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Ryegrasses In Alaska: Grazing Preference, Forage Yields, Digestibility, And Other Comparisons Among Four Types Of Ryegrass, And Responses Of Different Types And Cultivars To Various Management Options, Leslie J. Klebesadel

Bulletin

No abstract provided.

G00-1419 Community Supported Agriculture, Paul Swanson

University of Nebraska-Lincoln Extension: Historical Materials

This NebGuide explains what community supported agriculture is, how it works and what producers will need to do to participate.

Most Nebraskans have not heard of Community Supported Agriculture (CSA) but the concept is about three decades old in Japan and Europe and about 10-15 years old on the east coast of the United States.

Biotechnology, Food, And Agriculture Disputes Or Food Safety And International Trade, Shirley A. Coffield

Canada-United States Law Journal

biotechnology, agriculture, and food safety--Canada, biotechnology, agriculture, and food safety--United States

Wetland Manipulation In The Yalahau Region Of The Northern Maya Lowlands, Scott L. Fedick, Bethany A. Morrison, B. J. Andersen, S. Boucher, J. C. Acosta, Jennifer P. Mathews

Sociology & Anthropology Faculty Research

Manipulation of wetlands for agricultural purposes by the ancient Maya of southern Mexico and Central America has been a subject of much research and debate since the 1970s. Evidence for wetland cultivation systems, in the form of drained or channelized fields, and raised planting platforms, has been restricted primarily to the southern Maya Lowlands. New research in the Yalahau region of Quintana Roo, Mexico, has recorded evidence for wetland manipulation in the far northern lowlands, in the form of rock alignments that apparently functioned to control water movement and soil accumulation in seasonally inundated areas. Nearby ancient settlements date primarily …

Biotechnology, Food, And Agriculture Disputes Or Food Safety And International Trade, Serge Frechette

Canada-United States Law Journal

biotechnology, agriculture, and food safety--Canada, biotechnology, agriculture, and food safety--United States

Ec00-1879 Sorghum Ergot In The Northern Great Plains, Jim Stack

University of Nebraska-Lincoln Extension: Historical Materials

Sorghum is grown throughout Nebraska on approximately 0.6 million acres of land. It is grown as a forage crop as well as a grain crop. There is no significant commercial seed production in Nebraska. Grain sorghum is used domestically as livestock feed, in ethanol production, and to a limited extent as a food crop.

Grain sorghum is also exported to several countries. All sorghum hybrids (grain and forage) are susceptible to ergot disease. Ergot is a disease that impacts sorghum production directly by infecting unfertilized flowers and preventing seed development. Ergot also impacts sorghum production indirectly. Affected fields with honeydew-covered …

American Alligator Nesting Ecology In Impounded Marsh Habitat, Louisiana., Steven Richard Reagan

LSU Historical Dissertations and Theses

The goal was to monitor a large number of female alligators over a 3-year period to obtain information on alligator nesting ecology. This dissertation, although designed to estimate annual nesting rates, provides additional meaningful information on methods of capture, tag retention rates, nest spacing patterns, segregation of size classes, nest site fidelity, the relationship between attendance and nest success, the effects of fire ants on alligator nest success, the relationship between hatchling alligators and their mother, and hatchling dispersal. Passive integrated transponder (PIT), monel web, and cranial mounted reflector tags were evaluated for marking and identifying alligators. Use of harmonic …

The Effects Of Dietary Fatty Acids And Non -Steroidal Anti -Inflammatory Drugs On Cyclooxygenase-2 Expression., Kyung-Hee Sohn

LSU Historical Dissertations and Theses

Dietary n-3 fatty acids and non-steroidal anti-inflammatory drugs (NSAIDs) were shown to have cancer preventive and tumor regressive effects. Fatty acids and NSAIDs are substrate and inhibitors, respectively, of cyclooxygenase-2 (COX-2), which is a key enzyme in the conversion of arachidonic acids to prostaglandins. Thus, the modulating effects of different types of dietary fatty acids and NSAIDs on the expression of COX-2 are studied here. Results show that both n-3 and n-6 polyunsaturated fatty acids (PUFAs) inhibit Lipopolysaccharide (LPS)-induced COX-2 expression and NF-kappaB activation in macrophages. Results from in vitro cell proliferation study indicate that growth of colon tumor cells …

