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Author |
Bottoms, G.D.; Roesel, O.F.; Rausch, F.D.; Akins, E.L. |
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Title |
Circadian variation in plasma cortisol and corticosterone in pigs and mares |
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Journal Article |
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Year |
1972 |
Publication |
American Journal of Veterinary Research |
Abbreviated Journal |
Am J Vet Res |
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Volume |
33 |
Issue |
4 |
Pages |
785-790 |
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Keywords |
Animals; *Circadian Rhythm; Corticosterone/*blood; Female; Horses/*metabolism; Hydrocortisone/*blood; Methods; Swine/*metabolism; Time Factors |
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English |
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0002-9645 |
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PMID:5017871 |
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Call Number  |
Equine Behaviour @ team @ |
Serial |
4074 |
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Author |
Bradley, B.L. |
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Title |
Animal flavor types and their specific uses in compound feeds by species and age |
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Journal Article |
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Year |
1980 |
Publication |
Fortschritte in der Tierphysiologie und Tierernahrung |
Abbreviated Journal |
Fortschr Tierphysiol Tierernahr |
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Volume |
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Issue |
11 |
Pages |
110-122 |
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Keywords |
Aging; *Animal Feed; Animals; Cattle; Energy Intake; *Flavoring Agents; Horses; Poultry; Smell; Species Specificity; Sweetening Agents; Swine; Taste |
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English |
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ISSN |
0301-570X |
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Notes |
PMID:7390352 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4314 |
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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)] |
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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 |
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Call Number |
Admin @ knut @ |
Serial |
22 |
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Author |
Krcmar, S.; Mikuska, A.; Merdic, E. |
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Title |
Response of Tabanidae (Diptera) to different natural attractants |
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Journal Article |
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Year |
2006 |
Publication |
Journal of Vector Ecology : Journal of the Society for Vector Ecology |
Abbreviated Journal |
J Vector Ecol |
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Volume |
31 |
Issue |
2 |
Pages |
262-265 |
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Keywords |
Animals; Appetitive Behavior/*physiology; Cattle/urine; Diptera/*physiology; Female; Horses/urine; Insect Control/methods; Sheep/urine; Swine/urine; Urine/*physiology |
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Abstract |
The response of female tabanids to natural attractants was studied in the Monjoros Forest along the Nature Park Kopacki rit in eastern Croatia. Tabanids were caught in canopy traps baited with either aged cow, horse, sheep, or pig urine and also in unbaited traps. Tabanids were collected in a significantly higher numbers in traps baited with natural attractants compared to unbaited traps. The number of females of Tabanus bromius, Tabanus maculicornis, Tabanus tergestinus, and Hybomitra bimaculata collected from canopy traps baited with cow urine and traps baited with other natural attractants differed significantly. Females of Haematopota pluvialis were also collected more frequently in canopy traps baited with aged cow urine than in those with aged horse urine, but this difference was not significant. However, the number of females of Haematopota pluvialis collected from canopy traps baited with other natural attractants (sheep and pig urine) differed significantly when compared with aged cow urine baited traps. Canopy traps baited with aged cow urine collected significantly more Tabanus sudeticus than did traps baited with aged pig urine. Finally, the aged cow urine baited canopy traps collected 51 times more tabanids than unbaited traps, while aged horse, aged sheep, and aged pig urine baited traps collected 36, 30, and 22 times as many tabanids, respectively, than unbaited traps. |
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Address |
Department of Biology, JJ Strossmayer University, Lj. Gaja 6, HR-31000 Osijek, Croatia |
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English |
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ISSN |
1081-1710 |
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Notes |
PMID:17249343 |
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no |
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Call Number |
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Serial |
1836 |
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Author |
Meese, G.B.; Ewbank, R. |
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Title |
Exploratory behaviour and leadership in the domesticated pig |
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Journal Article |
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Year |
1973 |
Publication |
The British Veterinary Journal |
Abbreviated Journal |
Br. Vet. J. |
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Volume |
129 |
Issue |
3 |
Pages |
251-259 |
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Keywords |
Animals; Animals, Domestic; Behavior, Animal; Castration; *Exploratory Behavior; Female; *Leadership; Male; Sex Factors; Social Behavior; *Swine |
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English |
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Abbreviated Series Title |
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Series Volume |
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Edition |
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ISSN |
0007-1935 |
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Notes |
PMID:4728194 |
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Call Number |
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Serial |
2052 |
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