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
More filters
Journal ArticleDOI
Desempenho leiteiro de vacas alimentadas com caroço de algodão em dieta à base de palma forrageira
Airon Aparecido Silva de Melo,Marcelo de Andrade Ferreira,Antonia Sherlânea Chaves Véras,Mário de Andrade Lira,Luiz Evandro de Lima,Ricardo Alexandre Silva Pessoa,Safira Valença Bispo,Ana Maria Duarte Cabral,Marcílio de Azevedo +8 more
TL;DR: The results suggest that addition of the whole cottonseed in up to 25% of dry matter improves the Holstein cows performance.
Journal ArticleDOI
Tifton hay, soybean hulls, and whole cottonseed as fiber source in spineless cactus diets for sheep.
Suellen Brandão de Miranda Costa,Marcelo de Andrade Ferreira,Marcelo de Andrade Ferreira,Ricardo Alexandre Silva Pessoa,Ângela Maria Vieira Batista,Alenice Ozino Ramos,Maria Gabriela da Conceição,Luiz Henrique dos Santos Gomes +7 more
TL;DR: It is recommended the use of tifton hay or soybean hulls as important additional source of fiber in forage spineless cactus diets for sheep in finishing phase.
Journal ArticleDOI
Multi-objective simulation and optimisation of dairy sheep farms: Exploring trade-offs between economic and environmental outcomes
TL;DR: In this article, a decision support tool for sheep farming systems (PASTOR-DSS) was developed to investigate trade-offs between economic and environmental objectives on Spanish dairy sheep farms.
Journal ArticleDOI
Effects of stage of maturity on ensiling characteristics and ruminal nutrient degradability of oat silage.
Arif F Mustafa,Philippe Seguin +1 more
TL;DR: It was concluded that chemical composition and ruminal nutrient degradability of oat silage are significantly influenced by stage of maturity.
Journal ArticleDOI
Effectiveness of calcium oxide and autoclaving for the detoxification of castor seed meal in finishing diets for lambs
Máikal Souza Borja,Ronaldo Lopes Oliveira,T.M. Silva,Leilson Rocha Bezerra,N.G. Nascimento Júnior,A. D. P. Borja +5 more
TL;DR: In this paper, the authors evaluated the efficiency of a detoxification process (calcium oxide (CaO) levels and autoclaving times) on castor seed meal and to test the effects of diets incorporating detoxified castorseed meal on the performance, digestibility, ingestive behavior, blood concentrations, carcass weight, and in vitro gas production in lambs.
References
More filters
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%.