Beef Science Commons^™

Storage Of Pigeonpea Grain (Cajanus Cajan (L.) Millsp.) In Hermetic Triple-Layer Bags Prevents Losses Caused By Callosobruchus Maculatus (F.) (Coleoptera: Bruchidae), H. D. Affognon, A. W. Njoroge, C. M. Mutungi, J. Manono, D. Baributsa, L. L. Murdock

All Peer-Reviewed Publications

Dry pigeonpea grain is susceptible to infestation from the cowpea bruchid during storage. This study investigated the potential of Purdue Improved Cowpea Storage (PICS™) and polypropylene (PP) bags for reducing insect infestation under ambient laboratory conditions for six months. Some of the bags were artificially infested with cowpea bruchid Callosobruchus maculatus (PICS1, PP1) while others were not (PICS0, PP0). In an additional trial, PP bags containing pigeonpeas were treated with Actellic Super® dust before being artificially infested (PP1Ac). Moisture content, number of live C. maculatus adults, grain damage, and weight loss were determined at monthly intervals. Temperature and relative humidity …

Potential For Rangeland Grassfed Assurance Programs In Western Australia, Eric Broad

Animal production and livestock published reports

The access to large aquifers in the Pilbara region, the investment in mosaic irrigation, the global consumer demand for certified grassfed product and the need to back any branded product with an auditable assurance program were all key factors contributing to the undertaking of this project.

The project conducted a desktop review of existing global grassfed certification programs, undertook modelling to determine the projected viability for grassfed beef, engaged with producers, butchers and processors in Western Australia to determine the potential for developing a Grassfed Assurance Program for Western Australia.

All sectors of the supply chain expressed support for the …

Western Australian Wild Dog Action Plan 2016 - 2021, Wa Wild Dog Action Group, Department Of Agriculture And Food, Western Australia

Biosecurity published reports

The Wild Dog Action Plan 2016 – 2021 is an industry led and driven plan that considers the economic, environmental and social impacts of wild dogs and identifies the key issues for managing them across Western Australia. The plan is designed to protect the livestock and tourism industries and public safety, and recognises the ecological and cultural values of the dingo.

New And Innovative Beef Supply Chains In Thailand, Carey Ramm

Animal production and livestock published reports

The Department of Agriculture and Food Western Australia (DAFWA) has contracted AEC Group Pty Ltd (AEC) to undertake this pre-feasibility study into the creation of new and innovative beef supply chain models in Thailand.

The purpose of this study is to consider the potential industry benefits of diverting existing live export cattle into a dedicated supply chain featuring leading technology and best management practice. A range of potential supply chain models were considered, with detailed analysis focussing on importing, holding, intensively feeding, processing and distributing Western Australian live exported cattle to Thai in-country and regional export markets.

This pre-feasibility study …

Innovative Business Models For Value Creation In The Wa Beef Sector (Northern Beef Futures) - Conceptual Supply Chains For Four Scenarios: Final Draft For Discussion, Ernst And Young

Animal production and livestock published reports

Northern Beef Futures (NBF) is 4-year, $15M program to act as a catalyst to stimulate transformational change for the WA northern beef industry to capture growing export market opportunities, with a view to doubling the WA Beef industry value by 2025.

NBF funded this project to identify and share with the WA beef industry some alternative global agrifood industry growth models and value chain initiatives to improve international competitiveness.

As a result of six global case studies and interviews with agri-SMEs, the following critical success factors have been identified in achieving growth:

• Key client / market facing industry players took …

Effects Of Two-Stage Weaning Duration On Beef Cattle Growth And Vocalization, Ashley N. Deller, Emery O. Clark, Flint Harrelson, Patricia Harrelson

Celebration of Student Scholarship Poster Sessions Archive

No abstract provided.

Prevalence And Distribution Of Gastrointestinal Nematode Parasites And Dung Beetles Associated With Upland And Lowland Grazing Of Irish Native Dexter Cattle, Noel Dineen

Theses

Diseases such as parasitic gastroenteritis are very common in cattle and can have detrimental economic consequences on agricultural productivity. This study was conducted to establish the prevalence and distribution of gastrointestinal nematode parasites associated with Dexter cattle under an organic lowland grazing regime and an extensive upland system. A secondary aim to the study was to investigate dung beetle assemblages in upland and lowland sites and their interactions with gastrointestinal nematode parasites as they offer an alternative method of natural control to organic farming systems in particular.

