Dairy Science Commons^™

The Use Of Lactic Acid In The Manufacture Of Cheddar Cheese From Milk Containing An Antibiotic, Elmer George Jr.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The manufacture of cheddar cheese is greatly dependent on bacterial growth for acid production. The quality of cheese depends upon the type and extent of microbial activity.

An important function of the lactic fermenting bacteria is the production of acid resulting from cellular metabolism. If little or no acid is production of acid resulting from cellular metabolism. If little or no acid is produced the resulting cheese will have an inferior body, flavor, and texture and may even cause the cheese to be used as grinders.

Effects On Urinary Metabolites Of Rats Fed Various Edible Fats, Cleve R. Winkel

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

For many years, substitutes for butterfat have been the subject of much controversy. Their acceptance as being nutritionally equal to butterfat has often been question. The importance of this problem lies primarily in its economic and nutritional significance.

A recent study of public attitudes toward dairy products conducted by Alfred Politz Research, Inc. for the American Dairy Association, shows that 48.4 per cent of the population believed that butter is a more nutritions food than oleomargarine. Only 6 per cent thought that oleomargarine is more nutritious while 27.2 per cent believed they are about the same. The remainder, 18.4 per …

Use Of Corn Syrup Solids Of Different Dextrose Equivalents In The Manufacture Of Frozen Desserts, Wiggo F. Axelgard

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The ice cream industry continually faces the problem of improving its frozen desserts. At the present time corn syrup solids are being used to supplement milk serum solids to improve the body and texture of these products.

One of the problems is to increase the total solids content of frozen desserts without increasing sweetness or developing sandiness in the finished product. There is a limit to the amount of milk serum solids that can be used because of the danger of sandiness and the cost. The use of corn syrup solids helps to overcome these limiting factors.

The corn syrup …

A Comparison Of Formulae In The Manufacture Of Ice Milk, Glen Wilford Sargent

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Ice milk is not a new product in the ice cream industry. Rather it is one that has gained only little popularity, except in the preparation of "malts" and "milk shakes"; however, within the last decade the gallonage of ice milk produced has more than doubled.

Ice milk has been relatively unimportant because of the difficulty of obtaining a product with acceptable quality. In recent years progressive ice milk manufacturers and research workers have discovered new ingredients and processing procedure that seem to produce favorable results.

This low-fat product has several merits that justify its recent popularity, such as low …

The Influence Of Amounts Of Propionibacterium Shermanii On Eye Formation And Flavor Of Swiss Cheese, Dan G. Turner

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Swiss cheese has been rightly called "king of the cheeses." It has been prized the world over for its stately appearance and sweet "hazelnut" flavor. In grading Swiss cheese, these two things,appearance and flavor, are important considerations in determining the cheese score. Appearance is judges according to the number, type, and size of eyes present in the cheese, with color and body and texture also considered. Flavor is judges according to the degree of sweetness and the amount and kinds of off flavors present.

In the past, there has been considerable variation in the quality of the Swiss cheese produces. …

Effects Of Aureomycin In Milk Used For The Manufacture Of Cheese, James A. Banghart

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Importance of project:

In recent years many antibiotics have come to the foreground as a treatment for mastitis. Aureomycin is one of the more recent antibiotics that has been used for this purpose.

Aureomycin has been reported to be successful in curing some types of mastitis, but milk produced by cows that have been treated with Aureomycin does not act normal in the cheese manufacturing process. The most noticeable effect in milk from cows treated with Aureomycin has been slow or complete cessation of acid production by bacteria in cultured dairy products; this has been especially true in the cheese …

The Relative Efficiency Of Artificially Stack-Dried Alfalfa Hay Versus Field-Cured Alfalfa Hay In Promoting Growth Of Dairy Heifers At Huntley, Montana, John A. Stocking

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Roughage is the cheapest source of nutrients for herbivorous animals, and alfalfa is the best of the roughages because animals consuming alfalfa as a major part of their diet have an adequate supply of protein, energy, and a considerable proportion of needed vitamins.

A Comparison Of Sweet Cream Buttermilk Powder With Nonfat Dried Milk Solids In The Manufacture Of Ice Cream, Davi Yanasugondha

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Properly dried sweet cream buttermilk, because of its high fat and lecithin contents, should make superior ice cream. Its use as a source of serum solids in ice cream. Its use as a source of serum solids in ice cream mix would open an outlet for this butter by-product and would serve the needs of ice cream manufacturers during nonfat dry milk solids shortage and it may make a higher score ice cream. The demand for milk solids shortage and it may make a higher score ice cream. The demand for milk solids has been increasing so rapidly that today …

The Effect Of Common Contaminants On Cheese Starter, Ivan R. Miller

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Starter is the "heart" of the cheese making industry. Only by proper handling of starter can good quality cheese be made. The economic loss from contaminated starter may prove disastrous to a cheese plant if proper corrective measures are not taken.

Milk usually contains a variety of bacteria. Under plant conditions some of these bacteria get into the mother starter or bulk starter unless extreme caution is used. Comparatively little is known about how one organism influences another when grown in milk. This problem is important in the cheese industry.

