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Author |
Munoz-Sanz, A. |
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Title |
[Christopher Columbus flu. A hypothesis for an ecological catastrophe] |
Type |
Journal Article |
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Year |
2006 |
Publication |
Enfermedades Infecciosas y Microbiologia Clinica |
Abbreviated Journal |
Enferm Infecc Microbiol Clin |
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Volume |
24 |
Issue |
5 |
Pages |
326-334 |
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Keywords |
Animals; Atlantic Islands; Birds; Chickens; Disease Outbreaks/*history; Disease Reservoirs; Disease Susceptibility; Ecology; Europe/ethnology; History, 15th Century; Horses; Humans; Indians, South American; Influenza A virus/classification/genetics/pathogenicity; Influenza in Birds/epidemiology/history/transmission/virology; Influenza, Human/epidemiology/*history/mortality/transmission; Models, Biological; Orthomyxoviridae Infections/epidemiology/history/veterinary/virology; Poultry Diseases/epidemiology/history/transmission/virology; Reassortant Viruses/genetics/pathogenicity; Species Specificity; Sus scrofa; Swine Diseases/history/transmission/virology; Terminology; West Indies/epidemiology |
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Abstract |
When Christopher Columbus and his men embarked on the second Colombian expedition to the New World (1493), the crew suffered from fever, respiratory symptoms and malaise. It is generally accepted that the disease was influenza. Pigs, horses and hens acquired in Gomera (Canary Islands) traveled in the same ship. The pigs may well have been the origin of the flu and the intermediary hosts for genetic recombination of other viral subtypes. The Caribbean archipelago had a large population of birds, the natural reservoir of the avian influenza virus. In this ecological scenario there was a concurrence of several biological elements that had never before coexisted in the New World: pigs, horses, the influenza virus and humans. We propose that birds are likely to have played an important role in the epidemiology of the flu occurring on the second Colombian trip, which caused a fatal demographic catastrophe, with an estimated mortality of 90% among the natives. |
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Address |
Unidad de Patologia Infecciosa, Hospital Universitario Infanta Cristina, Servicio Extremeno de Salud, Universidad de Extremadura, Badajoz, Espana. infectio@unex.es |
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Spanish |
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Original Title |
La gripe de Cristobal Colon. Hipotesis sobre una catastrofe ecologica |
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0213-005X |
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Notes |
PMID:16762260 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2624 |
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Author |
Nosek, J. |
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Title |
The ecology and public health importance of Dermacentor marginatus and D. reticulatus ticks in Central Europe |
Type |
Journal Article |
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Year |
1972 |
Publication |
Folia Parasitologica |
Abbreviated Journal |
Folia Parasitol (Praha) |
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Volume |
19 |
Issue |
1 |
Pages |
93-102 |
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Keywords |
Animals; Arthropod Vectors; Birds; Cattle; Czechoslovakia; Deer; Dermacentor/physiology; Dogs; Ecology; Encephalitis, Tick-Borne; Europe; Female; Goats; Horses; Insectivora; Male; Mice; Rodentia; Sheep; Swine; *Ticks |
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English |
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ISSN |
0015-5683 |
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Notes |
PMID:4670812 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2720 |
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Author |
Nowlan, S.S.; Deibel, R.H. |
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Title |
Group Q streptococci. I. Ecology, serology, physiology, and relationship to established enterococci |
Type |
Journal Article |
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Year |
1967 |
Publication |
Journal of Bacteriology |
Abbreviated Journal |
J Bacteriol |
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Volume |
94 |
Issue |
2 |
Pages |
291-296 |
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Keywords |
Animals; Antigens/analysis; Cattle; Dogs; Enterococcus faecalis/metabolism; Feces/microbiology; Horses; Humans; Poultry; Precipitin Tests; Rabbits; Sheep; *Streptococcus/immunology/isolation & purification/metabolism; Swine |
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Abstract |
The group Q streptococci possess unique serological and physiological characteristics which differentiate them from established enterococci. The group Q antigen was not demonstrable in all strains; however, all possessed the group D antigen. All group Q strains were physiologically similar regardless of whether or not they possessed the group Q antigen. These strains differed from the established enterococcal species, as they neither hydrolyzed arginine nor initiated growth in 1.0% methylene blue-milk. They also differed radically in the fermentation of various carbohydrates, especially the polyhydric sugar alcohols. The results indicate that the group Q streptococci constitute a unique taxonomic entity; the species designation Streptococcus avium sp. n. is suggested, owing to their characteristic occurrence in chicken fecal specimens. |
