Life Sciences Commons^™

Linkage Studies In Tribolium Confusum Duval (Coleoptera, Tenebrionidae), Halluma Mohamed Edongali

Theses Digitization Project

No abstract provided.

Diatoms In The Gills Of The Commercial White Shrimp, Robin M. Overstreet, Susan Safford

Gulf and Caribbean Research

A white shrimp from Galveston, Texas, is the first reported case of a crustacean internally infected by a diatom. Even though more than one species occurred in debris on and between gill filaments, only individuals of Amphora sp. occurred within gills. To determine if a related diatom would easily reproduce within the shrimp and cause. a host-response similar to that observed, we injected cultured specimens of A. coffaeformis into white shrimp. Under the experimental conditions, individuals of that species did not divide, but they elicited an extensive melanistic host-response.

Effects Of Organic Compounds On Amphibian Reproduction, Wesley J. Birge, Jeffrey A. Black, Robert A. Kuehne

KWRRI Research Reports

Aquatic toxicity tests were conducted with atrazine, carbon tetrachloride, chloroform, methylene chloride, trisodium nitrilotriacetic acid (NTA), and phenol. Each compound was administered to developmental stages of three to five amphibian species. Exposure was initiated at fertilization and maintained through 4 days posthatching. Test responses included lethality and teratogenesis. Different amphibian species exhibited varying degrees of tolerance to the selected compounds. Greatest tolerance usually was observed for the more broadly adapted semi-aquatic and terrestrial species (e.g., Bufo americanus, Bufo fowleri). The more sensitive amphibians usually included those species which normally are restricted to aquatic or moist habitats (e.g., Rana …

The Osmotic Fragility Of Red Blood Cells Of Marine Animals: A Comparative Study, Robert Demanche

Dissertations, Theses, and Masters Projects

No abstract provided.

Genetic Heterogeneity In Complementation Groups Of Propionic Acidemia, Catherine Mckeon

Theses and Dissertations

Propionic acidemia is an autosomal recessively inherited disorder of organic acid metabolism caused by deficient activity of propionyl CoA carboxylase. This enzyme is required for the catabolism of the odd-chain fatty acids, the side chain of cholesterol and the amino acids: isoleucine, methionine, and threonine. Although the clinical expression of this disorder is variable, affected children usually develop ketoacidosis and hyperammonemia which may progress to seizures, coma and possibly death. Some patients may exhibit vomiting, lethargy and hypotonia in the first few weeks of life whereas others may remain asymptomatic for months or even years.(1) The degree of residual enzyme …

1979 Research Results Southeast Kansas Branch Agricultural Experiment Station, K. W. Kelley, R. J. Johnson, L. W. Lomas, J. L. Moyer, R. E. Lamond

Kansas Agricultural Experiment Station Research Reports

Southeast Kansas Experiment Station is in its 30th year of operation. The emphasis has changed over this period to reflect changes in agricultural emphases of the area. The professional research staff consists of four scientists, each with a broad area of research responsibility. Together they emphasize improvement in crop production, forage production, beef cattle production and soil and water management.

Hot Processed Beef--Microbiological Characteristics, C.Y. Lee, Curtis L. Kastner, Michael E. Dikeman, Melvin C. Hunt, Donald H. Kropf, M. Lyon, Daniel Y.C. Fung

Kansas Agricultural Experiment Station Research Reports

To help insure that hot-processed beef has an acceptable shelf life and is microbiologically safe, the microbial characteristics of the product must be evaluated. This is particularly true for hot-processed cuts that are packaged and boxed prior to complete chilling--a practice that facilitates handling. An adequate chilling rate the first several hours postmortem is extremely important to the microbiological quality and shelf life of meat. Therefore, in order to insure an acceptable hot-processed beef product, this study was designed to establish chilling rates necessary to satisfactorily control microbial activity in hot-boned beef.

Performance And Forage Intake Of Range Cows As Affected By Mineral Supplement And Delaying Winter Supplemental Feed, R.J. Pruitt, H.A. Peischel, E.F. Smith, R.R. Schalles, Clenton E. Owensby

Kansas Agricultural Experiment Station Research Reports

Polled Hereford cows on native Flint Hills pasture not supplemented until February lost more weight from November to February and were in poorer condition during the winter and early spring than cows supplemented beginning in November. But birth weights, weaning weights, conception percentages, and calving intervals were similar for both groups. Balancing for phosphorus, potassium, and copper deficiencies in the forage did not improve cow or calf performance. Forage intake ranged from 1.70% of fall body weight when dormant winter grass was low in protein and digestibility to 3.45% when spring grass was higher in protein and more digestible. Forage …

