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Animal Sciences

1962

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Articles 1 - 30 of 129

Full-Text Articles in Life Sciences

The Availability Of Phosphorus In Two Defluorinated Phosphates To Sheep As Determined By A Radioisotope Technique, Carlen Pippin Dec 1962

The Availability Of Phosphorus In Two Defluorinated Phosphates To Sheep As Determined By A Radioisotope Technique, Carlen Pippin

Masters Theses

[From the Introduction]

Phosphorus deficiency has limited livestock production since the beginning of recorded history. This is understandable in view of the essentiality of phosphorus to various life processes and of the problems of providing adequate amounts of available phosphorus in rations for livestock.

One of the best known functions of phosphorus is its importance in building bones and teeth. Also, it has an equally important function in every living cell of the body. It is essential for the utilization and metabolism of the other nutrients such as proteins, fats, and carbohydrates. Muscles cannot grow and divide, and cells cannot ...


Kentucky Warbler (Vol. 38, No. 4), Kentucky Library Research Collections Nov 1962

Kentucky Warbler (Vol. 38, No. 4), Kentucky Library Research Collections

Kentucky Warbler

No abstract provided.


Nebraska Bird Review (October 1962) 30(4), Whole Issue. Oct 1962

Nebraska Bird Review (October 1962) 30(4), Whole Issue.

Nebraska Bird Review

Table of Contents

Thirty-Seventh Annual Cooperative Spring Migration and Occurrence Report......................................... 54

Index To Volume XXX ......................................... 74


Kentucky Warbler (Vol. 38, No. 3), Kentucky Library Research Collections Aug 1962

Kentucky Warbler (Vol. 38, No. 3), Kentucky Library Research Collections

Kentucky Warbler

No abstract provided.


Respiration, Electron-Transport Enzymes, And Krebs-Cycle Enzymes In Early Developmental Stages Of The Oyster Crassostrea Virginica, Robert E. Black Aug 1962

Respiration, Electron-Transport Enzymes, And Krebs-Cycle Enzymes In Early Developmental Stages Of The Oyster Crassostrea Virginica, Robert E. Black

VIMS Articles

A marked increase in the rate of respiration during early development has been noted in many different organisms (see Brachet, 1950 ; Boell, 1955). In most cases the changes in respiratory enzymes which might contribute to the respiratory increases have not been fully studied. Of particular interest in this connection are studies which have dealt with enzymes of the tricarboxylic acid (citric acid) cycle, as well as those investigations of the enzymes involved in the transfer of electrons between substrates and oxygen, via the systems which oxidize reduced pyridine nucleotides and succinic acid.


The Concentrations Of Some Enzymes Of The Citric Acid Cycle And Electron Transport System In The Large Granule Graction Of Eggs And Trochophores Of The Oyster, Crassostrea Virginica, Robert E. Black Aug 1962

The Concentrations Of Some Enzymes Of The Citric Acid Cycle And Electron Transport System In The Large Granule Graction Of Eggs And Trochophores Of The Oyster, Crassostrea Virginica, Robert E. Black

VIMS Articles

In an accompanying report Black (1962) has shown that considerable changes in the relative activities of several enzymes of the tricarboxylic acid cycle occur during early development of the oyster. Thus, between the blastula and trochophore stages two enzymes, TPN-specific isocitric dehydrogenase and aipha-keto glutaric dehydrogenase, increase 2- to 3-fold, roughly paralleling the increase in respiration during this same period. Five other enzymes were found not to change appreciably during development to the trochophore. These were: aconitase, succinic dehydrogenase, malic dehydrogenase, DPNH oxidase, and cytochrome oxi dase. Following the trochophore stage cytochrome oxidase decreased somewhat in activity, while the other ...


The Blue Crab And Its Fishery In Chesapeake Bay Part 2 - Types Of Gear For Hard Crab Fishing, W. A. Van Engel Aug 1962

The Blue Crab And Its Fishery In Chesapeake Bay Part 2 - Types Of Gear For Hard Crab Fishing, W. A. Van Engel

VIMS Articles

During the 90-year history of the Chesapeake Bay blue crab fishery, many types of fishing devices were tried, but only pots, trotlines, and dredges proved suitable, and they emerged as the primary types of gear for catchfng hard crabs. In the early years of the fishery, trotlines with their various modifications were used princip~lly for catching hard crabs in the summer. The Chesapeake Bay crab pot, patented in 1938 and modified only slightly since, gradually replaced the trotline. Pots now account for two-thirds of the Virginia hard crab catch and more than half of the Maryland catch, The dredge ...


