Veterinary Medicine Commons^™

Selenium : An Essential Trace Element, Laurence C. Snook

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

SELENIUM is one of the rare elements. In most soils it occurs in such minute quantities as to escape attention.

Plants, however, can concentrate selenium in their tissues and, in the U.S.A. in areas where the soils contain more selenium than usual, this facility can result in selenium poisoning in grazing animals.

Fortunately, none of the common soil types in Australia appears to contain enough selenium to affect the quality of the herbage.

Pig Pox : Its Presence In W.A. Is Suspected But Not Yet Confirmed, F C. Wilkinson

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

A PIG-FARMER recently asked for in-information on pig-pox and inquired whether the disease occurs in Western Australia.

The first part of the question is easily answered, as pig-pox is a typical pox disease caused by a virus and resulting in roundish, red areas appearing on the pig's skin.

The disease is in fact very similar to the other more commonly known pox diseases—chicken-pox in the human population, fowl-pox in poultry and cow-pox in cattle.

Time Of Lambing, W L. Mcgarry, I. K. Scott

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

THE time chosen for lambing depends on many factors, and the final decision rests with the individual flock-owner who has to consider how different times fit in with the overall programme of farm operations; how they will influence the marking percentage, the marketing, the thrift of his sheep and most important, how they influence the profit from his sheep operations.

Pulpy Kidney Is Still A Sheep Killer, F C. Wilkinson

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

ALTHOUGH considerable publicity has been given to methods of control by vaccination, numbers of sheep are lost every year in outbreaks of infectious enterotoxaemia— the disease commonly known as "pulpy kidney."

Cattle Lice : Spray Now For Prevention, F C. Wilkinson

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

ALTHOUGH lice infestation can occur in any season of the year, the heaviest infestations are found during the winter.

This build up of lice infestation normally starts in the autumn but if the cattle are treated by spraying at this period, the majority of the lice are killed and the build up is prevented.

Thus the old saying "Prevention is better than cure" certainly applies with regard to cattle lice.

Milk Fever (Hypocalcaemia) Of Cows, Department Of Agriculture, Western Australia

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

THE condition known as milk fever is almost essentially a disease of highly productive adult milking cows at the time of calving.

It is characterised by a low blood calcium level causing a sudden general depression of consciousness of the cow and muscular paralysis.

Without treatment most cases result in the death of the cow.

How Efficient Is Your Drenching Gun? Does It Deliver Sufficient Drench To Kill The Worms?, Department Of Agriculture, Western Australia

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

THE drenching gun pictured certainly doesn't. It is set to give two fluid ounces of drench (60 ccs approximately). However, when tested by squirting the fluid into a measuring cylinder, instead of down the sheep's gullet, it delivered only 30 ccs.

Control Of Hog Lice And Mange, Robert Roselle

Department of Entomology: Faculty Publications

The hog louse (Haematopinus suis) is the largest species of louse found on domestic animals. It may attain a length of one-quarter of an inch. The body is oval, and the legs terminate in large, dark claws well adapted to cling to hairs. Hog lice are bluish-gray in color. They are found only on hG>gs except in very unusual cases. The eggs or "nits" are glued to the hairs and hatch in 12 to 20 days. Young lice mature in 10 to 12 days. The average life cycle is about 35 days. Lice suck blood from the host, and …

50 Years Of Research At The North Platte Experiment Station, W. W. Burr, J. C. Adams

Nebraska Agricultural Experiment Station: Historical Circulars

The North Platte Experiment was established fifty years ago. So many changes have occurred since then that few people remember why research in dry land agriculture was started in Nebraska and other Great Plains states. In order to get a proper perspective, it may be well to consider some early history.

Histopathology Of Bovine Mastitis, The, C.F. Helmboldt, E.L. Jungherr, W.N. Plastridge

Storrs Agricultural Experiment Station

No abstract provided.

Leaflet No 2024 - Mulesing And Tail Stripping. Proved Measures For The Control Of Crutch And Tail Strike In Sheep, J Reilly

Bulletins 1 - 2999

FOR many years, the losses from blowfly strike on the crutch and tail areas imposed a tremendous economic burden on the Merino sheep industry in Australia. Today, the modified Mules operation and the tail-strip treatment have provided a convincing answer to this menace. Breech wrinkles encourage strike, and although as a long-term policy, efforts are being made to eliminate wrinkles by breeding for plainness of breech, it is of the utmost importance to give the sheep IMMEDIATE protection by the most effective methods available.

Please note that “THIS ILLUSTRATED ARTICLE CONTAINS GRAPHIC IMAGES”

Leaflet No 1002 - Swine Paratyphoid (Salmonellosis Necrotic Enteritis), C R. Toop

Bulletins 1 - 2999

Paratyphoid is an infectious disease of pigs which is likely to make it appearance wherever pig raising is practised.

It may occur in an acute septicaemic form which is often rapidly fatal and accompanied by serious mortality and in a sub-acute or chronic form known as necrotic enteritis which is characterised by unthriftiness and scouring. The out breaks occurring in Western Australia are principally of the acute type and they are usually associated with the introduction of pigs from saleyards.

