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Articles 5101 - 5130 of 5204

Full-Text Articles in Medicine and Health Sciences

The Pharmacology Of Rodenticides, S. A. Peoples Mar 1970

The Pharmacology Of Rodenticides, S. A. Peoples

Vertebrate Pest Conference Proceedings: 4th (1970)

The compounds used as rodenticides are tremendously varied in their chemical structure and mechanism of action. With a few exceptions, these agents are generally poisonous to all animals, including man, and a great deal of study has been directed to their toxicity in animals other than rodents. However, the development of new compounds as Norbormide and certain antifertility drugs which are highly selective in their action may justify the hope that the ideal rodenticide free of secondary toxic hazards will soon be available. Until this happy announcement is made, a review of the pharmacology of the older compounds is in …


1970 Nebraska Beef Cattle Report, J. L. Adams, E. F. Frolik, H. W. Ottoson, F. E. Eldridge Jan 1970

1970 Nebraska Beef Cattle Report, J. L. Adams, E. F. Frolik, H. W. Ottoson, F. E. Eldridge

Nebraska Beef Cattle Reports

The use of high concentrate rations in finishing cattle has led to a rather high loss of livers due to abscesses.

The 1967 Statistical Summary of the Federal Meat Inspection Service of the USDA indicated the total number of cattle inspected was 27,859,980. Of these, 9.6% were condemned because of liver abscess. Considering the value of a liver to be about $3, the estimated loss to the industry because of condemnatIon due to abscess would be over $8 million annually.

The incidence of liver abscesses increases as the roughage level in a finishing ration decreases below 5% (Table I). The …


Transferable Drug Resistance Among Enterobacteriaceae Isolated From Cases Of Neonatal Diarrhea In Calves And Piglets, David P. Aden, Norman D. Reed, Norman R. Underdaul, Charles A. Mebus Dec 1969

Transferable Drug Resistance Among Enterobacteriaceae Isolated From Cases Of Neonatal Diarrhea In Calves And Piglets, David P. Aden, Norman D. Reed, Norman R. Underdaul, Charles A. Mebus

School of Veterinary and Biomedical Sciences: Faculty Publications

Fecal specimens were collected on 22 different Nebraska ranches and at the Department of Veterinary Science from young calves and pigs with neonatal diarrhea. Enterobacteriaceae isolated from these fecal specimens were screened for resistance to tetracycline, streptomycin, sulfamethizole, kanamycin, chloramphenicol, colistin, nitrofurantoin, and nalidixic acid. Of the 92 strains studied, 57 were resistant to one or more of these antimicrobial agents. Resistant strains were obtained from all herds involved in the study. The two most common resistance patterns were tetracycline streptomycin sulfamethizole (22 of 57) and tetracycline (13 of 57). None of the strains were resistant to chloramphenicol, colistin, nitrofurantoin, …


The Chemistry Of Pesticides, Walter R. Benson Jun 1969

The Chemistry Of Pesticides, Walter R. Benson

United States Food and Drug Administration: Publications

Introduction

This review is limited to the structures and a few reactions of the pesticides mainly insecticides-that affect mammalian systems and that are the subject of papers by other authors in this monograph. There is no attempt to give a complete review of the chemistry of pesticides. It is intended only to show the breadth and depth of pesticide chemistry through the use of examples. With proper use of the references, and of the papers by Crosby, Freed and Montgomery, and Owens in this monograph, the reader will be able to find information for other chemicals.

Nomenclature

Pesticides or economic …


Magnitude And Pattern Of Compensatory Growth In Rats After Cold Exposure, Marjorie Lee, P. C. Chu, H. C. Chan Jun 1969

Magnitude And Pattern Of Compensatory Growth In Rats After Cold Exposure, Marjorie Lee, P. C. Chu, H. C. Chan

College of Dentistry: Faculty Publications

It is a common observation that normal growth is affected or suppressed in young individuals by environmental adversities and physical disturbances. On the other hand, when health or favorable conditions are restored, the tempo of growth promptly accelerates as if the individual is trying to make up for the growth debt incurred. Tanner has referred to this increased growth rate after diseases or starvation as compensatory or 'catch-up' growth, a topic on which he has written eloquently and fully in a number of articles (1963a, b). He considers this compensatory growth as a 'self-stabilizing' or 'target-seeking' phenomenon in the regulatory …


