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Articles 25051 - 25080 of 256033

Full-Text Articles in Life Sciences

Plum Curculio (Conotrachelus Nenuphar), Kate V. Richardson, Marion Murray Jun 2024

Plum Curculio (Conotrachelus Nenuphar), Kate V. Richardson, Marion Murray

All Current Publications

Plum curculio is a brown weevil (beetle with a snout) native to eastern North America, where it is a major pest of pome and stone fruits. It was detected in Box Elder County, Utah, in the early 1980s, and this population remains the only known infestation in western North America, where it is occasionally found in residential and wild fruit trees. Plum curculio is a quarantine pest in western North America (U.S. and Canada), and fruit grown in infested counties is restricted from being exported. Thus, it is a threat to Utah’s fruit industry and requires ongoing monitoring and management …

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Review: Myopathies In Broilers: Supply Chain Approach To Provide Solutions To Challenges Related To Raising Fast Growing Birds, Shai Barbut, Randolph Mitchell, Parker Hall, Craig Bacon, Ritchard Bailey, Casey M. Owens, Massimiliano Petracci Jun 2024

Review: Myopathies In Broilers: Supply Chain Approach To Provide Solutions To Challenges Related To Raising Fast Growing Birds, Shai Barbut, Randolph Mitchell, Parker Hall, Craig Bacon, Ritchard Bailey, Casey M. Owens, Massimiliano Petracci

Poultry Science Faculty Publications and Presentations

This review is a summary of a Poultry Science Association symposium addressing myopathies in broilers’ breast meat, focusing on the interactions between genetics, nutrition, husbandry, and meat processing. The Pectoralis major myopathies (woody breast [WB]; white striping [WS]; spaghetti meat [SM]) and Pectoralis minor (“feathering”) are described, followed by discussing their prevalence, potential causes, current and future ways to mitigate, as well as detection methods (in live birds and meat) as well as ways to utilize affected meat. Overall, breast myopathies remain an important focus across the poultry industry and whilst a lot …

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A Homogeneous Time-Resolved Fluorescence Screen To Identify Sirt2 Deacetylase And Defatty-Acylase Inhibitors, Jie Yang, Joel Cassel, Brian C Boyle, Daniel Oppong, Young-Hoon Ahn, Brian P Weiser Jun 2024

A Homogeneous Time-Resolved Fluorescence Screen To Identify Sirt2 Deacetylase And Defatty-Acylase Inhibitors, Jie Yang, Joel Cassel, Brian C Boyle, Daniel Oppong, Young-Hoon Ahn, Brian P Weiser

Rowan-Virtua School of Osteopathic Medicine Departmental Research

Human sirtuin-2 (SIRT2) has emerged as an attractive drug target for a variety of diseases. The enzyme is a deacylase that can remove chemically different acyl modifications from protein lysine residues. Here, we developed a high-throughput screen based on a homogeneous time-resolved fluorescence (HTRF) binding assay to identify inhibitors of SIRT2's demyristoylase activity, which is uncommon among many ligands that only affect its deacetylase activity. From a test screen of 9600 compounds, we identified a small molecule that inhibited SIRT2's deacetylase activity (IC50 = 7 μM) as well as its demyristoylase activity (IC50 = 37 μM). The inhibitor was composed …

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Long-Term Patterns And Mechanisms Of Plant Invasions In Forests: The Role Of Forest Age And Land-Use History, Chad C. Jones, Matthew H. Yamamoto Jun 2024

Long-Term Patterns And Mechanisms Of Plant Invasions In Forests: The Role Of Forest Age And Land-Use History, Chad C. Jones, Matthew H. Yamamoto

Botany Faculty Publications

It has become increasingly apparent that even mature forests are susceptible to plant invasions. However, invasive plants are often more abundant in younger forest stands. It is difficult to disentangle possible mechanisms that would explain this pattern due to the scarcity of long-term studies in successional forests. Several mechanisms have been proposed to explain patterns of invasions as forests age, including biotic resistance, window of opportunity, historical legacies, and invasion debt. We explored patterns and potential mechanisms of plant invasions over 70 years in a regenerating forest with different land-use histories in the Bolleswood Natural Area, Connecticut, USA. We examined …

