira de se obter a parede celular das plantas, o procedimento Parede Celular (PC). Este preserva praticamente todos os componentes dessa parte da planta, porém é mais laborioso e demorado do que os anteriormente citados (MORRISON, 1972a(MORRISON, , 1972bWALLIS, 1990;FUKUSHIMA;HATFIELD, 2004;QUEIROZ et al, 2008) As estruturas cristalinas contêm cerca de 500 a 14.000 moléculas de glicose β-1,4…”
Section: A Parede Celular Vegetalunclassified
“…Outros autores, utilizando gramíneas de clima temperado alcançaram R 2 de calibrações iguais a 0,94 (FDN), 0,93 (LDA) e 0,97 (DIVMS;RABOTNIKOF et al, 1995). O parâmetro para LDA foi melhor do que o do presente estudo.…”
Section: Calibrações E Validações Internasunclassified
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“…na disponibilidade dos nutrientes de cada fração. As frações, com base no teor de CHO, são: A, B 1 , B 2 e C.A fração A, é composta principalmente pelos carboidratos solúveis e é rapidamenteFukushima et al (2008), questionaram a inclusão da pectina na fração B 1 do CNCPS e a colocaram na fração A, junto aos carboidratos solúveis da parede celular, também denominados fibra solúvel (FS), e então, propuseram que esta fração fosse composta exclusivamente pelo amido. fenilalanina amônia-liase, enzima reguladora do metabolismo fenólico nas células vegetais, é convertida em ácido cinâmico, que é precursor do ácido ρ-coumárico(CAMM; TOWERS, 1973).…”
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