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Response To Single Trait And Multiple Trait Sire Selection In Holstein Cattle (Milk Production, Body Conformation, Reproduction, Breeding Value)., Gary Morgan Hay Jan 1985

Response To Single Trait And Multiple Trait Sire Selection In Holstein Cattle (Milk Production, Body Conformation, Reproduction, Breeding Value)., Gary Morgan Hay

LSU Historical Dissertations and Theses

Direct and correlated responses from two different sire selection strategies were compared for twelve characteristics of dairy cattle. Daughters of sires selected on genetic merit for milk production (ST) were compared to daughters of sires selected on genetic merit for an index of milk production, fat production and type scores (MT). Data consisted of repeated measures of twelve dairy traits on 275 foundation through third generation Holstein cows in a single herd. First through third generation animals represented daughters of 42 AI sires. Phenotypic response to selection was change in first lactation performance and producing ability per generation and per …

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Development Of A Computer-Assisted Instruction Courseware Package In Statistics And A Comparative Analysis Of Three Management Strategies For This Courseware., Preston Dinkins Jan 1985

Development Of A Computer-Assisted Instruction Courseware Package In Statistics And A Comparative Analysis Of Three Management Strategies For This Courseware., Preston Dinkins

LSU Historical Dissertations and Theses

The purpose of this study was to develop and evaluate a tutorial computer-assisted instruction (CAI) lesson teaching the normal distribution and standard scores. Instruction on the normal curve, and unit-normal curve, z-scores, areas under the normal curve, and standard scores was given in this study. This CAI courseware was created in order to teach or review these concepts to graduate students in education. An evaluation of this CAI lesson was conducted. It consisted of a small scale pilot test, and a 2 x 3 factorial design experiment. The pilot test study was conducted so that reaction data to this software …

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Characterization Of The Modified Phagocytic Vacuole Occupied By Intracellular Toxoplasma Gondii (Macrophage, Protozoa)., L. David Sibley Jan 1985

Characterization Of The Modified Phagocytic Vacuole Occupied By Intracellular Toxoplasma Gondii (Macrophage, Protozoa)., L. David Sibley

LSU Historical Dissertations and Theses

Toxoplasma gondii is a protozoan parasite which resides in modified endocytic compartments of host cells. Extensive intracellular replication and host cell lysis leads to acute toxoplasmosis which is eventually limited by the host immune response to a chronic state of infection. The features of this unique intracellular compartment, which enables Toxoplasma to survive in macrophages, are reported here. Although Toxoplasma survives in normal macrophages, activated macrophages from immune animals rapidly killed Toxoplasma by production of oxygen radicals and intermediates generated during parasite invasion. In addition, activated macrophages inhibited Toxoplasma growth by an oxygen-independent mechanism. Qualitative and quantitative features of oxygen …

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Production And Nitrogen Dynamics Of A Vallisneria Americana Grass Bed In Lake Pontchartrain, Louisiana (Nitrogen Cycle, Modeling, Seagrasses, Decomposition Phenology, Vallisneria-Celery Grass-Eelgrass, Environmental Factors)., Diana Lee Steller Jan 1985

Production And Nitrogen Dynamics Of A Vallisneria Americana Grass Bed In Lake Pontchartrain, Louisiana (Nitrogen Cycle, Modeling, Seagrasses, Decomposition Phenology, Vallisneria-Celery Grass-Eelgrass, Environmental Factors)., Diana Lee Steller

LSU Historical Dissertations and Theses

Vallisneria americana grass beds of Lake Pontchartrain contribute approximately 200 g dry weight/m('2)/yr primary production, a continuous release of detrital material, and rapid nutrient recycling. A harvest method was used to estimate production. The addition of litterfall to harvest production raised annual production estimates by up to 28%. When litterfall was corrected for decomposition, the production estimates were raised by up to 85% over harvest estimates alone. Litterfall and decomposition increased toward shore and occurred throughout the year providing a continuous supply of energy and nutrients. Grass bed production varied along the coastline and was greatest at mid-depths. Values of …

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Role Of The United States Agricultural Teacher Education Profession In International Agriculture And Rural Development., Ismail Bin Yahya Jan 1985

Role Of The United States Agricultural Teacher Education Profession In International Agriculture And Rural Development., Ismail Bin Yahya