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Time And Habitat Structure Shape Insect Acoustic Activity In The Amazon, Leandro A. Do Nascimento, Cristian Pérez-Granados, Janderson B. Rodrigues Alencar, Karen H. Beard Jun 2024

Time And Habitat Structure Shape Insect Acoustic Activity In The Amazon, Leandro A. Do Nascimento, Cristian Pérez-Granados, Janderson B. Rodrigues Alencar, Karen H. Beard

Wildland Resources Faculty Publications

Insects are the most diverse animal taxon on Earth and play a key role in ecosystem functioning. However, they are often neglected by ecological surveys owing to the difficulties involved in monitoring this small and hyper-diverse taxon. With technological advances in biomonitoring and analytical methods, these shortcomings may finally be addressed. Here, we performed passive acoustic monitoring at 141 sites (eight habitats) to investigate insect acoustic activity in the Viruá National Park, Brazil. We first describe the frequency range occupied by three soniferous insect groups (cicadas, crickets and katydids) to calculate the acoustic evenness index (AEI). Then, we assess how …

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Adipose-Derived Mesenchymal Stem Cells And Their Derived Epidermal Progenitor Cells Conditioned Media Ameliorate Skin Aging In Rats, Mohamed M. Kamal, Omar Ibrahim Badr, Tasnim Mahmoud Jun 2024

Adipose-Derived Mesenchymal Stem Cells And Their Derived Epidermal Progenitor Cells Conditioned Media Ameliorate Skin Aging In Rats, Mohamed M. Kamal, Omar Ibrahim Badr, Tasnim Mahmoud

Pharmacy

BACKGROUND: Skin alterations are among the most prominent signs of aging, and they arise from both intrinsic and extrinsic factors that interact and mutually influence one another. The use of D-galactose as an aging model in animals has been widely employed in anti-aging research. Adipose tissue-derived mesenchymal stem cells (Ad-MSCs) are particularly promising for skin anti-aging therapy due to their capacity for effective re-epithelization and secretion of various growth factors essential for skin regeneration. Accordingly, we aimed to examine the potential utility of Ad-MSCs as a therapy for skin anti-aging. METHODS: In this study, we isolated and characterized adipose-derived mesenchymal …

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Evaluating The Impact Of A Virtual Health Coaching Lifestyle Program On Weight Loss After Sleeve Gastrectomy: A Prospective Study, Kristina Strauss, Rachel Sauls, Michelle K. Alencar, Kelly E. Johnson Jun 2024

Evaluating The Impact Of A Virtual Health Coaching Lifestyle Program On Weight Loss After Sleeve Gastrectomy: A Prospective Study, Kristina Strauss, Rachel Sauls, Michelle K. Alencar, Kelly E. Johnson

Kinesiology

Bariatric surgery (BS) is a leading treatment for obesity; however, adverse side effects (e.g., pain and infection) can deter patients or affect weight maintenance. This study investigates how a post-operative virtual health coaching lifestyle program, monitoring virtual weekly goal progress made by patients, affects weight loss after BS, specifically sleeve gastrectomy. Patients recruited for this 6-month study were classified with a BMI > 30 kg/m2 90 days post-operatively. Patients were prescribed lifestyle support delivered by certified health and wellness coaches (InHealth Lifestyle Therapeutics™). Demographic variables (e.g., age, weight, height, and gender) were obtained and compared according to initial, 3-, 6-month, …

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Kit Foxes Demonstrate Characteristics Of Safety And Resource Matching Under Intraguild Predation Pressure By Coyotes In The Great Basin Desert, Nadine A. Pershyn, Eric M. Gese, Erica F. Stuber, Bryan M. Kluever Jun 2024

Kit Foxes Demonstrate Characteristics Of Safety And Resource Matching Under Intraguild Predation Pressure By Coyotes In The Great Basin Desert, Nadine A. Pershyn, Eric M. Gese, Erica F. Stuber, Bryan M. Kluever