Boron -Uptake Mechanisms And Boron Nutrition Of Rice., Xiaohe Yu

LSU Historical Dissertations and Theses

There are very few studies on B deficiency in rice (Oryza sativa L.). Reported critical values of B deficiency in rice are contradictory and mechanisms of B uptake by plant are not understood. Objectives of this study were to determine B effects on rice grown in hydroponics and soil; to determine critical values of B deficiency in rice tissues, hydroponic solution and soil; and to explore B-uptake mechanisms in both monocots (rice) and dicots (soybean (Glycine max L.)). Rice was grown to maturity in an acid Caddo silt loam at 0 and 1 kg B ha--1 in a greenhouse study, …

Biological And Molecular Properties Of Sweet Potato Leaf Curl Virus., Pongtharin Lotrakul

LSU Historical Dissertations and Theses

In 1994, a sweet potato sample showing leaf curl symptoms was collected from the field in Louisiana. When graft-inoculated, Ipomoea setosa reacted with mild upward leaf curling while I. aquatica reacted with a bright yellow mottle. The putative virus was transmitted by the sweet potato whitefly, Bemisia tabaci biotype B, and it was designated the United States isolate of Sweet potato leaf curl virus (SPLCV-US). Four independent Southern blot hybridizations using the DNA-A of different begomoviruses as probes confirmed the presence of begomovirus-like DNA in the infected plants. Fibrillar inclusions and granular aggregates of geminivirus-like particles were observed in the …

Source, Production And Export Of Dissolved Organic Carbon And Nitrogen, Jacqueline A. Aitkenhead-Peterson

Doctoral Dissertations

The purpose of this research was to quantify the major sources of dissolved organic carbon (DOC) and nitrogen (DON) in forest soils and ascertain mechanisms for their production and export to surface waters. To quantify the source of DOC we made use of the on-going litter manipulation study (DIRT) at Harvard Forest, Massachusetts. The organic horizon supplies 74% of DOC to bulk soil solution, 12% is supplied by leaf litter, and 13% from root exudate and decay. In plots with no inputs, DON concentrations were 9% higher than the control plots. When either roots or litter were excluded, DON concentrations …

Impacts Of Wildlife Viewing: A Case Study Of Dixville Notch Wildlife Viewing Area, Judith Kay Anderson Silverberg

Doctoral Dissertations

Major objectives of this study were to examine the motivations, knowledge level and attitudes of wildlife viewers as well as the response of moose to observation and other human caused stimuli at a designated wildlife viewing site. Moose and other wildlife are attracted to areas where road salt runoffs and pools in low areas around culverts and ditches creating wildlife viewing opportunities.

This study examined whether moose behaviors such as visitation time and rate of use of the salt lick changed from preconstruction (1996) of a wildlife blind to wildlife viewing establishment (1999). Trailmaster monitors strategically located on trails entering …

Ignoring Variation: Are We Missing Opportunities?, Behave

All Current Publications

This publication discusses the fact that each individual person and animal is so unique from one another and the opportunity to study and learn about the differences rather than the similarities and averages is often passed up.

Bulletin No 4315 - Western Australia's Agricultural, Food & Fisheries Industries 1999 - 2000, Besko Trhuij, Francis D'Emden

Bulletins 4000 -

Fifth Edition (revised and updated) December 2000.

Western Australia’s agriculture and fisheries industries have an international reputation for providing premium quality food and fibre produce to customers around the world.

The State of Western Australia is setting the international quality standard in the production of a vast array of food, fibre and fisheries products.

