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Nutritional Quality Control And Feedbunk Management Of Feedlot Cattle, Donald Gill

South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1971

Small errors in the nutrition and management of feedlot cattle frequently spell the difference between success and failure as a cattle feeder. Some frequently insignificant appearing factors may at times allow cost of gain to increase up to $4 to $5 per hundredweight.

Fifteenth Annual Cattle Feeders Day, Animal Science Department

South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1971

These are the complete proceedings of the fifteenth annual Cattle Feeders Day held on October 1, 1971 at South Dakota State University.

Effect Of Exercise On Tissue Concentrations Of Thyroid Hormones And On Thyroxine Degradation Rate In The Rat, William W. Winder

Theses and Dissertations

Several methods were used to detect changes in thyroid activity and in degradation of thyroxine (T4) in exercising and sedentary control rats. Rats were run in a motor-driven exercise wheel over a three-week period at progressively increasing work loads and then were run 1.5-2 hours per day for 10-14 days before sacrifice. Disappearance of injected T4-125I from plasma was considerably enhanced by exercise. As determined by isotopic equilibration and paper chromatographic methods, T4 concentration was depressed in plasma and elevated in liver of exercised rats. No significant changes in T4 concentration were observed in heart, kidney, or gastrocnemius muscle. Thyroidal …

Post-Mortem Examination Of Cattle And Sheep For Parasitic Helminths, Phil Duke Wright

Theses and Dissertations

A survey of helminth parasites of sheep and cattle was conducted to determine the incidence and distribution of these parasites that could be detected by post-mortem examination. Animals were obtained from local abattoirs within the valley, and the viscera were examined for the presence of helminth parasites. Parasites identifies from sheep in order of highest incidence were: Haemonchus contorus, Ostertagia cicumcinta, Chabertia ovina, Nematodirus spathiger, Trichostongylus colubriformis, Thysanosoma actinioides, Trichuris ovis, N. filicollis, Echinococcus granulosus, Strongyloides papillosus, O. ostertagi, Cooperia oncophora, Cysticercus tenuicollis, Fasciola hepatica, Oesophagostomum venulosum, Moniezia expansa, and M. benedieni. Those recovered from cattle in order of highest …

An Electrophysiological Study Of The Oral Plate Sensory Organs Of The Honey Bee (Apis Mellifera L.), Rodney R. Seeley

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The oral plate sense organs of the honey bee, Apis mellifera L., have been investigated employing an electrophysiological technique which allows simultaneous stimulation and recording.

The results of the study present evidence that the four bipolar sense cells innervating the sensory papillae on the oral surface of the hypopharynx are chemoreceptors. The sensory papillae respond to cations, glucose, water, and amino acids. Evidence for the absence of a mechanosensory cell is presented. The data concerning the sensory structures agree with the current theories of chemoreception.

A Conceptual Draft Of A Dynamic Hydro-Biological Model For Lake Mead, L. G. Everett, Bureau Of Reclamation

Publications (WR)

Food and energy transformation in an aquatic system must be understood in order to develop a simulation approach. This report provides a comprehensive study of an aquatic ecosystem. The objectives of this report are to show: (1) the biological relationships in an aquatic system (2) the role of nutrients in the biological cycle (3) the role of abiotic factors in a limnetic environment (4) the status of the art of "Eutrophication modeling".

Type Appraisal: Ii. Variation In Type Traits Due To Sires, Herds, And Years, H. D. Norman, L. Dale Van Vleck

Department of Animal Science: Faculty Publications

Variance components were estimated from type appraisal data to determine the importance of year, herd, sire, and herd x sire effects upon 49 body, udder, and management traits. Estimates were based on over 16,000 appraisals on daughters of Holstein artificial insemination sires. The variation explained by these effects never exceeded 34% of the total variance. Year effects were almost nonexistent (-2 to 3%). Herd effects were small for all traits except feeding speed, body weight, intensity and persistency of edema, and ketosis, and never exceeded 25%.

