An experiment was designed to investigate whether the degree of synchrony between the rates of digestion of carbohydrates and N of foods offered as a choice would have an effect, through their consequences, on the short- and long-term diet selection of sheep. Four foods (RL, RH, SL and SH) with the same high metabolizable energy, and similar high metabolizable protein contents were made into pe...

The objective of this study was to determine the effect of feeding direct-fed microbial (DFM) products containing Lactobacillus acidophilus and Propionibacteria freudenreichii on the performance, nutrient digestibility, and rumen fermentation of Holstein dairy cows in midlactation. Experiments were conducted from February to May 2003. Cows were fed 1 of 3 dietary treatments: 1) 1 x 10(9) colony...

Abstract Although individual studies on the milk component responses to diet and rumen fermentation parameters, notably pH, have identified relationships, these not been widely summarized. Therefore, a meta-analysis was conducted with objective of evaluating how fat protein percentage change in response (D), parameters (R) combination both (R+D) variables. A secondary evaluate models differed w...

We describe a model to calculate the buffering capacity of bicarbonate in the rumen. The addition of NaHCO3 results in the release of CO2 from solution and eventually from the rumen via eructation. This process directly neutralizes ruminal acidity. The degree to which the process continues depends on the partial pressure of CO2 in the gas phase, the pH, and a constant (7.74), according to the H...

The effects of rumen buffer agents on ruminal fermentation parameters and bacterial community composition were determined using in vitro vivo experiments three rumen-cannulated, high-concentrate fed Holstein Friesian dairy cows. Experiment 1 treatments included bentonite, calcium carbonate, oxide, sodium bicarbonate, sesquicarbonate, processed coral, unbuffered samples served as the control. 2 ...

Historically, Bifidobacterium species were reported as abundant in the breastfed infant gut. However, recent studies in resource-rich countries show an increased abundance of taxa regarded as signatures of dysbiosis. It is unclear whether these differences are the product of genetics, geographic factors, or interventions such as formula feeding, antibiotics, and caesarean section. Fecal pH is s...

CONTEXT The ingestion of gluten is responsible for the symptoms of Celiac disease, but other environmental factors can also influence. Strains of the Bifidobacterium genus have been shown to afford protection against the inflammatory response and mucosal damage caused by gliadin peptides in vitro. OBJECTIVES This study was designed to compare the concentration of fecal bifidobacteria and pH o...

I. The effects of processing cereals on aspects of rumen metabolism, physiology and pathology were investigated in five experiments with lambs. Three experiments studied the effects of diets containing loose whole, pelleted whole or pelleted rolled barley on rumen volatile fatty acid ratios, rumen pH and digestibility. In a 4th experiment the effects, on the same measurements, of pelleting whol...