A Survey Of Plant Parasitic And Associated Species Of Nematodes In The Carrot Producing Area Of Cedar Valley, Iron County, Utah, Paul R. Fitzgerald

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Plant parasitic nematodes have long been known to cause extensive crop losses through reduced yields, shortened productive life, or lowered value of produce. The rood knot nematode, Heterodera marioni, is cosmopolitan. It destroys crops and causes economic losses equal to those of any other plant parasitic species. in 1948 this nematode caused an estimated loss to the carrot raising industry in Iron County, Utah of approximately $15,000. No estimates for the years prior to 1948 are available; however, reports of the county agent (14) for Iron County show that carrot production in the Cedar Valley is decreasing, and is …

Peromyscus Populations As Related To Seasons And Vegetative Types At The Hardware Ranch, Cache County, Utah, George Cleveland Turner Jr.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Members of the genus Peromyscus, White-footed Mice, are known to occur in nearly all habitats of North America. Because of their numerical abundance and widespread distribution, these mice are extensively used in the study of the dynamics of animal populations. Thus, information perteining to the local distruibution and activities of these mice is of value to the more comprehensive studies that are being carried out in the field of zoological research.

The Introduced Fishes, Game Birds, And Game And Fur-Bearing Mammals Of Utah, Boris Hewitt Popov

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

For a number of years wildlife workers have realized the importance of the past histories of introduced species. Emphasis in recent years has been directed toward introductions because of the tremendous hunting and fishing pressures. Yearly increases in numbers of hunters and fishermen have been noted in Utah for the past forty years. It is hoped that this compilation of the histories of the introduced game and fish species of Utah will be of value to sportsmen and wildlife managers alike in planning future introductions.

The material included in this paper was obtained from United States Government reports, Utah Territorial …

Processing, Grading And Sale Of Utah Turkeys, 1947-48, Paul R. Grimshaw

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Turkey production in Utah is one of the most important farm enterprises of the state. In 1945, 11.5 percent of the total farm cash income of the state was from the turkey enterprise. In 1946, 9.4 percent came from this source. Turkey production made up 8.9 percent of the total cash income from farm enterprises in 1944; 5.8 percent in 1945; 4.9 percent in 1940; 1.7 percent in 1935; and 1.3 percent in 1930. The objectives of this study were: (1) to ascertain charges for processing and hauling turkeys from the farm to the processing plants; (2) to determine the …

Wool Scouring Tests In Utah, Alma C. Esplin

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Wool as it is shorn from the sheep, is known as grease wool. The first step in the manufacturing of wool is scouring, or removal of all grease and foreign matter. Within any given grade, as determined by length of staple and fineness of fiber, the yield of clean wool is the primary factor in determining the value of the original grease wool. The price of scoured or clean wool is multiplied by the percentage yield of clean wool to determine the value of the grease wool.

Comparison Of Various Types Of Milk Sampling Devices, William A. Hoskisson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The importance of an accurate measurement of fat in milk deliveries is fully appreciated by most producers and plant operators. Since milk is purchased on a fat basis, the accuracy of the procedure used in sampling and testing the milk has often been questioned by both the buyer and seller.

A composite sample to be theoretically correct, should consist of aliquot portions of the milk shipments represented. Where aliquot portions are to be taken, a milk thief is commonly suggested. This device takes a vertical column of milk from the weigh tank. The idea is that the height of the …

Utah State Agricultural College Graduates Now Living In Other States, Robert Dawson Simpson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This is a study of graduates of the Utah State Agricultural College who have left Utah and are now residing elsewhere. Inquiries by faculty members and interested alumni, as well as the writer's own interest in the subject of migration, prompted the organization of this study.

The immediate reason for the inquiry was an enlarging interest on the campus concerning the present whereabouts of graduates who have left the state. When present residence was ascertained, other questions arose. What kind of employment had migrating graduates secured? What major interests were had? What important voluntary public services are graduates rendering to …

Trichomoniasis Of The Utah Agricultural Experiment Station Dairy Herd, Rue Jensen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Bovine trichomoniasis is a venereal infection that reduces the fecundity of cattle. It is caused by Trichomonas foetus (Riedmuller), a flagellated protozoan which inhabits the genital tract, causing inflammation and partial sterility. Both sexes are susceptible to infection. In females it is usually of short duration and frequently terminates spontaneously following abortion. In males the disease has both acute and chronic stages. During the acute stage the prepucial membranes become inflamed and a muco-purulent discharge develops in which trichomonads are abundant. In the following chronic stage symptoms disappear, but the animal remains a carrier and is a dangerous source of …

A Study Of Bull Associations, Arthur J. Morris

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

"A cooperative bull association", according to the United States Department of Agri culture, is "a farmers' organization formed for the purpose of joint ownership, use, and exchange of high class, purebred dairy bulls."

The members of the association are divided into three or more groups of neighboring farmers, each group being known as a block. A block may consist of one herd or several herds and contains from 40 to 60 cows. One bull is used in each block, and in order to prevent inbreeding, each bull is moved to another block every two years. If all the bulls live …

The Evaluation Of The Dairy Cow, George Gardner

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The accurate appraisal of property is in a great many cases a difficult task. A savings account in a bank may be evaluated with high precision. A business building in a large city may bring in returns sufficiently steady and permanent so that a careful appraiser with a reasonable knowledge of depreciation losses to be anticipated might fix a value without very much error.

A Study Of The Effect Of The Age Of Parents On The Ability Of Dairy Cows To Produce Milk And Butterfat, J. Howard Maughan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The question of the possible effect of the age of parents on the quality of the offspring which they produce has long been a disputed one. It is held by some that the ages of both parents act together in determining the quality of offspring. There are others who maintain that the age of the dam only is a factor and still others who believe that only the age of the sire need be considered in this connection.