Life Sciences Commons^™

Surface And Intradermal Temperature Responses Of Adults To Ambient Heat Stress With And Without Cooling, Zachary J. Mckenna, Elizabeth A. Gideon, Erin Harper, Taysom E. Wallace, Isa A. Farooqi, Craig G. Crandall

Health, Human Performance and Recreation Faculty Publications and Presentations

Accurate measurement of skin temperature is crucial to understanding responses to heat. We tested the hypothesis that intradermal temperature would differ from skin surface temperature during ambient heating with and without fan and water spray (24 degrees C). Nine healthy adults rested in an environmental chamber maintained at 40 degrees C and 15% relative humidity with and without fan, fan + water spray, and water spray. We assessed temperature in the dermal space (intradermal) and on the skin surface (surface) using thermocouple microprobes. In addition, we measured skin temperature using a standard uninsulated thermocouple taped to the skin (standard). During …

Zn Glycine Mitigates The Lps-Induced Hepatic Injury And Inflammation Through Nrf2/Nfκb Signaling In Geese, Zeshan Zulfiqar, Muhammad Arslan Asif, Layla Al-Mitib, Khawla Alharbi, Tanzina Hossain, Han Yao, Xiaoyan Zhu, Zhichang Wang, Hao Sun, Yalei Cui, Yinghua Shi

Biological Sciences Faculty Publications and Presentations

Gram-negative bacteria like Escherichia coli have an outer membrane that contains lipopolysaccharide (LPS), which is a powerful inducer of systemic inflammation. It is often associated with gut dysbiosis, intestinal barrier dysfunction, and liver damage. Despite increasing recognition of the gut-liver axis as a critical mediator in systemic inflammation and hepatic pathology, the efficacy of nutritional strategies targeting this pathway remains inadequately defined. This study evaluated the protective effects of zinc glycine (Zn_Gly), a highly bioavailable organic zinc chelate, against LPS-induced gut barrier disruption and liver damage in meat geese. Zn_Gly supplementation @ 80mg/kg of diet significantly attenuated LPS-induced impairments in …

Recycling Waste Via Insect Agriculture: Frass Impacts On Soil And Plant Health, Helen C.S. Amorim, Amanda J. Ashworth, Thomas F. Ducey, Valerie B. Brewer-Gunsaulis, Gerson L. Drescher, Philip R. Owens, Alana H. Patterson, Giovanna De Blais, Iris Van Straaten

Crop, Soil and Environmental Sciences Faculty Publications and Presentations

Frass-the main by-product of insect rearing for animal feed-is emerging as a promising soil amendment and plant growth promoter. However, basic agronomic information is lacking and prevents frass' widespread use as a biofertilizer. This study assessed impacts of black soldier fly (Hermetia illucens L. [Diptera: Stratiomyidae]) frass on soil fertility, crop growth, and quality compared to poultry litter (PL). Irrigated and non-irrigated soybean (Glycine max L. Merr.) and non-irrigated switchgrass (Panicum virgatum L.) plots received either PL (5.6 Mg ha(-1)), low frass rate (LF; 5.6 Mg ha(-1)), high frass rate (HF; 11.2 Mg ha(-1)), besides the unamended control (CT). In …

Biosecurity Investment Impacts On Highly Pathogenic Avian Influenza Control In United States Commercial Turkey Operations, Jada M. Thompson, Kelly Patyk, Victoria Fields, Matthew Branan, Amy Delgado, Kylie Roesler

Agricultural Economics and Agribusiness Faculty Publications and Presentations

Highly pathogenic avian influenza (HPAI) is an extremely transmissible virus that poses a significant threat to the U.S. turkey industry through contagion from migratory birds and results in whole-farm depopulation. To combat the disastrous economic impacts of HPAI, this study examined how biosecurity investments may have economic benefits to producers and the industry. Using data collected from a farm-focused survey of commercial turkey producers, the differences in biosecurity practices between farms affected by HPAI and unaffected farms in 2022 were analyzed. This evaluation aims to understand how effective biosecurity investments were towards reducing the susceptibility of a turkey farm to …

Muffled Olfactory And Sensory Cues From The Reproductive Stage Soybean Selectively Reduce Oviposition Of A Major Polyphagous Herbivore, Fall Armyworm (Spodoptera Frugiperda), Krishnarao Gandham, Manish Gautam, Justin George, Gadi V.P. Reddy, Rupesh Kariyat

Entomology and Plant Pathology Faculty Publications and Presentations

BACKGROUND

While the mother knows best/preference performance hypothesis has been well tested in natural ecosystems, how these ecological principles differ in agroecosystems is less explored. In this study, we investigated the ovipositional preference and offspring performance of fall armyworm (FAW) across vegetative and reproductive stages of soybean.

