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Articles 2821 - 2850 of 3226
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Heterospermic Insemination In Swine, Donald G. Levis
Heterospermic Insemination In Swine, Donald G. Levis
Electronic Theses and Dissertations
The studies report herein were conducted to evaluate (1) if there is a difference in pregnancy rate and litter size in swine between heterospermic and homospermic inseminations, (2) the effect of mixing various fresh cm n components involving spermatozoa in the sperm-rich fraction, seminal plasma from the centrifuged post-sperm fraction and Beltsville Ll extender on oxygen consumption, pH, motility and percent dead spermatozoa and (3) the effect of storage (54 hours) on oxygen consumption, pH, motility and percent dead spermatozoa in the various combinations. One Hampshire and one Yorkshire boar were used in the pregnancy rate and litter size study.
The Effect Of Ethyl Alcohol On Serum Levels Of Orally Administered Digoxin In Rabbits, Mildred Inez Hollyhan
The Effect Of Ethyl Alcohol On Serum Levels Of Orally Administered Digoxin In Rabbits, Mildred Inez Hollyhan
Electronic Theses and Dissertations
No abstract provided.
The Vertical Distribution Of Net Plankton In Sardis Reservoir, Mississippi, From July 8, 1975 Through March 26, 1976 / By Fred Thomas Rutherford, Fred Thomas Rutherford
The Vertical Distribution Of Net Plankton In Sardis Reservoir, Mississippi, From July 8, 1975 Through March 26, 1976 / By Fred Thomas Rutherford, Fred Thomas Rutherford
Electronic Theses and Dissertations
No abstract provided.
Cytochemical Observations Of The Polar Plasm In The Potato Beetle, Leptinotarsa Decemlineata (Say) / By Edmond Wakefield Quillen, Jr, Edmond Wakefield Quillen
Cytochemical Observations Of The Polar Plasm In The Potato Beetle, Leptinotarsa Decemlineata (Say) / By Edmond Wakefield Quillen, Jr, Edmond Wakefield Quillen
Electronic Theses and Dissertations
No abstract provided.
Effect Of Manganous Toxicity On Certain Blood Parameters Of Sheep, Farrokh Rohani
Effect Of Manganous Toxicity On Certain Blood Parameters Of Sheep, Farrokh Rohani
Electronic Theses and Dissertations
This investigation is designed to provide new information concerning the effects of toxic levels of manganese on the following blood components of sheep: plasma and erythrocyte (red blood cells) iron and manganese; erythrocyte and leucocyte (white blood cells) counts; hemoglobin concentrations and packed cell volumes; Wintrobe indices; differential counts and body weights.
The Effects Of Selected Pesticides On Ten Isolates Of Terrestrial Algae., Martha Scheer Salk 1945-
The Effects Of Selected Pesticides On Ten Isolates Of Terrestrial Algae., Martha Scheer Salk 1945-
Electronic Theses and Dissertations
Ten algal isolates were obtained from soil into axenic culture and placed into defined media containing from 0 to 50 ppm of DDT, 2, 4-D,2,4,5-T, rotenone, or malathion (in two purities, 95 and 99%). For nine of the isolates, growth was measured photometrically every two weeks for a period of two months. Because of the twisted growth form, of the tenth isolate, a visual estimation was used to measure its growth over the same period of time. The results of the experiments in the light were as follows: 1) 2,4-D and 2,4,5-T were generally neutral in their growth effects. However, …
Effects Of Manganese Chloride On Blood Formation In Rabbits, Donald Wayne Kerr
Effects Of Manganese Chloride On Blood Formation In Rabbits, Donald Wayne Kerr
Electronic Theses and Dissertations
The objectives of these investigations were to determine the effect of manganese on the following: red and white blood cell counts, differential counts, packed cell volume, hemoglobin, reticulocyte composition, and manganese and iron determinations in respect to possible changes in these measurements with prolonged exposure to manganese.
Factors Affecting Efficiency To Weaning In Angus, Charolais, And Reciprocal Cross Cows, Douglas A. Marshall
Factors Affecting Efficiency To Weaning In Angus, Charolais, And Reciprocal Cross Cows, Douglas A. Marshall
Electronic Theses and Dissertations
The purpose of this study was to gain understanding of the variables affecting efficiency of cows and production of their calves to weaning. Specific effects of cow size, condition and milk production on efficiency were examined along with reproductive performance of the experimental females to determine net weaning efficiency. An attempt was also made to examine traits that could be used in practical situations to detect differences in cow efficiency. Considerable research has been conducted to evaluate post weaning efficiency of nutrient utilization, but due to expense and time requirements individual feeding of cows and their progeny has been limited. …
Supplementation Of Opaque-2 And Normal Corn With Lysine And Tryptophan For Finishing Swine, John G. Volz
Supplementation Of Opaque-2 And Normal Corn With Lysine And Tryptophan For Finishing Swine, John G. Volz
Electronic Theses and Dissertations
The Purpose of the research reported herein was to further investigate the adequacy of normal and opaque-2 corn as sources of lysine and tryptophan for finishing swine. The criteria used to measure the value of these two amino acids were growth performance, plasma-free amino acids and carcass data.
