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Effect Of Electronegativity On Environmentally Persistent Free Radical (Epfr) Formation, Persistence, And Toxicity On Transition Metal Oxides, Syed Monjur Ahmed Oct 2024

Effect Of Electronegativity On Environmentally Persistent Free Radical (Epfr) Formation, Persistence, And Toxicity On Transition Metal Oxides, Syed Monjur Ahmed

LSU Doctoral Dissertations

Environmentally persistent free radicals (EPFRs) are a group of emerging environmental pollutants. Owing to their resonance structures, EPFRs have significantly higher lifetimes than typical free radicals, and can induce the formation of reactive oxygen species (ROS) known to cause pulmonary and cardiovascular dysfunction. EPFRs form by the adsorption of organic precursors on a transition metal oxide (TMO) surface and exhibit enough stability to cause negative health and environmental effects. While aromatic and substituted aromatic precursors form EPFRs on TMO surface at elevated temperatures and numerous substituted organics are ubiquitous in various industrial processes and household products, studies have largely overlooked …


The Field Research Grant Colloquium, Latin American And Iberian Institute Oct 2024

The Field Research Grant Colloquium, Latin American And Iberian Institute

LAII Events

Thursday, October 17, 2024 | 02:00 pm

Latin American and Iberian Institute (801 Yale Blvd NE)

About:

Join the LAII for a panel event where former field research grant recipients discuss theirresearch projects.

Graduate students can benefit significantly from the opportunity to conduct field research in LatinAmerica, where they combine practice with theory and connect their scholarship to livedexperiences or archival data. To make field research more accessible to students, each spring theLAII offers field research grants (FRGs) to graduate students across campus.

All potential applicants are encouraged to attend.

Featured Speakers:

Anderson Gomes Barbosa (M.A. Student, Spanish and Portuguese) …


Influence Of Tp53 Gene Mutations And Their Allelic Status In Myelodysplastic Syndromes With Isolated 5q Deletion, Maria Julia Montoro, Laura Palomo, Claudia Haferlach, Pamela Acha, Onyee Chan, Yasuo Kubota, Manja Meggendorfer, Robert Briski, Najla Al Ali, Blanca Xicoy, Félix López-Cadenas, Francesc Bosch, Teresa González, Lea Naomi Eder, Andrés Jerez, Yu-Hung Wang, Alessia Campagna, Valeria Santini, Teresa Bernal Del Castillo, Esperanza Such, Hwei-Fang Tien, Nicolás Diaz Varela, Uwe Platzbecker, Detlef Haase, María Díez-Campelo, Matteo Della Porta, Guillermo Garcia-Manero, Daniel H Wiseman, Ulrich Germing, Jaroslaw P Maciejewski, Rami S Komrokji, Francesc Sole, Torsten Haferlach, David Valcárcel Oct 2024

Influence Of Tp53 Gene Mutations And Their Allelic Status In Myelodysplastic Syndromes With Isolated 5q Deletion, Maria Julia Montoro, Laura Palomo, Claudia Haferlach, Pamela Acha, Onyee Chan, Yasuo Kubota, Manja Meggendorfer, Robert Briski, Najla Al Ali, Blanca Xicoy, Félix López-Cadenas, Francesc Bosch, Teresa González, Lea Naomi Eder, Andrés Jerez, Yu-Hung Wang, Alessia Campagna, Valeria Santini, Teresa Bernal Del Castillo, Esperanza Such, Hwei-Fang Tien, Nicolás Diaz Varela, Uwe Platzbecker, Detlef Haase, María Díez-Campelo, Matteo Della Porta, Guillermo Garcia-Manero, Daniel H Wiseman, Ulrich Germing, Jaroslaw P Maciejewski, Rami S Komrokji, Francesc Sole, Torsten Haferlach, David Valcárcel

