Records |
Author |
Bouman Jg, |
Title |
Does inbreeding ocur in free living horses? |
Type |
Book Chapter |
Year |
1979 |
Publication |
Genetics and Hereditary Diseases of the Przewalski horse |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
125-132 |
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Abstract |
Boer, Leobert E.M. de, and Jan & Inge Bouman, eds. Genetics and Hereditary Diseases of the Przewalski Horse. Rotterdam: Foundation for the Preservation and Protection of the Przewalski Horse 1979. 176p, several photos and charts. Reproduced from typescript, as issued. Very good paperbound (covers shelf-soiled). ** Publishes 18 papers given at the Arnhem Study-Conference of 1978, on many aspects of breeding Przewalski horses, their behavior, etc. |
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Publisher |
Foundation for the Preservation and Protection of the Przewalski Horse |
Place of Publication |
Rotterdam |
Editor |
de Boer, L.E.M. ; Bouman,J; Bouman, I |
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Notes |
from Professor Hans Klingels Equine Reference List |
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no |
Call Number |
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Serial |
956 |
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Author |
Bouman-Heinsdijk I, |
Title |
Does inbreeding occur in free living horses? |
Type |
Book Chapter |
Year |
1979 |
Publication |
Genetics and Hereditary Diseases of the Przewalski Horse |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
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Keywords |
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Abstract |
Boer, Leobert E.M. de, and Jan & Inge Bouman, eds. Genetics and Hereditary Diseases of the Przewalski Horse. Rotterdam: Foundation for the Preservation and Protection of the Przewalski Horse 1979. 176p, several photos and charts. Reproduced from typescript, as issued. Very good paperbound (covers shelf-soiled). ** Publishes 18 papers given at the Arnhem Study-Conference of 1978, on many aspects of breeding Przewalski horses, their behavior, etc. |
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Corporate Author |
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Thesis |
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Publisher |
Foundation for the Preservation and Protection of the Przewalski Horse |
Place of Publication |
Rotterdam |
Editor |
de Boer, L.E.M. ; Bouman,J; Bouman, I |
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Notes |
from Professor Hans Klingels Equine Reference List |
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no |
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Serial |
958 |
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Author |
Czerlinski, G.H.; Erickson, J.O.; Theorell, H. |
Title |
Chemical relaxation studies on the horse liver alcohol dehydrogenase system |
Type |
Journal Article |
Year |
1979 |
Publication |
Physiological Chemistry and Physics |
Abbreviated Journal |
Physiol Chem Phys |
Volume |
11 |
Issue |
6 |
Pages |
537-569 |
Keywords |
Alcohol Oxidoreductases/*metabolism; Animals; Buffers; Electron Transport; Ethanol/metabolism; Horses; Hydrogen-Ion Concentration; Liver/*enzymology; Mathematics; NAD/metabolism; Oscillometry; Osmolar Concentration; Temperature; Time Factors |
Abstract |
Chemical relaxation studies on the system horse liver alcohol dehydrogenase, nicotinamide adenine dinucleotide, and ethanol were conducted observing fluorescence changes between 400 and 500 nm. Temperature-jump experiments were performed at pH 6.5, 7.0, 8.0, and 9.0; concentration-jump experiments at pH 9.0. The reciprocal of the slowest relaxation time was found to be linearly dependent upon the enzyme concentration for relatively low enzyme concentrations, as predicted earlier. Use of the wide pH-range necessitated expression of the four apparent dissociation constants of the catalytic reaction cycle in terms of pH-independent constants. The system was described in terms of only one (or two) catalysis-linked protons not associated with the electron transfer. Protonic steps in a buffered system are in rapid equilibrium, too fast to be measured with the equipment available. Assuming only two of the four bimolecular reaction steps in the four-step cycle are fast compared to the remaining two, six cases may be considered with six expressions for the reciprocal of the slowest relaxation time. Comparison with the experimental data revealed that the bimolecular reaction steps governing the slowest relaxation time change with pH. Above the effective time resolution of the temperature-lump instrument with fluorescence detection (0.1 msec) only one other relaxation time was detectable and only at pH 9. This relaxation time, found to be independent of the concentration of all reactants within experimental error (r = 10 +/- 5 msec), is most likely due to an interconversion among ternary complexes. |
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English |
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ISSN |
0031-9325 |
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Notes |
PMID:44918 |
Approved |
no |
Call Number |
Equine Behaviour @ team @ |
Serial |
3813 |
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Author |
Rappolt, G. A.; John, J.; Thompson, N. S. |
Title |
Canine responses to familiar and unfamiliar humans |
Type |
Journal Article |
Year |
1979 |
Publication |
Aggressive Behavior |
Abbreviated Journal |
Aggressive Behavior |
Volume |
5 |
Issue |
2 |
Pages |
155-161 |
Keywords |
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Abstract |
Dogs were observed during controlled approaches by their owners and by strangers. Significant differences between the dogs' responses to their owners and their responses to strangers were found. These results supported the popular belief that dogs respond differently to different persons, and not merely to different situations in which persons are usually encountered. |
Address |
Departments of Biology and Psychology, Clark University, Worcester, Massachusetts DOI – 10.1002/1098-2337(1979)5 – 2<155 – - AID-AB2480050206>3.0.CO;2-D |
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Copyright © 1979 Wiley-Liss, Inc., A Wiley Company |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4978 |
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Author |
Clutton-Brock, T.H.; Albon, S.D.; Gibson, R.M.; Guinness, F.E. |
Title |
The logical stag: Adaptive aspects of fighting in red deer (Cervus elaphus L.) |
Type |
Journal Article |
Year |
1979 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
Volume |
27 |
Issue |
Part 1 |
Pages |
211-225 |
Keywords |
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Abstract |