LSU Historical Dissertations and Theses

Purpose. The primary goal of this study was to answer the question: What has been the contribution of the United States agricultural teacher education profession to the international development process? The study, therefore, was a synthesis of past involvement of agricultural teacher educators in international agriculture and rural improvement activities since 1950. Population. The population of this study consisted of 117 agricultural teacher educators in the United States with at least .51 FTE responsibilities in teacher education programs and experience in international development acitivites abroad. Objectives. Eight specific objectives of the study were the identification of (1) primary goals of …

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Allelochemicals From Soybean Affecting Pseudoplusia Includens (Walker) Biology And Pheromone From Chilo Plejadellus Zinken Mediating C. Plejadellus Sexual Behavior (Looper)., Porfirio Caballero Jan 1985

Allelochemicals From Soybean Affecting Pseudoplusia Includens (Walker) Biology And Pheromone From Chilo Plejadellus Zinken Mediating C. Plejadellus Sexual Behavior (Looper)., Porfirio Caballero

LSU Historical Dissertations and Theses

Extracts of foliage from the insect resistant soybean genotype PI227687 were bioassayed for activity against the soybean looper, Pseudoplusia includens (Walker), in feeding deterrency and growth inhibition tests. Dichloromethane extract had a pronounced deterrent effect on feeding, while petroleum ether and methanol extracts stimulated feeding. The water extract exhibited neutral activity. Flash chromatography of the dichloromethane extract yielded four fractions with moderate deterrent properties, one which was strongly deterrent, and one which was stimulative. Similar fractionation of the methanol extract yielded four fractions; one stimulated feeding, two deterred feeding, and one was neutral. Feeding P. includens larvae on artificial diet …

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Control, Dynamics, And Kinetics Of Gas Exchange At The Onset And Offset Of Treadmill Exercise In The Pony (Oxygen Deficit, Debt, Ventilatory, Isocapric Hyperprea, Blood)., Scotty Kline Powers Jan 1985

Control, Dynamics, And Kinetics Of Gas Exchange At The Onset And Offset Of Treadmill Exercise In The Pony (Oxygen Deficit, Debt, Ventilatory, Isocapric Hyperprea, Blood)., Scotty Kline Powers

LSU Historical Dissertations and Theses

The purpose of experiment one was to develop and validate an open circuit technique (OCT) employing a mixing-chamber for measurement of gas exchange during non-steady-state exercise in humans and ponies. Serial measurements of oxygen uptake ((')VO(,2)) using human subjects and ponies were made during rest to exercise transitions using the OCT incorporating a time delay to match mixed expired gas concentrations with the appropriate ventilatory volume. Oxygen uptake calculated by the OCT did not differ significantly (P > 0.05) from (')VO(,2) obtained by Douglas bag procedures. These data demonstrate that an OCT analysis system is a sensitive means of (')VO(,2) measurement …

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Rice By-Products In Ruminant Rations, T Wayne White Jan 1985

Rice By-Products In Ruminant Rations, T Wayne White

LSU Agricultural Experiment Station Reports

No abstract provided.

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Performance And Slaughter Characteristics Of 1- And 2-Year-Old Hereford And Hereford-Brahman Steers Grazing Pensacola Bahiagrass, Coastal Bermudagrass, And Dallisgrass, T W. White Jan 1985

Performance And Slaughter Characteristics Of 1- And 2-Year-Old Hereford And Hereford-Brahman Steers Grazing Pensacola Bahiagrass, Coastal Bermudagrass, And Dallisgrass, T W. White

LSU Agricultural Experiment Station Reports

No abstract provided.

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Factors Involved In Soybean Yield Losses At Nonoptimal Planting Times In Louisiana, J E. Board Jan 1985

Factors Involved In Soybean Yield Losses At Nonoptimal Planting Times In Louisiana, J E. Board

LSU Agricultural Experiment Station Reports

No abstract provided.

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Armored Scale Insects (Homoptera: Diaspididae) Of Louisiana, F W. Howard Jan 1985

Armored Scale Insects (Homoptera: Diaspididae) Of Louisiana, F W. Howard

LSU Agricultural Experiment Station Reports

No abstract provided.

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Louisiana Agriculture Magazine, Winter 1985-1986, Lsu Agricultural Experiment Station Jan 1985

Louisiana Agriculture Magazine, Winter 1985-1986, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

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Cenobium 1985, Louisiana State University And Agricultural And Mechanical College, School Of Veterinary Medicine, P. K. Hendrix, Laura Hokett Jan 1985

Cenobium 1985, Louisiana State University And Agricultural And Mechanical College, School Of Veterinary Medicine, P. K. Hendrix, Laura Hokett

Cenobium Yearbook

Cenobium began publication in 1977 and continued through 1990. Produced by students, the yearbooks are a chronicle of the daily life and the special events experienced by veterinary students at the LSU School of Veterinary Medicine.

