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
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Desempenho em confinamento de bovinos de corte, castrados ou não, alimentados com teores crescentes de farelo do mesocarpo de babaçu
Nelson Rafael da Silva,Ana Cristina Holanda Ferreira,Cristian Faturi,Gerson Fausto da Silva,Regis Luis Missio,José Neuman Miranda Neiva,Vera Lúcia de Araújo,Emerson Alexandrino +7 more
TL;DR: Bulls had higher daily weight gain than steers, reflecting a better feed conversion, and babassu mesocarp meal can be fed to feedlot to the 60% level of inclusion in the concentrate, replacing corn grain.
Journal ArticleDOI
Avaliação de genótipos de milheto para silagem no semiárido
Ricardo Martins Araujo Pinho,Edson Mauro Santos,José Avelino Santos Rodrigues,Carlos Henrique Oliveira Macedo,Fleming Sena Campos,João Paulo de Farias Ramos,Higor Fábio Carvalho Bezerra,Alexandre Fernandes Perazzo +7 more
TL;DR: The genotypes studied were equivalent in both the evaluation of the plants and the Evaluation of silage, which can be used as an alternative fodder in semiarid regions.
Journal ArticleDOI
Efeito da combinação de óleo de soja e monensina na dieta sobre o consumo de matéria seca e a digestão em vacas lactantes
Eduardo da Costa Eifert,Rogério de Paula Lana,Maria Ignez Leão,Pedro Braga Arcuri,Sebastião de Campos Valadares Filho,Webel Machado Leopoldino,Juliana da Silva Oliveira,Cláudia Batista Sampaio +7 more
TL;DR: In this article, the effects of the combination of soybean oil and monensin in lactating dairy cow diets on dry matter intake, total and partial digestibility of the nutrients and ruminal fermentation and microbial synthesis were evaluated.
Journal ArticleDOI
Growth Performance and Digestibility in Karadi Lambs Receiving Different Levels of Pomegranate Peels
TL;DR: In this paper, the effect of different ratios of pomegranate peel in diets of Karadi lambs (0, 1, 2% or 4% as control, T1, T2 and T3, respectively) on body weight, total body gain, average daily gain, daily feed intake and apparent digestibility of nutrients was determined.
Journal ArticleDOI
Effect of increasing levels of wasted date palm on digestion, rumen fermentation and microbial protein synthesis in sheep
A. Khezri,O. Dayani,R. Tahmasbi +2 more
TL;DR: The increase in microbial protein synthesis and concomitant reduction in ruminal NH3 -N concentration and blood urea nitrogen in response to wasted date supply suggest improved efficiency of ruminal nitrogen metabolism without adverse effects on fermentation characteristics and animal performance.
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%.