Nitrogen Fixation By And Isolation Of Rhizobium Species From Native Legumes From A Tall Grass Prairie In South Dakota, Richard S. Steece
Nitrogen Fixation By And Isolation Of Rhizobium Species From Native Legumes From A Tall Grass Prairie In South Dakota, Richard S. Steece
Electronic Theses and Dissertations
This thesis is concerned primarily with the occurrence of nitrogen fixation in native legumes on burned vs. unburned sections of the tall grass prairie. It is also concerned with the isolation of the root nodule bacteria and their identification as rhizobia. Various other biological data such as plate counts a of soil bacteria and azotobacter plate counts along with the influence of abiotic factors such as temperature, soil moisture and organic matter were determined to see in a relationship could be detected with nitrogen fixation.
Characteristics Of Children's Educational And Recreational Program Personnel In Children's Hospitals And Pediatric Departments Of Large General Hospitals In The United States, Harriet Darling Willoughby
Characteristics Of Children's Educational And Recreational Program Personnel In Children's Hospitals And Pediatric Departments Of Large General Hospitals In The United States, Harriet Darling Willoughby
Electronic Theses and Dissertations
With these objectives in mind, this study attempts to answer the following questions: 1. What is the number of children’s hospitals and pediatric department of large general hospitals in the United States having children’s educational and/or recreational program as compared with 1966 and 1971? 2. What skills and competencies do administrators perceive as necessary and desirable in child care workers? 3. What are the educational and personal characteristics of present children’s educational and/or recreational program administrators and staff? In addition to these specific questions, some information was sought about types of programs, the number of children and staff involved, placement …
Amino Acid Additions To A Low Protein Corn-Soy Diet For Egg Production, Ali Baghaye Kashani
Amino Acid Additions To A Low Protein Corn-Soy Diet For Egg Production, Ali Baghaye Kashani
Electronic Theses and Dissertations
The present study was conducted to determine if the protein level of layer diets could be lowered from the: commonly used 16 percent to 12 percent by supplementation of some of the essential amino acids without reducing the performance of hens. The amino acids used were methionine, lysine, tryptophan and isoleucine. Egg production, egg shell thickness, interior egg quality, body weight, feed efficiency and free amino acid content of the albumen of eggs produced were criteria used to measure the (--) to treatment.
Induction Of Parturition In The Ovine, Ernest L. Harman
Induction Of Parturition In The Ovine, Ernest L. Harman
Electronic Theses and Dissertations
The effects of flumethasone and prostaglandin F2 (PGF) on the time of parturition were studied in the ewe. Pregnant ewes with known conception dates were allotted into a 3 x 3 x 2 factorial designed experiment (1973 study) and into a completely random designed experiment (1974 study). In the 1973 study treatments consisted of three hormones (flumethasone, PGF and saline control), three levels (low, .5 mg flumethasone, 5 mg PGF, 1 cc saline; medium, 1.0 mg flumethasone, 10 mg PGF, 2 cc saline; high, 1.5 mg flumethasone, 15 mg PGF, 3 cc saline) and two routes of administration (IM …
Propagation Of Selected Native Prairie Plants By Leaf Tissue Culture, Bernard Erlyn Ellis
Propagation Of Selected Native Prairie Plants By Leaf Tissue Culture, Bernard Erlyn Ellis
Electronic Theses and Dissertations
Preservation of our native prairie has long been neglected while extensive farming practices have reduced the native prairie to isolated areas of untillable land. These diminishing acres of prairie (Jenkins 1971, Tinker 1971) are our remaining link with the stable environment after man has disrupted the landscape to his advantage. The objective of this investigation was to produce plantlets of selected native prairie plants by leaf tissue culture and to eventually establish them in the field. In doing this it was necessary to study the characteristic of each species in both culture and field behavior. Twenty species were selected for …
Soil Salinity, Sodium Levels, And Corn Production As Affected By Rates Of Applied Beef Wastes, James L. Halbeisen
Soil Salinity, Sodium Levels, And Corn Production As Affected By Rates Of Applied Beef Wastes, James L. Halbeisen
Electronic Theses and Dissertations
In order to establish relationships between beef waste application rates on the land and its effect on soil, an experiment was conducted at the Southeast South Dakota Experiment Farm. Beef steers were fed to a finished market weight from approximately 200 kg (441 lb) with a typical beef finishing ration which varied only in sodium chloride content among the treatments and spread at various rates on the soil. The objectives of this investigation were: 1) to establish a beef waste application rate on dryland that will permit crop production without excessive salt or sodium accumulation in the soil and 2) …
Design, Construction And Testing Of An Animal Operated Device For Coordinated Feeding Of Liquid Supplement And Granular Material To Cattle, David B. Goos
Electronic Theses and Dissertations
The objectives of the project were established as follows: 1. Design, develop, and construct an animal operated device to coordinate the feeding of grain and liquid protein supplement of cattle. 2. Test the operation and performance of the feeding device under laboratory and actual feeding conditions. 3. Investigate individual animal participation in the use of the feeding device. 4. Analyze the economic feasibility of the animal operated device compared with current pasture supplementation systems.