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Lsu General Catalog 1985-1986, Louisiana State University And Agricultural And Mechanical College Jan 1985

Lsu General Catalog 1985-1986, Louisiana State University And Agricultural And Mechanical College

LSU General Catalog

The LSU General Catalog describes all undergraduate and graduate departments and programs with degree requirements and courses offered for each one. The General Catalog includes information on registration and financial aid as well as academic services offered to all students.

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Evaluation Of Romanomermis Culicivorax As A Biocontrol Agent Of Larval Mosquitoes In Louisiana Ricelands (Mermithidae, Nematode, Psorophora Columbiae, Parasitism)., Todd Warner Walker Jan 1985

Evaluation Of Romanomermis Culicivorax As A Biocontrol Agent Of Larval Mosquitoes In Louisiana Ricelands (Mermithidae, Nematode, Psorophora Columbiae, Parasitism)., Todd Warner Walker

LSU Historical Dissertations and Theses

Bionomic data were collected to evaluate Romanomermis culicivorax as a biocontrol agent of larval mosquitoes in Louisiana ricelands. In laboratory studies, the ability of R. culicivorax preparasites to infect Psorophora columbiae larvae substantially decreased after hosts were approximately 28 hr old. Parasitism at typical Louisiana rice field temperatures of 26, 29, and 32 (+OR-) 0.5(DEGREES)C showed a significant linear decrease (P < 0.01) as the percentage of older larval instars increased at the times of exposure. These data emphasized the need for a synchronous field application of preparasites to challenge the rapidly developing early instars of Ps. columbiae. Based on those data, applications of postparasites to potential mosquito breeding habitats offer greater flexibility in larval mosquito control programs. A floating bioassay container, constructed of plastic pipe, 50 mesh screening, and 8 oz (0.24 liter) sample bottles, was developed to evaluate R. culicivorax postparasites in irrigated agricultural land. Applications of postparasites applied at dosage rates of 0.025 and 0.05 g/m('2) resulted in the establishment, recycling, and overwintering of R. culicivorax in a riceland habitat in southern Louisiana. Infection rates ranged from 0 to 54.1% during the 22 month study. There was no significant differences (P > 0.05) between dosage rates among the plots and parasitism of Ps. columbiae larvae held in the bioassay containers. Depth of oviposition by R. culicivorax was determined by using soil cores previously inoculated with postparasites. Romanomermis culicivorax was found to …

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The Impact Of Individual Species And Complexes Of Pest Arthropod Species On Soybean Grown On Various Row Spacings (Insect Pest Complexes, Non-Conventional Row Spacing)., Jaime Yanes Jr Jan 1985

The Impact Of Individual Species And Complexes Of Pest Arthropod Species On Soybean Grown On Various Row Spacings (Insect Pest Complexes, Non-Conventional Row Spacing)., Jaime Yanes Jr

LSU Historical Dissertations and Theses

During 1982 and 1983, selective soil and foliar insecticides were applied to soybean, Glycine max (L.) Merrill, planted on narrow (51 cm) and wide (76 cm) row spacings to manipulate soybean insects. Individual species and complexes of arthropod species were manipulated in plots to determine the effects of subterranean and above-ground insects on soybean growth and yield potential. Selective insecticides used in a selective manner proved to be an effective tool for studying insect pest complexes. Sub-threshold levels of individual pest species, in combination, had a significant negative impact on yield. In addition, in 1982, the plots in which soybean …

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Alternative Regimes Of Common Property Exploitation For Manganese Nodules And Their Market Structure Impact., Akbar Barzegar Marvasti Jan 1985

Alternative Regimes Of Common Property Exploitation For Manganese Nodules And Their Market Structure Impact., Akbar Barzegar Marvasti

LSU Historical Dissertations and Theses

As a result of the technological and financial changes in the extraction of manganese nodules from the deep-seabed, the nodules have been recognized as an alternative source of minerals to land-based sources. The commercial interest in the extraction of the nodules is primarily for their nickel, cobalt, copper, and manganese. Three sources of uncertainty, however, have prevented involved consortia from entry into the actual production stage. These uncertainties are of a technological, economic, and legal nature. In spite of these difficulties, most experts maintain that the nodules are likely to be mined before the end of the century. The choice …

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The Behavioral Ecology Of The First Instar Southern Green Stink Bug, Nezara Viridula (L.) (Aggregation, Pheromone, Embryo, Egg, Nymph)., Jeffrey Alan Lockwood Jan 1985