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English |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0021-9193 |
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Notes |
PMID:4962699 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2746 |
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Author |
Pere, M.C. |
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Title |
Maternal and fetal blood levels of glucose, lactate, fructose, and insulin in the conscious pig |
Type |
Journal Article |
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Year |
1995 |
Publication |
Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci. |
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Volume |
73 |
Issue |
10 |
Pages |
2994-2999 |
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Keywords |
Animals; Blood Glucose/*analysis; Catheterization/methods/veterinary; Consciousness/physiology; Female; Fetal Blood/*chemistry; Fructose/analysis/*blood; Insulin/analysis/*blood; Lactates/analysis/*blood; Pregnancy; Swine/*blood/physiology |
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Abstract |
To study nutrition and metabolism in the fetal pig, a chronic catheterization method was developed that allows blood sampling in arteries and veins, at both the umbilical and uterine sources, in the conscious, unstressed animal. A catheter was inserted in the fetal aorta through a femoral artery, and another one was introduced in the umbilical vein. A catheter was put in a femoral artery of the sow so that its end was in the abdominal aorta. A fourth catheter was placed in a uterine vein draining the fetoplacental unit studied. This procedure was applied to 18 Large White primiparous sows at 99 d of gestation. Blood samples were drawn simultaneously using the four catheters before a meal at 103 d of pregnancy, and glucose, insulin, lactate, and fructose were determinated. Glycemia was 2.5 times higher in the sow than in the fetus. The extraction coefficient of glucose by the fetus amounted to 14% of the umbilical supply. The insulin level in the fetal pig was very low ( < 5 microU/mL). Lactate and fructose seemed to originate from the placenta. Blood lactate was 2.6 times lower in the sow than in the fetus, and its extraction coefficient by the fetus amounted to 8%. Fructose in the fetal blood was 2.3 times higher than that of glucose. Fructose was not utilized by the pig fetus. The present results obtained in the fetal pig are comparable to the conclusions drawn from studies with other species. |
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Station de Recherches Porcines, Institut National de la Recherche Agronomique, Saint-Gilles, France |
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English |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0021-8812 |
ISBN |
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Notes |
PMID:8617670 |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2751 |
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Author |
Pitchford, R.J.; Visser, P.S.; du Toit, J.F.; de Pienaar, U.V.; Young, E. |
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Title |
Observations on the ecology of Schistosoma mattheei Veglia & Le Roux, 1929, in portion of the Kruger National Park and surrounding area using a new quantitative technique for egg output |
Type |
Journal Article |
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Year |
1973 |
Publication |
Journal of the South African Veterinary Association |
Abbreviated Journal |
J S Afr Vet Assoc |
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Volume |
44 |
Issue |
4 |
Pages |
405-420 |
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Keywords |
Animals; Artiodactyla; Buffaloes; Cattle; Cattle Diseases/epidemiology; Dog Diseases/epidemiology; Dogs; Feces; Goats; Haplorhini; Horse Diseases/epidemiology; Horses; Humans; Methods; Monkey Diseases/epidemiology; Papio; Parasite Egg Count; Schistosomiasis/epidemiology/*veterinary; Sheep; Sheep Diseases/epidemiology; South Africa; Swine; Swine Diseases/epidemiology |
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English |
Summary Language |
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Original Title |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1019-9128 |
ISBN |
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Notes |
PMID:4212207 |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2711 |
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Author |
Puppe, B. |
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Title |
[Social dominance and rank relationships in domestic pigs: a critical review] |
Type |
Journal Article |
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Year |
1996 |
Publication |
Berliner und Munchener Tierarztliche Wochenschrift |
Abbreviated Journal |
Berl Munch Tierarztl Wochenschr |
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Volume |
109 |
Issue |
11-12 |
Pages |
457-464 |
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Keywords |
Animals; Animals, Domestic; Animals, Wild; Female; Male; Models, Psychological; *Social Behavior; *Social Dominance; Swine/*psychology |
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Abstract |
