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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Inclusão de cama de frango em dietas à base de palma forrageira (Opuntia ficus-indica Mill) para vacas mestiças em lactação: 1. Consumo e produção
Maria Carla dos Santos Magalhães,Antonia Sherlânea Chaves Véras,Marcelo de Andrade Ferreira,Francisco Fernando Ramos de Carvalho,Paulo Roberto Cecon,José Nilson de Melo,Wellington Samay de Melo,Jair Teixeira Pereira +7 more
TL;DR: Evaluating the effect of diferents of broiler litter inclusion with 45% forage cactus associaded to sugar cane bagasse, urea and cotonsead meal on nutrient intake and milk yield and the time necessary to adaptation of the animals to diets found no significant diference.
Journal ArticleDOI
Nutritional evaluation of ammoniated ensiled threshed sorghum top as a feed for goats
TL;DR: A dietary inclusion level of 350 g/kg UTST (replacing 50 % of DBG) in the diet was the most suitable level for goats under the current experimental conditions.
Journal ArticleDOI
Performance and nutritional parameters of growing heifers fed corn silage or sugar cane with concentrate
Adriano Henrique do Nascimento Rangel,José Maurício de Souza Campos,André Soares de Oliveira,Sebastião de Campos Valadares Filho,Anderson Jorge de Assis,Shirley Motta de Souza +5 more
TL;DR: In this article, a study of 20 novilhas leiteiras alimentadas with dieta a base of silagem de milho and with 1,3 kg/dia of concentrado was conducted.
Journal ArticleDOI
Effect of roughage-to-concentrate ratios combined with different preserved tropical forages on the productive performance of feedlot lambs
C. de Oliveira Nascimento,S.A. Santos,D. dos S. Pina,Manuela Silva Libânio Tosto,Luís Fernando Batista Pinto,D.N. Eiras,D.Y.C. de Assis,Alexandre Fernandes Perazzo,M.Lg.M.L. de Araújo,J. A. G. Azevêdo,Gerson Barreto Mourão,G. G. P. de Carvalho +11 more
TL;DR: In this article, the authors investigated the production performance of lambs fed diets containing different roughage sources and formulated with various roughage-to-concentrate ratios (R:C).
Journal ArticleDOI
Substituição do Milho pela Farinha de Varredura (Manihot esculenta, Crantz) na Ração de Bezerros Holandeses.: 1. Desempenho e Parâmetros Sangüíneos
João Ricardo Vieira Jorge,Lúcia Maria Zeoula,Ivanor Nunes do Prado,Luiz Juliano Valério Geron +3 more
TL;DR: The objective of this project was to evaluate the effects of different replacement levels of corn for cassava meal on the dry matter intake and feed:gain ratio, daily weight gain and levels of blood hematocrit, glucose and urea in intact Holstein calves.
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%.