Agriculture Western Australia has developed the Safe Quality Food System (SQF2000), which not only meets stringent world food standards, but is being adopted in many countries as a unique trademark of quality.

Free of many pests, diseases and pollution found elsewhere, the State offers produce sourced …

Western Australian Agriculture - Key Achievements 1999 - 2000, Agriculture Western Australia

Farm Systems and Economics published reports

Agricultural continue to underpinning employment opportunities and the financial viability of the agricultural sector. While the traditional industries such as cereals, wool exports grow and meat remain the most valuable, the growth in oilseeds, pulses, viticulture and horticulture is significant. The resurgence in the live animal trade has been an important milestone for Western Australia and it is essential that we continue to build on this.

To maintain competitiveness, WA farmers need to be at the cutting edge of new technology, responsive to changing customer needs and actively developing new trade opportunities.

Progress Rural Western Australia and Better Business programs …

Dietary Betaine For Swine And Poultry., John O'Neal Matthews

LSU Historical Dissertations and Theses

The purpose of this research was to determine the effects of dietary betaine in swine and poultry under conditions that may benefit the swine and poultry industries. In finishing pigs, one experiment was conducted to determine the effect of dietary betaine level on growth, carcass traits, and pork quality. Another experiment evaluated the interactive effects of betaine, pen spacing, and slaughter handling method. In weanling pigs, five experiments were conducted to determine the interactive effects of betaine and Zn, or to determine if betaine can replace a portion of the methionine requirement. In poultry, two experiments were conducted to determine …

Effects Of Dietary Phytase Supplementation On Growth, Nutrient Utilization, And Phytate Degradation In Channel Catfish, Ictalurus Punctatus., Weibing Yan

LSU Historical Dissertations and Theses

Phytase supplementation increases the availability of phosphorus in fish diets, and dietary protein utilization might be increased as well by lower phytate concentrations in phytase supplemented diets. Experiments were conducted to determine if weight gain; protein utilization; mineral retention; apparent dry matter, protein and mineral digestibility; and phytate degradation in the stomach of channel catfish fed an all-plant-protein diet could be improved by phytase supplementation. Seven diets were tested: a nutrient complete diet (TC) containing 5% fish meal and six all-plant-protein diets (T1--T6) that contained minimal levels of available phosphorus (0.16%; total P = 0.57%) and zinc (53.37 ppm), but …

Effects Of Cobalt-60 Gamma Irradiation On The Malaysian Prawn Macrobrachium Rosenbergii., Nyanti Lee

LSU Historical Dissertations and Theses

A major obstacle in culture of the Malaysian prawn, Macrobrachium rosenbergii, is the complex social structure whereby a few large males dominate the population and reduce production. The goal of this work was to induce reproductive sterility by use of gamma radiation as a means to increase production. Of the 62 publications related to the use of gamma radiation in aquatic species published between 1938 and 1996, 66% did not indicate performance of dosimetry (dosage verification). Samples were not rotated during irradiation in 98% of these studies, which introduces considerable variation in dose. A dosimetric study in this dissertation found …

A Cross-Sectional Study Of Prevalence And Risk Factors For Major Goat Diseases In Eastern And Western Uganda: Results And Exploration Of Biases., Edmond Kato Kabagambe

LSU Historical Dissertations and Theses

In 1998 a cross-sectional study on goat health and management was conducted in eastern and western Uganda. This study involved 1518 goats which were distributed in 145 herds in 5 districts, namely Kumi, Masaka, Mbarara, Soroti and Ssembabule. Cluster sampling was used to select farms across the two regions. A questionnaire on goat health, management and constraints to production was administered to 145 goat owners. Blood and nasal swabs were collected from a random sample of goats. For each goat a physical examination was performed to detect presence of clinical conditions. Serological assays for contagious caprine pleuropneumonia (CCPP), peste des …

Diversity And Spatial Analysis Of Passerine Birds In Relation To Habitat Characteristics Of Woods Along The Northern Coast Of The Gulf Of Mexico., Jose Luis Alcantara