Calf Diarrhea (Scours): Reproduced With A Virus From A Field Outbreak, C. A. Mebus, N. R. Underdahl, M. B. Rhodes, M. J. Twiehaus Mar 1969

Calf Diarrhea (Scours): Reproduced With A Virus From A Field Outbreak, C. A. Mebus, N. R. Underdahl, M. B. Rhodes, M. J. Twiehaus

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Neonatal calf diarrhea typical of that seen in field cases was produced in colostrum-deprived calves by inoculating either feces or bacteria-free filtrates via the duodenum, orally, or by a spray (aerosol). Three calves, kept free of E. coli, developed severe diarrhea following inoculation with a bacteria-free filtrate. Intense fluorescence in the epithelium of sections of small intestine from two experimental calves was observed following staining with ftuorescein-labeled gamma globulin produced with viral antigen prepared from the feces of two experimental diarrhetic E. coli-free calves. Fluorescing cells were also present in the feces of experimental and field cases of neonatal …


Namru-3 Translations Of Parasite Literature From Russian, French, Japanese, Etc. Into English (1909-1969) T301-T400, United States Naval Medical Research Unit Number Three, Cairo, Medical Zoology Department Jan 1969

Namru-3 Translations Of Parasite Literature From Russian, French, Japanese, Etc. Into English (1909-1969) T301-T400, United States Naval Medical Research Unit Number Three, Cairo, Medical Zoology Department

United States Naval Medical Research Unit 3: Publications

T301. TRANSLATION FROM ITALIAN. TORTONESE, E. (1948). Ecological notes on a desert area of Lower Egypt (Tel-El-Kebir). Boll. Mus. Zool. Univ. Torino (1942-48), 1(13):155-183.

T302. TRANSLATION FROM RUSSIAN. EROPOV, V. I. (1962). Some data on diurnal activity of Ixodes persulcatus P. Sch. in Irkutsk Oblast. Mater. Yubil. Nauch. Konf. Irkutsk. Nauch. -Issled. Inst. Epidem. Mikrobiol. pp. 15-16.

T304. TRANSLATION FROM CHINESE. CHANG, P. -H. LOU, W. -Y., TENG, C. -C. and HSU, A. -C. (1964). Studies on tick infestation of domestic animals in Nanking. Acta Zool. Sin., 16(1):132-138.

T305. TRANSLATION FROM RUSSIAN. NIKOL'SKY, S. N. and MESHCHERYAKOVA. V. D. (1964). …


Can The Superior Learnability Of Meaningful And Pleasant Words Be Transferred To Nonsense Syllables?*, Albert Silverstein, Richard A. Dienstbier Apr 1968

Can The Superior Learnability Of Meaningful And Pleasant Words Be Transferred To Nonsense Syllables?*, Albert Silverstein, Richard A. Dienstbier

Department of Psychology: Faculty Publications

The Ss in 2 experiments first learned a PA list of words as responses to nonsense syllables. In 1 condition the words differed in meaningfulness (M) and in the other condition the words differed in pleasantness (PL). Next, Ss learned a 2nd PA list of the same syllables as responses to numbers. High-M words were learned faster than low-M words, but did not transfer either this difference in learning or the difference in rated M to the syllables. Pleasant words were learned faster than indifferent words in one experiment (men’s) but not in the other (women’s). In neither experiment did …


Problems Of Epidemiological Geography (Report Viii): Structure Of A Zoonosis Nosoareal, I.I. Yelkin, V.K. Yaschkul Feb 1968

Problems Of Epidemiological Geography (Report Viii): Structure Of A Zoonosis Nosoareal, I.I. Yelkin, V.K. Yaschkul

Zoonotics and Wildlife Disease: Publications

The Main structural indices of a nosoareal are the focalress in the distribution of infectious diseases of man and their causative agents. The problem of the focalness of infections has been developed for quite a long time in the field of parasitology and is a very important division of contemporary epidemiology (Ye. N. Pavlovskiy, 1939, 1944, 1955, 1960, 1961, 1964; L. V. Gromashevskiy, 1941, 1949, 1965; I. I. Yelkin, 1951, 1960, 1962; P. A. Petrishcheva, 1955, 1959, 1965; V. N. Beklemishev, 1956, 1959, 1961; Yu. M. Rall, 1958, 1965; V. V. Kucheruk, 1959, 1960, 1965; A. G. Voronov, 1965, and …


A Brief History Of The Namru-3 Medical Zoology Program, Harry Hoogstraal Jan 1968