The Behavioral Ecology Of The First Instar Southern Green Stink Bug, Nezara Viridula (L.) (Aggregation, Pheromone, Embryo, Egg, Nymph)., Jeffrey Alan Lockwood

LSU Historical Dissertations and Theses

Outer row embryos of the southern green stick bug, Nezara viridula (L.), orient toward the center of the egg mass; inner row embryos do not. Embryonic orientation was mediated by stimuli provided by the glue which holds the egg mass together. Physical and chemical orientation cues associated with the glue were present only on the inner surfaces of outer row eggs; other eggs received no such differential stimuli and therefore oriented as a function of the oviposition behavior of the female. Embryonic orientation assured that upon hatching, outer row nymphs received the stimulation necessary for arrestment and inclusion in the …

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A Study Of The Recidivism Rate Of First Offenders At Louisiana Correctional And Industrial School Who Completed Vocational Training Through L.C.I.S./Sowela Institute, Beverly Ruth Travis, Harold J. Lebleu Dec 1984

A Study Of The Recidivism Rate Of First Offenders At Louisiana Correctional And Industrial School Who Completed Vocational Training Through L.C.I.S./Sowela Institute, Beverly Ruth Travis, Harold J. Lebleu

LSU Historical Dissertations and Theses

T h e p i.i. r p 0 s e o f' t h e s t 'J. d y w a. •=• t o d e t e r rn i n & i t" 1 n m a t e s r e 1 e a. s e d +' r c> rn i_ o u i s i a n a C o r r e c t i o n a. 1 a n d Industrial School who completed a v o c a t i o n a 1 t r a i n i …

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Dependence Of Fishery Species On Salt Marshes: The Role Of Food And Refuge, Donald F. Boesch, R. Eugune Turner Dec 1984

Dependence Of Fishery Species On Salt Marshes: The Role Of Food And Refuge, Donald F. Boesch, R. Eugune Turner

Faculty Publications

Salt marshes are widely believed to serve as nurseries for many fishes and crustaceans of fishery value as a result of the high production of vascular plant detritus and the protection from predation offered by shallow, spatially complex habitats. Comparisons of the yields of species which reside in salt marsh habitats during critical life history stages (such as penaeid shrimp) with the area of such habitats and their greater densities in flooded marshes and associated tidal creeks support the premise that marshes enhance the yield of such species. A range of evidence, including the amount of detrital export from marshes, …

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The Gyroscope Test Of Relativity, B. M. Barker, R. F. O'Connell Dec 1984

The Gyroscope Test Of Relativity, B. M. Barker, R. F. O'Connell

Faculty Publications

No abstract provided.

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Louisiana Agriculture Magazine, Fall 1984, Lsu Agricultural Experiment Station Oct 1984

Louisiana Agriculture Magazine, Fall 1984, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

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Louisiana Agriculture Magazine, Summer 1984, Lsu Agricultural Experiment Station Jul 1984

Louisiana Agriculture Magazine, Summer 1984, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

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Louisiana Agriculture Magazine, Spring 1984, Lsu Agricultural Experiment Station Apr 1984

Louisiana Agriculture Magazine, Spring 1984, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

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A Multitrait-Multisource Examination Of The Relationship Between Moral Judgment And Religiousness Of Eighth Grade Students., Kathleen Trudeau Cranford Jan 1984

A Multitrait-Multisource Examination Of The Relationship Between Moral Judgment And Religiousness Of Eighth Grade Students., Kathleen Trudeau Cranford

LSU Historical Dissertations and Theses

Since results have been equivocal about the relationship between religion and moral judgment, this study was undertaken to determine whether there was evidence for the relationship, using a multitrait-multisource technique. Criticisms of Kohlberg's theory of moral development were reviewed in regard to the issue. Teacher, self, and peer ratings were obtained on scales of religiousness, moral judgment, and social skill, which was included as a discriminant variable. A pilot group of 67 eighth graders was assessed to determine the reliability of the rating scales. Thirty-four eighth graders in the sample completed the religiousness, moral judgment, and social skills rating scales …

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A Time Series Model Of The Controller Functions Of The Human Temperature Regulating System., Mohsen Neghabat Jan 1984

A Time Series Model Of The Controller Functions Of The Human Temperature Regulating System., Mohsen Neghabat