Pig Typhus (Salmonellosis Suis), L. Van Es

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Salmonellosis suis or pig typhus, also designated as pig typhoid, infectious necrotic enteritis, or "necro," is an infectious disease among young pigs. It constitutes a major factor in the mortality of juvenile swine, and as such must be regarded as a more or less perennial hazard in swine production. Infectious necrotic enteritis caused by Salmonella suipestifer is the subject of the present publication.

Vitamins For Poultry, F. E. Mussehl, C. W. Ackerson

Nebraska Agricultural Experiment Station: Historical Circulars

Vitamins are chemical substances essential for the maintenance of life, growth, and reproduction. Their effects are out of proportion to the relatively small amounts required. Fortunately, most of these essentials are widely distributed in nature, and an adequate ration can nearly always be provided by using logical combinations of common feedstuffs. Under certain conditions, however, the use of vitamin-containing concentrates may be desirable. In planning practical rations, it should be recognized that the plant leaf is the source of most vitamins. Milk and meat products make important vitamin contributions to the diet in addition to their proteins and minerals. Direct …

Studies On The Validity Of Swine Erysipelas Culture-Vaccines, L. Van Es, J. F. Olney, I. C. Blore

Nebraska Agricultural Experiment Station: Historical Research Bulletins

In countries where vaccination against swine erysipelas has been practiced during the last half century, there is a consensus among veterinarians that the best results are obtained when the live culture-vaccine is not only fresh and highly virulent but is endowed also with a good capacity for growth on artificial culture media. Apparently avirulent culture-vaccines are apt to engender only a transitory immunity or fail altogether. The problem presented by undesirable culture-vaccines was deemed to be of such importance to the swine industry that this Station undertook a series of experiments, to determine what influences might be accountable for the …

A Study Of The Renal Vascular Supply In The Domestic Cat, Elizabeth Rosen

Bachelors’ Theses

Studies on the normal and abnormal vascularization of the renal vessels in the domestic cat (felis domestica) indicate the frequency of anomalies that occur, but in most of the studies it is the inferior vena cava that is most often recorded. Among the occasional references to several renal veins or arteries we have Huntington and McClure, Elmer Butler, Gaylord Bates, William Darrach, and C.H. Fortune. Yet no study seems to have been made of individuals of any particular class. A superficial observation seems to indicate a large number of cats used in the laboratory had multiple renal veins. Hence a …

The Effects Of Penicillin On E. Rhusiopathiae Infected Pigeons, L. Van Es, J. F. Olney, I. C. Blore

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Advantage was taken of an opportunity to study the effects of penicillin on Erysipelothrix rhusiopathiae, the causative organism of swine erysipelas. Owing to the fact that swine cannot readily be infected with erysipelas by artificial methods, pigeons which are highly susceptible to the disease, were selected to serve as experimental animals. It was the purpose of these studies to ascertain whether or not the swine erysipelas bacillus is sensitive to the drug and incidentally to determine the possibility of finding application of penicillin in the treatment of swine.

External Parasites Of Poultry And Methods For Their Control, O. S. Bare

Nebraska Agricultural Experiment Station: Historical Circulars

External parasites cause severe losses to Nebraska poultry producers each year, and in many cases may be the deciding factor between success and failure. Under present circumstances, when maximum production is essential, prompt and effective measures must be taken to hold these saboteurs in check.

A Study Of The Digestive System In The Sparrow (Passer Domesticus), Henry Joseph Wisniewski

Bachelors’ Theses

The digestive tube proper of the Sparrow beings with the Oesophagus. This is a soft tubular organ which serves to convey food rapidly from the pharynx to the stomach. It extends along the median ventral margin of the neck lying dorsal to or to one side of the trachea. Posteriorly, at the base of the neck and shortly in front of the sternum it broadens slightly and gives rise to a dilated region of the oesophagus, namely the Crop, "whose secretion serves to moisten the food or even to initiate digestion." In larger birds as in the pigeon, the crop …

Swine Erysipelas Infection In Man, L. Van Es

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The preceding decade witnessed the introduction and spread within this state of a hitherto uncommon disease of swine. This disorder, swine erysipelas, has gradually become disseminated throughout Nebraska's swine population until it has developed into a major problem of preventive veterinary medicine. Its appearance, furthermore, added another to our list of animal maladies which are communicable to man. The latter consideration may serve as warrant to review what is known about the part played by swine erysipelas as a human disease, to describe its more salient features and to examine them from epidemiological, clinical, pathological and prophylactic viewpoints.

An Inquiry Into The Influence Of Environment On The Incidence Of Poultry Diseases, L. Van Es, J. F. Olney

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The principal purpose of the investigation reported here was to evaluate, if possible, hygienic measures, and in addition to gather whatever information might become available pertaining to the relation of certain disorders to a given poultry population after its exposure to their specific etiologic factors. The experiments were conducted on a piece of ground upon which poultry had not been maintained for many years, if ever.