RESULTS

We examined trichomes, volatile organic compounds (VOCs) and assessed electroantennogram (EAG) measurements to understand how olfactory responses are affected by volatiles at different phenological stages during photoperiodism (photophase and scotophase). We found that gravid FAW preferred the vegetative compared to reproductive stage of soybean. Although VOC and EAG responses was not statistically …

Developing Hydrophobic-Hydrophilic Protein Structures By 3d Food Printing Of Sorghum And Soy Protein Gels, Sorour Barekat, Ali Ubeyitogullari

Food Science Faculty Publications and Presentations

The goal of this study was to introduce the simultaneous use of hydrophobic-hydrophilic proteins bioinks for 3D food printing. Sorghum protein gel (SPG) at 25 % w/w and soy protein isolate gel (SPIG) at 11 % w/w were loaded into separate extruders. The effects of the first printed layer (SPG or SPIG), printing speed (10, 20 mm/s), and nozzle size (0.52, 0.64, 0.72 mm) on printability were evaluated. The textural properties, rheological characteristics, microstructure, crystallinities, and functional groups of the proteins were analyzed. Printing sorghum and soy proteins together helped balance essential amino acids, where lysine (94.7 %) and histidine …

Distribution Of Plant-Parasitic Nematodes In Missouri And Arkansas, Usa, Vineyards, Andrew L. Thomas, Robert T. Robbins, R. Andrew Allen, Terry Kirkpatrick, Elijah A. Bergmeier

Entomology and Plant Pathology Faculty Publications and Presentations

A nematode survey was conducted from 30 vineyards in Missouri and Arkansas (USA) comprising 107 samples among 21 grape cultivars (Vitis aestivalis, Vitis labruscana, Vitis vinifera, Vitis hybrids, and Muscadinia rotundifolia). All the samples tested positive for nematode presence. Eleven different nematode taxa were isolated and identified, five of which have economic importance to grapevines: Xiphinema americanum, Meloidogyne spp., Pratylenchus spp., Criconemoides spp., and Tylenchulus spp. Xiphinema americanum was detected at all but two sites, with 58% of sites having populations at or above levels with expected biological and economic impact. This is primarily a concern because of the ability …

Comparison Of Relative Calcium Bioavailability Based On Bone Ash And Apparent Ileal Ca Digestibility In Broiler Chickens, R. L. Drysdale, B. W. Parsons

Poultry Science Faculty Publications and Presentations

Two experiments were conducted to determine relative Ca bioavailability based on bone ash and apparent ileal digestibility (AID) of Ca in reagent-grade calcium carbonate (RCaCO3) and RCaCO3 + phytic acid in commercial broiler chickens. In Experiment 1, relative Ca bioavailability of RCaCO3 and RCaCO3 + phytic acid was determined in ad libitum-fed broiler chickens using the slope-ratio method. Dietary treatments were corn-soybean meal-based diets. Diet 1 was Ca-deficient (0.30 % Ca; 0.45 % non-phytate P), while diets 2 through 5 were the same as diet 1, except that 2 increasing levels of RCaCO3 or RCaCO3 + phytic acid were added …

Use Of Growing Degree Days To Model The Dynamics Of Aboveground Biomass And Nitrogen Accumulation Of Winter Cover Crops, M. Pessotto, Trenton Roberts, C. Dos Santos, K. A. Hoegenauer, M. Bertucci, W. J. Ross, M. Savin

Crop, Soil and Environmental Sciences Faculty Publications and Presentations

Cover cropping is an important management practice that can benefit the cash crop and the environment. Plant species, weather, and cover crop termination influence biomass production and N fixation potential. This study was conducted to determine optimal termination dates for production systems in Arkansas based on growing degree days (GDD) for eight different cover crop species: Austrian winter pea (AWP) (Pisum sativum), balansa clover (Trifolium michelianum), barley (Hordeum vulgare), black-seeded oats (Avena sativa), common vetch (Vicia sativa var. Cahaba), cereal rye (Secale cereale), crimson clover (Trifolium incarnatum), and hairy vetch (Vicia villosa). Field studies were conducted at three research stations …

