A descriptive model is presented that can explain changes in the amount of methane (CH4)
formed in the rumen in relation to passage rate, feed type, and the effects of pH and …

Protein metabolism in the rumen is the result of metabolic activity of ruminal microorganisms.
The structure of the protein is a key factor in determining its susceptibility to microbial …

Background Methane represents 16% of total anthropogenic greenhouse gas emissions. It
has been estimated that ruminant livestock produce ca. 29% of this methane. As individual …

The aim of this paper is to review the role of methane in the global warming scenario and to
examine the contribution to atmospheric methane made by enteric fermentation, mainly by …

Ruminal acidosis continues to be a common ruminal digestive disorder in beef cattle and
can lead to marked reductions in cattle performance. Ruminal acidosis or increased …

Members of the domain Archaea contribute about 0.3 to 3.3% of the microbial small subunit
(16S and 18S) rRNA in the rumen (22, 39, 60). Archaea have a range of different …

The Cornell Net Carbohydrate and Protein System (CNCPS) is a mathematical model that
estimates cattle requirements and nutrient supply based on animal, environmental, and feed …

Six natural plant extracts and three secondary plant metabolites were tested at five doses (0,
0.3, 3, 30, and 300 mg/L) and two different pH (7.0 and 5.5) in a duplicate 9× 5× 2 factorial …

Grape marc (the skins, seeds, stalk, and stems remaining after grapes have been pressed to
make wine) is currently a by-product used as a feed supplement by the dairy and beef …

In vitro fermentation techniques (IVFT) have been widely used to evaluate the nutritive value
of feeds for ruminants and in the last decade to assess the effect of different nutritional …