Nebraska Bird Review (July 1962) 30(3), Whole Issue. Jul 1962

Nebraska Bird Review (July 1962) 30(3), Whole Issue.

Nebraska Bird Review

Table of Content

The Status of Wild Turkeys in Nebraska .......................... 34

Extinct Birds .......................... 35

Four Report of Fall Records, 1961 .......................... 41

General Notes .......................... 49

Meetings and Reports.......................... 50

Hawks and Owl Laws .......................... 51


Quantitative Study Of Growth Of Some Dairy Psychrophiles, Taher A. El-Farekh Jun 1962

Quantitative Study Of Growth Of Some Dairy Psychrophiles, Taher A. El-Farekh

Masters Theses

Summary and Conclusions:

Samples of pasteurized skim milk were steamed for 25 minutes at approximately 100° C. and inoculated with pure cultures of Pseudomonas fluorescens, A and B, at different levels, Pseudomonas fragi, Brevibacterium lipolyticum. The fifth culture was the normal flora of commercially pasteurized skim milk treated as a pure culture. All samples were stored at 4° C. Bacterial growth was determined using agar plates incubated at 25° C. for 3 days.

The generation time was calculated for all cultures which ranged from 5.55 hours for Pseudomonas fragi to 11.24 hours for Brevibacterium lipolyticum. The generation time ...


B606: An Economic Study Of The Beef Cattle Industry In Maine, Dean F. Tuthill, John A. Graffam May 1962

B606: An Economic Study Of The Beef Cattle Industry In Maine, Dean F. Tuthill, John A. Graffam

Bulletins

This study was designed to determine the nature and location of the beef cattle industry of Maine, to investigate its economic aspects and to ascertain the conditions under which a beef enterprise would most likely succeed. This information should be useful to both present and prospective beef enterprise operators.


Kentucky Warbler (Vol. 38, No. 2), Kentucky Library Research Collections May 1962

Kentucky Warbler (Vol. 38, No. 2), Kentucky Library Research Collections

Kentucky Warbler

No abstract provided.


Group Grain Feeding Versus Individual Grain Feeding Of Lactating Dairy Cows, Earl Max Sudweeks May 1962

Group Grain Feeding Versus Individual Grain Feeding Of Lactating Dairy Cows, Earl Max Sudweeks

All Graduate Theses and Dissertations

Grain feeding is an important part of a dairy feeding program. Grain supplies energy in a concentrated form and when fed as a supplement to forage permits cows to maintain high levels of production. Also, if the forage is of low quality, additional protein and other nutrients can be supplied with the grain in a concentrate mix. By feeding a balanced concentrate mix, according to individual production, each cow receives the necessary nutrients for production. Dairy cows are usually fed grain individually.

During recent years dairy herds have increased in size and milking parlors have been developed in which to ...


A Study Of The Use Of The Hydrogen Peroxide-Catalase Treatment Of Milk In The Manufacture Of A Reduced Fat, Cheddar-Like Cheese, Lamar John Johnson May 1962

A Study Of The Use Of The Hydrogen Peroxide-Catalase Treatment Of Milk In The Manufacture Of A Reduced Fat, Cheddar-Like Cheese, Lamar John Johnson

All Graduate Theses and Dissertations

Nutritionists, the medical profession, and the public in general have become increasingly interested in low fat food products. Cheddar cheese, as it is now made, has a high caloric value and therefore may be discriminated against in some diets. The production of a reduced fat cheddar-like cheese would be of importance to the cheese industry by providing a reduced fat, high protein product.

The chemical nature of the casein furnishes the foundation for the body and texture in cheese. The body and texture of typical cheddar cheese is influenced principally by its fat and moisture content.

The use of hydrogen ...


A Study Of The Effects Of Acidity On Shelf Life And Type Of Spoilage In Market Milk, Jagannath M. Kudale May 1962

A Study Of The Effects Of Acidity On Shelf Life And Type Of Spoilage In Market Milk, Jagannath M. Kudale

All Graduate Theses and Dissertations

The addition of the Streptococcus lactis culture in the pasteurized milk was studied, in an attempt to find the effects of the culture in prolonging shelf life of the milk. Various concentrations of the culture were tried to find the optimum concentration that would give favorable effect on keeping quality of the milk. It was found that the addition of Streptococcus lactis culture at the rate of 0.0001 percent has shown promising effects in prolonging shelf life of the milk at the storage temperature of 40 F.

In addition to the above study, effects of added acid in the ...