Fluridone Use In Furrow-Irrigated Rice: Palmer Amaranth Control And Crop Response, Maria Carolina Souza, Jason K. Norsworthy, Pamela Carvalho-Moore, Amar S. Godar, Samuel B. Fernandes, Trenton L. Roberts, Thomas R. Butts

Crop, Soil and Environmental Sciences Faculty Publications and Presentations

Rice cultivated under furrow irrigation faces weed management challenges due to the aerobic conditions that favor the emergence of terrestrial weeds such as Palmer amaranth. Fluridone was recently registered for use in rice production, offering an alternative site of action for Palmer amaranth control. Four site-years of field experiments were conducted in 2022 and 2023 in furrow-irrigated rice to assess Palmer amaranth control and crop tolerance to fluridone applied preemergence alone or with various postemergence treatments. The experiment was a randomized complete block design with a split-plot arrangement and four replications. The whole-plot factor was the postemergence treatment, while the …

Research Progress On The Effect Of Grafting Technology On Disease Resistance And Stress Resistance Of Watermelon, Xuena Liu, Shikai La, Chang Chen, Ainong Shi, Mingjiao Wang, Yingying Zhang, Jinghuai Guo, Lingdi Dong

Horticulture Faculty Publications and Presentations

Grafting is an effective horticultural technique that significantly enhances disease resistance and stress tolerance in watermelon. This review systematically summarizes the types of rootstocks used in watermelon grafting and analyzes the effects of grafting on plant responses to biotic stresses, such as viral and fungal pathogens, root-knot nematodes infections, and abiotic stresses, including drought, temperature extremes, and salinity. Furthermore, it discusses the changes in fruit quality and explores the underlying mechanisms associated with graft-induced resistance. By synthesizing recent research advances, this review aims to offer valuable insights and practical references for improving resistance and promoting sustainable production in cucurbit and …

Satellite Remote Sensing Reveals Voluntary Cover-Crop Adoption And Crop-Rotation Hotspots In The Mississippi Alluvial Plain, Zobaer Ahmed, Connor Lawson, Kris R. Brye, V. Steven Green, Mike Popp, Aaron Shew, Lawton Nalley

Agricultural Economics and Agribusiness Faculty Publications and Presentations

Government-subsidized programs like the Environmental Quality Incentives Program and the Conservation Stewardship Program provide financial motivation for adopting cover crops. Nevertheless, many producers have internalized the holistic benefits of cover crops and voluntarily adopted them as a sustainable soil management practice. Yet, little is known about how cover crop adoption propagates beyond the first order link between financial incentives and total adopted cover crop acres. This study examined voluntary adoption of winter cover crops as well as which crop rotations had the highest cover crop use in the Mississippi Alluvial Plain (MAP) region. Cover crop locations were identified using remote …

Robust Regression Rescues Poor Phylogenetic Decisions, Mataya Duncan, Michael Degiorgio, Raquel Assis, Richard Adams

Entomology and Plant Pathology Faculty Publications and Presentations

Comparative biology seeks to unlock the power of cross-species trait variation to learn the rules of life. In this venture, modern studies increasingly leverage large datasets spanning many traits and levels of biological organization and complexity. To analyze these complex data in a statistically-sound manner, researchers must choose a phylogeny that is assumed to model the mean trait values across species-an assumption that may be tenuous depending on the true evolutionary architecture of the traits. Yet the consequences of this decision remain poorly understood, particularly for modern studies seeking to analyze multiple, distinct traits within the same framework. Here, we …

Optimizing Conditions For Bacillus Subtilis Ectopic Gene Expression And Delivery Via Seed Treatment, Abeer Alnasrawi, Jiamel Li, Payal Sanadhya, J. Alejandro Rojas, Fiona L. Goggins

Entomology and Plant Pathology Faculty Publications and Presentations

Bacillus subtilis is applied as a biofertilizer, biocontrol agent, and probiotic in agriculture, and is also used for industrial synthesis of proteins and peptides. These applications can be combined by using B. subtilis to synthesize plant health-promoting peptides in culture or to deliver them to roots via seed treatments. To facilitate the use of B. subtilis as a cell factory, we tested different media, temperatures, and growth phases to optimize ectopic expression of a Plant Elicitor Peptide from soybean (GmPEP3) that enhances seedling growth. Our results indicate that temperature, culture media, and growth phase have interactive effects, and that 30 …

