Digital Commons Network^™

The Morphological, Anatomical, And Histochemical Effects Of Eptc On Oat Seedlings, Jacinta Yu-Rui Lee

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Morphological, anatomical, and histochemical effects of S-ethyl dipropylthiocarbamate (EPTC) on Avena sativa var. overland were studied after treatment of seeds at various EPTC concentrations.

The oat seed germination percentage was not affected by EPTC treatment. EPTC delayed initial root and coleoptile development at all concentrations used. Two or three days after treatment, however, the roots of seedlings treated with EPTC concentrations lower than 3 ppm grew at the same rate as the untreated seedlings and showed no abnormalities. Primary and adventitious root growth of seedlings treated with 3 ppm and higher was inhibited. Most of the adventitious roots remained in …

Hereford And Holstein Steer Performance On High Grain Diets With And Without Corn Silage, Cyril Bruce Russell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A factorially designed experiment had 18 Hereford and 18 Holstein steers on individually fed, high-grain diets. One diet included 59% rolled barley, 30% CSF beet pulp, 5% protein, vitamin, mineral, and stilbestrol supplement, and 6% chopped hay and straw. The other diet had corn silage (11% air dry matter equivalent) substituted for the chopped roughage and 5% of the beet pulp. The Holsteins were heavier at the start, 752 lb. as compared to the Herefords 686 lb. average. The weight differential was maintained throughout the approximately 180-day trial. The Holstein's feed consumption and rate of gain, 23.4 and 2.71 lb. …

Drift Of Oligophlebodes Sigma And Baetis Bicaudatus In A Mountain Stream, William Dean Pearson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The objective of this study was to clarify the relationships between drift rates, population density, production rates, key environmental factors, and movements of adults within two populations of stream insects (a caddisfly--Oligophlebodes sigma and a mayfly--Baetis bicaudatus).

Samples of benthic invertebrates (424 total) were collected every 28 days at four stations on Temple Fork of the Logan River, Utah, from October, 1967 to September, 1969. Samples of drift invertebrates (181 total) were collected every 14 days at three stations on Temple Fork during the same period. During summer months (June-September) a day and a night drift sample …

Vocational Agricultural Curriculum Study In Utah County, Loren J. Phillips

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A questionnaire containing 69 curriculum areas for a vocational agricultural program in Utah County, Utah, and a proposed rating scale was mailed to 720 students who had graduated in vocational agriculture from eight high schools; to 14 agricultural teachers, and to 22 secondary school administrators and supervisors from Utah County; and to 28 other agricultural teachers selected at random in the state. Each person was asked to evaluate each curriculum area according to four suggested rating values: no value, has value, recommended, or essential.

The rating from each respondent was tabulated for each curriculum area by total points by numerical …

Selected Physio-Chemical, Microbiological, And Agronomical Studies On The Controlled Atmosphere Storage Of Sugarbeet (Beta Vulgaris) Roots, Vinod V. Karnik

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The post-harvest physiology of sugarbeet (Beta vulgaris) roots was studied during controlled atmosphere (CA) storage at 35° and 50°F. Zero, 3, 6 and 10% carbon dioxide and 5% oxygen concentrations were employed to investigate the most beneficial concentrations of gases. Under the experimental conditions beets were stored successfully for 200 days. The maximum beneficial effects of CA were observed under 6% carbon dioxide and 5% oxygen at 35°F. Regardless of storage temperatures, sucrose retention was highest in the beets stored under CA, compared to conventional refrigeration (CR). Other beneficial effects include less hydrolysis of sucrose to reducing sugars …

An Investigation Of The Mode Of Action Of 2-Chloro-N-Isopropylacetanilide, Nirmal S. Dhillon

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Corn (Zea mays L.) seedlings possessed a high degree of tolerance to growth inhibitory effects of pre-emergent application of 2-chloro-N-isopropylacetanilide (propachlor), squash (Cucurbita maxima Duchesne) was intermediate in its response to the herbicide followed by oats (Avena sativa L.), lambsquarters (Chenopodium album L.) and redroot (Amaranthus retroflexus L.). Root growth was more severely retarded by lower concentrations of propachlor than was stem development.