Bentonite Or Sodium Bicarbonate In High-Concentrate Lamb Diets, Gerald Bruce Huntington
Bentonite Or Sodium Bicarbonate In High-Concentrate Lamb Diets, Gerald Bruce Huntington
Electronic Theses and Dissertations
A rapid change of ruminants from high-roughage diets, often used in background feeding programs, to high-concentrate diets used in the finishing phase tends to promote various digestive tract disorders. A major change in diets gradually made over a period of 3 to 4 weeks generally allows time for the rumen microflora to become adapted to the new conditions and minimizes digestive problems. However, performance during this period is often unsatisfactory. In the short-term feedlot finishing of ruminants for slaughter, the importance of profitable weight gains during the initial adaptation phase of the feeding period becomes relatively more important. Methods of …
The Effects Of Thyroid Inhibition On Ovarian Function And On Theconcentration Of Estradiol-17b In Reproductive And Pituitary Tissues Of The Golden Hamster / By Larry Marvin Robinson, Larry Marvin Robinson
The Effects Of Thyroid Inhibition On Ovarian Function And On Theconcentration Of Estradiol-17b In Reproductive And Pituitary Tissues Of The Golden Hamster / By Larry Marvin Robinson, Larry Marvin Robinson
Electronic Theses and Dissertations
No abstract provided.
Effects Of Hydrogen Ion Buffers On Photosynthetic Oxygen Evolution In The Blue-Green Alga, Agmenellum Quadruplicatum, Susan Nancy Bridges
Effects Of Hydrogen Ion Buffers On Photosynthetic Oxygen Evolution In The Blue-Green Alga, Agmenellum Quadruplicatum, Susan Nancy Bridges
Electronic Theses and Dissertations
No abstract provided.
A Comparative Study Of Phosphate Measurement In Flood Control Reservoirs In Northern Mississippi, John Armstrong Davis
A Comparative Study Of Phosphate Measurement In Flood Control Reservoirs In Northern Mississippi, John Armstrong Davis
Electronic Theses and Dissertations
No abstract provided.
Pharmacy In Cuba : A Descriptive Study Of The Effect A Change In The Political System From A Democracy To Communism Had On The Profession Of Pharmacy, Raquel Garcia
Electronic Theses and Dissertations
No abstract provided.
A Comparative Study Of 16pf Profiles Of Alcohol Dependents And Social Drinkers : A Discriminant Analysis Approach / By William Harry Replogle, William Harry Replogle
A Comparative Study Of 16pf Profiles Of Alcohol Dependents And Social Drinkers : A Discriminant Analysis Approach / By William Harry Replogle, William Harry Replogle
Electronic Theses and Dissertations
No abstract provided.
Effects Of Land Disposal Of Pulp Mill Effluents On Plant Nutrient Uptake And Element Balance, Joseph B. Schwarzback
Effects Of Land Disposal Of Pulp Mill Effluents On Plant Nutrient Uptake And Element Balance, Joseph B. Schwarzback
Electronic Theses and Dissertations
An analysis of the soil and plant tissues was undertaken to ascertain the effect that land irrigation with pulp mill effluent has on nutrient uptake and element balance of tree seedlings. Results show that the effluent significantly increased the sodium content of both soil and tissue; however, these levels fell far below the level necessary to become detrimental to plant life, soil chemistry and soil structure. There was evidence that the increase of elements from the effluent provided positive effects in growth and plant health. There was no evidence of sodium toxicity or calcium starvation. Evidence clearly points out the …
Sulfur Supplementation With Soybean Meal Or Urea For Feedlot Lambs, Joseph Cletus Ebert
Sulfur Supplementation With Soybean Meal Or Urea For Feedlot Lambs, Joseph Cletus Ebert
Electronic Theses and Dissertations
One of the urgent tasks facing agricultural scientists throughout the world is that of supplying sufficient food of adequate quality to the ever-increasing human population. The problem is not only that of supplying calories but also providing adequate quantity and quality of protein. Ruminant animals have the ability to convert much plant energy, not utilizable or having low availability for man, and nonprotein nitrogen products into body tissues. Ruminant animals, therefore, can have a very important role in providing food for the human population. The most widely used nonprotein nitrogen compounds urea. The process of building amino acids into body …
Energy Sources In Starter Diets For Early Weaned Pigs, Leon Jon Reiner
Energy Sources In Starter Diets For Early Weaned Pigs, Leon Jon Reiner
Electronic Theses and Dissertations