Limb Regeneration In Damselflies Based On Developmental Stage, Haven O. Clements

Inquiry: The University of Arkansas Undergraduate Research Journal

Injury is common in wild animals, yet some species possess an adaptive advantage: regeneration. Enallagma vesperum, a species of damselfly, exhibits this regenerative ability, though its persistence and effectiveness across developmental stages remain poorly understood. While previous studies indicate that regeneration ceases following adult emergence, it is unclear whether this ability also diminishes prior to the final larval molt. This study investigated the effectiveness of limb regeneration in E. vesperum across early and late larval instars. I hypothesized that earlier instars would exhibit greater regenerative success due to fewer competing energetic demands compared to later instars, which may prioritize …

Ferrihydrite Level In Paddy Soil Affects Inorganic Arsenic Species In Rice Grains, Arindam Malakar, Daniel D. Snow, Michael Kaiser, Harkamal Walia, Trenton L. Roberts, Chittaranjan Ray

Crop, Soil and Environmental Sciences Faculty Publications and Presentations

Rice is consumed by similar to 50% of the global population, grown primarily in flooded paddy fields, and is susceptible to arsenic accumulation. Inorganic arsenic, particularly in reduced form (As(iii)), is considered the most toxic and is more likely to accumulate in rice grains under flooded systems. We postulate that increased levels of highly reactive iron minerals, such as ferrihydrite, in paddy soils can regulate the bioavailability of arsenic and reduce its uptake by priming iron plaque formation. To clarify, two rice varieties, Norin and Sabharaj, differing in arsenic uptake rate, were grown in paddy soil under flooded conditions with …

Geogenie: A Deep Learning Approach To Predict Geographic Provenance Of Biodiversity Samples From Genomic Snps, Bradley T. Martin, Zachery D. Zbinden, Michael E. Douglas, Marlis R. Douglas, Tyler K. Chafin

Biological Sciences Faculty Publications and Presentations

Motivation

Determining geographic origin of samples is a common objective in wildlife management, forensics, and conservation. Current methods often assume evolutionary models or require extensive reference datasets, which are costly and difficult to develop, that perform poorly with uneven or biased sampling. Supervised deep learning offers a promising alternative by learning complex patterns without prior model specifications. Combined with novel geo-genetic data augmentation and preprocessing techniques, it can reduce reference panel demands and improve performance across diverse sampling schemes, broadening accurate provenance determination to more study systems. Results

We present GeoGenIE, an open-source software package powered by PyTorch for geographic …

Transcriptomic Analysis Demonstrates Moderators Of Muscle Quality Are Altered In Age-Related Sarcopenic Obesity, Eleanor R. Schrems, Ana Regina Cabrera, Ronald G. Jones Iii, Francielly Morena, Kevin A. Murach, Nicholas P. Greene, Tyrone A. Washington

Health, Human Performance and Recreation Faculty Publications and Presentations

BackgroundSarcopenic obesity (SO) is the combined condition of sarcopenia and obesity, which commonly occurs in the older adult population. SO is associated with poor physical function, increased risk of musculoskeletal injury, and reduced quality of life and independence. Information on the molecular underpinnings of this condition is limited. The aim of this study was to provide a transcriptomic analysis characterizing SO induced by lifelong obesity and to provide a deeper understanding of the etiology of the condition.ResultsYoung (Y) (6 mo) and aged (A) (21-24 mo) mice were fed either normal chow (L) (12% kcal from fat) or high-fat (O) (60% …

A Novel Turmeric Drying Approach Based On Supercritical Carbon Dioxide, Sumanjot Kaur, Arda Tuhanioglu, Ali Ubeyitogullari

Food Science Faculty Publications and Presentations

As a widely used spice, turmeric is rich in curcuminoids, which are known for their anti-inflammatory and antioxidant properties. However, the drying process, especially at high temperatures, often leads to significant curcumin degradation, impacting its bioactivity and quality. This study investigates drying turmeric using an innovative approach based on supercritical carbon dioxide (SC-CO2), and conventional drying methods (oven drying and freeze-drying) in terms of curcuminoid retention, color, solubility, chemical interactions, crystallinity, and morphology. The results revealed that SC-CO2 drying preserved up to 82.3 mu g curcuminoids /mg dried turmeric, which was significantly higher than the levels retained by oven drying …

Economic And Policy Drivers Of Climate-Smart Soil Health Practices In The United States, Roderick Rejesus, Serkan Aglasan, Lawson Connor