A Manual For Hog Raisers, W. J. Loeffel

Nebraska Agricultural Experiment Station: Historical Circulars

Hogs are one of Nebraska's principal sources of agricultural income. The popularity of the pig is doubtless due largely to his efficiency as a meat producer. He uses less feed to make a given gain than either the steer or the sheep. On being slaughtered, the pig dresses out a higher percentage of meat than either of the other two meat animals. Since pork is generally fatter than beef or lamb, it has a higher energy value. Pork lends itself to curing processes and, as cured meat and lard, occupies an important place in the world's commerce. Processing aids in …

The Spinal Nerves And Spinal Cord Of The Frog, Laverne A. Penn

Bachelors’ Theses

The common grass frog, Rana pipiens as wall as the bull frog, Rana catesbiana have served during many decades as material from which both the student of zoology and the investigator in biological problems have gathered valuable information about the anatomy and physiology of the common systems. Among these systems the central, peripheral, and sympathetic nervous system plays a coordinating role, because of the ramifying nature of its organization. It is the purpose of this thesis to investigate the gross and histological structure of these branches known as spinal nerves. When one inspects the literature on the nervous system of …

Feeding And Care Of Calves, R. R. Thalman

Nebraska Agricultural Experiment Station: Historical Circulars

It is not infrequent that considerable difficulty is encountered in raising calves with limited amounts of milk or none at all. Requests for information on calf gruels, mixed grain feeds, and commercial supplements are frequent enough to make a short circular upon this subject seem desirable. Furthermore, as the more diversified agricultural program gets under way these requests are increasmg.

The Muscles Of The Forelimb Of Canis Familiaris, Charles G. Wilber

Bachelors’ Theses

In the study of the anatomy of the vertebrates, there has been much work done and a large number of the forms have been studied with great thoroughness. Among the domesticated animals this is particularly true. The students of the veterinary sciences have given us a deep insight into the structure and function of the mammalian body. This is most certainly true in the case of the dog. The species Canis familiaris has been used for many years in the studies of physiology and surgery. However, it is also true that a plenitude of literature relative to the anatomy of …

The Lungs And Respiration In The Frog, Peter P. Strassburg

Bachelors’ Theses

In a wide sense, respiration is sometimes defined as the gaseous exchange constantly taking place between an organism and its environment. Essentially it is concerned with the intake of oxygen and the output of carbon dioxide but it also includes any other gas exchange that might occur. Small organisms take oxygen directly from the air or from the watery medium surrounding them into all parts of their structures. They also give off carbon dioxide from all their parts directly into the surrounding medium. They can do this successfully because they are small enough to have every cell in direct or …

Studies On Nutritional Muscular Dystrophy, I. Dietary Factors, Ii. Fibrosis And Lipomatosis Of Tissues, Violet Myrtle Wilder

Department of Biochemistry: Dissertations, Theses, and Student Research

dissertation published as three peer-reviewed papers:

Sergius Morgulis, Violet M. Wilder, and S. H. Eppstein. (September 1938). Further studies on dietary factors associated with nutritional muscular dystrophy. Journal of Nutrition 16(3): 219-227.

Howard C. Spencer, Sergius Morgulis, and Violet M. Wilder. (August 1937). A micromethod for the determination of gelatin and a study of the collagen content of muscles from normal and dystrophic rabbits. Journal of Biological Chemistry 120(1): 257-266.

Sergius Morgulis, Violet M. Wilder, Howard C. Spencer, and S. H. Eppstein. (August 1938). Studies on the lipid content of normal and dystrophic rabbits. Journal of Biological Chemistry 124(3): 755-766.

The Anatomy Of The Oyster, M.J. Rohlinger

Bachelors’ Theses

The phylum Mollusca manifests the following characteristics: bilateral symmetry; three primary germ layers; free-living and sessile; marine and fresh-water; a shell modified to form either a bivalve or a univalve which gives an appearance of segmentation due to rings of growth or arrangement of certain parts of the shell as is seen in the class Amphineura, this is only apparent metamerism because the Mollusca are considered to be unsegmented animals; a coelom poorly developed; a foot; a mantle cavity; well developed digestive, circulatory, excretory, and reproductive systems. When one inspects a Chiton, an oyster, a snail, an octopus, or a …

White Scours Of Calves, L. Van Es

Nebraska Agricultural Experiment Station: Historical Circulars

It becomes possible to understand some of the reasons for the occurrence of disorders among the newborn of animals kept under the usual conditions imposed by domestication. Among these, the subject of this circular, White Scours in Calves, occupies a prominent place.

The Common Intestinal Roundworm Of Swine, H. M. Martin

Nebraska Agricultural Experiment Station: Historical Circulars

The large intestinal roundworm of pigs is a very common parasite, and is probably present in every hog raising district of Nebraska. Until the last few years the true nature of this parasite was unknown. Little did we realize the actual harm done by this worm; but through the scientific investigations of Stewart, Ransom, and others we now know that this parasite causes heavier losses to the breeder and feeder of swine than any other now common in Nebraska.