A Brief History Of The Namru-3 Medical Zoology Program, Harry Hoogstraal

United States Naval Medical Research Unit 3: Publications

The NAMRU-3 Medical Zoology program began during Easter week of 1950. We had just closed the NAMRU-3 field station at Torit, in Equatoria Province of soulheastern Sudan, and were heading homeward to the United States. However, the offer to remain in Egypt for a year or two to develop a Medical Zoology department at NAMRU-3 provided an interesting challenge after working for several years in tropical forests and grasslands of Africa and other continents. We shall briefly describe subsequent events under four headings: (1) Medical Zoology in Egypt, (2) Ticks and Tickborne Diseases of the World, (3) Kala Azar in …


Rated Pleasantness And Association Value Of 101 English Nouns, Albert Silverstein, Richard A. Dienstbier Jan 1968

Rated Pleasantness And Association Value Of 101 English Nouns, Albert Silverstein, Richard A. Dienstbier

Department of Psychology: Faculty Publications

Ratings of pleasantness (PL) on a 7-point scale and of association value (a′) on a 5-point scale are reported for 101 two-syllable nouns. The ratings were obtained from two samples of 100 women each and two samples of 100 men each. Sizable differences were obtained between words on both scales. For women and men respectively, PL and a′ were correlated .570 and .585; PL and printed frequency were correlated .233 and .207; frequency and a′ were correlated .533 and .764. Women’s and men’s ratings correlated .973 for PL and .899 for a′.


Arthropods Of Medical Importance In Asia (And The European Ussr), Part Ii: Data On Arthropods Other Than Mosquitoes, Bernard V. Travis, Renato M. Labadan Jun 1967

Arthropods Of Medical Importance In Asia (And The European Ussr), Part Ii: Data On Arthropods Other Than Mosquitoes, Bernard V. Travis, Renato M. Labadan

Harold W. Manter Laboratory of Parasitology: Library Materials

Includes information on black flies, sand flies, midges, horse flies, biting flies, non-biting flies, fleas, bugs, urticating and vesicating arthropods, ticks, mites, and miscellaneous arthropods of medical importance from Asia and the European USSR.


1967 Beef Cattle Progress Report Of Research Activities, E. F. Frolik, H. W. Ottoson, J. L. Adams Jan 1967

1967 Beef Cattle Progress Report Of Research Activities, E. F. Frolik, H. W. Ottoson, J. L. Adams

Nebraska Beef Cattle Reports

Oral feeding of stilbestrol or implanting with stilbestrol or Synovex has resulted in increased weight gain and efficiency of gain for cattle fed finishing rations.

Combining oral feeding or stilbestrol with implanting did not give increased performance above that obtained from oral stilbestrol alone in two tests. Implanting cattle fed oral stilbestrol at the start of the feeding program with either stilbestrol or Synovex gave a similar pattern of performance to that obtained from oral stilbestrol alone.


Namru-3 Translations Of Parasite Literature From Russian, French, Japanese, Etc. Into English (1895-1967) T201-T300, United States Naval Medical Research Unit Number Three, Cairo, Medical Zoology Department Jan 1967

Namru-3 Translations Of Parasite Literature From Russian, French, Japanese, Etc. Into English (1895-1967) T201-T300, United States Naval Medical Research Unit Number Three, Cairo, Medical Zoology Department

United States Naval Medical Research Unit 3: Publications

T201. TRANSLATION FROM RUSSIAN. SARTBAEV, S. K. (1959). Materials on the biology of certain ticks of the genus Haemaphysalis in Kirgiz. SSR. Trud. Inst. Zool. Parasit., Akad. Nauk Kirgiz. SSR, (7):191-202.

T202. TRANSLATION FROM RUSSIAN. MAKHMETOV, M. M. (1961). Spontaneous infection of Rickettsia burneti in ectoparasites of the Sand Martin. Trud. IV. Konf. Prirod. Ochag. Bolez. Vop. Parasit. Kazakh. Respub. Sred. Azii (September 15-20, 1959), (3):70-74.