Agricultural Economics and Agribusiness Faculty Publications and Presentations

Climate-smart soil health practices, such as cover crops and no-till, are considered to be key elements for climate change adaptation and mitigation in agriculture. We examine the empirical literature that provides data-driven evidence on the impact of cover crops and no-till on several economic variables of interest, such as yields, inputs, profits, risk, erosion, and water quality. In general, existing studies provide mixed evidence on the impacts of cover crops and no-till on these outcomes. Moreover, we discuss the empirical literature exploring the impact of economic and policy-related variables on adopting cover crops and no-till. We find that a number …

Impact Of Irrigation And Micronutrient Treatments On Insect Herbivore Population Dynamics In Soybean, Rahul Debnath, Justin George, Ammar B. Bhandari, Rupesh Kariyat, Gadi V.P. Reddy, James P. Glover, Tulsi P. Kharel, Krishna N. Reddy

Entomology and Plant Pathology Faculty Publications and Presentations

Soybean production is substantially affected by insect pests, necessitating the implementation of appropriate management strategies. Effective irrigation and fertilizer regimes have been found to affect pest populations in agroecosystems. However, their interactive effects on herbivore incidence are less understood. This study reports the abundance and diversity of insect pests, especially hemipteran, lepidopteran, and stink bug species complexes, encountered on soybeans throughout their vegetative and reproductive growth stages under varying irrigation and micronutrient treatments. First, we compared total and major insect pest population densities in irrigated and rainfed conditions. Afterwards, we evaluated how the frequency of insect pests on soybean was …

Twenty-Four Year Record Reveals Increasing Discharge In Tributaries To A Key Drinking Water Resource, Shannon Speir, Ireyra G. Tamayo, Alana G. Strauss

Crop, Soil and Environmental Sciences Faculty Publications and Presentations

Climate change is altering precipitation patterns worldwide, yielding changes in streamflow and water availability. Increases in storm frequency and intensity, as well as prolonged droughts, may alter the timing and magnitude of flow and nutrient delivery to downstream systems, many of which serve as key drinking water resources. Thus, we must understand long-term changes in streamflow to protect drinking water supplies. Here, we document changes in streamflow delivery to Beaver Lake Reservoir, the key drinking water source in rapidly urbanising Northwest Arkansas. We used publicly available data to analyse flow records in four key tributaries to Beaver Lake from 2000 …

Preliminary Investigation Of Nitrogen Rate Influence On Irrigated Bermudagrass Forage Production, Bronc Finch, Lance Blythe

Crop, Soil and Environmental Sciences Faculty Publications and Presentations

Bermudagrass (Cynodon dactylon) forage production recommendations are often developed in natural environments with available water limitations, often resulting in highly variable responses and lower average responses. As farmland ownership changes and agriculture and irrigation technologies become more affordable the amount of irrigated hay production has increased. While much of the agronomic management does not differ between rain-fed and irrigated environments, nutrient use and uptake dynamics may. This requires a reevaluation and potential adjustment of current recommendations to allow for increased yield potential of irrigated production systems without detrimental impacts on the system. The objective of this study was to identify …

Minority Farmer And Rancher Delinquency And Local Cultural Climate: Evidence From Farm Service Agency's County Office Committees, Lawson Connor, Bruce L. Ahrendsen, Charles B. Dodson, Logan Moss

Agricultural Economics and Agribusiness Faculty Publications and Presentations

Farm delinquency is linked to many negative indicators of farm survival, including increased risk of bankruptcy and farm failure. Minority farmers and ranchers (MFR) have been found to exhibit higher rates of delinquency on U.S. Department of Agriculture (USDA) Farm Service Agency (FSA) loans compared to their non-Hispanic White male counterparts. These findings persist even after accounting for economic/financial factors expected to predict loan repayment performance. In this study, to further explore the existing discrepancy between loan default rates for MFR and White, non-Hispanic borrowers, we look more broadly than financial indicators and introduce MFR representation on the FSA County …

Measuring The Impact Of Hurricane Incidence On Agricultural Production Risk Using Insurance Data, Hunter D. Biram, Micah Cameron-Harp, Jesse Tack