Wildland Resources Faculty Publications

Coyotes (Canis latrans) are believed to contribute to declining kit fox (Vulpes macrotis) numbers in the Great Basin desert through intraguild predation. Intraguild prey have been shown to exhibit adaptive compromise, whereby an animal increases selection for risky, but food-rich areas during times of food stress (i.e. winter). We evaluated the habitat selection of kit foxes in the Great Basin desert to elucidate if they demonstrated adaptive compromise as a method of coexisting with coyotes. We created 2nd order resource selection functions to analyze kit fox habitat selection associated with coyote relative probability of use (RPU), …

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06.24.2024 Orsp Connect, Liz Williamson Jun 2024

06.24.2024 Orsp Connect, Liz Williamson

ORED Newsletter

Research Networking Lunch (LINC), NIH podcast, CREW (Community First Research Center for Wellbeing and Creative Achievement) Premier Physics Experiment

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Modeling Pelagic Feeding In The Gulf Of Mexico With Implications For Ecosystem-Based Fisheries Management, Rebecca L. Scott Jun 2024

Modeling Pelagic Feeding In The Gulf Of Mexico With Implications For Ecosystem-Based Fisheries Management, Rebecca L. Scott

USF Tampa Graduate Theses and Dissertations

The focus of this dissertation was simulating trophic dynamics in the pelagic Gulf of Mexico (GOM) with an emphasis on ecosystem-based fishery management (EBFM) strategies for large pelagic species. Fisheries management in the United States largely utilizes single-species assessments, although managers are increasingly interested in EBFM approaches to better account for ecosystem effects on stocks such as predator/prey dynamics. Production in the surface layer of the pelagic zone is variable with environmental conditions and prey is often concentrated in patches by hydrodynamic features. Production is also transported vertically via diel vertical migration, during which deep-sea species provide potentially key forage …

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Kit Foxes Demonstrate Adaptive Compromise Characteristics Under Intraguild Predation Pressure By Coyotes In The Great Basin Desert, Nadine A. Pershyn, Eric M. Gese, Erica F. Stuber, Bryan M. Kluever Jun 2024

Kit Foxes Demonstrate Adaptive Compromise Characteristics Under Intraguild Predation Pressure By Coyotes In The Great Basin Desert, Nadine A. Pershyn, Eric M. Gese, Erica F. Stuber, Bryan M. Kluever

Wildland Resources Faculty Publications

Coyotes (Canis latrans) are believed to contribute to declining kit fox (Vulpes macrotis) numbers in the Great Basin desert through intraguild predation. Intraguild prey have been shown to exhibit adaptive compromise, whereby an animal increases selection for risky, but food-rich areas during times of food stress (i.e. winter). We evaluated the habitat selection of kit foxes in the Great Basin desert to elucidate if they demonstrated adaptive compromise as a method of coexisting with coyotes. We created 2nd order resource selection functions to analyze kit fox habitat selection associated with coyote relative probability of use (RPU), …

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Differential Regulation Of Stard1, Stard4 And Stard6 In The Human Ovary, Nawal A. Yahya, Steven R. King, Bo Shi, Aisha Shaaban, Nicole E. Whitfield, Chunmei Yan, Richard J. Kordus, Gail F. Whitman-Elia, Holly A. Lavoie Jun 2024

Differential Regulation Of Stard1, Stard4 And Stard6 In The Human Ovary, Nawal A. Yahya, Steven R. King, Bo Shi, Aisha Shaaban, Nicole E. Whitfield, Chunmei Yan, Richard J. Kordus, Gail F. Whitman-Elia, Holly A. Lavoie

Cell Biology and Anatomy Faculty Publications

Cells actively engaged in de novo steroidogenesis rely on an expansive intracellular network to efficiently transport cholesterol. The final link in the transport chain is STARD1, which transfers cholesterol to the enzyme complex that initiates steroidogenesis. However, the regulation of ovarian STARD1 is not fully characterized and even less is known for upstream cytosolic cholesterol transporters STARD4 and STARD6. Here, we identified both STARD4 and STARD6 mRNAs in the human ovary but only detected STARD4 protein since the primary STARD6 transcript turned out to be a splice variant. Corpora lutea contained the highest levels of STARD4 and STARD1  mRNA and …