T203. TRANSLATION FROM RUSSIAN. KALMYKOV, P. G. (1961). Development of ixodid ticks in the natural environment of islands in the Sea of Japan. Trud. IV. Konf. Prirod. Ochag. Bolez. Vop. Parasit. Kazakh. Respub. Sred. …


Quantitative Calculation Of Gas Chromatographic Peaks In Pesticide Residue Analyses, Jean A. Gaul Apr 1966

Quantitative Calculation Of Gas Chromatographic Peaks In Pesticide Residue Analyses, Jean A. Gaul

United States Food and Drug Administration: Publications

Comparison of five methods for calculating gas chromatographic peaks (disc integration, triangulation, peak height X width at half height, Rt X peak height, and peak height) shows no significant difference in the calculated results when aldrin, heptachlor epoxide, and dieldrin are injected into a gas chromatograph equipped with electron capture detector.

Problems are associated with the calculation of toxaphene, chlordane, DDT, and BHC. The author makes suggestions for calculating these four residues when present individually and in combinations with other pesticides. Use of the last four toxaphene peaks compares favorably with results obtained by using the entire toxaphene curve. …


1966 Beef Cattle Progress Report Of Research Activities, E. F. Frolik, H. H. Kramer Jan 1966

1966 Beef Cattle Progress Report Of Research Activities, E. F. Frolik, H. H. Kramer

Nebraska Beef Cattle Reports

Many beef cattle breeders in the United States and other countries are following the progress of the selection experiment at the Fort Robinson Beef Cattle Research Station, Crawford, Nebraska. Three lines of Hereford cattle from the same genetic foundation are under selection. Line 21 is selected for 200-day weight. Line 22 is selected for yearling weight. Line 23 is selected for an index combining yearling weight and a score for muscling and fat thickness.

Each line is operated as a closed herd so it will be possible to determine how much improvement in economic traits can be made by selecting …


Ixodid Ticks: Possible Vectors Of Tuberculosis, Ya. A. Blagodarnyy, I. N. Blekhman, M. P. Yukunin Jan 1966

Ixodid Ticks: Possible Vectors Of Tuberculosis, Ya. A. Blagodarnyy, I. N. Blekhman, M. P. Yukunin

United States Navy: Publications

"From these tests, we established that artificially and naturally fed ticks are susceptible to the infective source and preserve tuberculosis mycobacteria in the body for a long period."


Analysis Of Pesticide Residues By Polarography, Raymond J. Gajan Oct 1965

Analysis Of Pesticide Residues By Polarography, Raymond J. Gajan

United States Food and Drug Administration: Publications

Polarography is a rapid, sensitive, and relatively specific technique that can be applied to pesticide residue analysis. The technique should also prove a valuable tool in overall pesticide research, such as monitoring new columns, studying kinetics, identifying and determining metabolites, assaying primary pesticide standards, and conducting stability studies.


Diphenylamine-Zinc Chloride As A Chromogenic Agent For The Detection Of A Mixture Of Ddt, Chlordane, And Toxaphene On Thin Layer Chromatograms, Lewis J. Faucheux Jr. Oct 1965

Diphenylamine-Zinc Chloride As A Chromogenic Agent For The Detection Of A Mixture Of Ddt, Chlordane, And Toxaphene On Thin Layer Chromatograms, Lewis J. Faucheux Jr.

United States Food and Drug Administration: Publications

Diphenylamine-ZnCI, has been evaluated as a chromogenic agent for detection of toxaphene, DDT, and chlordane on Al2O3 a thin layer plates. Characteristic colors were obtained for these pesticides; a lower level of about 5 μg was detectable. Color reactions of 34 pesticides at the 20 μg level are presented.


Pesticide Residues, J. William Cook, Sidney Williams Apr 1965

Pesticide Residues, J. William Cook, Sidney Williams

United States Food and Drug Administration: Publications

METHODOLOGY for residue analysis has advanced rapidly during the current review period, from November 1962 through October 1964. Notable progress has been made in the development and refinement of methods of analysis by which any or all of a large number of pesticide residue chemicals can be detected and measured in one general operation. This is of particular significance because great interest has developed-outside the scientific community as well as within - in the possible presence of pesticide chemicals in all parts of our environment, including man himself. Only by the use of improved methodology will it be possible to …


1965 Beef Cattle Progress Report Of Research Activities, E. F. Frolik, H. H. Kramer Jan 1965

1965 Beef Cattle Progress Report Of Research Activities, E. F. Frolik, H. H. Kramer

Nebraska Beef Cattle Reports

Beef carcass evaluation work is designed to obtain production and carcass data on bulls, steers and heifers. One objective is to evaluate sex effects on growth and carcass traits. Another is to determine if sires rank the same in growth and carcass traits on their bull, steer and heifer progeny.