Cattle weights were recorded and faecal samples were collected at the beginning and …

Relationships Of Beef Cattle Temperament With Feedlot Performance, Jeffrey James Briscoe

Undergraduate Honors Capstone Projects

This study determined relationships between beef cattle temperament and their feedlot performance. Thirty-five Angus cross-bred steers and heifers (18 steers and 17 heifers) were placed in the Utah State University feedlot to take part in the feed trial. Cattle temperament was measured by a chute score (CS, ranging from 1 = calm and not moving to 5 = rearing and violently struggling) and flight speed. Flight speed was measured by two observers to determine how long the animal took to travel 12 feet from the exit of the squeeze chute. Feedlot performance was assessed by body weight (BW) measurements, average …

Northern Beef Infrastructure Audit: Infrastructure Plan And Business Case Summaries - Phase 4 Final Report, Acil Allen Consulting Pty Ltd

Animal production and livestock published reports

The Department of Agriculture and Food, Western Australia (DAFWA) is leading Northern Beef Futures, a four year $15 million project funded by the State Government's Royalties for Regions program, to transform Western Australia’s northern beef industry through improving markets, businesses and productivity. The Northern Beef Futures project will support the success of the beef industry to capture new market opportunities, particularly in Asia, and secure sustainable growth.

ACIL Allen Consulting (ACIL Allen) has been commissioned by DAFWA and Meat and Livestock Australia (MLA) to conduct an audit of infrastructure supporting the beef industry in the Pilbara and Kimberley regions, referred …

Management Characteristics Of Beef Cattle Production In The Northern Plains And Midwest Regions Of The United States, Senorpe Asem-Hiablie, C. Alan Rotz, Robert Stout, Kim Stackhouse-Lawson

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

A comprehensive life cycle assessment of United States beef will provide benchmarks and identify opportunities for improvement. On-going region-specific data collection is characterizing cattle production practices for a more accurate assessment. This study reports production information obtained via online surveys and on-site visits from 2 of 7 regions: the Northern Plains (Nebraska, North Dakota, and South Dakota) and Midwest (Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, and Wisconsin). Ranch responses (n = 512) represented 1.6% of beef cows maintained in both regions with operation sizes varying from 1 to 12,500 cows. Feedlot responses (n = 120) represented 9.6 and …

Wildebeest-Associated Malignant Catarrhal Fever: Perspectives For Integrated Control Of A Lymphoproliferative Disease Of Cattle In Sub-Saharan Africa, Lillian Wambua, Peninah Nduku Wambua, Allan Maurice Ramogo, Domnic Mijele, Moses Yongo Otiende

All Peer-Reviewed Publications

Wildebeest-associated malignant catarrhal fever (WA-MCF), an acute lymphoproliferative disease of cattle caused by alcelaphine herpesvirus 1 (AlHV-1), remains a significant constraint to cattle production in nomadic pastoralist systems in eastern and southern Africa. The transmission of WA-MCF is dependent on the presence of the wildlife reservoir, i.e. wildebeest, belonging to the species Connochaetes taurinus and Connochaetes gnou; hence, the distribution of WA-MCF is largely restricted to Kenya, Tanzania and the Republic of South Africa, where wildebeest are present. WA-MCF is analogous to sheep-associated MCF (SA-MCF) in many aspects, with the latter having sheep as its reservoir host and a more …

Mosquito Host Choices On Livestock Amplifiers Of Rift Valley Fever Virus In Kenya, David P. Tchouassi, Robinson O.K. Okiro, Rosemary Sang, Lee W. Cohnstaedt, David Scott Mcvey, Baldwyn Torto

All Peer-Reviewed Publications

Background: Animal hosts may vary in their attraction and acceptability as components of the host location process for assessing preference, and biting rates of vectors and risk of exposure to pathogens. However, these parameters remain poorly understood for mosquito vectors of the Rift Valley fever (RVF), an arboviral disease, and for a community of mosquitoes. Methods: Using three known livestock amplifiers of RVF virus including sheep, goat and cattle as bait in enclosure traps, we investigated the host-feeding patterns for a community of mosquitoes in Naivasha, an endemic area of Rift Valley fever (RVF), in a longitudinal study for six …

Active Aggregation Among Sexes In Bean Flower Thrips (Megalurothrips Sjostedti) On Cowpea (Vigna Unguiculata), Saliou Niassy, Sunday Ekesi, Nguya K. Maniania, Benedict Orindi, Gerald B. Moritz, Willem J. De Kogel, Sevgan Subramanian

All Peer-Reviewed Publications

Male sexual aggregations are a common territorial, mating-related or resource-based, behaviour observed in diverse organisms, including insects such as thrips. The influence of factors such as plant substrate, time of day, and geographic location on aggregation of thrips is uncertain, therefore we monitored the dispersion of male and female bean flower thrips (BFT), Megalurothrips sjostedti (Trybom) (Thysanoptera: Thripidae), on cowpea, Vigna unguiculata (L.) Walp. (Fabaceae), over three cowpea growth stages and across three cowpea-growing areas of Kenya. Our results indicated that for all the crop growth stages, the density of BFTs varied over the time of day, with higher densities …

Arkansas Animal Science Department Report 2015, Paul Beck, Jason Apple, Beth Kegley, Charles Rosenkrans Jr.

Arkansas Agricultural Experiment Station Research Series

No abstract provided.

