Results 271 to 280 of about 377,852 (303)

In vitro cumulative gas production techniques: History, methodological considerations and challenges

Animal Feed Science and Technology, 2005
Methodology used to measure in vitro gas production is reviewed to determine impacts of sources of variation on resultant gas production profiles (GPP). Current methods include measurement of gas production at constant pressure (e.g., use of gas tight syringes), a system that is inexpensive, but may be less sensitive than others thereby affecting its ...
Rymer, C., Huntington, J. A., Williams, B. A., Givens, D. I.   +3 more
openaire   +5 more sources

Kinetics of fiber digestion from in vitro gas production

Journal of Animal Science, 1994
In vitro gas production, measured by computer-interfaced pressure sensors, was used to follow the digestion of a crystalline processed cellulose, a bacterial cellulose, and mixtures of these substrates by mixed ruminal bacteria. A first-order, substrate limited model (simple exponential with lag) and two bacterial growth models (logistic, Gompertz ...
P, Schofield, R E, Pitt, A N, Pell
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The in vitro gas production technique: Limitations and opportunities

Animal Feed Science and Technology, 2005
This preface outlines the reasons for undertaking the special issue, comments on the review process that was used, provides a brief summary of the papers included and discusses some of the implications of these papers on in vitro gas technique methodology and its applications.
U. Krishnamoorthy, C. Rymer, P.H. Robinson   +2 more
openaire   +1 more source

In vitro gas production: a technique revisited

Journal of Animal Physiology and Animal Nutrition, 1997
SummaryThe stoichiometrical relationship between gas volumes and short chain fatty acid (SCFA) production has been exemplified for an in vitro gas test based on the bicarbonate buffer. It is outlined that, even though variation in the molar proportion of acetate, propionate and butyrate will influence gas volumes, quite similar amounts of total carbon,
M. Blümmel, H. P. S. Makkar, K. Becker
openaire   +1 more source

Micronized Sorghum Grain. II. Influence in In Vitro Digestibility, In Vitro Gas Production and Gelatinization

Journal of Animal Science, 1975
Studies were conducted to investigate the effects of micronizing sorghum grain on in vitro dry matter disappearance (IVDMD), in vitro gas production and gelatinization. In trial 1, micronized sorghum (MS) was compared with dry rolled sorghum (DRS). In trial 2, three densities of MS (412, 322 and 232 g/l) were compared to DRS.
D. C. Croka, D. G. Wagner
openaire   +1 more source

A ring test of a wireless in vitro gas production system

Animal Production Science, 2013
The in vitro gas production (GP) technique has been widely used for feed evaluation. However, variability in results limits useful comparisons. Results from a ring test undertaken in four laboratories (Italy – IT, Spain – SP, Wales – WA and Denmark – DK) using the same wireless equipment (ANKOM Technology), same substrates and same laboratory protocol ...
Cornou C, Hindrichsen IK, Worgan H, Bakewell E, Yáñez Ruiz DR, Abecia L, TAGLIAPIETRA, FRANCO, CATTANI, MIRKO, Lindhardt Drejer Storm IM, Ritz C, Hansen HH   +10 more
openaire   +4 more sources

Inocula differences affect in vitro gas production kinetics

BSAP Occasional Publication, 1998
The kinetics of gas production during ruminal fermentation may provide valuable information about foods that can be used to formulate diets and model animal responses. However, measurement of digestion kinetics is affected by methodology and techniques must be established that provide accurate and precise estimates of kinetic parameters.
D. R. Mertens, P. J. Weimer, G. M. Waghorn   +2 more
openaire   +1 more source

In vitro gas production profiles and fermentation end‐products in processed barley, maize and milo

Journal of the Science of Food and Agriculture, 2009
AbstractBACKGROUND: An experiment was carried out to establish whether using a pre‐compacting device (expander) changes the contribution of dry matter (DM) and degradative behaviour of grains of barley, maize and milo pre‐processed by grinding over the different DM fractions (non‐washable (NWF), insoluble washable (ISWF) and soluble washable (SWF ...
Azarfar, A., Namgay, K., Pellikaan, W.F., Tamminga, S., van der Poel, A.F.B.   +4 more
openaire   +3 more sources

In vitro gas production from colon contents in electrolyte supplemented horses

2012
Electrolyte overload is a common preventive practice. However, its impact on the fermentation process has never been studied. This work aimed to evaluate the impact of different levels of electrolyte supplementation on fermentation process from right dorsal colon contents of horses.
F. A. Almeida, J. A. Martins, V. P. Silva, P. Trigo, M. B. Pereira, P. M. Galvão, A. T. Silva, A. C. T. Miranda   +7 more
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Rumen fluid preservation for in vitro gas production systems

Animal Feed Science and Technology, 2022
Bereket Zeleke Tunkala, Kristy DiGiacomo, Pablo S. Alvarez Hess, Frank R. Dunshea, Brian J. Leury   +4 more
openaire   +1 more source