Preliminary results from the 1963 slaughter groups were reported in the 1964 Beef Cattle Progress Report. This report covers averages of 1963 and 1964 results. Results both years were similar.


Review Of Echinococcus Species In South Africa, Anna Johanna Maria Verster Jan 1965

Review Of Echinococcus Species In South Africa, Anna Johanna Maria Verster

Harold W. Manter Laboratory of Parasitology: Faculty Publications

1. The nominate subspecies of E. granulosus (Batsch, 1786) is redesignated from the type locality, Europe.

2. Five subspecies of E. granulosus are described from South African carnivores: E. g. granulosus, E. g. africanus, E. g. felidis, E. g. lycaontis and E. g. ortleppi.

3. E. g. granulosus has so far only been recovered from the Transvaal; E. g. ortleppi appears to be restricted to the Transvaal; E. g. africanus occurs in the Orange Free State and the Transvaal; E. g. lycaontis and E. g. felidis like their definitive hosts are restricted to the Transvaal.

4. …


Namru-3 Translations Of Parasite Literature From Russian, French, Japanese, Etc. Into English (1942-1965): T101-T200, United States Naval Medical Research Unit Number Three, Cairo, Medical Zoology Department Jan 1965

Namru-3 Translations Of Parasite Literature From Russian, French, Japanese, Etc. Into English (1942-1965): T101-T200, United States Naval Medical Research Unit Number Three, Cairo, Medical Zoology Department

United States Naval Medical Research Unit 3: Publications

T101. TRANSLATION FROM JAPANESE. CHIKAKI, H. and OTAKE, A. (1956). Ecology of ticks attacking cattle in a pasture. Jap, J. Appl. Zool., 21(2):53-62.

T102. TRANSLATION FROM RUSSIAN. SOKOLOV, L. I. (1945). Karyological study of some Acari and the problem of sex determination in the group Izv. Akad. Nauk SSR, s. Biol, (6):654-663.

T103. TRANSLATION FROM RUSSIAN. ABRAMOV, I. V. (1955). The duration of preservation of the agent of equine piroplasmosis (Piroplasma caballi) in ticks Hyalomma plumbeum Panzer. 1795. Vestn. Sel. -Khoz. Nauki, Moskva, s. g, 32(3):42-46.

T104. TRANSLATION FROM RUSSIAN. BELIKOVA, N. P. and TATARINOVA, L. G. (1960). On the …


Exposure To Parathion Effect On General Population And Asthmatics, Robert S. Ganelin, Cipriano Cueto Jr., G. Allen Mail Jun 1964

Exposure To Parathion Effect On General Population And Asthmatics, Robert S. Ganelin, Cipriano Cueto Jr., G. Allen Mail

United States Food and Drug Administration: Publications

There has been much lay and medical concern regarding toxic effects of insecticides on the general population. In addition to direct toxic effects, it is suspected that insecticidal application has deleterious physical effects on persons with respiratory diseases. To evaluate some of these problems, the authors have attempted to quantitate actual absorption, symptoms, and laboratory evidence of intoxication in persons with varying degrees of exposure to parathion. By means of controlled observations, the respiratory effect of application of this compound on persons with bronchial asthma was also measured. The results suggest that the effect of this chemical on the general …


Beef Cattle Progress Report, E. F. Frolik, H. H. Kramer Jan 1964

Beef Cattle Progress Report, E. F. Frolik, H. H. Kramer

Nebraska Beef Cattle Reports

Efficiency of sugar beet farming can be improved by feeding beet top silage to livestock.

In two recent trials at the Scotts Bluff Experiment Station lambs fed unwilted beet top silage as the only roughage gained significantly faster than lambs fed corn silage.

Amounts of concentrates were comparable (Nebraska Experiment Station Quarterly, Fall, 1962).

This experiment compared the feeding value of a complete mixture of unwilted beet tops and concentrate added at the time of ensiling, with beet top silage and concentrate handled separately. A conventional corn silage and concentrate ration was used as a control.