Factors Affecting The Waterfowl Hunter Utilization And The Waterfowl Kill At The Bear River Migratory Bird Refuge, 1960-61, Stephen V. Goddard May 1962

Factors Affecting The Waterfowl Hunter Utilization And The Waterfowl Kill At The Bear River Migratory Bird Refuge, 1960-61, Stephen V. Goddard

All Graduate Theses and Dissertations

With the goal of obtaining the maximum utilization of areas now open to public hunting in mind, a study was conducted at the Bear River Migratory Bird Refuge during the 1960 and 1961 waterfowl hunting seasons. The study had the following main objectives: 1) determine the level of utilization of the refuge by water fowl hunters including determining the factors which affect the utilization of various areas of the refuge, determining the factors and their influence on the kill composition in the various areas and the entire refuge, and obtaining quantitative and qualitative information on hunter population and the use ...


Influence Of Age On Milk Production Of Holstein Cows In Utah, Marvin R. Green May 1962

Influence Of Age On Milk Production Of Holstein Cows In Utah, Marvin R. Green

All Graduate Theses and Dissertations

Production of dairy cows is influenced by many factors, among which are: genetics, nutrition, management, disease and age. Most of these factors can be modified to maintain a high level of production. Age, however, is beyond the influence of mankind; therefore, it is important to understand the effect of age on milk and butter-fat production.


Animal Husbandry Through The Years At The University Of Nebraska, William J. Loeffel Apr 1962

Animal Husbandry Through The Years At The University Of Nebraska, William J. Loeffel

Animal Science Department News

From the establishment of the Agricultural College in 1872 to the present day (1962).

Foreword
Introduction
The Agricultural College
The Crowning Years
The Research Program
Farmers Institutes
Extension Activities
Emergency Programs
Extra Curricular Activities
Personnel
Publications

This review is limited primarily to the Animal Husbandry Department. However, in an organization as closely knit as the College of Agriculture, it is impossible not to make occasional reference to other departments and activities. The narrative is confined largely to the organization at Lincoln, although some reference is made of work and workers at outlying stations.

52 pages


Whole Issue Nebraska Bird Review (April 1962) 30(2) Apr 1962

Whole Issue Nebraska Bird Review (April 1962) 30(2)

Nebraska Bird Review

TABLE OF CONTENTS

Birding Areas Near Aurora....................18

The Incidence of Nest Parasitism by the Brown-headed Cowbird....................20

Annual Winter Meeting....................23

Nesting Report, 1961....................24

Dr. Ralph W. Dawson....................28

General Notes....................29

Excerpts from Letters....................30

Nature Music and Surprises in Winter....................30

Treasurer's Report....................31

Book Reviews....................32


The Tennessee Beef Performance Testing Program In Robertson County, Craig Watson Mar 1962

The Tennessee Beef Performance Testing Program In Robertson County, Craig Watson

Masters Theses

(From Introduction)

A program for the performance testing of beef cattle in Tennessee was instigated in 1956 by the Extension Animal Husbandry Department and the Animal Husbandry-Veterinary Science Department of The University of Tennessee. In various meetings over the state with the extension personnel, the members of the Robertson County Livestock Association and the Agriculture Extension Agent in Robertson County became interested in this production testing program. Since Robertson County is a growing beef cattle county, performance testing beef herds in the county to determine the rate of gain and the quality of calves that were produced seemed advisable. In ...


The Possibility Of The Existence Of Mimicry Between Two Species Of Southern Appalachian Salamanders, Lowell Preston Orr Mar 1962

The Possibility Of The Existence Of Mimicry Between Two Species Of Southern Appalachian Salamanders, Lowell Preston Orr

Doctoral Dissertations

A study was conducted in the Great Smoky Mountains National Park to determine the validity of the mimicry hypothesis which has been proposed to explain the resemblance between red-cheeked color variants of Desmognathus ochrophaeus carolinensis and Plethodon jordani jordani, the red-cheeked salamander. Five basic rules of mimicry were tested in both field and laboratory approaches to the problem.

The color patterns of carolinensis were recorded in 587 individuals observed. Of this number, 25.7 per cent displayed some cheek coloration which included color variations of red to orange, yellow, and white. Red to orange cheek colors were found in 92 ...


Kentucky Warbler (Vol. 38, No. 1), Kentucky Library Research Collections Feb 1962

Kentucky Warbler (Vol. 38, No. 1), Kentucky Library Research Collections

Kentucky Warbler

No abstract provided.


Front Matter, Vol. 2 No. 1 Feb 1962

Front Matter, Vol. 2 No. 1

Brigham Young University Science Bulletin, Biological Series

No abstract provided.


End Matter, Vol. 2 No. 1 Feb 1962

End Matter, Vol. 2 No. 1

Brigham Young University Science Bulletin, Biological Series

No abstract provided.


