Meaghan Meyer
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View article: Sedation practices in out-of-hospital cardiac arrest: a Danish prospective cohort study.
Sedation practices in out-of-hospital cardiac arrest: a Danish prospective cohort study. Open
Background Sedation is commonly used following the intubation of resuscitated out-of-hospital cardiac arrest (OHCA). The sedatives employed have potent yet varying hemodynamic effects, which can complicate management during the fragile pos…
View article: Field report: Methods for assessing laser environmental enrichment application in commercial broilers
Field report: Methods for assessing laser environmental enrichment application in commercial broilers Open
SUMMARY: Sensory environmental enrichment aimed to induce active behavior is sparse in the literature and nonexistent in commercial broiler houses. Laser enrichment previously shown to be successful in stimulating broiler exercise while im…
View article: Increased duration of laser environmental enrichment increased broiler physical activity and pen-wide movement without altering tibia measurements
Increased duration of laser environmental enrichment increased broiler physical activity and pen-wide movement without altering tibia measurements Open
Inactivity and leg disorders negatively impact broiler welfare. Enrichment designed to increase barn complexity may encourage physical exercise. The study aim was to implement a second-generation laser enrichment device, previously shown t…
View article: Laser environmental enrichment and Spirulina algae moderately improve Ross 708 broiler performance without reducing welfare
Laser environmental enrichment and Spirulina algae moderately improve Ross 708 broiler performance without reducing welfare Open
Modern commercial broilersare genetically selected for increased growth rate, improved feed efficiency,and a significant proportion of breast muscle tissue. Reducing feed conversionrate and days to market weight are of key interest to the …
View article: Laser enrichment increased activity and pen-wide locomotion in Ross 708 broilers
Laser enrichment increased activity and pen-wide locomotion in Ross 708 broilers Open
Fast growth rate and geneticallydriven breast muscle yield in modern broilers have had unintended effects onanimal welfare resulting in increased inactivity and leg disorders. Thus, thecurrent research objectives were to implement a laser …
View article: Laser enrichment affects myogenic gene expression and breast muscle diameter in Ross 708 broilers
Laser enrichment affects myogenic gene expression and breast muscle diameter in Ross 708 broilers Open
Environmentalenrichment designed to stimulate activity may reduce the occurrence of the problematicbreast muscle myopathy, woody breast (WB). Successful tools to minimize thisdisease and resulting economic loss to the poultry industry have…
View article: Tracking and Characterizing Spatiotemporal and Three-Dimensional Locomotive Behaviors of Individual Broilers in the Three-Point Gait-Scoring System
Tracking and Characterizing Spatiotemporal and Three-Dimensional Locomotive Behaviors of Individual Broilers in the Three-Point Gait-Scoring System Open
Gait scoring is a useful measure for evaluating broiler production efficiency, welfare status, bone quality, and physiology. The research objective was to track and characterize spatiotemporal and three-dimensional locomotive behaviors of …
View article: Dietary inositol-stabilized arginine silicate numerically reduced woody breast severity in male Ross 708 broilers without altering growth
Dietary inositol-stabilized arginine silicate numerically reduced woody breast severity in male Ross 708 broilers without altering growth Open
The woody breast (WB) myopathy is an unintended outcome of fast broiler chicken growth and high breast muscle yields. Myodegeneration and fibrosis in the living tissue are results of hypoxia and oxidative stress driven by lack of blood sup…
View article: Undergraduate student attitudes to current poultry industry issues over four semesters: surveying an introductory poultry science course
Undergraduate student attitudes to current poultry industry issues over four semesters: surveying an introductory poultry science course Open
Individual background and demographics affect student perceptions of animal production. Understanding how science-based education alters these opinions is a critical aspect of improving university instruction as well as increasing consumer…
View article: Dietary vasodilator and vitamin C/L-arginine/choline blend improve broiler feed efficiency during finishing and reduce woody breast severity at 6 and 7 wks
Dietary vasodilator and vitamin C/L-arginine/choline blend improve broiler feed efficiency during finishing and reduce woody breast severity at 6 and 7 wks Open
Woody breast has become a considerable economic concern to the poultry industry. This myopathy presents rigid, pale breasts characterized by replacement of lean muscle protein with connective tissue, a result of hypoxia and oxidative stres…
View article: Mitochondrial and Glycolytic Capacity of Peripheral Blood Mononuclear Cells Isolated From Diverse Poultry Genetic Lines: Optimization and Assessment
Mitochondrial and Glycolytic Capacity of Peripheral Blood Mononuclear Cells Isolated From Diverse Poultry Genetic Lines: Optimization and Assessment Open
Cellular metabolic preference is a culmination of environment, nutrition, genetics, and individual variation in poultry. The Seahorse XFe24 analyzer was used to generate foundational immune cellular metabolic data in layer, broiler, and le…
View article: Laser Environmental Enrichment and Spirulina Algae Improve Broiler Growth Performance and Alter Myogenic Gene Expression and pectoralis major Dimensions