LSU Historical Dissertations and Theses

The objective of this study is to develop time series models of the controller mechanisms of the human temperature regulating system. The controller responses are: changes in metabolic heat production, changes in evaporative heat loss and alterations in the surface blood flow. After evaluating the models developed for the controller mechanisms, the models are validated in the context of a complete simulation model of temperature regulation. Additionally, upper and lower limits are set for the controller responses. Because of the nature of the data available for surface blood flow, this controller response is not represented by time series models. Published …

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Liver And Egg Yolk Cholesterol Changes Caused By Dietary Lipids., Jesus Perez-Buriel Jan 1984

Liver And Egg Yolk Cholesterol Changes Caused By Dietary Lipids., Jesus Perez-Buriel

LSU Historical Dissertations and Theses

A series of seven short term experiments were conducted using SCWL laying hens to study liver and egg yolk cholesterol changes caused by dietary lipids. For all the experiments, the individually caged layers were 55 week-old or older and automated procedures were used to measure the liver and yolk cholesterol responses. In the first four experiments the diets contained olive or safflower oils at 8%, oleic or linoleic acids at 6%, all with or without cholesterol. In experiment 5, dietary levels of olive and safflower (1 and 8%) and cholesterol (0 and 1%) were factorially combined and examined. The olive …

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An In Vitro Evaluation Of The Effect Of Bovine Viral Diarrhea Virus On Preimplantation Bovine Embryos., Charles Richard Looney Jan 1984

An In Vitro Evaluation Of The Effect Of Bovine Viral Diarrhea Virus On Preimplantation Bovine Embryos., Charles Richard Looney

LSU Historical Dissertations and Theses

A total of 402 bovine embryos, non-surgically collected on day 6.5-7.5 after estrus, were utilized in evaluation of fluorescein diacetate (FDA) for estimating embryo viability in vitro and to investigate the effect of Bovine Viral Diarrhea (BVD) Virus on embryonic development during in vitro culture. Fluorescent assessment, using UV microscopy (440-480 nm) of embryos after staining in FDA (2.5 (mu)g/ml phosphate buffered saline: PBS), was found to be a rapid, non-toxic and accurate method for evaluation of viability. Embryos with highest fluorescent scores (Score = 4) prior to culture developed at the highest rate (95.7%), while embryos with no fluorescence …

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The Relationship Between Job Satisfaction And Teacher Performance Of Vocational Agriculture Teachers In Louisiana., Thomas Lewis Grady Jan 1984

The Relationship Between Job Satisfaction And Teacher Performance Of Vocational Agriculture Teachers In Louisiana., Thomas Lewis Grady

LSU Historical Dissertations and Theses

The purpose of this study was to determine the relationship between job satisfaction and teacher performance of vocational agriculture teachers in Louisiana. It was also the intent of the study to identify factors that most influence job satisfaction of these teachers. Four instruments were used to collect the data for this study. The Minnesota Satisfaction Questionnaire (MSQ) was used to measure job satisfaction, a supervisory assessment form and student achievement were used to assess teacher performance, and a demographic form was employed to collect data regarding teachers and principals. Gain scores, used as the measure of student achievement in the …

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Nutrient Availability Patterns Of Various Phosphatic Sources In Pine Bark: Sand Media And Their Effect On Several Species Of Container-Grown Woody Ornamentals And Phosphorus-32 Tracing Of Uptake Of Phosphorus From Ordinary Superphosphate (0-20-0) By Gardenia Jasminoides 'Radicans' (Fertility)., Gary Lee Wade Jan 1984

Nutrient Availability Patterns Of Various Phosphatic Sources In Pine Bark: Sand Media And Their Effect On Several Species Of Container-Grown Woody Ornamentals And Phosphorus-32 Tracing Of Uptake Of Phosphorus From Ordinary Superphosphate (0-20-0) By Gardenia Jasminoides 'Radicans' (Fertility)., Gary Lee Wade

LSU Historical Dissertations and Theses

Solution-phase pH, soluble salts, NH(,4)-N+NO(,3)-N, P and K were compared over a 140-day period in 1982 for five phosphatic sources (0-18-0, 0-46-0, 29-26-0, 18-48-0, 11-55-0) incoporated at three rates in a pine bark-sand medium (4:1 v/v). Treatment effects on visual quality of five ornamental species, media-bound and leaf-tissue nutrient levels (gardenia species) and shoot dry weights (gardenia species) were also investigated. Compared to the check, media amended with each of the P sources were generally lower in pH. Solution-phase nitrogen (NH(,4)-N+NO(,3)-N) levels for the 0-18-0 or 0-46-0 sources were significantly lower than that of the other P sources and the …

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