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Showing 1 to 13 of 13 for “"Rumen Microbiome"”.
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Comparative Gene-Centric Metagenomics of the Rumen Microbiome
The complex microbiome of the rumen functions as an exceptionally effective system for the conversion of plant cell wall biomass to microbial protein, short chain fatty acids, and gases including hydrogen and methane. As such, it provides a unique genetic resource for plant cell wall degrading …
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Evaluating the effect of dietary changes and management strategies to feedlot cattle during the adaptation and finishing phase on performance, carcass characteristics and the rumen microbiome
… to allow the microbial community in the rumen to adjust from forage-based diets to high starch diets. These adaptation diets have greater inclusions of forages and are usually managed by a series of step-up diets. Once cattle are consuming the finishing diet, different processing methods …
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Comparative genomic approaches for investigating evolution in the microbial and viral populations of the rumen
The rumen is home to a diverse population of microorganisms encompassing all three domains of life: Bacteria, Archaea, and Eukarya. Viruses have also been documented to be present in large numbers; however, little is currently known about their role in the dynamics of the rumen ecosystem. This …
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Transcriptomic and metagenomic impacts of dietary energy of milk replacer in pre-weaned Holstein heifers
… heifers impacts the microbial profile of the rumen as well as the transcriptome in tissues related to growth and metabolism. Our hypothesis was that pre-weaned Holstein heifers on milk replacer diets with lower dietary energy will have a different rumen microbiome composition and a different …
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Microbiome Metabolism in the Rumen of Bovine Grazing Toxic Tall Fescue and in Stored Dairy Manure
… In our first system, we characterized the rumen microbiomes of beef cattle alternately grazing nontoxic MaxQ and toxic KY-31 tall fescue pasture, to understand how these cultivars shape the rumen microbiome and identify microbial species potentially capable of degrading ergot alkaloids for …
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Improving the Understanding of Factors Driving Rumen Fermentation
… products. Volatile fatty acids (VFA) produced by rumen microbial fermentation of feed substrates represent around 70% of the ruminant animal's metabolic energy supply. Rumen fermentation profiles may directly impact productivity because the types of VFA produced are utilized at differing …
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Determining the added value of coproducts based adaptation diets and the heritability of variation in feed intake in Red Angus cattle
… of steps. This strategy allows time for the rumen epithelium and microbiome to adjust to high grain diets. Although grains are typically fed as the main energy source in a diet, grain coproducts also contain a great amount of easily digested fiber, which can decrease the risk for metabolic …
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Investigating the effects of direct-fed microbials on beef cattle during an acidosis challenge
… microorganisms that can be used to improve rumen fermentation and alleviate nutritional disorders. The objective of this study was to investigate the effect of two DFM dosing strategies on beef cattle during an acidosis challenge model. Eighteen ruminally cannulated steers (BW = 328 ± 20 kg) …
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Influence of nutrition on the muscle transcriptome and ruminal microbiome in cattle
… Several of these factors include the ruminal microbiome composition and epithelial tissue function, and nutrient provision in utero. The objective of this dissertation was to evaluate the effects of nutrition on these physiological effects to determine their potential to influence nutrient …
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Genetic and Maternal Factors Underlying Early Milk Production and Their Influence on Calf Health
… had on early milk composition, and on the rumen microbiome of calves. We hypothesized that mode of birth would impact early milk composition, and, in turn, influence the microbial phyla in the calf gut. The second study had three objectives: 1) establish phenotypic relationships between …
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Effects of autolyzed yeast (saccharomyces cerevisiae) on feed degradability and digestibility; performance, rumen environment, and physiological biomarkers of Holstein cows fed a high starch diet
… autolyzed yeast product (Levabon® Rumen E, BIOMIN Holding GmbH, Austria) in HS diets on lactation performance, rumen environment parameters, inflammatory markers, opportunity to improve N utilization, nutrient bioavailability, apparent digestibility, and in situ degradability, gene …
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Further elucidating the effects of ruminal and hindgut acidosis on the ruminant animal
… the impact of a bout of ruminal acidosis on rumen fermentation, rumen microbiome, and energy metabolism of cattle unadapted to a concentrate-based diet. Eleven ruminally cannulated steers (body weight = 352 kg ± 27) were blocked into 3 groups based on initial body weight. Prior to the start …
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Toward the augmentation of rumen fermentation: Deciphering microbial dynamics
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-12-04 without embargo terms