Viewing dominance as an attribute of repeated agonistic interactions between two individuals, the present paper reviews theoretical approaches towards concepts of dominance, methods of measurement, and basic principles and problems connected with social dominance in domestic pigs. Domestic pigs are able to establish social organization structures during all stages of their ontogeny. According to definition, dominance relationships occur when a consistent asymmetry of the result of dyadic agonistic interactions can be assessed. This must not necessarily be connected immediately with a better availability of resources, or a high stability of existing dominance relationships, or a functional definition of dominance. When sociometric characteristics are calculated, it seems to be appropriate to use them for different levels of a biological system (individual, individual pair, group). Investigations of social behaviour and dominance in farm animals should take into account that mechanisms of social behaviour in confined environments are often carried out in parts only. Connections of the dominance concept with other concepts of behavioural regulation should be theoretically considered and further investigated by experimental studies. |
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Address |
Forschungsbereich Physiologische Grundlagen der Tierhaltung des Forschungsinstituts fur die Biologie landwirtschaftlicher Nutztiere Dummerstorf-Rostock |
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Language |
German |
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Original Title |
Soziale Dominanz- und Rangbeziehungen beim Hausschwein: eine kritische Ubersicht |
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Edition |
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ISSN |
0005-9366 |
ISBN |
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Notes |
PMID:8999780 |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2861 |
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Author |
Rodier, F. |
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Title |
[Spectral properties of porcine plasminogen: study of the acidic transition (author's transl)] |
Type |
Journal Article |
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Year |
1976 |
Publication |
European journal of biochemistry / FEBS |
Abbreviated Journal |
Eur J Biochem |
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Volume |
63 |
Issue |
2 |
Pages |
553-562 |
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Keywords |
Animals; Binding Sites; Guanidines; Hydrogen-Ion Concentration; *Plasminogen; Protein Binding; Protein Conformation; Spectrometry, Fluorescence; Spectrophotometry; Spectrophotometry, Ultraviolet; Swine; Temperature |
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Abstract |
The acidic transition of porcine plasminogen, prepared by affinity chromatography, was studied by non-destructive methods. These methods are based on the analysis of the behaviour of the tryptophyls under various conditions. The perturbation of the absorption and emission spectra by pH or temperature and the dynamic quenching of the intrinsic fluorescence are used to obtain information on structural changes which affect the environment of these residues. It is shown that by decreasing pH the fluorescence emission spectra are shifted toward the long wavelengths, with a broadening of the fluorescence band. The same effect can be obtained at constant pH by heating the protein solution. In order to analyze these phenomena, it is assumed that the fluorescence intensities at 355 nm and 328 nm reflect the proportion of the tryptophans which are exposed to the solvent, and buried, respectively. The plot of the ratio of the fluorescence intensities at these wavelengths versus pH or temperature leads to a titration curve showing an unmasking of tryptophans. The proportion of exposed tryptophans is measured by the dynamic fluorescence quenching technique and the data analyzed according to Lehrer. The plot of the fraction of exposed tryptophyls versus pH also shows the unmasking of these chromophores. Thermal perturbation of a solution of plaminogen at neutral pH induces a difference absorption spectrum whose amplitudes at the maxima are proportional to the number of exposed aromatic residues. The comparison with a solution of fully denatured plasminogen in 6 M guanidium chloride, where all the tryptophyls are exposed, shows that the percentage of exposure is equal to 59%. This number is significantly higher than the percentage found by the fluorescence quenching technique (20%), indicating that some tryptophyls are located in crevices, exposed to the solvent but not to the iodide. At acidic pH the absorption difference spectra induced by thermal perturbation are not classical, since they show an inversion and a new band between 300 nm and 305 nm. This band is mentioned in the literature as a minor band of tryptophan which appears when this chromophore is located in an asymmetric environment. On plotting the maximum amplitude of these spectra obtained at acidic pH versus temperature, we obtain a curve indicating that two types of antagonistic interactions are involved in the perturbation of the chromophores spectra. The spectrophotometric titration of plasminogen gives classical absorption difference spectra. By plotting the maximum amplitude at 292 nm versus pH, we obtain a titration curve with an apparent pK of 2.9 units. This pK is acidic which respect to the pK value of a normal carboxyl. This low value can be due to a positively charged group in the neighbourhood of a carboxyl, which interacts with one or more chromophores. When the carboxyl becomes protonated, this positively charged group is free and available to perturb the environment of some chromophores... |
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Language |
French |
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Original Title |
Proprietes spectrales du plasminogene porcin. Etude de la transition acide |
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ISSN |
0014-2956 |
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Notes |
PMID:4326 |
Approved |
no |
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Call Number |
Admin @ knut @ |
Serial |
22 |
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Author |