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Climate And Shared Evolutionary History Drive Trait Variation Among Species Of Neotropical Understory Monocots, Eleinis Ávila-Lovera, Oscar M. Vargas, Jennifer L. Funk, Kathleen M. Kay, Gregory R. Goldsmith Jun 2024

Climate And Shared Evolutionary History Drive Trait Variation Among Species Of Neotropical Understory Monocots, Eleinis Ávila-Lovera, Oscar M. Vargas, Jennifer L. Funk, Kathleen M. Kay, Gregory R. Goldsmith

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Environmental variation commonly drives functional trait diversity within species, among species, and across communities. Climate and shared evolutionary history can both influence trait–environment relationships. We studied variation in plant functional traits among closely related Costus species occurring across environmental gradients, the extent to which this variation occurs within single species, and how that variation may be influenced by shared evolutionary history. We measured leaf, aboveground stem, rhizome, and fine root traits of 17 species of Costus in eight sites in Costa Rica and Panama, which varied in elevation, temperature, and precipitation. We then assessed the relationships among traits and environmental …

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Integration Of Electrospun Scaffolds And Biological Polymers For Enhancing The Delivery And Efficacy Of Mesenchymal Stem/Stromal Cell Therapies, Allan John R Barcena, Archana Mishra, Dominic Karl M Bolinas, Benjamin M Martin, Marites P Melancon Jun 2024

Integration Of Electrospun Scaffolds And Biological Polymers For Enhancing The Delivery And Efficacy Of Mesenchymal Stem/Stromal Cell Therapies, Allan John R Barcena, Archana Mishra, Dominic Karl M Bolinas, Benjamin M Martin, Marites P Melancon

Faculty, Staff and Student Publications

Mesenchymal stem/stromal cells (MSCs) have emerged as a promising therapeutic approach for a variety of diseases due to their immunomodulatory and tissue regeneration capabilities. Despite their potential, the clinical application of MSC therapies is hindered by limited cell retention and engraftment at the target sites. Electrospun scaffolds, with their high surface area-to-volume ratio and tunable physicochemical properties, can be used as platforms for MSC delivery. However, synthetic polymers often lack the bioactive cues necessary for optimal cell-scaffold interactions. Integrating electrospun scaffolds and biological polymers, such as polysaccharides, proteins, and composites, combines the mechanical integrity of synthetic materials with the bioactivity …

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An Improved Method For Diagnosis Of Parkinson’S Disease Using Deep Learning Models Enhanced With Metaheuristic Algorithm, Saurav Mallik, Aimin Li, Zhongming Zhao Jun 2024

An Improved Method For Diagnosis Of Parkinson’S Disease Using Deep Learning Models Enhanced With Metaheuristic Algorithm, Saurav Mallik, Aimin Li, Zhongming Zhao

Faculty, Staff and Student Publications

Parkinson's disease (PD) is challenging for clinicians to accurately diagnose in the early stages. Quantitative measures of brain health can be obtained safely and non-invasively using medical imaging techniques like magnetic resonance imaging (MRI) and single photon emission computed tomography (SPECT). For accurate diagnosis of PD, powerful machine learning and deep learning models as well as the effectiveness of medical imaging tools for assessing neurological health are required. This study proposes four deep learning models with a hybrid model for the early detection of PD. For the simulation study, two standard datasets are chosen. Further to improve the performance of …

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An Evolutionary Framework For Agalinis (Orobanchaceae; The False Foxgloves) Reveals A Rapid South American Radiation That Includes Esterhazya, Maribeth Latvis, Vinicius Castro Souza, David C. Tank, Pamela S. Soltis, Douglas E. Soltis Jun 2024