Summer Annual Silages And Hay For Growing Steers, K. Bolsen, H. Ilg, D. Axe, W. Thompson

Kansas Agricultural Experiment Station Research Reports

Sudangrass, pearl millet, sorghum-sudangrass, and forage sorghum silages and sorghum-sudan hay were full-fed to yearling steers in a 90-day trial. Forage sorghum was harvested in the dough stage; the other four forages, in the late-vegetative stage. Steers consumed an average of 12.5% more hay than silage the first 42 days; hay feeding was discontinued then for lack of supply. At 90 days, steers fed forage sorghum silage out-performed those fed the other three silages. Compared with forage sorghum, the other silages had relative feeding values (based on rate and efficiency of gains) of 75% for sudangrass , 62% for pearl …

Cold-Flo, Sila-Bac, And Silo-Best For Corn Silage, K. Bolsen, H. Ilg, Jack G. Riley

Kansas Agricultural Experiment Station Research Reports

Four corn silages (41 to 46% DM) were made August 23 to 26, 1978; treatments were: 1) no additive (control), 2) 8.16 lbs of Cold-flo ammonia per ton, 3) 1.0 lb of Sila-bac per ton, and 4) 1.0 lb of Silo-Best per ton. Silos were opened after 139 days and each was full-fed to 15 heifer calves (3 pens of 5 calves) during a 112-day trial (January 12 to May 4, 1979). The complete-mixed rations contained 88% silage and 12% supplement (Table 19.1). Control silage was supplemented with soybean meal for one group of heifers and urea for another group …

Lasalocid Or Rumensin To Prevent Lactic Acidosis In Cattle, S.M. Dennis, T.B. Avery, E.E. Bartley, S.J. Galitzer, Tiruvoor G. Nagaraja

Kansas Agricultural Experiment Station Research Reports

Lasalocid or Rumensin (monensin) protected cattle gorged with grain from lactic acidosis. Both lasalocid and monensin prevented the decrease in rumen and blood pH and increase in rumen and blood lactic acid (0(-) isomer) usually associated with lactic acidosis. Lasalocid appears more effective in preventing acidosis than monensin.

Factors Influencing Net Income From Steers Through Feedlot, R.R. Schalles, K.O. Zoellner, K. Long

Kansas Agricultural Experiment Station Research Reports

Calves that gained rapidly before going into the feedlot continued to gain rapidly on feed and were more profitable to both the cow-calf operator and the feeder. When fed to their genetic potential, large frame, heavy, young cattle were worth more to the cattle industry than light calves.

Limiting Order Of Amino Acid In Alfalfa Leaf Protein Concentrate (Alpc) For Growing Pigs (1980), A Hsu, G L. Allee

Kansas Agricultural Experiment Station Research Reports

Seventy-two crossbred pigs averaging 23.5 lb initially and 12 crossbred barrows averaging 31.5 lb initially were used to study the limiting order of amino acids in ALPC for growing pigs in a feeding trial and a nitrogen balance trial. The basal diet contained 20% ALPC, as the amino acids source, and dextrose, as the energy source. Pigs fed the basal diet supplemented with methionine gained faster (P<.05) and more efficiently than pigs fed the basal diet, indicating that methionine was the first limiting amino acid in ALPC. Adding L- isoleucine (.2%) in the presence of methionine and lysi1e improved daily gain and feed efficiency (P<.05). These results suggest that isoleucine is the second limiting amino acid. Results from the nitrogen balance trial showed that adding .3% DL-methionine increased nitrogen retention (P<.05), confirming the growth trial results that showed methionine to be the first limiting amino acid in ALPC for growing pigs.; Swine Day, Manhattan, KS, November 13, 1980

Effects Of Artificial Rearing And Restricted Nutrient Intake During The First Three Weeks Of Life On Later Performance And Carcass Characteristics Of Pigs (1980), G L. Allee, M Noll

Kansas Agricultural Experiment Station Research Reports

Sixty pigs from nine 1itters were allotted, 24 hours after birth, by litter, sex, and birth weight to three treatments: A) sow reared, B) artificially reared and fed milk replacer ad libitum twice daily (artificially reared-unrestricted), and C) artificially reared and restricted to 50% of the nutrient intake of treatment B (artificially reared-restricted). Artificially reared pigs were housed in individual cages during the 20 day treatment period. After 21 days of age, pigs were fed corn-soybean meal diets ad libitum to slaughter at 220 pounds. Average daily gains and pig weights at 21 days differed significantly (P<.0l) different among all treatments.; Swine Day, Manhattan, KS, November 13, 1980