Faculty, Staff and Student Publications

Mutations in the TP53 gene, particularly multihit alterations, have been associated with unfavorable clinical features and prognosis in patients diagnosed with myelodysplastic syndrome (MDS). Despite this, the role of TP53 gene aberrations in MDS with isolated deletion of chromosome 5 [MDS-del(5q)] remains unclear. This study aimed to assess the impact of TP53 gene mutations and their allelic state in patients with MDS-del(5q). To that end, a comprehensive analysis of TP53 abnormalities, examining both TP53 mutations and allelic imbalances, in 682 patients diagnosed with MDS-del(5q) was conducted. Twenty-four percent of TP53-mutated patients exhibited multihit alterations, whereas the remaining patients displayed monoallelic …


Structural Basis Of The Human Transcriptional Mediator Regulated By Its Dissociable Kinase Module, Ti-Chun Chao, Shin-Fu Chen, Hee Jong Kim, Hui-Chi Tang, Hsiang-Ching Tseng, Leon Palao, Tao Li, Mo-Fan Huang, Dung-Fang Lee, Kenji Murakami, Thomas G Boyer, Kuang-Lei Tsai Oct 2024

Structural Basis Of The Human Transcriptional Mediator Regulated By Its Dissociable Kinase Module, Ti-Chun Chao, Shin-Fu Chen, Hee Jong Kim, Hui-Chi Tang, Hsiang-Ching Tseng, Leon Palao, Tao Li, Mo-Fan Huang, Dung-Fang Lee, Kenji Murakami, Thomas G Boyer, Kuang-Lei Tsai

Faculty, Staff and Student Publications

The eukaryotic transcriptional Mediator comprises a large core (cMED) and a dissociable CDK8 kinase module (CKM). cMED recruits RNA polymerase II (RNA Pol II) and promotes pre-initiation complex formation in a manner repressed by the CKM through mechanisms presently unknown. Herein, we report cryoelectron microscopy structures of the complete human Mediator and its CKM. The CKM binds to multiple regions on cMED through both MED12 and MED13, including a large intrinsically disordered region (IDR) in the latter. MED12 and MED13 together anchor the CKM to the cMED hook, positioning CDK8 downstream and proximal to the transcription start site. Notably, the …


Safety Of Kidney Transplantation From Donors With Hiv, Christine M Durand, Allan Massie, Sander Florman, Tao Liang, Meenakshi M Rana, Alexander Gilbert, Sapna A Mehta, Shikha Mehta, Valentina Stosor, Marcus R Pereira, Michele I Morris, Jonathan Hand, Saima Aslam, Maricar Malinis, Ghady Haidar, Catherine B Small, Carlos A Q Santos, Joanna Schaenman, John Baddley, David Wojciechowski, Emily A Blumberg, Karthik Ranganna, Oluwafisayo Adebiyi, Nahel Elias, Jose A Castillo-Lugo, Emmanouil Giorgakis, Senu Apewokin, Diane Brown, Darin Ostrander, Yolanda Eby, Niraj Desai, Fizza Naqvi, Serena Bagnasco, Natasha Watson, Erica Brittain, Jonah Odim, Andrew D Redd, Aaron A R Tobian, Dorry L Segev Oct 2024

Safety Of Kidney Transplantation From Donors With Hiv, Christine M Durand, Allan Massie, Sander Florman, Tao Liang, Meenakshi M Rana, Alexander Gilbert, Sapna A Mehta, Shikha Mehta, Valentina Stosor, Marcus R Pereira, Michele I Morris, Jonathan Hand, Saima Aslam, Maricar Malinis, Ghady Haidar, Catherine B Small, Carlos A Q Santos, Joanna Schaenman, John Baddley, David Wojciechowski, Emily A Blumberg, Karthik Ranganna, Oluwafisayo Adebiyi, Nahel Elias, Jose A Castillo-Lugo, Emmanouil Giorgakis, Senu Apewokin, Diane Brown, Darin Ostrander, Yolanda Eby, Niraj Desai, Fizza Naqvi, Serena Bagnasco, Natasha Watson, Erica Brittain, Jonah Odim, Andrew D Redd, Aaron A R Tobian, Dorry L Segev

Faculty, Staff and Student Publications

Background: Kidney transplantation from donors with human immunodeficiency virus (HIV) to recipients with HIV is an emerging practice. It has been performed since 2016 under the U.S. congressional HIV Organ Policy Equity Act and is currently approved for research only. The Department of Health and Human Services is considering expanding the procedure to clinical practice, but data are limited to small case series that did not include donors without HIV as controls.