An Evolutionary Framework For Agalinis (Orobanchaceae; The False Foxgloves) Reveals A Rapid South American Radiation That Includes Esterhazya, Maribeth Latvis, Vinicius Castro Souza, David C. Tank, Pamela S. Soltis, Douglas E. Soltis

Biological Sciences Faculty Publications and Presentations

Agalinis (Orobanchaceae, tribe Pedicularideae) consists of approximately 70 hemiparasitic species distributed among North, Central, and South America. Previous phylogenetic studies did not include tropical species nor comprehensive sampling for closely allied genera, limiting our systematic understanding of these lineages. We generated an updated phylogenetic hypothesis from 179 individuals from 51 species of Agalinis and five genera once considered congeneric with Agalinis (Anisantherina, Brachystigma, Dasistoma, Aureolaria, and Esterhazya), particularly focusing on sampling underrepresented Central and South American taxa. Phylogenetic analyses were based on six cpDNA regions (rbcL, matK, trnT(UGU)-trnF(GAA), …

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Importance Of Extrinsic Cues Of Grass-Fed Beef By U.S. Consumers Across Regions, Elizabeth K. Crandall, Kelsey Hall Jun 2024

Importance Of Extrinsic Cues Of Grass-Fed Beef By U.S. Consumers Across Regions, Elizabeth K. Crandall, Kelsey Hall

Applied Sciences, Technology and Education Faculty Publications

Extrinsic qualities have become a priority because they affect the type of beef consumers purchase from grocery stores, farmers' markets, restaurants, and private vendors (Cheung et al., 2017; Gwin & Lev, 2011). Some consumers are concerned with the beef they eat, wanting to know about health benefits (Cheung et al., 2017; Gwin & Lev, 2011), the origin of their food (Grunert, 2005), animal welfare (FMI & FMRPE, 2018; Gillespie et al., 2016), concerns about how their beef is produced (Birt, 2017; Gillespie et al., 2016; Yang & Woods, 2016), environmental practices (FMI & FMRPE, 2018), etc. Increased premiums on grass-fed …

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Editorial: Microorganisms In Polar Regions: Understanding Their Survival Strategies For A Sustainable Future, Trista Vick-Majors, Shiv Mohan Singh, Prashant Kumar Singh Jun 2024

Editorial: Microorganisms In Polar Regions: Understanding Their Survival Strategies For A Sustainable Future, Trista Vick-Majors, Shiv Mohan Singh, Prashant Kumar Singh

Michigan Tech Publications

No abstract provided.

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Smokejumper Obituary: Smith, Donald L. (Mccall 1948), National Smokejumper Association Jun 2024

Smokejumper Obituary: Smith, Donald L. (Mccall 1948), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

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Smokejumper Obituary: Axelson, Albert Kenneth “Ken” (Mccall 1947), National Smokejumper Association Jun 2024

Smokejumper Obituary: Axelson, Albert Kenneth “Ken” (Mccall 1947), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

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External And Internal Attribution In Human-Agent Interaction: Insights From Neuroscience And Virtual Reality, Nina Lauharatanahirun, Andrea Won, Angel Hsing-Chi Hwang Jun 2024

External And Internal Attribution In Human-Agent Interaction: Insights From Neuroscience And Virtual Reality, Nina Lauharatanahirun, Andrea Won, Angel Hsing-Chi Hwang

Human-Machine Communication

Agents are designed in the image of humans, both internally and externally. The internal systems of agents imitate the human brain, both at the levels of hardware (i.e., neuromorphic computing) and software (i.e., neural networks). Furthermore, the external appearance and behaviors of agents are designed by people and based on human data. Sometimes, these humanlike qualities of agents are purposely selected to increase their social influence over human users, and sometimes the human factors that influence perceptions of agents are hidden. Inspired by Blascovich’s “threshold of social influence’, a model designed to explain the effects of different methods of anthropomorphizing …

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Forage Productivity Evaluation And Geographic Information Systems In Temperate Semi-Arid Agro-Ecosystem, H Salinas, R Ramirez, J Zegbe, G Medina, R A. Martinez Jun 2024