The Effects On Boar Reproductive Efficiency Of Exposure To Females During Rearing (1980), Duane L. Davis, J V. Craig, Jim L. Nelssen, Robert H. Hines

Kansas Agricultural Experiment Station Research Reports

Thirty-two boars (16 littermates) were reared from 3½ to 5½ months in either an all-male group or with fence-line exposure to cycling sows and gilts. Exposure to females did not significantly increase testicle or accessory gland weights, sperm production, or libido score. Boars that displayed more sexual activity (mounts and sheath sniffs) from 3½ to 5½ months of age performed superiorly in mating tests at 5½ and 7½ months of age. Libido scores of littermate boars were very similar.; Swine Day, Manhattan, KS, November 13, 1980

Amputation Of Vibrissae In Show Dogs, Thomas E. Mcgill

Veterinary Science and Medicine Collection

Dogs of many different breeds competing in the show-ring are routinely subjected to amputation of the vibrissae, organs that are commonly and incorrectly called "whiskers." This procedure is thought to give the animal's head a cleaner look, which in turn supposedly increases its chances of winning. There are several tricks involved in "whisker trimming" since the animals can retract each vibrissae at least one-quarter inch. Furthermore, they often object strenuously to the operation.

Bringing Nature Into The Zoo: Inexpensive Solutions For Zoo Environments, David Hancocks

Zoos and Aquariums Collection

Animals in captivity have traditionally been kept in sterile and inappropriate environments. Typically this situation still prevails in zoos. Cages are designed only for restraint of the animals, expediency for the public, and convenient maintenance by keepers. The animals' behavioral needs are often ignored. By using nature as a norm, and by using natural materials, the spatial and temporal environment of a captive animal can be easily and greatly enriched. Several examples which have been used at Woodland Park Zoological Gardens are discussed. Their application and expansion are appropriate for most urban zoos.

1980 Beef Cattle Report, Leo E. Lucas

Nebraska Beef Cattle Reports

Weighing steers three consecutive days at the beginning and end of the trial reduced variation and increased the probability of detecting a difference in daily gain and gain/protein ratios between treatments when compared to a standard weighing method (once at the beginning and once at the end of the trial). Regressing 1 initial, 1 final and 11 weekly weights also decreased variation and increased the probability of detecting treatment differences compared to the standard method, but was more variable than using three weights at the beginning and end of the trial.

Young, growing steers and lambs supplemented with natural protein …

Vertical And Horizontal Distributions Of Major Meiofauna Taxa On Selected Beaches In The South Slough Estuary, Charleston, Oregon, Usa, Stuart A. Arkett

University of the Pacific Theses and Dissertations

The purpose of this study was to compare the differences in abundance of Nematoda, Gastrotricha, and Harpacticoida between depths in the sediment at various tide levels and between depths at various sites with increasing time of exposure. It also examines the relationship between the abundances of meiofaunal groups and the mean grain size of the sediment. This study was also a part of the continual baseline-data gathering program for the South Slough Estuarine Sanctuary, Delane A. Munson, Manager.

Effects Of Fixed Interval And Continuous Biofeedback Reinforcement On Emg Frontalis Muscle Activity, Kathleen I. Twinem

University of the Pacific Theses and Dissertations

The effects of continuous vs. intermittent reinforcement using electromyographic (EMG) feedback as the reinforcer were compared in reducing frontalis muscle activity. Fourteen subjects were chosen from a group of 30 students who had expressed an interest in learning how to relax. Those students having the highest pre-experimental baseline scores were chosen. They were matched according to both those scores and sex and then randomly assigned to either a continuous biofeedback reinforcement group or a 30 sec. fixed interval biofeedback reinforcement group. The experiment consisted of nine sessions (three acquisition, two treatment, and four extinction) with integrated EMG activity from the …

The Zooplankton Communities Of Tomales Bay, California, Debby Jane Johnston

University of the Pacific Theses and Dissertations

This thesis represents a zooplankton study of Tomales Bay, Marin County, California. It consists of two papers. The first paper, "The Abundance of Copepods in Tomales Bay, California" has been submitted to the California Fish and Game for publication. The second paper, "Diet Studies of the Ctenophore Pleurobrachia bachei has been submitted to Fishery Bulletin. The raw data has been compiled in the Appendix.