LSU Historical Dissertations and Theses

I studied the ecological diversity and spatial patterns of passerine birds during the springs of 1993, 1994, and 1995 at 3 stopover sites on the Chenier Plains of Louisiana and Texas. A "control" stand with dense understory vegetation and a "reduced" stand with modified understory were at each site. Data were collected on the structure and composition of vegetation and on the abundance and location of birds. Species richness, dominance, and diversity indices were computed for both vegetation and birds. Patterns of floristic impoverishment, greater dominance, and greater plant species diversity were found at the "reduced" stands. "Control" vegetation did …

Habitat Influences On Nongame Bird Nest Success In A Managed And Fragmented Southern Pine Forest., Michael Darren Baker

LSU Historical Dissertations and Theses

We confirmed the breeding-season presence of 52 bird species and assessed the reproductive quality of a fragmented southern pine forest managed for natural resource extraction on Barksdale Air Force Base in northwest Louisiana, USA. We also conducted point counts to assess relative abundance, richness, and diversity among four habitat discontinuity types (timber harvests, pipeline corridors, access roads, and natural gas wells). Each parameter was greater on study plots adjacent to gas wells than on those adjacent to roads. We determined the fate of 817 nests of 42 species between 1996 and 1998 and determined Mayfield daily nest success (MDNS) for …

The Effect Of Storage On Consumer Preference, Sugar Content, And Starch Content Of Spiced Low-Fat Sweet Potato Flavored Yogurt., Mohammad Abdulrahman Al-Fayez

LSU Historical Dissertations and Theses

The primary purpose of this study was to determine if addition of pumpkin pie spice to sweet potato puree would enhance consumer acceptance of sweet potato flavored yogurt. In Phase I, the effect of fat percentage, spice percentage, and addition of sweet potato pre-fermentation and post-fermentation on consumer acceptance was examined to determine the optimum treatment preferred by consumers and the effect of each treatment variable on the fermentation process. Phase II focused on the effect of storage periods of 7, 14, and 21 days on the organoleptic qualities and chemical composition of sweet potato. Analyses showed that the percentage …

The Effect Of Phytase On Nutrient Availability In Diets For Swine And Poultry., Sara Leann Johnston

LSU Historical Dissertations and Theses

A series of experiments was conducted to determine the effect of increasing phytase coefficient of variation (CV) in chick diets, and to determine the effect of phytase addition on nutrient availability in diets for swine and poultry. The first experiment (EXP) simulated varying mix uniformity of phytase by alternately providing two diets with two different concentrations of microbial phytase (FTU). Increasing phytase CV had little effect on growth performance, whereas bone ash and breaking strength and Ca and P retention and excretion decreased only at the most extreme CV. These data suggest that a phytase CV of between 34 and …

Effects Of A Low -Protein Diet Supplemented With Coated And Uncoated Methionine On Methionine Metabolism In The Tilapia Oreochromis Niloticus., Manuel Alberto Segovia-Quintero

LSU Historical Dissertations and Theses

Crude protein is the most expensive macronutrient, the use of plant proteins and crystalline amino acid supplementation is the next logical step to increase nutritional value of plant-based diets. The goal of this experiment was to determine the effect of coated and uncoated crystalline methionine on growth, body composition, and methionine uptake in Nile tilapia Oreochromis niloticus fed methionine supplements. Two experiments were designed for this purpose: one to study the effect of supplementation on weight gain and body composition, and a second to determine the effect of coating on absorption efficiency and utilization of crystalline methionine. Five isonitrogenous (26% …

Structure, Expression And Promoter Activity Of Ubiquitin Genes From Rice (Oryza Sativa L.)., Jianlin Wang