Forage Productivity Evaluation And Geographic Information Systems In Temperate Semi-Arid Agro-Ecosystem, H Salinas, R Ramirez, J Zegbe, G Medina, R A. Martinez

IGC Proceedings (1977-2023)

700,000 ha of the temperate semi-arid area of Zacatecas state are grown with rainfed crops. Low productivity is obtained from these crops: 350 kg/ha of beans grain and 500 kg/ha of corn grain. This state is characterized by a wide range of topographic and climatic values. A need for alternative crops led to establishment of a trial to evaluate rainfed forages, and to know in what range these could be located. Geographic information systems were used to find out the potential area of the species. Results indicated that sorghum presented a higher yield (5822 kgDM/ha) than sorghum x sudan (5460), …

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The Effect Of Harvest Techniques On Yield, Botanical Composition And Soil Structure In An Organic Clover Grass Sward, M Lund Jun 2024

The Effect Of Harvest Techniques On Yield, Botanical Composition And Soil Structure In An Organic Clover Grass Sward, M Lund

IGC Proceedings (1977-2023)

The objectives of this study were to find out if lighter machines with less number of wheel-passes are favourable for harvesting grassland under wet conditions. A field trial on an ecological experimental farm in Norway was performed with two different mechanization systems. One was a conventional mechanization system with reduced ground pressure tractor driving a forage harvester and grass trailers, and one less wheeling system with reduced ground pressure where a two-wheel tractor with a mower was putting the grass in a swath and a self loading trailer was picking the swath up. The field work was carried out as …

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Symbiotic Potential And N Returns In Forage And Grain Legumes For Improving The N Economy Of Tropical Cropping Systems, F D. Dakora, J A. Abdogoba Jun 2024

Symbiotic Potential And N Returns In Forage And Grain Legumes For Improving The N Economy Of Tropical Cropping Systems, F D. Dakora, J A. Abdogoba

IGC Proceedings (1977-2023)

There were marked cultivar and species differences in the amounts of N fixed and potential N returns in five forage legumes and ten groundnut (Arachis hypogaea L.) cultivars evaluated for symbiotic performance in both Guinea and Sahel savanna environments. Of the forage legumes, the Crotalaria and Lablab species accumulated greater symbiotic N and therefore showed higher potential N returns for improving the N economy of soils in both Guinea and Sahel savanna in Africa. However, Lablab appeared to be better adapted to the drier Sahel environment compared to the other species. When nutrient imbalances in the Guinea savanna soil …

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Integration Of Forage Legumes Into Maize/Elephant Grass Systems For Dairy Farming, E N. Sabiiti, J S. Mugerwa, P Ngategize, G Kyeyune Jun 2024

Integration Of Forage Legumes Into Maize/Elephant Grass Systems For Dairy Farming, E N. Sabiiti, J S. Mugerwa, P Ngategize, G Kyeyune

IGC Proceedings (1977-2023)

The livestock sector contributes about 30% of the total value of agricultural production but the sector does not meet the demand for milk. Currently, there is serious migration of the rural population to urban centres and this will lead to high demand for milk and milk products. Therefore, the development of peri-urban dairy production by the small scale farmers appears a promising option to solve the problems of malnutrition, increase household incomes and improve the quality of life of these farmers. The dominant production system practised is zero-grazing using improved dairy breeds and feeding elephant grass (Pennisetum purpureum) …

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Compatibility Of Stylosanthes Hamata And Stylosanthes Capitata In Mixed Pastures In The Subhumid Zone Of Nigeria, G Tarawali, M Peters Jun 2024

Compatibility Of Stylosanthes Hamata And Stylosanthes Capitata In Mixed Pastures In The Subhumid Zone Of Nigeria, G Tarawali, M Peters

IGC Proceedings (1977-2023)

