The objective of this study was to determine how duration of time that cattle are fed a high-grain diet affects feed sorting, both before and after an episode of acute ruminal acidosis. Sixteen Angus heifers (261 ± 6.1 kg; BW ± SEM) were assigned to 1 of 4 blocks and fed a backgrounding (BG) diet (60% forage, DM basis). Within block, heifers were randomly assigned to 1 of 2 treatments differing...

four in vitro experiments (exp.) were conducted to evaluate lavender essential oil (leo) effects at 0 (control), 250 (low dose), 500 (medium dose), 750 and 1000 µl per l(high doses) of incubation medium on rumen gas production kinetics (exp.1), ruminal digestibility and fermentation (exp.2), methane production (exp.3) and rumen acidosis (exp.4). the asymptote of gas production (a) increased qua...

ABSTRACT This study aims to determine the relationship between indicators of motor activity, pH factor, rumen and rectal temperature within 10 days after calving analyze possibility using studied parameters as prognostic signs for diagnosing sub-acute acidosis (SARA). The measurements were taken bolus with sensors designed monitor cow health. factor ruminal cows measured during at a measurement...

Four ruminal cannulated Texel wethers were used to study the long-term effects of an acidotic diet on ruminal parameters and blood acid-base status. The short-term events around feeding and the recovery of the animals were followed after this nutritional disturbance. Sheep were limit-fed consecutively a control diet H (100% hay) (one week), an acidotic diet W (60% wheat + 40% hay) (2 weeks), an...

The objectives of this study were to induce hindgut and metabolic acidosis via abomasal infusion corn starch β-hydroxybutyrate (BHB), respectively, determine the effects these physiological states in early-lactation dairy cows. In a 6 × Latin square design, rumen-fistulated Holstein-Friesian cows (66 ± 18 d milk) subjected 5 continuous treatments followed by 2 rest. 3 factorial with levels BHB....

The aim of this study was to the molecular mechanisms metabolic disorders that develop in highly productive cows. It found blood serum animals with subclinical ketosis (SCK), which are eighth month pregnancy, concentration β-hydroxybutyrate is increased, content iron, calcium and phosphorus reduced, its iron-binding capacity against background absence phenomena hepatocellular insufficiency, vio...

This study investigated the effects of acarbose addition on changes in ruminal fermentation characteristics and the composition of the ruminal bacterial community in vitro using batch cultures. Rumen fluid was collected from the rumens of three cannulated Holstein cattle fed forage ad libitum that was supplemented with 6 kg of concentrate. The batch cultures consisted of 8 mL of strained rumen ...