Methods: In an observational study conducted at 26 U.S. centers, we compared transplantation of kidneys from deceased donors with HIV and donors without HIV to recipients with HIV. …


Parallel Genome-Scale Crispr-Cas9 Screens Uncouple Human Pluripotent Stem Cell Identity Versus Fitness, Dingyu Liu, Dapeng Yang, Sarah Graff, Jielin Yan, Renhe Luo, Nipun Verma, Jeyaram R Damodaran, Hanuman T Kale, Samuel J Kaplan, Michael A Beer, Simone Sidoli, Danwei Huangfu Oct 2024

Parallel Genome-Scale Crispr-Cas9 Screens Uncouple Human Pluripotent Stem Cell Identity Versus Fitness, Dingyu Liu, Dapeng Yang, Sarah Graff, Jielin Yan, Renhe Luo, Nipun Verma, Jeyaram R Damodaran, Hanuman T Kale, Samuel J Kaplan, Michael A Beer, Simone Sidoli, Danwei Huangfu

Faculty, Staff and Students Publications

Pluripotent stem cells have remarkable self-renewal capacity: the ability to proliferate indefinitely while maintaining the pluripotent identity essential for their ability to differentiate into almost any cell type in the body. To investigate the interplay between these two aspects of self-renewal, we perform four parallel genome-scale CRISPR-Cas9 loss-of-function screens interrogating stem cell fitness in hPSCs and the dissolution of primed pluripotent identity during early differentiation. These screens distinguish genes with distinct roles in pluripotency regulation, including mitochondrial and metabolism regulators crucial for stem cell fitness, and chromatin regulators that control pluripotent identity during early differentiation. We further identify a core …


2024-10-17 Fys Plan And Sacscoc Accreditation Section 9.3, Morehead State University. Faculty Senate. Oct 2024

2024-10-17 Fys Plan And Sacscoc Accreditation Section 9.3, Morehead State University. Faculty Senate.

Faculty Senate Records

A review of SACSCOC's most recent accreditation report (section 9.3) in relation to the current First Year Seminar Plan discussed at the Faculty Senate meeting on October 17, 2024.


2024-10-17 Review Of Faculty Evaluation Plans, Pac-35, Morehead State University. Faculty Senate. Oct 2024

2024-10-17 Review Of Faculty Evaluation Plans, Pac-35, Morehead State University. Faculty Senate.

Faculty Senate Records

A review of the PAc-35 Faculty Evaluation Plans discussed at the Faculty Senate meeting of October 17, 2024.


2024-10-17 Faculty Senate Newsletter, Morehead State University. Faculty Senate. Oct 2024

2024-10-17 Faculty Senate Newsletter, Morehead State University. Faculty Senate.

Faculty Senate Records

Faculty Senate newsletter from October 17, 2024.


Electron Microscopy Characterization Of King Scallop (Pecten Maximus) Shells From Low-Voltage Sem To 3d-Ebsd Reconstruction, Lise Guichaoua, Benazir Khurshid, Arnaud Benchetrite, Stéphanie Bessette, Bryce Stewart, Natalie Reznikov, Roland Kröger, Raynald Gauvin Oct 2024

Electron Microscopy Characterization Of King Scallop (Pecten Maximus) Shells From Low-Voltage Sem To 3d-Ebsd Reconstruction, Lise Guichaoua, Benazir Khurshid, Arnaud Benchetrite, Stéphanie Bessette, Bryce Stewart, Natalie Reznikov, Roland Kröger, Raynald Gauvin

School of Biological and Marine Sciences

No abstract provided.