Propachlor inhibited cell division in onion (Allium cepa L.) root tips. Aberrations in the mitotic behavior, such as contraction of chromosomes, was also induced. Cell elongation, in particular auxin …

Growth Of Eimeria Alabamensis From Cattle In Vitro And The Changes In Fine Structure Associated With Schizogony, J. Robert Sampson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Monolayer primary cultures of cells from bovine embryonic intestine (BEint), kidney (BEK), spleen (BES), and thyroid (BET) and cell line cultures of embryonic bovine trachea ( EBTr) and synovium (BESy)as well as established cell line cultures of Madin-Darby bovine kidney (MDBK), human intestine (Int 407), and Syrian hamster kidney (BHK-21) were inoculated with freshly excysted sporozoites of Eimeria alabamensis and observed for 4 days. Sporozoites penetrated all cell types during the first 24 hours in culture. Numerous intracellular sporozoites, trophozoites, and binucleate schizonts were seen in all cell cultures except Int 407. The best development occurred in BES and MDBK …

The Evolution Of Parasitism Among Bees, George E. Bohart

Faculty Honor Lectures

Before discussing parasitic bees, I will present a rough outline of the biology of "ordinary" or non-parasitic bees. The superfamily Apoidea (bees) includes perhaps 25,000 or 30,000 species divided into nine families by recent authorities (Stephen, Bohart, Torchio, 1969) . A common biological thread holding this vast assemblage together is the provision by adults of pollen and nectar for their young. Only in the honey bees (the genus Apis which includes four species) are the larvae fed primarily on a different substance (a secretion of the pharyngeal glands) , and even this is derived from pollen and honey eaten by …

Evaluating Economic Efficiency By Relative Price Analysis (Feed, Livestock And Product Sectors), J. Y. Chen, J. B. Hassler

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The specific objective of this research is to delineate efficient and inefficient economic performance areas and thereby locate the more significant problem aspects for research and program attention. Specific price analyses will be used to evaluate the price interrelationships for functional efficiency in the dimensions of space, form and time. Not only the efficient aspects of production and marketing will be indicated by the analyses but the inefficient aspects of economic performance will be stressed also. This research will provide some foundational information for making decisions, both public and private. Moreover, it will direct the attention of researchers or program …

Agricultural Experiment Station News April 1970

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTORS OFFICE
THE NEW SOUTH CENTRAL STATION
PERSONNEL ACTIONS
GENERAL NOTES
GRANTS AND CONTRACTS
AGRICULTURAL EXPERIMENT STATION PUBUCATIONS - April 1970

Louisiana Agriculture Magazine, Spring 1970, Lsu Agricultural Experiment Station

Louisiana Agriculture

No abstract provided.

1970 Little International Agricultural Exposition Catalog, Little International Agricultural Exposition South Dakota State University

Little International "Little I" Agricultural Exposition Catalogs

No abstract provided.

Agricultural Experiment Station News March 1970

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S DESK
STAFF PROMOTIONS - 1970
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS – March 1970
BULLETINS PRINTED

Growth In Weight Of Selected Organs, Tissues And Systems In The Pig, William J. Loeffel, Robert M. Koch

Nebraska Agricultural Experiment Station: Historical Research Bulletins

As a result of investigations at the Nebraska Agricultural Experiment Station in 1929, 1930 and 1931 to determine the effect of weight and degree of fatness of the pork carcass upon the quality and palatability of the meat, 40 pigs were slaughtered, five each at the approximate live weights of 70, 80, 90, 100, 115, 135, 160, and 180 kg. This corresponds to carcass weights ranging from 50 to 150 kg. The results of the meat investigations and feedlot data were reported elsewhere (Loeffel et al.,1943). This study reports data relative to the weight of selected tissues and organs, as …

83rd Annual Report Of The Nebraska Agricultural Experiment Station

Agricultural Research Division: News and Annual Reports

Contents:
Foreword
Administration and Staff
Nebraska Agricultural Experiment Station Research Projects
Experiment Station Publications
Publications of the Staff
Report of Income and Expenditures

Agricultural Experiment Station News February 1970

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR'S OFFICE
DEPARTMENTAL REPORTS
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
AGRICULTURAL EXPERIMENT STATION PUBLICATIONS- February 1970
BULLETINS PRINTED

Feeding Urea To Cattle, D J. Barker

Journal of the Department of Agriculture, Western Australia, Series 4

RUMINANTS normally obtain the protein they require by digestion of the organisms that inhabit the forestomach (rumen), not by direct digestion of the dietary protein they chew up and swallow.

The organisms break down the dietary protein and then rebuild proteins in the form of more organisms.

Rearing Orphan Kangaroos, G L. Ward

Journal of the Department of Agriculture, Western Australia, Series 4

LICENCES are required in Western Australia if certain kangaroos and all species of wallabies are kept in captivity, but orphaned young joeys often need care and hand feeding before they can be released to fend for themselves.