High Quality Draft Genomes Of The Mycoplasma Mycoides Subsp. Mycoides Challenge Strains Afadé And B237, Anne Fischer, Ivette Santana-Cruz, Jan Hegerman, Hadrien Gourlé, Elise Schieck, Mathieu Lambert, Suvarna Nadendla, Hezron Wesonga, Rachel A. Miller, Sanjay Vashee, Johann Weber, Jochen Meens, Joachim Frey, Joerg Jores

All Peer-Reviewed Publications

Members of the Mycoplasma mycoides cluster' represent important livestock pathogens worldwide. Mycoplasma mycoides subsp. mycoides is the etiologic agent of contagious bovine pleuropneumonia (CBPP), which is still endemic in many parts of Africa. We report the genome sequences and annotation of two frequently used challenge strains of Mycoplasma mycoides subsp. mycoides, Afadé and B237. The information provided will enable downstream 'omics' applications such as proteomics, transcriptomics and reverse vaccinology approaches. Despite the absence of Mycoplasma pneumoniae like cyto-adhesion encoding genes, the two strains showed the presence of protrusions. This phenotype is likely encoded by another set of genes.

Unraveling Host-Vector-Arbovirus Interactions By Two-Gene High Resolution Melting Mosquito Bloodmeal Analysis In A Kenyan Wildlife-Livestock Interface, David Omondi, Daniel K. Masiga, Yvonne Ukamaka Ajamma, Burtram C. Fielding, Laban Njoroge, Jandouwe Villinger

All Peer-Reviewed Publications

The blood-feeding patterns of mosquitoes are directly linked to the spread of pathogens that they transmit. Efficient identification of arthropod vector bloodmeal hosts can identify the diversity of vertebrate species potentially involved in disease transmission cycles. While molecular bloodmeal analyses rely on sequencing of cytochrome b (cyt b) or cytochrome oxidase 1 gene PCR products, recently developed bloodmeal host identification based on high resolution melting (HRM) analyses of cyt b PCR products is more cost-effective. To resolve the diverse vertebrate hosts that mosquitoes may potentially feed on in sub-Saharan Africa, we utilized HRM profiles of both cyt b and 16S …

Distribution And Diversity Of The Vectors Of Rift Valley Fever Along The Livestock Movement Routes In The Northeastern And Coastal Regions Of Kenya, Samwel O. Arum, Christopher W. Weldon, Benedict Orindi, Tobias Landmann, David P. Tchouassi, Hippolyte D. Affognon, Rosemary Sang

All Peer-Reviewed Publications

Background: Knowledge of vector ecology is important in understanding the transmission dynamics of vector borne disease. In this study, we determined the distribution and diversity of mosquitoes along the major nomadic livestock movement routes (LMR) in the traditional pastoral ecozone of northeastern Kenya. We focused on the vectors of Rift Valley fever virus (RVFv) with the aim of understanding their ecology and how they can potentially influence the circulation of RVFv. Methods: Mosquito surveys were conducted during the short and long rainy seasons from November 2012 to August 2014 using CO2-baited CDC light traps at seven sites selected for their …

Pathogenicity And Performance Of Two Candidate Isolates Of Metarhizium Anisopliae And Beauveria Bassiana (Hypocreales: Clavicipitaceae) In Four Liquid Culture Media For The Management Of The Legume Pod Borer Maruca Vitrata (Lepidoptera: Crambidae), V. Tumuhaise, S. Ekesi, S. A. Mohamed, P. N. Ndegwa, L. W. Irungu, R. Srinivasan, N. K. Maniania

All Peer-Reviewed Publications

The aim of this study was to identify and develop entomopathogenic fungi as biopesticides for management of Maruca vitrata (Fabricius). Fourteen isolates of Metarhizium anisopliae (Metchnikoff) Sorokin and six of Beauveria bassiana (Bals.-Criv.) Vuill. were screened against first instar larvae of M. vitrata. The two most virulent isolates were selected and further tested for production in four liquid media. Different formulations of one isolate were evaluated against different developmental stages. Metarhizium anisopliae ICIPE 18 and ICIPE 69 caused highest larval mortality of 91 and 81%, with lethal time to 50% mortality (LT50) values of 1.8 and 1.7 days and LC50 …

Molecular Mapping Of Qtls For Domestication-Related Traits In Cowpea (V. Unguiculata (L.) Walp.), Mebeaselassie Andargie, Remy S. Pasquet, Bhavani S. Gowda, Geoffrey M. Muluvi, Michael P. Timko

All Peer-Reviewed Publications

Understanding the genetic basis underlying domestication-related traits (DRTs) of cowpea (Vigna unguiculata (L.) Walp.) is important since the genome has experienced divergent domestication and in addition it is also useful to utilize the wild germplasm efficiently for improving different traits of the cultivated cowpea. Quantitative trait loci (QTLs) for DRTs were identified in a population of 159 F7 recombinant inbred lines derived from a cross between a domesticated cowpea (V. unguiculata (L.) Walp.) variety, 524B, and a wild accession, 219. Using the constructed linkage map, QTLs for 10 DRTs were analysed and mapped. QTLs for seed, pod and flower related …

Arkansas Animal Science Department Report 2014, David L. Kreider, Paul Beck

Arkansas Agricultural Experiment Station Research Series

No abstract provided.