Most appraisal traits had low heritabilities. The estimate for milking speed was .23 while …

A Revision Of Cryptantha Subgenus Oreocarya, Larry C. Higgins

Brigham Young University Science Bulletin, Biological Series

This study is a taxonomic revision of Cryptantha subgenus Oreocarya (Boraginaceae), together with descriptions of species, synonyms, distribution maps, and discussions. The present treatment recognizes fifty-seven species and fourteen varieties, all separated by means of a comprehensive key, A history of the group, along with a discussion of distribution, ecology, and phylogeny is presented. As a basis for the comparison of taxa much of the research has been concentrated on morphological variation in herbarium specimens. Particular attention has been directed to a study of pubescence types, branching patterns, flowers, calyces, and fruit. The herbarium research has been correlated with extensive …

1971 Little International Agricultural Exposition Catalog, Little International Agricultural Exposition South Dakota State University

Little International "Little I" Agricultural Exposition Catalogs

No abstract provided.

Methods Of Cattle Identification For The Farmer, R C. Burking

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

THE value of management decisions in day-to-day dairy herd management, such as breeding, selection, and culling, depends on accurate identification of individual animals.

A report on tests of some methods of cattle identification available to farmers.

This article is concerned only with methods of identification of cattle on the farm. It is the farmer's responsibility to brand his stock with his registered brand to comply with the requirements of the Brands Act, in addition to any brands or tags applied for his own management purposes.

Any marks other than the registered brand or earmark must be clearly distinguishable from, and …

Grain Finishing Of Beef Cattle Grazing Dry Pasture Or Stubble, D J. Barker

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

WHEAT quotas, poor wool prices and the availability of cheap grain on the farm have stimulated interest in grain finishing of cattle for out-of-season beef production. For many years, Animals turned off in the autumn-winter period have brought better prices than those sold in summer, at the end of the pasture flush.

Feeding grain supplements to cattle on dry pasture or stubble requires less capital than feedlotting and saves the cost of handling and processing roughage.

This article gives the essentials for grain supplementation of dry pasture or stubble but warns that grain finishing is unlikely to be profitable outside …

Feedlots For Beef In W.A. : Some Guiding Principles, D J. Barker

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

FEEDLOTS are small enclosures where all of the animal's feed is supplied from an outside source. Compared with grazing, feedlotting is an expensive method of beef production.

This article gives a guide to the requirements for establishment and management of a farm feedlot, especially the basic equipment and materials, the type of cattle most suited to feedlotting, rations and feeding techniques.

The author warns that skill and experience are needed to run a feedlot and describes feedlotting as an expensive method of beef raising when compared with grazing.

Further details are available from the author

When Is A Cattle Feedlot Profitable?, J T. Stoate

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

THE current surge of interest in feedlots stems from low coarse grain prices and comparatively low early summer baby beef prices. Cattle raisers sense the opportunity for higher prices by holding the cattle on the farm over summer and autumn, and grain producers see better returns from barley and oats fed to cattle than sold as grain.

This article examines the profitability of cattle feedlots and presents sample budgets for two typical situations—the farmer who produces his own cattle but buys grain, and the cereal grower who produces grain but buys in cattle for finishing in a feedlot.

A ready …

Basic Pig Breeding, P Mcnamara

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

PROFITABLE pig raising depends on the tumoff of efficiently grown animals. Breeders should be selected for growth rate, and proper care of the breeding sow will ensure that her litters are large and healthy.

A rapid increase in the number of breeding sows in Western Australia suggests that some relatively inexperienced breeders may have started raising pigs. This article sets out the best pig breeding methods as a guide to beginners and a reminder to more experienced pig raisers.