Case 32-2024: A 72-Year-Old Woman With Dyspnea, Dysphagia, And Dysarthria, Elizabeth M Raynor Oct 2024

Case 32-2024: A 72-Year-Old Woman With Dyspnea, Dysphagia, And Dysarthria, Elizabeth M Raynor

Faculty, Staff and Students Publications

No abstract provided.


Neighborhood Effects On Acute Pediatric Asthma: Race, Greenspace, And Pm2.5, Elizabeth Wesley, Nathaniel A. Brunsell, David R. Rahn, Jarron M. Saint Onge, Natalie J. Kane, Kevin F. Kennedy Oct 2024

Neighborhood Effects On Acute Pediatric Asthma: Race, Greenspace, And Pm2.5, Elizabeth Wesley, Nathaniel A. Brunsell, David R. Rahn, Jarron M. Saint Onge, Natalie J. Kane, Kevin F. Kennedy

Manuscripts, Articles, Book Chapters and Other Papers

Urbanization produces spatially variable landscapes where climatic, environmental, and social systems interact in complex ways that affect public health. Environmental exposure along with the associated health risks are unevenly distributed and communities of color are often disproportionately affected by poor health outcomes. Acute pediatric asthma is the most common chronic condition of childhood in developed nations and is especially prevalent in minority and low-income children. In this study, we analyze the spatial variability of neighborhood-level acute pediatric asthma emergency department (ED) visits across the Kansas City Metro Area. Using Bayesian negative binomial regression, we describe the relationships and interactions between …


Exploring The Association Between Parenting Stress And A Child’S Exposure To Positive Childhood Experiences (Pces), Elizabeth Crouch Ph.D., Elizabeth Radcliff, Monique J. Brown Ph.D., Mph, Peiyin Hung Ph.D Oct 2024

Exploring The Association Between Parenting Stress And A Child’S Exposure To Positive Childhood Experiences (Pces), Elizabeth Crouch Ph.D., Elizabeth Radcliff, Monique J. Brown Ph.D., Mph, Peiyin Hung Ph.D

Faculty Publications

High levels of parenting stress, defined as a caregiver or parent feeling stress or aggravation from parenting, has been previously shown to be associated with an increased likelihood of neglect, child maltreatment, and household dysfunction: adverse childhood experiences (ACEs). Despite the potential mitigation of positive childhood experiences (PCEs) on ACEs, prior studies on the increased likelihood of a child experiencing ACEs due to parenting stress have left a critical question unanswered: whether high parenting stress may decrease a child’s likelihood of experiencing PCEs. We analyzed the 2019–2020 National Survey of Children’s Health to examine whether higher levels of parenting stress …


Strategies To Empower At-Risk Males In Orange County Florida: A Community-Based Resource, Thressa Marie Fizer Oct 2024

Strategies To Empower At-Risk Males In Orange County Florida: A Community-Based Resource, Thressa Marie Fizer

Walden Dissertations and Doctoral Studies

In Orange County, Florida, community-based programs provide resources for at-risk males who are impacted by social determinant challenges. This study focused on the client intake assessment process of Agency OCF to identify gaps that would benefit from enhanced assessment processes and early intervention efforts creating greater opportunity for program placement of at-risk males in this distressed community. Community-based participatory research served as the interpretive lens and generic qualitative inquiry provided the methodological approach to assess the client intake processes. Yielding no participant responses during recruitment efforts, the study pivoted to focus on an in-depth review of publicly released assessments and …


Successful Strategies Human Resource Managers Use To Retain Nurse Practitioners, Trisha Sims Oct 2024

Successful Strategies Human Resource Managers Use To Retain Nurse Practitioners, Trisha Sims

Walden Dissertations and Doctoral Studies

Nurse practitioner turnover in healthcare organizations has the potential for adverse performance outcomes. Human resource managers are concerned with nurse practitioner retention, as hiring and training costs can cause a healthcare organization to lose revenue. Grounded in Herzberg’s two-factor theory, the purpose of this qualitative single case study was to explore strategies that three human resource managers from one healthcare organization in northeastern Ohio use to retain nurse practitioners. Data were collected using semistructured interviews and a review of organization documents that included data on exit interviews and previous and current retention strategies. Through thematic analysis, five themes were identified: …