Results showed that a …


Viral Infections Of Domestic Animals, George A. Young Jan 1964

Viral Infections Of Domestic Animals, George A. Young

School of Veterinary and Biomedical Sciences: Faculty Publications

There is a strong tendency in current research on mammalian virus diseases to concentrate on virus activity at a cellular or subcellular level. This trend is summarized adequately by Enders in relation to viral replication as follows: ','The large and ever-increasing volume of published experimental work on viral replication strikingly reveals the central position of this phenomenon in contemporary virological research. There are good reasons, both biological and practical, underlying this intensive effort to understand, i n detail, how a virus particle, without energy transforming apparatus of its own, manages to utilize the metabolic equipment of the cell to produce …


Viral Infections Of Domestic Animals, George A. Young Jan 1964

Viral Infections Of Domestic Animals, George A. Young

School of Veterinary and Biomedical Sciences: Faculty Publications

Contents
Health-Defined Animals 270
Immunity in Health-Defined Animals 272
Virus Infections During Gestation 275
Respiratory Infections 279
Influenza 279
Ascariasis enhancement of respiratory infections 280
Virus pneumonia of pigs 281
Infectious atrophic rhinitis of swine 282
Porcine inclusion body rhinitis 283
Infectious bovine rhinotracheitis 283
Bovine myxovirus parainfluenza 284
Infectious bovine keratoconjunctivitis 284
Enteric Infections 285
Swine polio-encephalomyelitis viruses 285
Transmissible gastroenteritis of swine 286
Beran’s swine enterovirus 287
Bovine virus diarrhea 287
Systemic Diseases 288
Hog cholera 288
African swine fever 290
Nebraska University disease 290
Swine edema disease 291
Exudative epidermitis of swine 292
Foot-and-mouth disease and rinderpest …


Namru-3 Translations Of Parasite Literature From Russian, French, Japanese, Etc. Into English (1934-1964): T1-T100, United States Naval Medical Research Unit Number Three, Cairo, Medical Zoology Department Jan 1964

Namru-3 Translations Of Parasite Literature From Russian, French, Japanese, Etc. Into English (1934-1964): T1-T100, United States Naval Medical Research Unit Number Three, Cairo, Medical Zoology Department

United States Naval Medical Research Unit 3: Publications

T8. TRANSLATION FROM RUSSIAN. POSPELOVA-SHTROM, M. V. (1945). Concerning certain groups within the genus Haemaphysalis C. L. Koch, and their taxonomic significance. Med. Parasit., Moscow, 14(1):12-18.

T9. TRANSLATION FROM RUSSIAN. LOTOTSKY, B. V. (1956). On the morphology of Haemaphysalis pavlovskyi Pospelova-Shtrom, 1934 (Parasitiformes, Ixodidae). Zool. Zh., 35(9):1415-1417.

T10. TRANSLATION FROM RUSSIAN. KUCHERUK, V. V., SIDOROVA, G. A. and ZHMAEVA, Z. M. (1955). On the self protection of small rodents against tick (Ixodidae) larvae. Zool. Zh., 34(4):948-950.

T11. TRANSLATION FROM JAPANESE. SUGIMOTO, M. (1937). Notes on ticks in the Formosan Mountain Reservation for aborigines. J. Centr. Soc. Vet. Med. Tokyo, 50:303-340. …


The Development In Vitro And In Vivo Of Fusion Of The Palatal Processes Of Rat Embryos, Thomas Moriarty, Sam Weinstein, R. D. Gibson Sep 1963

The Development In Vitro And In Vivo Of Fusion Of The Palatal Processes Of Rat Embryos, Thomas Moriarty, Sam Weinstein, R. D. Gibson

College of Dentistry: Faculty Publications

The congenital anomaly of cleft palate can now be reproduced by a variety of teratogenetic agents in a number of laboratory animals (Kalter & Warkany, 1959). Through the use of the induced cleft palate numerous studies have been directed toward detecting the developmental mishaps which create this defect. The work of Fraser et al. (1957) suggested that various positional factors of the developing palatal and facial structures may be the underlying cause for failure of palatal closure in mouse embryos. Walker & Fraser (1956) observed elastic fibers among the palatal processes of mouse embryos which they suggested might impart a …


Beef Cattle Progress Report, E. F. Frolik, H. H. Kramer Jan 1963

Beef Cattle Progress Report, E. F. Frolik, H. H. Kramer

Nebraska Beef Cattle Reports

Shipping fever is a respiratory disease "complex" of cattle. The disease causes extensive economic losses from death, loss of physical condition, inefficient feed utilization and treatment expense. The annual loss from this disease in the United States has been estimated to be $25,000,000.

In many respects shipping fever is similar to respiratory diseases of humans. It may occur in any season of the year, but is most common in the fall and early winter. Although any age animal may be infected recently weaned calves and feeder cattle which have just been moved from the range to feedlot are most susceptible.