Agricultural Economics and Agribusiness Faculty Publications and Presentations

Hurricanes are considered among the most destructive natural disasters in the United States. The exposure of agricultural production systems to hurricanes varies between regions in contrast to global risks like commodity price volatility and international trade policies. The regional differences in hurricane exposure may lead to heterogeneity in crop insurance premium rates. This work aims to measure the impact of hurricane incidence on production losses for crops grown in the Mississippi Delta. We leverage a county-month panel of insurance losses spanning 2002-2021 from the US Department of Agriculture Risk Management Agency, and daily data from the National Oceanic and Atmospheric …

Insect Pests Of Wheat In North India: A Comprehensive Review Of Their Bio-Ecology And Integrated Management Strategies, Gurveer Singh, Neelendra K. Joshi

Entomology and Plant Pathology Faculty Publications and Presentations

Wheat (Triticum aestivum L.) is a vital food crop for majority of the world's population. However, its yield potential is significantly threatened by insect pests, which adversely affect production, quality, and overall food security. The diverse array of insect pests throughout wheat's growth stages necessitates a comprehensive understanding of their interactions with wheat cultivation. This review critically assesses the diversity, biology, ecology, and management strategies of major insect pests in North India, including aphids, termites, pink stem borer, gram pod borer, armyworm, and brown wheat mite. These pests infest wheat at various growth stages, posing significant challenges to sustainable production. …

Harnessing Rice Glutelin And Chickpea Proteins Interactions To Enhance Functional And Nutritional Qualities Of Plant-Based Cheese, Nikitha Modupalli, Md Mahfuzur Rahman

Food Science Faculty Publications and Presentations

The recent demand for plant-based dairy alternatives has increased the focus on improving the organoleptic, and nutritional attributes of plant cheeses to match their dairy counterparts. This study aimed to develop a functional cheese using the synergistic interactions of rice glutelin and chickpea proteins to enhance both nutritional and textural properties. Functional characterization revealed that rice glutelin exhibited a higher water-holding capacity of 340 % and elevated solubility, while chickpea protein showed a superior oil-holding capacity of 550 % and higher surface hydrophobicity. Cheeses were prepared using a 40:60 blend of rice glutelin to chickpea protein, which yielded 21.3 % …

Chemistry And Biochemistry Affiliated Publications: Snapshot Of The Research Publications 2019-2024., Jeremy J. Smith, Lutishoor Salisbury

University Libraries Faculty Publications and Presentations

This report highlights the chemistry and biochemistry faculty publications for the period 2019-2024. It includes tables identifying the types of publications, the characteristics of the authors, inter-departmental and external cooperation, summary of the citations of the publications, and the JCR ranking of the journals in which they published.

Smart Search Results For Growth And Economic Performance Comparison Of Twenty-Year-Old ... Refine Results For Arkansas Net Energy: A Productive Energy System Sensitive To Broiler Performance And Body Composition Arkansas Net Energy: A Productive Energy System Sensitive To Broiler Performance And Body Composition 21 Of 94 Arkansas Net Energy: A Productive Energy System Sensitive To Broiler Performance And Body Composition, Diego A. Martinez, Nawin Suesuttajit, Cole Umberson, Craig N. Coon

Poultry Science Faculty Publications and Presentations

This study determined the sensitivity of productive energy (PE; Arkansas Net Energy) to performance and body composition and developed predictive models based on PE. Chicks (2,148 day-old ones) were placed in 96 pens and assigned to one of 12 dietary treatments, including varying concentrations of total digestible amino acids (TDAA), digestible CP (dCP), digestible fat (dFat), digestible starch, and non-starch polysaccharides (NSP). Eight replications per treatment, one per block, were used, being the block consecutive groups of birds weekly starting the seven-day experimental period. In each block, birds were control fed to meet similar ME intake, placed in calorimetry chambers …

Effects Of Heat Stress And Depressed Feed Intake On The Cecal And Ileal Microbiota Of Broiler Chickens, Philip M. Campos, Elizabeth S. Greene, Monika Proszkowiec-Weglarz, Sami Dridi

Poultry Science Faculty Publications and Presentations

Chronic heat stress (HS) is known to depress feed intake (FI) and growth in broiler chickens, and may alter the gut microbiota and health, however, the amplitude and duration of each (HS and depressed FI) effect on gut microbiota is still unclear. This study aimed to determine the effects of chronic and acute HS on the cecal and ileal microbiota profiles. Broilers were subjected to thermoneutral (TN, 23 degrees C) or chronic cyclic HS (CHS, 8 h/d, 35 degrees C) condition from d29-42, and one group to acute HS (AHS, 2 h, 35 degrees C) at d42. To distinguish between …