A Comparative Study Of The Species Of The Genus Crotaphytus Holbrook (Iquanidae), Wilbur Gerald Robison Jr., Wilmer W. Tanner Feb 1962

A Comparative Study Of The Species Of The Genus Crotaphytus Holbrook (Iquanidae), Wilbur Gerald Robison Jr., Wilmer W. Tanner

Brigham Young University Science Bulletin, Biological Series

The anterior musculature of C. wislizeni and C. collaris is described in detail and compared. Size and number relationships of the skull and its component bones, the sternum, the clavicle, the parts of the hyoid, the general body form, certain scales and teeth, and the eggs per clutch were determined for large samples of both species and then statistically compared. The general character of many structures is also compared and notes are made on C. reticulatus.

The differences encountered by this study, as well as the valid ones of those listed by Smith (1946:158–159) are not considered to ...


Animal Husbandry Through The Years At The University Of Nebraska, 1910-1962, William J. Loeffel, Marvel L. Baker, Vincent H. Arthaud Jan 1962

Animal Husbandry Through The Years At The University Of Nebraska, 1910-1962, William J. Loeffel, Marvel L. Baker, Vincent H. Arthaud

Animal Science Department News

CONTENTS
Foreword
Introduction
The Agricultural College
The Crowning Years
The Research Program
Farmers Institutes
Extension Activities
Emergency Programs
Extra Curricular Activities
Personnel
Publications

This review is limited primarily to the Animal Husbandry Department. However, in an organization as closely knit as the College of Agriculture, it is impossible not to make occasional reference to other departments and activities. The narrative is confined largely to the organization at Lincoln, although some reference is made of work and workers at outlying stations.
Many references are made to These Fifty Years by R. P. Crawford. Through the courtesy of the Comptroller, Dr. Joseph ...


Block And Bridle Annual, 1962 Jan 1962

Block And Bridle Annual, 1962

Block & Bridle Student Organization

Contents:

Dedication
Picture of club members
Roster of Members and Club Officers
Block and Bridle Club Advisor
Animal Husbandry Faculty
Picture of Animal Husbandry Building
Sample Minutes
Financial Statement
Committee Assignments
Merit Trophy Award
Calendar of Events
Initiation
Purebred Ewe Sale
Holiday Ham Sale
Block and Bridle Social
Showmanship Contest
Block and Bridle Club Jackets
Block and Bridle Club Tour
Intracollegiate Judging Contest
Feeders Day
Honors Banquet
Science in Agriculture Day
Quarterhorse Show
Block and Bridle Meat Judging Contest
Election of Officers
Block and Bridle Club Picnic
Senior Livestock Judging Team
Junior Livestock Judging Team
Meats Judging Team


Review Of Sex Ratios And Age Ratios In North American Dncks, Paul A. Johnsgard Jan 1962

Review Of Sex Ratios And Age Ratios In North American Dncks, Paul A. Johnsgard

Papers in Ornithology

This bulletin is by far the most elaborate and comprehensive of any of the publications dealing with waterfowl age and sex ratios that have appeared to date, and represents the presentation and analysis of sex and age ratio data accumulated by the Illinois Natural History Survey over the last 24 years. The several people concerned are to be congratulated for bringing this material into publishable form, and it is commendable that the National Science Foundation undertook the printing costs of this extensively tabulated and illustrated bulletin.


Evaluation Of Sires Available Through Planned Mating, L. Dale Van Vleck, C. R. Henderson, H. W. Carter Jan 1962

Evaluation Of Sires Available Through Planned Mating, L. Dale Van Vleck, C. R. Henderson, H. W. Carter

Faculty Papers and Publications in Animal Science

There is some concern that methods of sire evaluation which utilize contemporary stablemate averages can be biased by differential genetic merit of the mates of these sires. A little reflection, however, indicates that even if the cows to which some sires are mated are more highly selected than the mates of other sires, this differential merit will not affect seriously the ranking of sires according to the evaluation of their progeny. Until the present, data have not been readily available with which to study the seriousness of this problem. The present study does not deal with the question generally, but ...


Influence Of Vitamin B6 Deficiency On Selected Aspects Of Metabolism In The Chick , Nuhad Joseph Daghir Jan 1962

Influence Of Vitamin B6 Deficiency On Selected Aspects Of Metabolism In The Chick , Nuhad Joseph Daghir

Retrospective Theses and Dissertations

No abstract provided.


Blood Plasma Free Amino Acid Studies In Swine , Francisco Puchal Jan 1962

Blood Plasma Free Amino Acid Studies In Swine , Francisco Puchal

Retrospective Theses and Dissertations

No abstract provided.