Kevin K. Sedivec
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View article: Invasive grass litter controls rangeland plant community dynamics
Invasive grass litter controls rangeland plant community dynamics Open
Invasive species cause significant ecological impacts worldwide, affecting numerous ecosystems. In North America, changes to historic fire and grazing regimes have created an opportunity for the invasion of herbaceous plants, such as Kentu…
View article: 290 Impact of altering maternal gut microbiome via high-forage or high-concentrate diets on offspring microbiome development, methane emissions and animal performance in cattle.
290 Impact of altering maternal gut microbiome via high-forage or high-concentrate diets on offspring microbiome development, methane emissions and animal performance in cattle. Open
Maternal gut microbiome has been shown to influence immune, metabolic and neurodevelopmental programming of offspring from the embryonic stage, suggesting a potential role in the Developmental Origins of Health and Disease (DOHaD). Whereas…
View article: 143 Late-Breaking: Maternal vitamin and mineral supplementation modulate placental gene expression related to angiogenesis, nutrient transport, and immune regulation in neonatal beef heifers.
143 Late-Breaking: Maternal vitamin and mineral supplementation modulate placental gene expression related to angiogenesis, nutrient transport, and immune regulation in neonatal beef heifers. Open
The placenta plays a central role in fetal development by regulating nutrient transfer, hormone signaling, and cellular differentiation, ultimately influencing long-term offspring productivity. This study examined the effects of maternal v…
View article: 204 The vaginal and uterine microbiome of beef cattle that became pregnant or remained open following artificial insemination.
204 The vaginal and uterine microbiome of beef cattle that became pregnant or remained open following artificial insemination. Open
The bovine reproductive tract harbors a diverse microbiome that may influence pregnancy outcomes. Recently, we characterized the vaginal and uterine microbiota of virgin yearling heifers and cows at the time of artificial insemination (AI)…
View article: PSXI-27 Effects of managing mature beef bulls on divergent planes of nutrition on sperm transcriptome.
PSXI-27 Effects of managing mature beef bulls on divergent planes of nutrition on sperm transcriptome. Open
Though the effect of nutrition on testis development in young bulls has been explored, the molecular processes of the testis and sperm function in response to nutrition in mature bulls are still unknown. Thus, we investigated the effect of…
View article: 69 Late-Breaking: Maternal vitamin and mineral supplementation during gestation affects multi-tissue regulatory network in neonatal beef calves.
69 Late-Breaking: Maternal vitamin and mineral supplementation during gestation affects multi-tissue regulatory network in neonatal beef calves. Open
Vitamins and minerals are essential for regulating gene expression and physiological processes, particularly during gestation when maternal nutrient demands increase to support fetal development. We investigated how maternal mineral supple…
View article: PSVIII-24 Bacterial and fungal communities during ensiling and aerobic exposure of whole corn silage treated with a bacterial inoculant or a propionic acid-based additive.
PSVIII-24 Bacterial and fungal communities during ensiling and aerobic exposure of whole corn silage treated with a bacterial inoculant or a propionic acid-based additive. Open
This study investigated the effect of silage additives on a) silage composition and fermentation characteristics, and b) bacterial and fungal communities during ensiling and aerobic exposure. Whole plant corn was harvested at 33% DM and en…
View article: Maternal Vitamin and Mineral Supplementation Affected Neonatal Gene Expression and Rewired Key Regulatory Genes Underlying Hepatic Metabolism
Maternal Vitamin and Mineral Supplementation Affected Neonatal Gene Expression and Rewired Key Regulatory Genes Underlying Hepatic Metabolism Open
We investigated gene regulatory relationships in the neonatal liver to identify potential mechanisms by which maternal vitamin and mineral supplementation during gestation influences developmental programming in heifer calves. Liver transc…
View article: Fire Influences Patch Selection by Cattle More Strongly than Previous Grazing Events
Fire Influences Patch Selection by Cattle More Strongly than Previous Grazing Events Open
Understanding where animals graze and why they choose to graze there can be critical to rangeland and ecosystem management with misunderstandings of grazing distribution and behavior often being detrimental to management goals. Over time, …
View article: 103 Moderate body weight loss and one-carbon metabolite supplementation in pregnant beef heifers during early gestation alters maternal and fetal morphometrics
103 Moderate body weight loss and one-carbon metabolite supplementation in pregnant beef heifers during early gestation alters maternal and fetal morphometrics Open
The objective of this study was to determine if moderate changes in rate of body weight (BW) gain and dietary one-carbon metabolite (OCM) supplementation in pregnant heifers alters maternal and fetal morphometrics. In three experiments, An…
