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Showing 1 to 20 of 42 for “"Ruminal fermentation"”.
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Effect of roughage to concentrate ratio on ruminal fermentation and protein degradability in dairy cows
… out of the rumen, through manipulation of rumen fermentation to establish a lower rumen pH. To test this hypothesis, a study was conducted in which three ruminally cannulated Holstein cows, 722 kg ±25.6 kg fed three different diets (treatments) were used in a Latin square design experiment to …
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Intake, Digestibility, Insitu Disappearance and Ruminal Fermentation of Bermuda Grass Hay by Lactating Beef Cows Offered Corn or Hominy Feed as Supplements
… digestibility, in situ DM disappearance, and ruminal fermentation characteristics of medium quality bermudagrass hay. Five ruminally cannulated lactating beef cows (BW = 596 kg, SE = 13.9) were used in an experiment with a 5 × 5 Latin square design. Treatments were low hominy …
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Effects of source and amount of energy and protein on ruminal fermentation, nutrient passage to the small intestine, and performance of lactating Holstein cows
… were conducted using lactating cows fitted with ruminal and duodenal cannulae to investigate the effects of source and amount of energy and crude protein (CP) on nutrient flow to the duodenum. In each experiment, four Holstein cows were used in a 4 x 4 Latin square with treatments arranged in a 2 …
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The effects of creep feed duration in a drylot system on cow performance as well as calf performance, ruminal fermentation characteristics, and carcass traits
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms
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Integration of Ruminal Volatile Fatty Acid Production Methods, Ruminal Fluid Sampling Techniques, and Mathematical Modeling
… develop simpler methods of measuring the rate of ruminal volatile fatty acid (VFA) production and a practical but effective way of sampling ruminal fluid. In experiment 1, an in vitro technique (procedure and mathematical approach) were developed to estimate ruminal VFA production in vivo. This …
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Degradable intake protein supplementation through the inclusion of urea in finishing diets containing distillers grains: effects on feedlot cattle performance, ruminal fermentation, and feed digestibility
… that is potentially fermented in the rumen. Ruminal DIP balance is calculated by the difference between DIP supply and requirements. The former is a function of dry matter intake and dietary DIP, and represents nitrogen (N) available for synthesis of microbial crude protein (MCP), which is …
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Effect of exogenous enzymes on ruminal fermentation, pelletability and palatability of blueberry products in equine feed, and the effects of quantity of protein and starch on equine cecal environment
Enhancing ruminal fermentation of feed is an important consideration for producers of beef and dairy cattle. One method for enhancing fermentation of fiber is application of exogenous fibrolytic enzymes (EFE) to feed. To determine whether method used to apply EFE impacts fermentation parameters by …
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Impacts of diet inversion on voluntary intake, digesta and fecal composition, and bacterial community composition in rumen of cattle fed tropical forage-based diets
… of the diet inversion on voluntary intake, ruminal digesta and feces composition, ruminal fermentation, and bacterial community composition in cattle fed tropical forage-based diest and to establish the minimal length of the adaptation period that could be applied to changeover or crossover …
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Effect of the maturity at harvest of whole-crop barley and oat on dry matter intake, forage selection, and digestibility when fed to beef cattle
… barley and oat whole-crop forage on feed intake, ruminal fermentation and digestibility, and the impact forage allocation has on intake and ruminal fermentation. In the first 2 studies, whole-crop barley (Study 1; c.v. CDC Cowboy) and oat (Study 2; c.v. CDC Weaver) forage were harvested at the …
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Effects of treating lignocellulosics with alkaline hydrogen peroxide on feed intake and digestion by dairy cattle
… degradation of structural carbohydrates by ruminal microbes. Therefore, four experiments were conducted to investigate the effects of AHP-treated wheat straw (WS) or oat hulls (OH) on feed intake, nutrient digestion, ruminal fermentation, and production responses by dairy cattle.
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Effects of feeding increasing dietary concentrations of fat on the performance of lactating dairy cows
… (DM) without having deleterious effects on ruminal fermentation and nutrient utilization.
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Evaluating fish meal as a protein source for lactating dairy cows
… This decrease was not associated with changes in ruminal fermentation patterns. Plasma long-chain n-3 polyunsaturated fatty acids were increased with increased fishmeal intake. Mammary slices from lactating bovine mammary gland were incubated with eicosapentaenoic acid. Changes in ¹⁴C-acetate …
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Determination of Energy Efficiency of Beef Cows under Grazing Conditions Using a Mechanistic Model and the Evaluation of a Slow-Release Urea Product for Finishing Beef Cattle
… leaner. In typical feedlot diets, the rates of ruminal fermentation of highly processed grains and the hydrolysis rate of urea may not match. Asynchronous utilization of carbohydrate and protein would result in some portion of the urea unknot being utilized by the ruminal microbes and ultimately …
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EVALUATION OF A METHOD TO MEASURE VOLATILE FATTY ACIDS AND GASES IN VITRO WITH MATHEMATICAL MODELING
… estimate gas production and VFA profile in rumen fermentation would enable isolation of fermentation effects from various animal interactions. Therefore, the focus of this dissertation was to develop an in vitro method that will have the same VFA and gas profiles as in the rumen. The objectives of …
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Alteration of Milk Composition in Dairy Cows Fed Supplemental Fat
… experiment one, it was hypothesized that feeding ruminally protected methionine and lysine would alleviate this depression in milk protein. Feeding supplemental fat increased milk production and decreased milk protein percentage. Supplementing methionine and lysine to the diet diminished the …
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Intake, growth and rate of digesta passage in ruminating calves fed sodium bicarbonate and disodium phosphate
… and disodium phosphate on animal performance, ruminal fermentation, ration digestibility and rate of passage of liquid and particulate phases of digesta. Rations contained 0 to 4.5% sodium bicarbonate and 0 to 2.5% disodium phosphate.. Calves were randomly assigned to experimental rations, …
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Influence of Microbial Inoculants for Corn Silage on Fermentation Characteristics and Nutrient Composition in Vitro, and on Production Responses in Lactating Cows
… microbial inoculants for corn silage on fermentation and silage composition were evaluated in laboratory silos. Treatments were control and three microbiai inoculants: Nordica Corn Silage Inoculant, AgMaster Corn Silage Inoculant, and Pioneer Silage Inoculant. The Nordica treated silage …
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Use of Newly Developed Blended Feed Supplement on Rumen Parameters and Milk Fat in Dairy Cows
… to characterize the feed's chemical composition, ruminal fermentation, nutrient digestibility, protein-energy synchronization, and its impact on milk production and nitrogen utilization, with the aim of finding an alternative inexpensive supplement source for dairy cows instead of bypass fats and …
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The Effects of a Blend of Essential Oils on Rumen Efficiency of Lactating Dairy Cows
… and in vitro analysis of varying doses of SS on ruminal fermentation at different stages of lactation. The study consisted of two experiments, the in vivo Experiment 1, was conducted on a commercial robotic dairy in southwest Minnesota outfitted with two Lely Astronaut A4robotic milking units …
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