The objective of this study was to evaluate the in vitro effects of flavonoid-rich plant extracts (PE) on ruminal fermentation characteristics and methane emission by studying their effectiveness for methanogenesis in the rumen. A fistulated Holstein cow was used as a donor of rumen fluid. The PE (Punica granatum, Betula schmidtii, Ginkgo biloba, Camellia japonica, and Cudrania tricuspidata) kn...

It is well known that rumen fermentation processes play a key role in ruminant nutrition, as it is this distinctive symbiotic feature between the host and the rumen microflora that lends the ruminant animal several advantages in digestive and metabolic processes over non-ruminants. The extent of complexity of interactions between diverse groups of microorganisms which inhabit the rumen is such ...

An isotope dilution method using [U-(13)C]glucose and [1-(13)C]leucine (Leu) was conducted to evaluate the effects of rice straw supplemented with urea and molasses (RSUM-diet) on plasma glucose and Leu turnover rates in sheep. Nitrogen (N) balance, rumen fermentation characteristics and blood metabolite concentrations were also determined. Four sheep were fed either mixed hay (MH-diet), or a R...

Hydrogen is a central metabolite in rumen fermentation and its partial pressure is an important determinant of rumen methanogenesis. The balance of hydrogen ion (H+) and dissolved hydrogen gas (H2) concentrations directly determine the redox potential of the rumen and therefore the possible extent of oxidation of feedstuffs. Differential permeability of the bacterial membrane to H+ and H2 means...

The importance of microorganisms to the mixed activities could be obtained. For this ruminant has interested an increasing number of reason, and because the pure culture approach nutritionists, particularly those in departments is time consuming, methods for studying the of animal science. In view of this interest of natural mixture have been developed. The inagricultural workers, it is surpris...

The effect of silage additives on ensiling characteristics and nutritive value of Napier grass (Pennisetum purpureum) silages was studied. Napier grass silages were made with no additive, fermented juice of epiphytic lactic acid bacteria (FJLB), molasses or cassava meal. The ensiling characteristics were determined by ensiling Napier grass silages in airtight plastic pouches for 2, 4, 7, 14, 21...

the aim of this research was to study the in vitro effect of lavandula officinalis (leo) and origanum vulgare (oeo) essential oils on rumen fermentation using a concentrate type substrate (cts) and roughage type substrate (rts). six mehraban ewes were divided into 2 groups and fed a concentrate type or roughage type diet, and used as rumen fluid donors. each essential oil (eo) was evaluated sep...

The rumen is an open fermentation chamber, inhabited by microorganisms that anaerobically digest complex components of feedstuffs and generate fermentation products (mainly acids) and microbial cell mass for utilization by the host. The absorption of fermentation products, mainly VFA, from the rumen into the blood, and outflow of microbial cells to the abomasum and small intestine provide the a...