Communication And Social Behavior Of Captive Slow Lorises (Nycticebus Coucang), Roberta N. Chinn

University of the Pacific Theses and Dissertations

Communication and. social behavior of a prosimian primate, Nycticebus coucang, were studied to gain a better understanding of communication and social behaviors of the Order Primates. Four adult females, two adult males, and one juvenile male were the subjects for the study. The focal animal technique was used to observe communicative and social behavior. Vocal behaviors were sonagraphically analyzed. Probability of occurrence was calculated for all behavior categories observed. Conditional probabilities were calculated for the eight most frequently occurring behaviors in a lag sequential analysis. Results of the probability of occurrence analysis showed that agonistic behaviors occurred rarely or …

A Preliminary Survey Of The Concentration Of Selected Ions In Some California Native Plants Growing In Serpentine And Non-Serpentine Soil, Gregory Roger Boyko

University of the Pacific Theses and Dissertations

Do the peculiar ion concentrations of serpentine soils appear in the tissues of plants growing on those soils? To what extent are the same species of plants growing in serpentine and non-serpentine soil similar in ionic concentrations? This work was an attempt to answer these questions.

Heterosis And Breed Effects In Swine, R. K. Johnson

Department of Animal Science: Faculty Publications

An objective of the NC-103 regional swine breeding project is to evaluate inter-population and intra-population performance of domestic and exotic strains of swine. Several cooperating stations have conducted experiments relative to this objective. Projects were not exact replicates, but sufficient overlap allowed combining the information to yield more precise estimates of heterosis and breed effects than was possible from the analyses of data from any single experiment. This publication summarizes data available from NC-103 cooperating stations on breed and heterosis effects in swine. An extensive crossbreeding experiment has been conducted and results published by Canadian researchers Fahmy and Bernard, 1971 …

Agricultural Experiment Station News January 1980

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR’S DESK
PERSONNEL ACTION
GRANTS & CONTRACTS
GENERAL NOTES
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - DECEMBER 1979
BULLETINS PRINTED

Agricultural Experiment Station News January 1980

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - December 1979
BULLETINS PRINTED

Agricultural Experiment Station News January 1980 Letter, Howard Ottoson

Agricultural Research Division: News and Annual Reports

As you know Dr. Roy Arnold has been appointed by The Board of Regents as Dean and Director of the Nebraska Agricultural Experiment Station effective January 1, 1980. Personally, I am very pleased with Roy's appointment. I have become well acquainted with him while he has served as a staff member and a Department Head, and know that he will be a very effective Director of the Nebraska Station. I congratulate him, and you.
This letter is in the nature of an expression of appreciation to you as I leave the job of Dean and Director of the Station. I …

Geochemical And Biogeochemical Interactions In A Hot Spring, William Delis Knox

Dissertations and Theses

Southeast Harney Lake Hot Spring and its effluent channel were examined for spatial and temporal variations in the concentrations of several chemical species, viz. dissolved oxygen, pH, alkalinity, phosphate-phosphorous, nitrate and nitrite-nitrogen, conductivity, chloride, flouride, temperature, calcium, magnesium, potassium, and sodium. Phosphate-phosphorous and nitrate-nitrogen both exhibited downstream increases in concentration. pH and alkalinity increased also, mainly due to CO₂ evolution and temperature mediated carbon species redistribution. The diurnal pH and alkalinity curves exhibited depressions during the daylight hours due to the oxidation of ammonia to nitrate within the pool and effluent stream.

Adjustment Of 21-Day Litter Weight For Number Of Pigs Nursed For Purebred And Crossbred Dams, E. R. Wilson, R. K. Johnson

Department of Animal Science: Faculty Publications

Litter data from two crossbreeding experiments were used to estimate coefficients for regressing 21-day litter weight on litter size at 21-days. Exp. 1 involved 1,003 purebred and F_g gilts of Hampshire, Duroc and Yorkshire breeding and 206 second parity sows of Duroc, Hampshire and Yorkshire breeding; Exp. 2 involved 388 F₁ gilts and sows of Duroc, Yorkshire, Landrace and Spot breeding. The linear and quadratic regression coefficients from the gilt data in Exp. 1 were 5.64 ± .29 kg/pig and -.10 ± .02 kg/(pig)², respectively. For Exp. 2, the regression coefficients were 5.98 ± .71 kg/pig …

Profitability Index For Sires, J. J. Bakker, R. W. Everett, L. Dale Van Vleck

Department of Animal Science: Faculty Publications

A profitability index for evaluation of sires on predicted lifetime production of daughters and their progeny was developed from sire evaluations for milk yield, fat yield, and stayability. Indexes of milk and stayability for first lactations were used to calculate proofs for stayability in later lactations. Predicted milk yields were adjusted to the actual age when the records would be made. Breed averages, which are required for the procedure, were calculated from records of daughters of 1192 Holstein-Friesian sires in the Northeast Artificial Insemination Sire Comparison. Proofs for stayability through the first lactation and indexes for stayability in later lactations …