The swine industry is largely dependent upon feed grains as major dietary ingredients because of the very limited ability or the pig to utilize roughages. The dependence upon feed grains puts the pig in direct competition with humans for available food supplies. Grains are an excellent source of carbohydrate but in general are a poor supplier or protein. Raising the level and quality or protein in corn and oats wou1d be of great economic and nutritional value. New uses of high protein ingredients, which were once used as supplementa1 protein for swine, are continually being implemented to help meet the …
Physiological Responses Of Holstein Steer Calves To Winter Climatic Conditions, Jay A. Runestad
Physiological Responses Of Holstein Steer Calves To Winter Climatic Conditions, Jay A. Runestad
Electronic Theses and Dissertations
When a warm-blooded animal, homeotherm, is subjected to an environment colder than body temperature, according to the physical laws of heat and mass transfer, heat dissipation from the animal will be increased. Left unchecked the body temperature will drop, homeothermia, possibly resulting in death. The animal compensates for this heat loss by increasing heat production and/or reducing heat loss by a number of chemical or physical adjustments. One such adjustment is vasoconstriction, which reduces blood flow to the surface, thereby, reducing the temperature of the skin and extremities, with peripheral temperatures of some homeotherms dropping to slightly above freezing without …
Storage Quality Measurements Of Two Large Hay Packages, Ronald Eugene Schrempp
Storage Quality Measurements Of Two Large Hay Packages, Ronald Eugene Schrempp
Electronic Theses and Dissertations
Forage evaluation for utilization by ruminants can be made by several methods. The conventional in vivo digestibility trials, in vitro dry matter digestibility methods and a number of chemical component analyses have been tested quite extensively in the last 25 years. The in vivo digestibility trial has been the traditional method for feed evaluation, but performance of such a trial is costly and tedious and the resulting total digestible nutrients or digestible energy values have been criticized as being an incomplete measure-of feed value. There are many laboratory feed analyses methods available today. However, in vitro digestibility data have been …
Effects Of Fungus-Fermented Soybeans On Broiler Growth And Life Cycle Performance Of Coturnix Quail, Cheong Choo Chah
Effects Of Fungus-Fermented Soybeans On Broiler Growth And Life Cycle Performance Of Coturnix Quail, Cheong Choo Chah
Electronic Theses and Dissertations
Despite the extensive data that have accumulated on the detrimental effect of molds on the growth of farm animals, very little is known as to the beneficial role of fungi in animal feed. Recent studies at South Dakota State University research laboratories revealed, however, that only 164 of 392 strains of Aspergilli were found to be toxic. When the cultures were grown on sterile soybeans or wheat, some of the tested cultures exerted positive effects on growth of chicks and mice. Hence, the investigations reported herein were initiated to obtain further information on those cultures beneficial to chick performance and …
Quantitative Gene Action And Interrelationships Of Protein Content With Some Metrical Traits Of Oats, Harbans Singh Sraon
Quantitative Gene Action And Interrelationships Of Protein Content With Some Metrical Traits Of Oats, Harbans Singh Sraon
Electronic Theses and Dissertations
The objectives of this study were (a) to determine gene action, heritability and number of effective factors controlling protein content in oats, (b) to investigate the interrelationships of protein content with other agronomic characters, and (c) to evaluate the feasibility of utilizing A. sterilis germplasm in oat breeding projects. Four genetically distinct cultivars with protein content ranging from 15.7 to 26.6 percent were crossed in all possible combinations to make a complete set of diallel crosses. The data suggested additive gene action and partial dominance for protein content. Groat percentage and number of panicles showed overall partial dominance. Yield and …
In Vitro And In Vivo Evaluation Of Protecting Whey Protein Concentrate For Ruminants, David Rodriguez Maltos
In Vitro And In Vivo Evaluation Of Protecting Whey Protein Concentrate For Ruminants, David Rodriguez Maltos
Electronic Theses and Dissertations
In experiment I a series of in vitro buffer and rumen fermentation studies were conducted to evaluate protein solubility at pH 6.8 and pH 2.5 (with pepsin) and ammonia production from whey protein concentrates (WPC, 55% protein) treated with 0, .25, .5, 1.0, and 3% formaldehyde; 1, .5, 1.0, 2.0, 3.0, and 6% tannic acid; and 0, 1, 2, and 3 hr of heat treatment at 104 C. Protein solubility and ammonia production from casein treated with 0, .5, 1.0, and 3% formaldehyde and 0, .5, 1.0, and 3% tannic acid were also studied. All levels of formaldehyde treatment of …