Interventions Human Service Professionals Provide To Prevent Human Trafficking, Danielle James Oct 2024

Interventions Human Service Professionals Provide To Prevent Human Trafficking, Danielle James

Walden Dissertations and Doctoral Studies

Human trafficking is a global crisis that impacts individuals across all cultures and communities. The purpose of this single intrinsic case study was to explore the interventions that human service professional directors use to prevent human trafficking in Missouri. Trauma-informed approach was used as the conceptual framework. Participants included seven human service managers and program directors who have successfully implemented interventions to prevent human trafficking. Data were collected from one-on-one, semi-structured interviews with six participants. The data were analyzed using Yin’s five components of data analysis. Seven key themes emerged: the need for multiagency human service collaboration to prevent human …


Canadian Postsecondary Students With Learning Disabilities Describe Experiences With Assistive Services, Sacha Gittens Oct 2024

Canadian Postsecondary Students With Learning Disabilities Describe Experiences With Assistive Services, Sacha Gittens

Walden Dissertations and Doctoral Studies

Colleges and universities typically assist students with learning disabilities. In Canada, such programs are legally mandated to ensure equal access to educational opportunities. However, there is little in the current research literature on the experiences Canadian students with learning disabilities have with using assistive services provided by their postsecondary school, especially for students who have successfully completed postsecondary education. This generic qualitative study used the framework in disability studies in education as a foundation. The information for this study was gathered through online interviews with individuals with learning disabilities who were enrolled or had successfully completed their postsecondary education. A …


Media Framing Of Environmental Issues In Jordanian Digital Newspapers, Ramez Abuhasirah, Rasha Salameh Oct 2024

Media Framing Of Environmental Issues In Jordanian Digital Newspapers, Ramez Abuhasirah, Rasha Salameh


This study investigated media framing of environmental issues in Jordanian digital newspapers. The study employed a media survey approach with content analysis of 335 journalistic articles published on the websites of three major Jordanian newspapers (Al-Ghad, Al-Dustour, Al-Rai) from January 1, 2022, to June 30, 2022. Multi-stage sampling ensured representativeness. Results showed all three Jordanian digital newspapers addressed environmental issues, with Al-Ghad leading (40%), followed by Al-Dustour (31%) and Al-Rai (29%). The study found a diversity of sources in journalistic treatment (officials: 29%, news agencies: 18.5%, journalists: 12.8%). Climate change (23.1%), water resources (17.3%), and food security (14.1%) were the …


University Students' Reliance In Hebron Governorate On Social Media As A Source Of Information About The October 7, 2023 War: A Field Study, Asmaa Musa Al-Adam, Sulaika Muhammad Al-Qadi Oct 2024

University Students' Reliance In Hebron Governorate On Social Media As A Source Of Information About The October 7, 2023 War: A Field Study, Asmaa Musa Al-Adam, Sulaika Muhammad Al-Qadi


The study aimed to determine the extent to which university students in Hebron Governorate rely on social media platforms for coverage of the October 7th war. This study follows descriptive research, using a media audience survey methodology. Data were collected using a questionnaire administered to a random sample of university students in Hebron Governorate, consisting of 211 students. The study reached several conclusions most notably: that the reliance of university students in Hebron Governorate on social media to follow news about the war on Gaza is high, with a percentage of 69.5%. The study also showed that there are cognitive, …


Decision In Art. 78 Proceeding - Coleman, Steve (2024-10-08) Oct 2024

Decision In Art. 78 Proceeding - Coleman, Steve (2024-10-08)

Decisions in Art. 78 Proceedings

No abstract provided.