View article: 102 High-forage vs. high-concentrate diets fed to pregnant beef heifers: Impacts on maternal feeding behavior and feed efficiency, blood metabolite and hormone profiles in the dam and calf, and postnatal growth of the male offspring
102 High-forage vs. high-concentrate diets fed to pregnant beef heifers: Impacts on maternal feeding behavior and feed efficiency, blood metabolite and hormone profiles in the dam and calf, and postnatal growth of the male offspring Open
The objective of this study was to evaluate the impact of feeding gestating replacement heifers a high-concentrate (HC) diet or a high-forage (HF) diet from 15 days pre-breeding through calving on: feeding behavior and feed efficiency in t…
View article: PS-7 Vitamin and mineral supplementation to gestating F0 beef heifers and the multigenerational impacts on organ weights and circulating hormones and metabolites in the F1 Dam and F2 Fetus
PS-7 Vitamin and mineral supplementation to gestating F0 beef heifers and the multigenerational impacts on organ weights and circulating hormones and metabolites in the F1 Dam and F2 Fetus Open
This study assessed the impacts of providing a vitamin and mineral supplement to F0 beef heifers during gestation on organ weights, and hormone and metabolite concentrations in F1 offspring and F2 fetuses during pregnancy. Angus-crossbred …
View article: Evaluating Remote Sensing Resolutions and Machine Learning Methods for Biomass Yield Prediction in Northern Great Plains Pastures
Evaluating Remote Sensing Resolutions and Machine Learning Methods for Biomass Yield Prediction in Northern Great Plains Pastures Open
Predicting forage biomass yield is critical in managing livestock since it impacts livestock stocking rates, hay procurement, and livestock marketing strategies. Only a few biomass yield prediction studies on pasture and rangeland exist de…
View article: Early life programming of the neonatal bovine jejunum in response to maternal vitamin and mineral supplementation
Early life programming of the neonatal bovine jejunum in response to maternal vitamin and mineral supplementation Open
We investigated the effects of maternal vitamin and mineral supplementation throughout gestation on gene expression in the jejunal mucosa of neonatal calves. Crossbred Angus heifers ( n = 14) were estrus synchronized, bred to female-sexed …
View article: Effects of two different rates of body weight gain during the first trimester of pregnancy or supplementing vitamins and minerals throughout pregnancy on primiparous beef cow milk production and composition
Effects of two different rates of body weight gain during the first trimester of pregnancy or supplementing vitamins and minerals throughout pregnancy on primiparous beef cow milk production and composition Open
We evaluated the effects of nutrition during pregnancy in beef heifers on colostrum and milk production and composition. For Experiment 1, crossbred Angus heifers were randomly allocated to a low (0.28 kg/d, [LG], n = 23) or a moderate rat…
View article: Effects of Vitamin and Mineral Supplementation During Gestation in Beef Heifers on Immunoglobulin Concentrations in Colostrum and Immune Responses in Naturally and Artificially Reared Calves
Effects of Vitamin and Mineral Supplementation During Gestation in Beef Heifers on Immunoglobulin Concentrations in Colostrum and Immune Responses in Naturally and Artificially Reared Calves Open
Two experiments assessed the effects of providing a vitamin and mineral supplement to gestating beef heifers on concentrations of immunoglobulins (Ig) in colostrum and calf serum 24 h after feeding maternal colostrum (Exp. 1) or a colostru…
View article: Economic potential of field peas as an alternative to corn distillers dried grains with solubles in beef heifer growing diets
Economic potential of field peas as an alternative to corn distillers dried grains with solubles in beef heifer growing diets Open
View article: Grazing intensity alters network complexity and predator–prey relationships in the soil microbiome
Grazing intensity alters network complexity and predator–prey relationships in the soil microbiome Open
Grasslands are recognized as important reservoirs of soil biodiversity. Livestock grazing is implemented as a grassland management strategy to improve soil quality and enhance plant diversity. Soil microbial communities play a pivotal role…
View article: Assessing supplementing strategies for beef cattle in a bale grazing system using grass hay during variable winter conditions
Assessing supplementing strategies for beef cattle in a bale grazing system using grass hay during variable winter conditions Open
Introduction Beef cattle in the Northern Great Plains of the United States of America are normally kept in open dry lot pens in winter. Practices such as bale grazing, swath grazing, stockpiling, and corn residue grazing, can be used to ex…
View article: Fire and Grazing Reduce Invasive Grass Thatch in Rangelands
Fire and Grazing Reduce Invasive Grass Thatch in Rangelands Open
Rangelands globally are invaded by exotic species. In the northern Great Plains, Kentucky bluegrass (hereafter, “bluegrass”) invades rangelands by forming a thick thatch layer that alters water and nutrient cycling and prevents seed germin…
View article: Prescribed fire increases forage mineral content in grazed rangeland
Prescribed fire increases forage mineral content in grazed rangeland Open