Scherer, W.F.; Dickerman, R.W. |
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Title |
Ecologic studies of Venezuelan encephalitis virus in southeastern Mexico. 8. Correlations and conclusions |
Type |
Journal Article |
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Year |
1972 |
Publication |
The American Journal of Tropical Medicine and Hygiene |
Abbreviated Journal |
Am J Trop Med Hyg |
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Volume |
21 |
Issue |
2 |
Pages |
86-89 |
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Keywords |
Animals; Birds; Cattle; Chiroptera; Cricetinae; Culex; Culicidae; *Disease Reservoirs; Ecology; Encephalitis Virus, Venezuelan Equine/immunology; Encephalitis Viruses/*isolation & purification; Encephalomyelitis, Equine/epidemiology/*etiology; Horses; Humans; *Insect Vectors; Mammals; Mexico; Mice; Opossums; Rats; Swine |
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English |
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ISSN |
0002-9637 |
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Notes |
PMID:4399844 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2721 |
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Author |
Scherer, W.F.; Dickerman, R.W.; Ordonez, J.V. |
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Title |
Discovery and geographic distribution of Venezuelan encephalitis virus in Guatemala, Honduras, and British Honduras during 1965-68, and its possible movement to Central America and Mexico |
Type |
Journal Article |
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Year |
1970 |
Publication |
The American Journal of Tropical Medicine and Hygiene |
Abbreviated Journal |
Am J Trop Med Hyg |
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Volume |
19 |
Issue |
4 |
Pages |
703-711 |
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Keywords |
Animals; Antibodies/analysis; Belize; Central America; Complement Fixation Tests; Cricetinae; Culicidae; *Disease Reservoirs; Ecology; Encephalitis Viruses/isolation & purification; Encephalomyelitis, Equine/*epidemiology; Guatemala; Hemagglutination Inhibition Tests; Honduras; Horses; Humans; Mexico; Neutralization Tests; Rats; Sampling Studies; Swine; Tropical Climate |
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English |
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ISSN |
0002-9637 |
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Notes |
PMID:4393224 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2735 |
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Author |
Swanson, J.C. |
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Title |
Farm animal well-being and intensive production systems |
Type |
Journal Article |
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Year |
1995 |
Publication |
Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci. |
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Volume |
73 |
Issue |
9 |
Pages |
2744-2751 |
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Keywords |
Animal Husbandry/legislation & jurisprudence/*standards; Animal Rights/legislation & jurisprudence/standards; Animal Welfare/legislation & jurisprudence/*standards; Animals; Animals, Domestic/*growth & development/*physiology; Breeding/legislation & jurisprudence/*standards; Cattle; Chickens; Environment; Reproduction/physiology; Sheep; Swine |
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Abstract |
Animal welfare, or well-being, is a social issue with ethical, scientific, political, and aesthetic properties. Answering questions about the welfare of animals requires scientific definition, assessment, solutions, and public acceptance. With respect to the actual well-being of the animal, most issues are centered on how the animal “feels” when managed within a specific level of confinement, during special agricultural practices (e.g., tail docking, beak trimming, etc.) and handling. Questions of this nature may require exploration of animal cognition, motivation, perception, and emotional states in addition to more commonly recognized indicators of well-being. Several general approaches have emerged for solving problems concerning animal well-being in intensive production systems: environmental, genetic, and therapeutic. Environmental approaches involve modifying existing systems to accommodate specific welfare concerns or development of alternative systems. Genetic approaches involve changing the behavioral and (or) physiological nature of the animal to reduce or eliminate behaviors that are undesirable within intensive system. Therapeutic approaches of a physical (tail docking, beak trimming) and physiological (drug and nutritional therapy) nature bring both concern and promise with regard to the reduction of confinement stress. Finally, the recent focus on commodity quality assurance programs may indirectly provide benefits for animal well-being. Although research in the area of animal well-being will provide important information for better animal management, handling, care, and the physical design of intensive production systems there is still some uncertainty regarding public acceptance. The aesthetics of modern intensive production systems may have as much to do with public acceptance as with science. |
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Address |
Department of Animal Sciences and Industry, Kansas State University, Manhattan 66506, USA |
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English |
Summary Language |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0021-8812 |
ISBN |
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Notes |
PMID:8582867 |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2752 |
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