Oral History As An Instructional Strategy For Emergent Bilinguals, Justin Willis, Maria Garcia Oct 2024

Oral History As An Instructional Strategy For Emergent Bilinguals, Justin Willis, Maria Garcia

The Journal of Advancing Education Practice

This study explored the use of oral history as an instructional strategy for Emergent Bilinguals (EBs), focusing on its impact on learning outcomes, collaboration, and cultural identity. Focusing on patterns of cultural meanings in learning context related to two frameworks, the sociocultural theory, and the culturally responsive pedagogy, this study examined how oral history reduced students’ linguistic and cultural isolation in academic settings towards the goal of educational success. The findings revealed that the use of oral history methodologies enhanced engagement, language development, critical thinking disposition, and perception of belonging of EB students. There are various themes that emerged in …


Using Generative Ai As A Research Tool, Janet Burka, Elizabeth Bittner Oct 2024

Using Generative Ai As A Research Tool, Janet Burka, Elizabeth Bittner

Day Family Research Lab Workshop Series

Effectively choosing and using a generative AI (GenAI) tool requires an understanding of the environmental, ethical, and practical implications of this emerging technology. This workshop aims to teach the principals of prompt engineering, or the process of creating commands that will produce better responses from generative AI models. Participants will also learn strategies for mapping prompts to the research lifecycle from ideation through publication. Discussion will place an emphasis on the responsible use of the technology and identifying contexts where GenAI may provide useful results, and contexts where its use may be less appropriate.


Choosing A Forage System For The Future In Dairying Production In The Western Part Of France, Eric P. Gendron Oct 2024

Choosing A Forage System For The Future In Dairying Production In The Western Part Of France, Eric P. Gendron

IGC Proceedings (1977-2023)

A group of 25 dairy farms (44 ha, 38 cows, 7500 kg of milk/cow) was used for elaborating technical and economic references on dairy production systems in the department of Maine et Loire (western France), between 1986 and 1991. Changes in choosing a forage system began with the restriction of dairy production under EC rules introduced in 1984. Very intensive systems (over 10 000 kg of milk/ ha) no longer guaranteed that a better level of production per cow meant a better income for the farmer. After 5 years of study it was possible to propose 4 forage systems with …


Effect Of Grazing Order On Live-Weight Gain Of Young Female Beef Cattle, Jose Fernando Piva Lobato, Blas H.J Cristaldo Albospino, Fernando Rigo Magalhaves, Assan Ali Taher Oct 2024

Effect Of Grazing Order On Live-Weight Gain Of Young Female Beef Cattle, Jose Fernando Piva Lobato, Blas H.J Cristaldo Albospino, Fernando Rigo Magalhaves, Assan Ali Taher

IGC Proceedings (1977-2023)

In order to evaluate the daily live-weight gain and overall live weight of 2 groups of 30 female beef calves from weaning until 2 years of age, an experiment was run at Field Station al Federal University of Rio Grande do Sul, in Eldorado do Sul district. Group A was introduced to the paddocks first, and the animals were allowed to graze half the available pasture. These animals were then removed and group B was introduced and grazed the remaining available pasture, During the first (28 June 1990-19 October 1990), and second (12 June 1991-16 October 1991 ), winter-spring seasons, …


Animal Keeping By Grazing, I Vinczeffy, M Kota Oct 2024

Animal Keeping By Grazing, I Vinczeffy, M Kota

IGC Proceedings (1977-2023)

This study calls attention to some important parameters and effects of the pasture and grazing, on the basis of our experiments carried out during the last 45 years.


