Life Sciences Commons^™

Farm To School: Strategies For Urban Health, Combatting Sprawl, And Establishing Community Food Systems, Mark Vallianatos, Robert Gottlieb, Margaret Haase

Mark Vallianatos

Farm-to-school is a new, innovative strategy with multiple planning-related objectives. The article evaluates the significance of farm-to-school in relation to improving the health and nutrition of school-age children, particularly low-income youth; strengthening the capacity of local farmers, particularly those engaged in sustainable practices; adding to the toolkit of strategies designed to contain and ultimately reduce sprawl-inducing developments by helping preserve farmland; and helping establish a community food systems approach no longer entirely dependent on the global food system that has come to dominate food growing, processing, distribution, and consumption patterns around the world.

The Goods: Myths And Facts About Probiotics, Andrea Arikawa

Andrea Y Arikawa

Probiotics are “live microorganisms that when administered in adequate amounts confer a health benefit to the host,” according to the World Health Organization. Andrea Arikawa, registered dietitian nutritionist and assistant professor in the Department of Nutrition and Dietetics at the University of North Florida, debunks myths and offers a recipe for you to try.

What’S A Probiotic & Why Do We Need Them?, Andrea Arikawa

Andrea Y Arikawa

No abstract provided.

Community Based Nutritition Education: A Model For Raising Awareness Of Childhood Obesity, Selina Ahmed

Selina M Ahmed PhD

Background: Since 2003, Texas Southern University has coordinated conferences to educate Houston’s Third Ward community about strategies to combat childhood obesity. Presenters included faculty and students as speakers and activity coordinators. Participants indicated that these conferences are helpful in increasing awareness of health problems and the availability of community health resources. Purpose: To address the high rate of childhood obesity in Houston’s Third Ward and its costs in terms of health and long-term productivity on that community, faculty at Texas Southern University (TSU) coordinated annual conferences to educate community members about strategies to combat childhood obesity. Methods: Seven conferences intended …

Effect Of Environmental Factors On Whole Plant Assimilate Partitioning And Associated Gene Expression, Donald Geiger, K. Koch, Wen-Jang Shieh

Donald R. Geiger

Partitioning of assimilated carbon among sink organs is a critical factor that controls the rate and pattern of plant growth. Time-course measurements of plant and organ growth rates are useful for determining how regulation of carbon partitioning controls plantgrowth. Measuring growth rates over a 24 h period reveals the current pattern of carbon partitioning that can be used to predict growth ratesof specific sinks. Comparison of growth rates among sinks under defined conditions can point out key factors that regulate partitioning ofrecently assimilated carbon among sinks. Internal control of carbonpartitioning by developmental programmes regulates the timing andsite of carbon distribution …

Effects Of Protease, Phytase And A Bacillus Sp. Direct-Fed Microbial On Nutrient And Energy Digestibility, Ileal Brush Border Digestive Enzyme Activity And Cecal Short- Chain Fatty Acid Concentration In Broiler Chickens, G. R. Murugesan, L. F. Romero, M. E. Persia

G. R. Murugesan

Two experiments were conducted to determine the effects of protease and phytase (PP) and a Bacillus sp. direct-fed microbial (DFM) on dietary energy and nutrient utilization in broiler chickens. In the first experiment, Ross 308 broiler chicks were fed diets supplemented with PP and DFM in a 262 factorial arrangement. The 4 diets (control (CON), CON + PP, CON + DFM, and CON + PP + DFM) were fed from 15–21 days of age. In Experiment 1, significant interaction (P#0.01) between PP and DFM on the apparent ileal digestibility coefficient for starch, crude protein, and amino acid indicated that both …

Influence Of A Direct-Fedmicrobial And Xylanase Enzyme On The Dietary Energy Uptake Efficiency And Performance Of Broiler Chickens, G. R. Murugesan, M. E. Persia

G. R. Murugesan

BACKGROUND: Efficacy of a multi-strain direct-fed microbial product (PoultryStar® ME; PS) and a xylanase enzyme product on the dietary energy utilization efficiency and resulting performance in broiler chickens was evaluated. Apart from performance parameters, cecal and serum metabolites and activities of hepatic enzymes involved in energy metabolism were also determined. Ross 308 chicks were fed one of four experimental diets [control (CON), CON + PS, CON + xylanase and CON + PS + xylanase] using a 2×2 factorial arrangement from 1–21 days of age.

RESULTS: Cecal proportions of propionate and butyrate, as well as total short-chain fatty acid concentration were …

A High Omega-3 Fatty Acid Diet Has Different Effects On Early And Late Stage Myeloid Progenitors, Melinda Varney, James Buchanan, Yulia Dementieva, W. Hardman, Vincent Sollars

Yulia Dementieva

The effects of the polyunsaturated omega-3 (n-3) and omega-6 (n-6) fatty acids (FA) on hematopoiesis are complex in that both FA forms are processed into leukotrienes, eicosanoids, and prostaglandins, which can have independent effects. These FA have antagonistic effects in that n-6 FA prostaglandins tend to be pro-proliferative and pro-inflammatory, while the effects of n-3 FA prostaglandins are the opposite. We have previously shown that diets high in n-3 FA reduce the size of the middle to later stage myeloid progenitor compartment in FVB X sv129 F1hybrid mice. To assay the effects of high n-3 FA diets on earlier stages …