Laser Environmental Enrichment and Spirulina Algae Improve Broiler Growth Performance and Alter Myogenic Gene Expression and pectoralis major Dimensions Open
Sustainability in poultry production is evident in efforts to reduce inputs and a focus on bird welfare and livability. Dietary protein alternatives to traditional sources such as soybean meal aim to meet or exceed efficiency benchmarks an…
View article: Laser Enrichment Device Stimulates Broiler Laser-Following Behavior While Increasing Individual Bird Locomotion and Pen-Wide Movement
Laser Enrichment Device Stimulates Broiler Laser-Following Behavior While Increasing Individual Bird Locomotion and Pen-Wide Movement Open
Genetic selection for fast growth rate and high breast muscle yield in modern broilers has unintended effects on animal welfare and behavior, namely in terms of inactivity and leg disorders. We hypothesized that exercise stimulated through…
View article: Age and Staphylococcus aureus Inoculation Route Differentially Alter Metabolic Potential and Immune Cell Populations in Laying Hens
Age and Staphylococcus aureus Inoculation Route Differentially Alter Metabolic Potential and Immune Cell Populations in Laying Hens Open
In 2018 and 2019, Staphylococcus aureus was isolated from multiple post-molt commercial laying hens with unusually high mortality. A challenge study was conducted to elucidate the role of S. aureus in this disease outbreak and the work her…
View article: Dietary probiotics alter broiler intestinal permeability parameters but not performance
Dietary probiotics alter broiler intestinal permeability parameters but not performance Open
Since the Veterinary Feed Directive became effective in 2015, poultry producers have sought a replacement for antibiotics in commercial broiler diets to promote growth and gut health. A series of poultry feed additives including probiotics…
View article: Baseline Immune Cell Composition in Broiler Spleen is Altered by Probiotic Supplementation
Baseline Immune Cell Composition in Broiler Spleen is Altered by Probiotic Supplementation Open
Probiotics are supplemented in poultry diets to support beneficial intestinal microbial community members. The alteration of the microbiota due to probiotic supplementation is shown to improve host health, but the underlying changes to imm…
View article: Comparison of Naturally Occurring vs. Experimental Infection of Staphylococcus aureus Septicemia in Laying Hens in Two Different Age Groups
Comparison of Naturally Occurring vs. Experimental Infection of Staphylococcus aureus Septicemia in Laying Hens in Two Different Age Groups Open
In April and November of 2018, multiple commercial laying hen flocks within the same company presented with a sharp increase in mortality and drop in egg production that persisted for several days. These flocks showed striking necropsy les…
View article: Composition and inclusion of probiotics in broiler diets alter intestinal permeability and spleen immune cell profiles without negatively affecting performance1
Composition and inclusion of probiotics in broiler diets alter intestinal permeability and spleen immune cell profiles without negatively affecting performance1 Open
Probiotic feed additives with potential to enhance performance, health, and immunity have gained considerable popularity in commercial broiler production. The study objectives were to measure broiler performance, gut integrity, and splenic…
View article: A novel environmental enrichment device increased physical activity and walking distance in broilers
A novel environmental enrichment device increased physical activity and walking distance in broilers Open
Modern broilers are selected for fast growth and a large proportion of breast tissue, contributing to a top-heavy phenotype, leg disorders, and inactivity as birds reach market weight. Therefore, the objective was to motivate broilers to m…
View article: A novel environmental enrichment device improved broiler performance without sacrificing bird physiological or environmental quality measures
A novel environmental enrichment device improved broiler performance without sacrificing bird physiological or environmental quality measures Open
Modern commercial broilers have been genetically selected for fast growth and heavy breast muscling, contributing to a top-heavy phenotype and increased leg lameness. A quick-growing phenotype coupled with poor leg health fosters inactivit…
View article: PSVI-13 Responses of undergraduate students pre- and post-education on poultry industry and welfare issues
PSVI-13 Responses of undergraduate students pre- and post-education on poultry industry and welfare issues Open
Students enrolled in a poultry science course were surveyed at the start and end of the semester in the first part of a multi-year study to quantify the effect of science-based education on opinion of the poultry industry. Students marked …
View article: A novel environmental enrichment laser device stimulated broiler chicken active behavior and improved performance without sacrificing welfare outcomes
A novel environmental enrichment laser device stimulated broiler chicken active behavior and improved performance without sacrificing welfare outcomes Open
The modern commercial broiler chicken is a genetic hybrid selected for fast growth, feed efficiency, and a large proportion of breast muscle tissue. As birds reach market weight within a typical 6- week commercial cycle, they are increasin…
View article: Determining Presence of Yolk Sac and Intestinal Bacterial Colonization in Pre-hatch Chicken Embryos
Determining Presence of Yolk Sac and Intestinal Bacterial Colonization in Pre-hatch Chicken Embryos Open
Chicks hatch with a sterile gastrointestinal tract and receive the first colonization of intestinal bacteria from the shell and hatching environment. Bacteria may translocate from the shell to remaining yolk and/or the developing embryo pr…