The forage productivity of sole plots of Stylosanthes capitata and Stylosanthes hamata in comparison with various proportional mixtures of the two legumes and their effect on soil properties and subsequent maize yield were studied in subhumid Nigeria. Dry matter (DM) yields in the mixtures were higher than in the sole stands, with the mixtures of S. hamata and S. capitata reaching 11959 to 14822 kg/ha over a three year period. Total nitrogen and/or organic carbon concentrations in the soil following the three years of legume were higher in the mixtures than in the sole stands, and this resulted in higher …

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Exploring The Mechanistic Trail Connecting Cellular Function, Health, And Athletic Performance With Phase Angle: A Review On The Physiology Of Phase Angle And Exercise-Based Interventions, Trevor Short, Paulette Yamada Jun 2024

Exploring The Mechanistic Trail Connecting Cellular Function, Health, And Athletic Performance With Phase Angle: A Review On The Physiology Of Phase Angle And Exercise-Based Interventions, Trevor Short, Paulette Yamada

Topics in Exercise Science and Kinesiology

Topics in Exercise Science and Kinesiology Volume 5: Issue 1, Article 7, 2024. Bioelectrical impedance analysis-derived phase angle (PhA) has been widely used in clinical and sports settings, as it is positively associated with health and fitness. However, what PhA is measuring at the cellular level has not been addressed, which limits our interpretation of PhA. The purpose of this review is to provide a roadmap, starting with the mechanistic link between the dielectric properties of mammalian cells and their physiological function. In simplistic terms, PhA measures cellular permittivity and electrical conductivity. These characteristics determine cellular health and function. This …

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Corn Silage In Sustainable And Conventional Systems For Finishing Beef Cattle, J P. Fontenot, V G. Allen, L L. Scott, D H. Vaughan, C A. Laub, D B. Taylor Jun 2024

Corn Silage In Sustainable And Conventional Systems For Finishing Beef Cattle, J P. Fontenot, V G. Allen, L L. Scott, D H. Vaughan, C A. Laub, D B. Taylor

IGC Proceedings (1977-2023)

The objective of the research was to compare finishing beef steers on high corn (Zea mays L.) silage diets in which the corn was produced under conventional and sustainable systems. The conventional corn forage was produced on a given area for 5 yr, using conventional practices, alternating with 5 yr of alfalfa (Medicago sativa L.) The sustainable system corn forage was produced in a 4-yr rotation with small grain cover crops and legumes, in which corn was grown in a given area once every 4 yr. Input of pesticides was less for the sustainable system. Steers were fed …

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Hardseededness Under Field Conditions Of Medicago Polymorpha During Five Softening Seasons In The Mediterranean Zone Of Chile, J Avendano, A Del Pozo, C Ovalle Jun 2024

Hardseededness Under Field Conditions Of Medicago Polymorpha During Five Softening Seasons In The Mediterranean Zone Of Chile, J Avendano, A Del Pozo, C Ovalle

IGC Proceedings (1977-2023)

The long term seed softening of burr medic (Medicago polymorpha L.) was studied in the field in a mediterranean environment in Chile. Burrs were collected in March of 1988, 1989, 1990 and 1991 (collecting years), and placed in the field either on the surface or buried at 1 cm depth. Field germination was recorded regularly and the remaining non-germinated seeds were tested for germination in the laboratory during 4 years. The percentage of soft seeds on soil surface burrs was on average 3.2% (mean of 4 collecting years) after the first summer in the field, and reached 83% after …

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Forage Production In The Rice Fields During Dry Season Ryegrass, White Clover And Oats, A S. Raveloson, E Haraldseide Jun 2024

Forage Production In The Rice Fields During Dry Season Ryegrass, White Clover And Oats, A S. Raveloson, E Haraldseide

IGC Proceedings (1977-2023)

In the highland of Madagascar, lack of good forage is very acute during the dry and cool season. The cultivation of temperate forage in rice fields under irrigation is practised by farmers to feed dairycattle. The main forages which are cultivated are oats (Avena sativa), Italian rye grass (Lolium multiflorum) and white clover (. Under experimental conditions rye grass has given the highest yield, but every species have their particularities, which can be useful in forage production. Three varieties of each species were studied in 1993 and 1994. Experiments were carried at five sites in the winter …

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