Journal ArticleDOI
A net carbohydrate and protein system for evaluating cattle diets: II. Carbohydrate and protein availability.
Charles J. Sniffen,J D O'Connor,P.J. Van Soest,Danny G. Fox,James B. Russell,James B. Russell,James B. Russell +6 more
TLDR
The Cornell Net Carbohydrate and Protein System has a submodel that predicts rates of feedstuff degradation in the rumen, the passage of undegraded feed to the lower gut, and the amount of ME and protein that is available to the animal.Abstract:
The Cornell Net Carbohydrate and Protein System (CNCPS) has a submodel that predicts rates of feedstuff degradation in the rumen, the passage of undegraded feed to the lower gut, and the amount of ME and protein that is available to the animal. In the CNCPS, structural carbohydrate (SC) and nonstructural carbohydrate (NSC) are estimated from sequential NDF analyses of the feed. Data from the literature are used to predict fractional rates of SC and NSC degradation. Crude protein is partitioned into five fractions. Fraction A is NPN, which is trichloroacetic (TCA) acid-soluble N. Unavailable or protein bound to cell wall (Fraction C) is derived from acid detergent insoluble nitrogen (ADIP), and slowly degraded true protein (Fraction B3) is neutral detergent insoluble nitrogen (NDIP) minus Fraction C. Rapidly degraded true protein (Fraction B1) is TCA-precipitable protein from the buffer-soluble protein minus NPN. True protein with an intermediate degradation rate (Fraction B2) is the remaining N. Protein degradation rates are estimated by an in vitro procedure that uses Streptomyces griseus protease, and a curve-peeling technique is used to identify rates for each fraction. The amount of carbohydrate or N that is digested in the rumen is determined by the relative rates of degradation and passage. Ruminal passage rates are a function of DMI, particle size, bulk density, and the type of feed that is consumed (e.g., forage vs cereal grain).read more
Citations
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Changes of chemical composition to high altitude results in Kobresia littledalei growing in alpine meadows with high feeding values for herbivores
TL;DR: In this paper, the relationship between changes of chemical composition of Kobresia littledalei growing at different altitudinal gradients on alpine meadows of the Tibetan Plateau and its nutritive values to local herbivores was investigated.
Journal ArticleDOI
Uréia em dietas para bovinos: consumo, digestibilidade dos nutrientes, ganho de peso, características de carcaça e produção microbiana
Mônica Lopes Paixão,Sebastião de Campos Valadares Filho,Maria Ignez Leão,Rilene Ferreira Diniz Valadares,Mário Fonseca Paulino,Marcos Inácio Marcondes,Mozart Alves Fonseca,Polyana Albino Silva,Douglas dos Santos Pina +8 more
TL;DR: Feeding high concentrate diets to steers increased energy intake and improved performance and efficiency of microbial protein synthesis was not affected by treatments.
Journal ArticleDOI
Características morfológicas, qualidade nutritiva e produção de metano de gramíneas tropicais no Brasil
Danilo Montalvão Lima,Adibe Luiz Abdalla Filho,Paulo de Mello Tavares Lima,Gabriel Zanuto Sakita,Tairon Pannunzio Dias e Silva,Concepta McManus,Adibe Luiz Abdalla,Helder Louvandini +7 more
TL;DR: In this article, the authors evaluated three tropical forage species for their in vitro methane (CH 4 ) production and organic matter degradability, in order to determine the relationships between forage grass nutritive quality and CH 4 production.
Influence of distillers dried grains with solubles (Starprot) in dairy cow feeding
M. Urdl,J. HäUsler,G. MaierHofer +2 more
TL;DR: In this paper, the suitability of distillers dried grains with solubles (ddGs) from two grain spe cies (wheat, corn) as a protein supplement for the feeding of dairy cows was investigated.
Journal ArticleDOI
Efeito de níveis de melão em substituição ao milho moído sobre o desempenho, o consumo e a digestibilidade dos nutrientes em ovinos Morada Nova.
Cláudio Adriano Correia de Lima,Guilherme Ferreira da Costa Lima,Roberto Germano Costa,Ariosvaldo Nunes de Medeiros,Emerson Moreira de Aguiar,Valdi de Lima Júnior +5 more
TL;DR: Performance, intake, and nutrients digestibility of 32 Morada Nova confined lambs were evaluated, using diets with increasing levels of melon in substitution of corn grain, and there was a better performance for males compared with females, as the level ofmelon increased.
References
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Journal ArticleDOI
Methods for dietary fiber, neutral detergent fiber, and nonstarch polysaccharides in relation to animal nutrition.
TL;DR: In addition to NDF, new improved methods for total dietary fiber and nonstarch polysaccharides including pectin and beta-glucans now are available and are also of interest in rumen fermentation.
Forage fiber analyses (apparatus, reagents, prcedures, and some applications)
H.K. Goering,P.J. Van Soest +1 more
Journal ArticleDOI
A net carbohydrate and protein system for evaluating cattle diets: I. Ruminal fermentation.
TL;DR: The Cornell Net Carbohydrate and Protein System (CNCPS) has a kinetic submodel that predicts ruminal fermentation and the protein-sparing effect of ionophores is accommodated by decreasing the rate of peptide uptake by 34%.