background: high grain diets in ruminants increases the risk of digestives disorders such as acidosis which may lead to high economic loss. objectives: this experiment was conducted to determine the effects of an unsaturated and polyunsaturated fatty acid and monensin on gene expression of enzymes involved metabolic pathway of cell proliferation and rumen epithelial intracellular ph regulation....

We evaluated the effect of feed additives on the risk of ruminal acidosis in Holstein heifers (n = 40) fed starch and fructose in a challenge study. Heifers were randomly allocated to feed additive groups (n = 8 heifers/group): (1) control (no additives); (2) virginiamycin (VM); (3) monensin + tylosin (MT); (4) monensin + live yeast (MLY); and (5) sodium bicarbonate + magnesium oxide (BUF). Hei...

ABSTRACT Rumen acidosis is a fatal disease that reduces milk and pregnancy yield due to digestion of cattle when not detected. Diagnosis this can be achieved by monitoring the nutritional parameters cattle. Internet Things (IoT) technology used in these kinds processes such as tracking within scope Industry 4.0. Thanks IoT, data collection, analysis, processing stages are carried out instantly ...

Sub-acute ruminal acidosis (SARA) in dairy cattle is a disorder of fermentation caused by the ingestion large amounts concentrates with inadequate fibre. The condition characterized sustained and marked decrease rumen liquor pH ≤5.5 for at least three hours each day. Rumen buffers direct fed microbials (DFM) are dietary supplements that had been used management SARA. samples cows from organized...

Abstract The present study aimed to evaluate the effects of ruminal fluid pH on fatty acids (FA) profile bovine milk. experiment was performed 250 Polish Holstein-Friesian cows reared in 11 commercial high-yielding dairy farms. Ruminal samples were collected by rumenocentesis, and fat FA concentrations milk analyzed Fourier transform infrared spectroscopy. According pH, categorized into three g...

The molecular mechanisms underlying rumen epithelial adaption to high-grain (HG) diets are unknown. To gain insight into the metabolic mechanisms governing epithelial adaptation, mature nonlactating dairy cattle (n = 4) were transitioned from a high-forage diet (HF, 0% grain) to an HG diet (65% grain). After the cattle were fed the HG diet for 3 wk, they returned to the original HF diet, which ...

Eighty Holstein-Friesian cows were randomly assigned to four treatment groups of 20. The four groups of twenty cows were fed on diets that were designed to place cows at some degree of risk of ruminal and metabolic acidosis. The cows were fed either 10 kg of pellet and ate pasture, or a subgroup of six cows per group was fed 10 kg of pellet with ad lib forage in a Calan gate facility. Cows in G...

Intake and excretory patterns, N and mineral balance, rumen fluid characteristics and acid-base status were measured for 15 days in five nonfistulated and six rumen-fistulated wethers. The animals were placed in metabolism crates and fed alfalfa hay from day 1 through 5, a 65% concentrate diet from day 6 through 10 and an 85% concentration diet from days 11 through 15. All diets were pelleted a...

The origin of D-lactate, the most important acid contributing to metabolic acidosis in the diarrheic calf, is unknown. We hypothesized that because D-lactate is produced only by microbes, gastrointestinal fermentation is the source. The objective of this study was to determine whether D-lactate production occurs in the rumen, colon, or both, and to measure D- and L-lactate concentrations in uri...