Land Use In Wah Wah And Pine Valleys, Western Utah, Joseph R. Murdock, Stanley L. Welsh

Brigham Young University Science Bulletin, Biological Series

This is a review of the use of public lands in Wah Wah and Pine Valleys in western Utah for grazing of livestock, mining, and other private enterprises. The total area of the two valleys is approximately 1,440 square miles of which about 30 square miles are privately owned. From the time grazing of domestic livestock was initiated in the 1870's and 1880's until 1934, the land was free public domain and was grazed on a first-come, first-served basis. Passage of the Taylor Grazing Act in 1934 ended free use of public lands. Existing evidence indicates that by 1934 the …

Dairy Beef Shows Healthy Profits, D J. Barker

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

The October, 1970, issue of the Journal of Agriculture included results from the first year of a dairy beef production trial at Bramley Research Station.

This report presents results from the trial's second year, during which two levels of pasture utilisation were tested. The trial is now in its third year.

Block And Bridle Annual, 1971

Block and Bridle Annual (1933–2021)

Contents:

The Emblem
Staff Comments
An Address from the Department Chairman
Animal Sci Faculty
Report from 1970 National Meeting
Faculty Advisors to Block and Bridle
1971-1972 Officers
A Message from the President
Committee Chairmen
1971 Membership
Seniors
Block and Bridle Deadline
Quarter Horse Show
Livestock Judging Contest
Meat Judging Contest
Spring Steak Fry
Janike 1970 B & B Honoree
Honors Banquet
State Fair Trophies
Animal Science Department Complex
Little Ak-Sar-Ben
1870 Ham Sales a Success
B & B Queen Contest: Sue Vierregger
1970-71 Program Revue
Spring Tour
Tour Itinerary
Meats Teams
Meats’ Teams Records
Livestock Team Records

Cattle Breeds For Beef Production In W.A, J L. Anderson

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

BREEDS develop because people select animals for characters which are useful to them in their own environment.

Thinking Of Pigs To Raise Your Income?, P Mcnamara

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

WHEAT quotas and low wool prices have caused many farmers to look to pigs to consume homegrown grain and to lift their incomes. However, with sow numbers at a record level, is it possible for a wheatbelt farmer to raise pigs profitably?

Because of his access to cheap grain, the wheatbelt farmer may be able to make a good profit on each pig sold. This could make pigmeat production a useful sideline on the farm, providing the farmer produces only lean pigs. There is no market for overfat pigs.

This article gives some hints on production of pigs on cereal …

Pheasant Raising, P Smetana

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

THERE has been increased interest in pheasant raising in Western Australia over the past few years, mainly as a result of more sophisticated eating habits and the associated restaurant boom, as well as farmers in country areas looking for more profitable sidelines.

Tender Wool Can Be Avoided, I G. Ralph

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

THE production of tender wool which will not stand the tension and friction of the combing process can be reduced by an alteration in sheep management practices.

This is the finding of research carried out by the Sheep and Wool Branch of the Department of Agriculture over an eight-year period.

Dairy Calves Can Safely Be Fed Once A Day, R A. Bettenay

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

THE sale of milk rather than butterfat has increased greatly in the past few years and less than half the dairy farmers in Western Australia now own cream separators.

Feeding whole milk once a day can be successful for raising dairy calves, even in winter when calf rearing is most difficult.

A recent experiment at Wokalup Research Station showed that satisfactory weight gains can be achieved if liquid milk is fed only once a day from a very early age. Trial calves gained I lb a head a day over the 12 weeks of the experiment.

Once-a-day feeding greatly reduces …

Responses Of Rumen Microflora To Whey Products Added To High-Grain Low-Roughage Rations, Virgil L. Metzger

Electronic Theses and Dissertations

Many factors present in livestock feeds affect the numbers and types of protozoa and bacteria in the rumen. A small particle size of feed and a fast rate of passage of the feed through the ruminant decreases protozoal numbers. Full feeding of a concentrate ration and an acid pH in the rumen also tend to reduce protozoa numbers. Bacteria numbers tend to increase as the protozoa numbers decrease. Knowledge of rumen microflora population changes on different rations is lacking. It is known that restricted-roughage rations will generally cause lower protozoal numbers. Since whey is an available source of lactose and …