Flood-Tolerant Pastures For Dairying In Northland, P W. Woods, J N. Couchman, A O. Taylor Oct 2024

Flood-Tolerant Pastures For Dairying In Northland, P W. Woods, J N. Couchman, A O. Taylor

IGC Proceedings (1977-2023)

Much flood-prone land in Northland consists of fertile alluvial flats which are or could be used for dairy production. Heavy rainfall from subtropical cyclonic dislurbances have caused severe pastoral damage to these areas by flooding during late summer and early autumn. A range of pasture species were screened to ascertain plant surviv_al under depleted oxygen levels and warm temperatures which occur in flood water during summer. Subtropical grasses screened tended to survive immersion better than temperate species. Creeping grasses such as Hemarthria altissima and Paspalum distichum were more tolerant than P. dilatatum. Of the temperate species, Phalaris arundinacea, Phleum …


Selecting Lucerne Cultivars For Commercial Crop Processing And Fractionation In New South Wales, Australia, H T. Ostrowski-Meissner, F Falconer Oct 2024

Selecting Lucerne Cultivars For Commercial Crop Processing And Fractionation In New South Wales, Australia, H T. Ostrowski-Meissner, F Falconer

IGC Proceedings (1977-2023)

The study was undertaken in the Lachlari River irrigation basin located in the central west region of New South Wales to obtain the fractionation characteristics of 23 varieties of lucerne (Medicago sativa) grown as pure crop stands on a commercial lucerne establishment and select for further study those varieties that showed potential for crop fractionation purposes. The results indicate that of the 23 varieties tested, 9 showed potential for commercial-scale fractionation. These were the Aurora, Trifecta, WL605, Hunterfield, GT58, Sequel, Validor, CUFlOI and Pioneer 5929 with the first three giving the highest yields of crop dry matter, crude …


Effect Of Seasonal Variation In The Fractionation Pattern Of Lucerne Selected For Commercial Crop Processing In Australia, H T. Ostrowski-Meissner, C J. Pearson, L M. Shields Oct 2024

Effect Of Seasonal Variation In The Fractionation Pattern Of Lucerne Selected For Commercial Crop Processing In Australia, H T. Ostrowski-Meissner, C J. Pearson, L M. Shields

IGC Proceedings (1977-2023)

The study was conducted on an irrigated lucerne (Medicago sativa) crop (cv. Aurora) harvested at the late vegetative stage of maturity for processing and fractionation during autumn, spring, early and late summer. The experiment was carried out using replicated commercial-sized irrigation bays with lucerne dry matter (DM) yields estimated to average some 19 t OM/ha/year. Despite irrigation, the lucerne harvested during the late summer season had the lowest nitrogen content at the time of harvest and yielded less lower crude protein lucerne extract as compared to those crops harvested during the spring and autumn seasons. The lower efficiency …


Direct Drilling Forage Maize Into Dairy Pastures In South-Eastern Australia, K E. Pritchard Oct 2024

Direct Drilling Forage Maize Into Dairy Pastures In South-Eastern Australia, K E. Pritchard

IGC Proceedings (1977-2023)

Forage maize (Zea mays) was planted directly into uncultivated dairy pastures after desiccation. A planter specially developed for this purpose, which used coulters, tynes and narrow rotary hoes to place fertiliser and seed precisely, achieved excellent crop establishment in dense red­brown earth soils. Yields were up to 22.7 t of dry matter/ha, similar to that of cultivated seedbeds with flood irrigation and 10% less than with furrow irrigation. Key agronomic requirements for success were a specialised planter, good surface drainage, adequate pre- and post­planting weed control and a requirement for early application of irrigation water and nitrogen fertiliser. …


Breeding To Reduce Susceptibility To Bloat In Dairy Cattle, C A. Morris, R J. Wilkins Oct 2024

Breeding To Reduce Susceptibility To Bloat In Dairy Cattle, C A. Morris, R J. Wilkins

IGC Proceedings (1977-2023)

An experiment with Friesian x Jersey cross cattle was established in 1972 at Ruakura, in order to select in 2 closed herds for high (HS) or low (LS) susceptibility to pasture bloat. By the 1990 calf crop, there was a difference in adjusted bloat score between herds of 0.94 units (1.93 genetic standard deviations). The repeatability and heritability of a single bloat score were 0.13+0.02, and 0.12+0.06, with a heritability of 0.52+0.22 for mean bloat score. Annual death rates from bloat have averaged 2.6% in the HS herd and 0.8% in the LS herd (0% in the LS herd for …