LSU Historical Dissertations and Theses

Successful transgenic plant production is largely dependent on the use of suitable promoters. In this study, we described isolation of rice ubiquitin genes, and demonstrated the potential utility of the rice ubiquitin promoters in plant transformation systems. Two polyubiquitin genes (RUBQ1 and RUBQ2) and two ubiquitin extension/fusion genes (RUBQ3 and RUBQ4) have been isolated from a rice genomic BAC library. DNA sequence data revealed that both RUBQ1 and RUBQ2 contained an open reading frame encoding a hexameric precursor ubiquitin and an intron immediate upstream of the initiation codon. The two ubiquitin fusion/extension genes RUBQ3 and RUBQ4 contained one repeat of …

Mapping Quantitative Trait Loci Controlling The Early Height Growth Of Longleaf Pine And Slash Pine., Changren Weng

LSU Historical Dissertations and Theses

The delay in early height growth (EHG) known as the "grass stage" has been one important factor that limits the artificial regeneration of longleaf pine (Pinus palstris Mill.). Genetic improvement of the "grass stage" by interspecific hybridization between longleaf pine and slash pine (Pinus elliottii Engelm) followed by recurrent backcrosses aiming at the introgression of genes controlling the EHG from slash pine into longleaf pine may be a solution. Developing markers tightly linked to these genes and using them in backcross breeding programs may speed the process of the introgression. Random amplified polymorphic DNA (RAPD) markers were employed to map …

Biotechnology In Western Australian Agriculture, Agriculture Western Australia

Grain and other field crops published reports

The Government of Western Australia believes that the strategic use of biotechnology and particularly gene technology has the potential to offer Western Australian agriculture significant economic benefits by improving the productivity and quality of products, as well as contributing to the development of sustainable farming systems.

Information contained in these binders is intended to give an overview of Biotechnology in relation to what is occurring in Australia, in Western Australia and specifically, at Agriculture Western Australia (AGWEST).

Biotechnology has been around for twenty-five years or more, but has only recently become a public issue in Australia - particularly in relation …

A Method To Discriminate Species From Hydroacoustic Fish Sampling Systems., Rui De Paula E Silva

LSU Historical Dissertations and Theses

Samples of species and size composition obtained by trawling were matched with the corresponding echo-distributions from two hydroacoustic and trawl surveys in the western Indian Ocean, off Mozambique, and in two surveys in the northern Gulf of Mexico. In the Mozambique surveys, a Simrad EY-M echosounder was used and the data was analyzed by applying the Craig & Forbes algorithm. In the Gulf of Mexico surveys, a BioSonics Dual-beam System (Model 102 echosounder, ESP echo-integrator, and ESP dual-beam processor) was used. The results obtained show that, provided that a particular hydroacoustic and trawl sample yielded a stable size-distribution of the …

Clean Water Act Compliance Audit Program For Pork Producers: How Was Such An Agreement Between Epa And The National Pork Producers Reached , Anita K. Chancey

Missouri Law Review

A recent agreement between the Environmental Protection Agency and the National Pork Producers Council puts into place a voluntary inspection program that may lead to reduced fines for pork producers who report and correct Clean Water Act violations This agreement represents the first of its kind between an agriculture group and the Environmental Protection Agency.2 This Article explores the background that led to the agreement. The evolution from small family farming to large corporate livestock production, along with the environmental concerns such evolution has produced, is traced. The next section lays out some of the federal and state statutory and …

The Hidden Work Of The Farm Homemaker, Deborah B. Reed, Susan C. Westneat, Steven R. Browning, Lana Skarke

Preventive Medicine and Environmental Health Faculty Publications

Despite women’s involvement in agricultural production, the work role of women residing in farm households has not been thoroughly examined. Data collected in 1994-1995 as part of the NIOSH-sponsored Farm Family Health and Hazard Surveillance Project were used to address task issues and health status of farm women in Kentucky. In 1996, the farm woman component of the Kentucky study was replicated in five counties in west Texas, allowing an examination of farm women in two large agricultural states. The Kentucky study employed a two-stage cluster design;the Texas study was based on a systematic quota sample of farms. Both studies …