Prevention of enteroxigenic Escherichia coli infections in pigs by dairy-based nutrition

Abstract Postweaning diarrhea (PWD) is a significant enteric disease causing considerable economic losses for the pig industry. Among several aetiological risk factors, enterotoxigenic Escherichia coli (ETEC) is considered to be a major cause. After being routinely used for several decades to control bacterial disease outbreaks in piglet, the use of antibiotics at subtherapeutic concentrations has been banned in the European Union because of the increasing prevalence of resistance to antibiotics in pigs. The removal of in-feed antibiotics from piglet diets has negative economic consequences as it dramatically increases the rate of morbidity and mortality due to ETEC as well as the use of antibiotics for therapeutic purposes. Other than subtherapeutic antibiotics, zinc oxide (ZnO) had been reported to ameliorate and/or prevent the development of PWD in piglets, but its excretion may have negative impacts on the environment. Thus, other alternatives that control ETEC infections in piglets postweaning will be of great advantage. A number of nutritional strategies have been proposed as alternative means of preventing ETEC infections, of which feeding dairy-based products to piglets could be one of such strategies. It is apparent that colostrums, milk and milk fractions such as whey and casein contain several biologically active compounds with anti-microbial and immunomodulatory properties. Recently, these dairy products and their isolated compounds such as lactoferrin and oligosaccharides have been employed as anti-infective agents against ETEC infections in iglets postweaning. The dairy by-products (e.g. whey or whey permeate) may also be fermented to further improve the anti-infective potential of the products. Overall, the anti-infective activities of dairy-based products against ETEC could be attributed to the improvement of the intestinal barrier functions, microbial ecosystem and immunity of the piglets. Keywords : Dairy-based product; Anti-microbial; Immunomodulation; Anti-infective; Enterotoxigenic Escherichia coli; Postweaning diarrhea; Pigle

High School End-of-Course Exams Show Proficiency Gains for 2010

In July, the ADE released results for the 2009-10 end-ofcourse (EOC) exams given in Algebra I, Geometry, and Biology administered in April 2010. These results followed the Grade 11 Literacy results released in June. First, we present statewide 2010 results compared to last year. Second, test scores are examined across the state by districts\u27 region, poverty level, and size. Third, we consider the performance of Arkansas students on other assessments to see if these results are consistent with EOC results

Comprehensive Analysis of Arkansas Teacher Salaries: State, Region, and District

School funding has been an area of contention in the courts of nearly every state. Many of these court cases have challenged the constitutionality of state funding formulas, arguing the funding system was inadequate or inequitable because poor urban or rural districts often faced a disadvantage in garnering tax dollars for education. Specific to Arkansas, in the 1983 decision Dupree v. Alma School District, the Arkansas Supreme Court declared the state’s funding system was not meeting its constitutional requirements

Recognizing the Accomplishments of ADE Commissioner Ken James

This summer, Dr. Ken James announced his resignation as Education Commissioner at the Arkansas Department of Education (ADE). Dr. James’ last day was June 30, 2009 and Diana Julian stepped in as interim commissioner. Today, Governor Mike Beebe announced Tom Kimbrell as his choice for the next commissioner. As we await the official appointment of the new commissioner, the OEP felt it was appropriate to highlight Dr. James’ contributions to Arkansas education

High School End-of-Course Exams Show Proficiency Gains for 2010

In July, the ADE released results for the 2009-10 end-ofcourse (EOC) exams given in Algebra I, Geometry, and Biology administered in April 2010. These results followed the Grade 11 Literacy results released in June. First, we present statewide 2010 results compared to last year. Second, test scores are examined across the state by districts\u27 region, poverty level, and size. Third, we consider the performance of Arkansas students on other assessments to see if these results are consistent with EOC results

Quality Counts 2010: Arkansas Holds Steady

In an attempt to gauge the educational progress of the nation and each state, Education Week has published state report cards since 1997 in its annual Quality Counts series. The 14th annual report - Quality Counts 2010 - was released in January. Four of the six categories (Chance for Success, School Finance, The Teaching Profession, and Standards, Assessment and Accountability) were updated to reflect the most current (2010) data. Arkansas received the highest possible grade (A) in the Standards, Assessments & Accountability category, receiving perfect scores in the subcategories for Standards and School Accountability. Similarly, Arkansas\u27 grade for Transitions and Alignment - or how well a state’s educational system is coordinated from elementary school to college - was a B, tied for sixth in the nation

Depinning and dynamic phases in driven three-dimensional vortex lattices in anisotropic superconductors

We use three-dimensional molecular dynamics simulations of magnetically interacting pancake vortices to study the dynamic phases of vortex lattices in highly anisotropic materials such as BSCCO. Our model treats the magnetic interactions of the pancakes exactly, with long-range logarithmic interactions both within and between planes. The pancake vortices decouple at low drives and show two-dimensional plastic flow. The vortex lattice both recouples and reorders as the driving current is increased, eventually forming a recoupled crystalline-like state at high drives. We construct a phase diagram as a function of interlayer coupling and show the relationship between the recoupling transition and the single-layer reordering transitions.Comment: 2 pages, 1 figure, requires epscrc2.st

Act 35, New School Performance Ratings, and School Choice

Act 35 was a product of the Lakeview v Huckabee case and the related Extraordinary Legislative Session. The law § 6-15-2101 of the Arkansas code required the establishment of three school ratings: a rating of the school’s current academic performance (or status), a rating of the school’s academic improvement (see the OEP policy brief on the new improvement rating) 1 , and a rating based on the school’s fiscal practices. The first set of improvement scores were reported based on the standardized tests administered in spring of 2007 and 2008. The first ratings based on current academic performance are to be based on the 2009-2010 school year, but these ratings have not yet been released to the schools or public as of this writing. In this policy brief, we describe the guidelines shaping this new school rating

Quality Counts 2011

On January 11, Education Week released its 15 th annual Quality Counts report. Since 1997, Education Week has been releasing yearly report cards for each state and the nation as a whole. These report cards attempt to measure educational progress and success in several areas as well as assign an overall letter grade to each state. Some of the grades assigned in the report cards measure the strength of states’ policies, while others measure educational inputs (school funding, job markets) or outputs (K-12 achievement