Healthy Eating And Physical Activity Challenges And Opportunities In After-School Programs: Providers’ Perspectives, Heather Thomas, L. Fellner, Patricia Tucker, Jennifer Irwin

Trish Tucker

The purpose of this study was to understand after-school program providers’ perspectives of (a) current physical activity and nutrition curriculum, practices, and challenges, and (b) necessary modifications, program suggestions or resource needs to improve the healthy eating and active living practices within their after-school program for children aged 6 to 12 years. This qualitative study targeted a sample of nine after-school program providers in London, Ontario. Data was collected via in-depth interviews and a demographic survey between January and April 2009. Strategies to enhance data trustworthiness were incorporated throughout. After-school program providers identified insufficient healthy eating curriculum and requested interactive, …

Validation Of The Effects Of Small Differences In Dietary Metabolizable Energy And Feed Restriction In First-Cycle Laying Hens, G. R. Murugesan, M. E. Persia

G. R. Murugesan

An experiment was conducted to evaluate energy utilization of laying hens fed diets containing 2 ME concentrations, using response criteria including performance, BW, abdominal fat pad, and energy digestibility. The experiment was a 2 × 2 factorial with 2 feeding regimens (ad libitum and restriction fed), and 2 dietary ME levels [2,880 kcal/kg of ME (CON); and 2,790 kcal/kg of ME (LME)]. A total of 60 Hy-Line W36 first-cycle laying hens were fed experimental diets, resulting in 15 individually caged hens for each of the 4 treatments. Hens in the restriction-fed group were fed 90 g of feed per day. …

Food And Nutrition Knowledge During Pregnancy - Absence And Opportunity, Heather Yeatman, Dolly Bondarianzadeh, Karen Charlton, Deanne Condon-Paoloni, Luke Gemming, Danka Sinikovic, Barbara Meyer

Karen E. Charlton

No abstract provided.

New Model For Examining The Energy Metabolism Of Laying Hens, G. Murugesan, Michael Persia

G. R. Murugesan

An experiment was conducted to evaluate the energy utilization of laying hens fed diets containing two energy concentrations, using a holistic approach includingmeasurement of productive, maintenance and storage energy. The experiment was a 2 x 2 factorial arrangementwith two feeding levels (ad libitum and restricted feeding of 90 g feed/hen-d), and two dietary energy levels (HE-high metabolizable energy or ME content of 2,880 kcal/kg; and LE-low ME content of 2,790 kcal/kg). A total of 60 HyLine W36 first-cycle laying hens were fed treatment dietsfor 12 wk from hen age 27 to 39 wk, with 15 individually housed hens for each …

Evaluation Of Energy Values Of Various Oil Sources When Fed To Broiler Chicks, G. Murugesan, Brian Kerr, Michael Persia

G. R. Murugesan

The nitrogen-corrected apparent metabolizable energy (AMEn) values of seven different oil and fat sources used in broiler diets, primarily across the Midwestern US, were determined in a digestibility experiment. Fifteen days old, Ross 308 male broiler chicks were fed diets containing each oil or fat source at 0%, 3%, 6%, and 9% inclusion levels for 7 days before excreta samples were collected to analyze AMEn on day 21. The AMEn was calculated using 2 different methods, including a linear equation slope method as well as calculating the difference between basal diet and oil containing diets. The AMEn values determined by …

A High Omega-3 Fatty Acid Diet Has Different Effects On Early And Late Stage Myeloid Progenitors, Melinda Varney, James Buchanan, Yulia Dementieva, W. Hardman, Vincent Sollars

Elaine Hardman Ph.D.

The effects of the polyunsaturated omega-3 (n-3) and omega-6 (n-6) fatty acids (FA) on hematopoiesis are complex in that both FA forms are processed into leukotrienes, eicosanoids, and prostaglandins, which can have independent effects. These FA have antagonistic effects in that n-6 FA prostaglandins tend to be pro-proliferative and pro-inflammatory, while the effects of n-3 FA prostaglandins are the opposite. We have previously shown that diets high in n-3 FA reduce the size of the middle to later stage myeloid progenitor compartment in FVB X sv129 F1hybrid mice. To assay the effects of high n-3 FA diets on earlier stages …

A High Omega-3 Fatty Acid Diet Has Different Effects On Early And Late Stage Myeloid Progenitors, Melinda Varney, James Buchanan, Yulia Dementieva, W. Hardman, Vincent Sollars

Vincent E Sollars

The effects of the polyunsaturated omega-3 (n-3) and omega-6 (n-6) fatty acids (FA) on hematopoiesis are complex in that both FA forms are processed into leukotrienes, eicosanoids, and prostaglandins, which can have independent effects. These FA have antagonistic effects in that n-6 FA prostaglandins tend to be pro-proliferative and pro-inflammatory, while the effects of n-3 FA prostaglandins are the opposite. We have previously shown that diets high in n-3 FA reduce the size of the middle to later stage myeloid progenitor compartment in FVB X sv129 F1hybrid mice. To assay the effects of high n-3 FA diets on earlier stages …