The Lipid Composition Of Milk As Affected By High Grain-Limited Roughage Rations Containing Whey Products, Roger Charles Peper

Electronic Theses and Dissertations

Certain rations fed to lactating dairy cows appear to have a dramatic influence on the lipid composition of milk fat produced. A high grain ration fed with a limited amount of roughage tends to cause a depression in milk fat production while at the same time changing the milk fat composition. There have been various attempts to alleviate the depression in milk fat. Minerals used in the ration seem to slightly relieve the milk fat depression caused by high grain rations. One drawback has been lower milk production due to a decline in concentrate consumption. Whey products added to a …

Effects Of Various Factors On The Rachitogenic Activity Of Isolated Soy Protein, Donald James Arshem

Electronic Theses and Dissertations

The nature of the rachitogenic activity of isolated soy protein was investigated in fifteen studies. A RP-100-glucose purified diet was fed to day-old turkey poults housed in stainless steel batteries. Feed and water were provided ad libitum. Corn, oat hulls, solvent-extracted soybean meal, full-fat extruded soybeans, C-1 protein, casein and texturized forms of soy protein were added to the basal diet at various levels. All feedstuffs were added at two particle sizes: natural form of the feedstuff (>250 u); and ground in a ball mill (<250 >u). The effects of autoclaving for 60 minutes at 120°C were also investigated. …

Effects Of Various Levels Of Dietary Selenium And Arsenic On Chickens, Richard L. Arnold

Electronic Theses and Dissertations

Various levels of selenium and arsenic additions were made to several types of chicken diets to study their effects on growth and reproduction criteria. Three experiments were conducted. The first study involved day-old chicks and terminated at 64 weeks of age. These yearling hens were then used for the second experiments which terminated when the hens were 104 weeks old. The third study was initiated with 20 week old pullets and terminated when they were 52 weeks old. Feeding purified diets resulted in slower chick growth and lower mature body weights of hens. Selenium additions of 2.0 ppm resulted in …

Pseudomonas As Causative Agents Of Fluorescence In Anguispira Kochi (Pfeiffer) Mucus, John Michael Baum

Masters Theses

The mucus from land snail specimens of Anguispira kochi collected from Coles and Edgar counties, Illinois, emits a blue fluorescence when exposed to ultra-violet light. Pseudomonas, a genus of bacteria which produces fluorescent pigments, has been isolated from the mucus of these snails. The object of the study was to compare the fluorescence of the mucus from individuals of A. kochi with the fluorescence of the pigments produced on a synthetic medium by pseudomonads isolated from the mucus of these snails. An effort was made to establish that Pseudomonas is the causative agent of fluorescence in the mucus of …

Temperature Computer Measurements, Production And Carcass Traits Of Individually Fed Weight Constant Steers, Lowell M. Anderson

Electronic Theses and Dissertations

During 1968, 29 Hereford steers were individually fed and marketed at one of seven constant weight classes from approximately 386 to 522 kg at intervals of 22.7 kg. During 1970, 21 Angus and Hereford crossbred steers were individually fed and marketed at one of four constant weight classes from approximately 386 to 522 kg at intervals of approximately 45.0 kg. The amounts of edible portion, trimmed fat, removed bone and the summation of the kidney, pelvic, and cod fat were determined on the steers of both years. In 1970 two experiments examined the usefulness of an analog computer for calculation …

Once A Day Calf Feeding, R A. Bettenay

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

Trials at Wokalup Research Station in 1970 proved that calves could be successfully reared with once a day liquid milk feeding, providing a high protein meal was continually available.

This trial was carried out to see if the high protein meal was essential for the success of the once a day feeding system.

Prevent Worms In Cattle, G C De Chaneet

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

PARASITIC gastro enteritis, caused by roundworms, is a common cause of economic loss in calves, yearlings and occasionally cows in south-western Australia. Losses could be prevented if stock owners realised the full effects of these parasites, and understood the causes of worm infestation.