Background Sustainable rangeland management balances production and conservation. While a broad literature describesthe conservation benefits of prescribed fire, benefits for livestock production have emerged more slowly. Mineral nutrition…
View article: PSIII-7 7&7 Synch improved pregnancy rates in beef cows experiencing estrus over 24 h before fixed-time insemination
PSIII-7 7&7 Synch improved pregnancy rates in beef cows experiencing estrus over 24 h before fixed-time insemination Open
Our objectives were to compare estrus response and pregnancy rates between two different estrus synchronization protocols and between cows that experienced estrus more than 24 h before appointment breeding and those that experienced estrus…
View article: 104 Effects of providing vitamin and mineral supplementation throughout gestation on subsequent F1 replacement heifer liver and muscle oxygen consumption and mitochondrial function throughout pregnancy
104 Effects of providing vitamin and mineral supplementation throughout gestation on subsequent F1 replacement heifer liver and muscle oxygen consumption and mitochondrial function throughout pregnancy Open
The study aimed to assess the impact of maternal vitamin/mineral supplementation during gestation on the energy utilization in liver and muscle tissues of F1 heifer offspring. We hypothesized that VTM supplementation during gestation would…
View article: PSV-3 Effects of maternal early gestational weight gain on multigenerational skeletal muscle gene regulation in offspring
PSV-3 Effects of maternal early gestational weight gain on multigenerational skeletal muscle gene regulation in offspring Open
Maternal nutrition during the periconceptional period may have multigenerational effects on the gene regulation of fetal skeletal muscle. This study aimed to investigate the impact of maternal rate of body weight gain (F0) during early ges…
View article: Evaluating Fecal DNA Metabarcoding to Estimate the Dietary Botanical Composition of Goats
Evaluating Fecal DNA Metabarcoding to Estimate the Dietary Botanical Composition of Goats Open
Improved techniques are needed to estimate the dietary species composition of grazing animals. The fecal DNA metabarcoding technique has been proposed as a noninvasive method to determine dietary species composition. However, studies sugge…
View article: Influence of Maternal Supplementation with Vitamins, Minerals, and (or) Protein/Energy on Placental Development and Angiogenic Factors in Beef Heifers during Pregnancy
Influence of Maternal Supplementation with Vitamins, Minerals, and (or) Protein/Energy on Placental Development and Angiogenic Factors in Beef Heifers during Pregnancy Open
The effect of vitamins and minerals supplementation (VTM) and/or two rates of body weight gain (GAIN) on bovine placental vascular development and angiogenic factors gene expression were evaluated in two experiments: In Exp. 1, crossbred A…
View article: Effects of rate of body weight gain during the first trimester of gestation on beef heifer and offspring performance, concentrations of hormones and metabolites, and response to vaccination
Effects of rate of body weight gain during the first trimester of gestation on beef heifer and offspring performance, concentrations of hormones and metabolites, and response to vaccination Open
Our study objectives were to evaluate the effects of divergent rates of body weight (BW) gain during early gestation in beef heifers on F0 performance, metabolic and endocrine status, colostrum immunoglobulins, and subsequent F1 calf chara…
View article: Supplementing vitamins and minerals to beef heifers during gestation: impacts on mineral status in the dam and offspring, and growth and physiological responses of female offspring from birth to puberty
Supplementing vitamins and minerals to beef heifers during gestation: impacts on mineral status in the dam and offspring, and growth and physiological responses of female offspring from birth to puberty Open
We evaluated the effects of feeding a vitamin and mineral supplement to nulliparous beef heifers throughout gestation on the mineral status of the dam, calf, placenta, and colostrum; offspring growth performance; and physiological response…
View article: PSXIV-30 Effects of Vitamin/Mineral Supplementation During Gestation in Beef Heifers on Immunoglobulin Concentrations in Colostrum and Immune Responses in Naturally and Artificially Reared Calves
PSXIV-30 Effects of Vitamin/Mineral Supplementation During Gestation in Beef Heifers on Immunoglobulin Concentrations in Colostrum and Immune Responses in Naturally and Artificially Reared Calves Open
Two experiments were conducted to evaluate the impacts of feeding a vitamin/mineral supplement to beef heifers throughout gestation on concentrations of immunoglobulin (Ig) in colostrum and in calf serum 24 h after consumption of maternal …
View article: Sequencing and culture-based characterization of the vaginal and uterine microbiota in beef cattle that became pregnant or remained open following artificial insemination
Sequencing and culture-based characterization of the vaginal and uterine microbiota in beef cattle that became pregnant or remained open following artificial insemination Open
In this study, we evaluated the vaginal and uterine microbiota between beef cattle that became pregnant via artificial insemination (AI) and those that remained open to identify microbial signatures associated with fertility. We also chara…