Reports - 1970 (Full Report), International Biological Program

Reports

No abstract provided.

The Evolution Of Parasitism Among Bees, George E. Bohart

All PIRU Publications

No abstract provided.

Attendance Report: Small Mammal Workshop, Clive D. Jorgensen

Memorandum

No abstract provided.

Rationing Standing Crops To Sheep, H E. Fels

Journal of the Department of Agriculture, Western Australia, Series 4

This experiment was done at Merredin Research Station to develop and test a method of rationing standing crops to sheep, and also to find whether rationing would reduce the sheep's water consumption.

The experiment involved 60 sheep on 12 one-acre plots of drought affected Gamenya wheat.

Surplus Cereal Crops For Sheep Feed, H E. Fels

Journal of the Department of Agriculture, Western Australia, Series 4

SINCE the introduction of wheat quotas many farmers have considered feeding unsaleable grain to sheep.

The three alternative methods of feeding this grain to sheep are

• as standing crops

• as grain supplements, fed in the paddock

• as grain plus hay, in a feedlot.

Influence Of Urea On The Fermentation Pattern & Nutritive Value Of Corn Silage, John Shirley

Masters Theses & Specialist Projects

The effects of chemical additives on the fermentation pattern and subsequent feeding value of corn silage was investigated over a two year period. Corn plants harvested in August 1967 (Experiment I) were ensiled with no additive, 3.50 per cent area, or urea-mineral mix supplying an equal amount of urea. Those harvested in August 1968 (Experiment II) were ensiled with no additive, 0.50 per cent urea, or 0.75 per cent urea. The nutritive value of these silages was evaluated chemically and by lactation trials.

:he addition of urea alone, or in combination with minerals elevated the initial pH and buffered against …

Crop Rationing : A Useful Drought Feeding Technique, H E. Fels

Journal of the Department of Agriculture, Western Australia, Series 4

A TRIAL carried out during the 1969 drought demonstrated that rationing standing crop is a practical method of feeding it to sheep when feed is scarce.

Rationing will be mainly a drought feeding technique for that part of the crop which will definitely be used as sheep feed. Crop that may or may not be needed for sheep would normally be harvested and the grain kept as a contingency allowance.

Agricultural Experiment Station News January 1970

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE DIRECTOR’S DESK
TRAVEL EXPENSES
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GENERAL NOTES
AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - January 1970
BULLETINS PRINTED

Some Observations On Ecto- And Endoparasites Of Chiroptera, John E. Ubelaker

Fondren Science Series

The various groups of organisms associated with bats have caught the interest of many investigators. Noteworthy is the review by Stiles and Nolan (1931) in which all known parasites of bats were listed. Allen (1939) presented a general introduction to the parasites of bats in which he emphasized the arthropods. Other references to parasites of bats are concerned with particular groups. In this paper I hope to acquaint the reader with these groups and to indicate some of the interesting relationships that have been elucidated. The tremendous number of papers published concerning organisms associated with bats precludes the inclusion of …

Caste Regulation In The Termite, Neotermes Jouteli (Banks), Richard David Nagin

Student Theses and Dissertations

The southern Florida termite Neotermes jouteli (Kalotermitidae) was found to provide exceptionally suitable material for the study of caste regulation, with special reference to the regeneration of reproductive forms. It was possible to collect entire natural colonies of this termite, including the reproductive pair, and to maintain them for long periods in the laboratory. In this way the characteristics of individual colonies could be studied in a way not done in most earlier work on caste regulation. Most interesting was the finding that the capacity to regenerate lost reproductive forms was a characteristic of individual colonies. By removing groups of …

High Pre-Mating Liveweights Improve The Lambing Performance Of Merino Ewes, R J. Suiter

Journal of the Department of Agriculture, Western Australia, Series 4

Analysis of lambing trials with Merino ewes has shown a highly significant association between pre-mating liveweight and lambing performance.

With May-June lambing ewes there was a 2.9 per cent, lambing increase for every extra 10 lb. liveweight; for July-August- September lambing ewes there was a 6.9 per cent, increase for every 10 lb. liveweight increase.

With the May-June lambing there was a critical weight below which twinning was negligible.

Supplementing Calves With Tallow : Results Of A Trial At Wokalup Research Station, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

THE removal of butterfat from milk by separation, reduces the energy content of the milk by about 50 per cent., and must slow the growth of calves unless extra energy is provided from some other source.

In the dairying districts of Western Australia, there has been considerable interest in recent years in the addition of homogenised tallow to skim milk to provide extra energy.

Good calves have been produced by this means.