For red deer stags, fighting both has appreciable costs and yields considerable benefits. Up to 6% of rutting stags are permanently injured each year, while fighting success and reproductive success are closely related, within age groups as well as across them. Fighting behaviour is sensitive to changes in the potential benefits of fighting: stags fight most frequently and most intensely where potential benefits are high and tend to avoid fighting with individuals they are unlikely to beat. The relevance of these findings to theoretical models of fighting behaviour is discussed. |
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no |
Call Number |
refbase @ user @ |
Serial |
860 |
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Author |
Kordal, R.J.; Parsons, S.M. |
Title |
Liver alcohol dehydrogenase subunit equivalence studied by rapid sampling of alcohol product formed from sequentially bound [4α-3H]NADH |
Type |
Journal Article |
Year |
1979 |
Publication |
Archives of Biochemistry and Biophysics |
Abbreviated Journal |
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Volume |
194 |
Issue |
2 |
Pages |
439-448 |
Keywords |
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Abstract |
Horse liver alcohol dehydrogenase has been claimed to exhibit presteady-state “half-of-the-sites” reactivity with aromatic substrates under some circumstances. To clarify the role of half-of-the-sites reactivity in liver alcohol dehydrogenase the direct sampling of the alcohol product formed immediately after initiation of the reaction was studied using a rapid sampling device and [4α-3H]NADH. Liver alcohol dehydrogenase which contained a very low mole-ratio of [4α-3H]NADH bound to one subunit of the dimer was rapidly mixed with excess 4-(2'-imidazolylazo)benzaldehyde substrate and nonradioactive NADH to initiate the reaction, which was allowed to proceed for a short time before it was quenched. If strong HClO4 quench was used isolation of total free and bound azoalcohol product was possible. If NaOH quench was used isolation only of the azoalcohol product released by the enzyme was possible since most enzyme-bound azoalcohol was reversed back to azoaldehyde by the base. The pH-jump reversal reaction also was characterized spectroscopically by stopped flow technique. Nearly fullsites reactivity was observed for reaction in either direction. Furthermore (4α-3H]NADH bound firstly to one subunit in the dimer reacted essentially identically to NADH bound secondly to the other subunit. Thus, half-of-the-sites reactivity was not observed in these experiments nor did they give any indication of liver alcohol dehydrogenase active site nonequivalence induced by coenzyme binding or reaction. |
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no |
Call Number |
refbase @ user @ |
Serial |
3983 |
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Author |
Kacelnik, A. |
Title |
The foraging efficiency of great tits (Parus major L.) in relation to light intensity |
Type |
Journal Article |
Year |
1979 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
Volume |
27 |
Issue |
Part 1 |
Pages |
237-241 |
Keywords |
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Abstract |
I report an experiment aimed at testing whether foraging efficiency of great tits is limited by light intensity at the time of the dawn chorus. Captive great tits hunting for prey under different luminance conditions were less successful in finding prey when foraging, hunted for a lower proportion of their time, and handled individual prey items for longer when luminance was under approximately 7 cd/m2. This luminance is not reached in the field until after the time of the dawn chorus, suggesting that in the early morning foraging is limited by light intensity. I suggest that a satisfactory functional explanation of the dawn chorus must take into account the comparatively low foraging opportunity early in the morning, as well as the factors affecting the opportunity for singing and other territorial activities. |
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2125 |
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Author |
Turpeinen, O. |
Title |
Effect of cholesterol-lowering diet on mortality from coronary heart disease and other causes |
Type |
Journal Article |
Year |
1979 |
Publication |
Circulation |
Abbreviated Journal |
Circulation |
Volume |
59 |
Issue |
1 |
Pages |
1-7 |
Keywords |
Coronary Disease/blood/*mortality/prevention & control; Dairy Products; *Dietary Fats; *Fats, Unsaturated; Finland; Humans; Hypercholesterolemia/complications/*diet therapy/mortality; Male; Middle Aged; Neoplasms/mortality |
Abstract |
International statistics indicate that there is a close correlation between the consumption of saturated fats (dairy fats and meat fats) and the mortality from coronary heart disease (CHD), and this conception has been confirmed by many epidemiological studies. Such studies alone, however, cannot prove the existence of a cause-and-effect relationship between these two variables; dietary intervention trials are needed. The Finnish Mental Hospital Study was such a trial, conducted in two hospitals near Helsinki in 1959--1971. Practically total replacement of dairy fats by vegetable oils in the diets of these hospitals was followed by a substantial reduction in the mortality of men from CHD. Total mortality also appeared to be reduced. As to the causes of death other than CHD, none was significantly influenced by dietary change. This was also true for malignant neoplasms. To alleviate the burden of CHD on public health, many investigators have recommended important changes in the quantity and quality of dietary fats. |
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English |
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ISSN |
0009-7322 |
ISBN |
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Notes |
PMID:758101 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
33 |
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Author |
Asa, C.S.; Goldfoot, D.A.; Ginther, O.J. |
Title |
Sociosexual behavior and the ovulatory cycle of ponies (Equus caballus) observed in harem groups |
Type |
Journal Article |
Year |
1979 |
Publication |
Hormones and Behavior |
Abbreviated Journal |
Horm Behav |
Volume |
13 |
Issue |
1 |
Pages |
49-65 |
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Abstract |
Observations of sociosexual behavior of adult ponies, made on two harem groups (each comprised of one vasectomized male and three females), were correlated with follicular development and ovulation for a total of 15 cycles (minimum of 2 cycles per female). Mean cycle length (interovulatory interval) was found to be 19.7 days, with behavioral estrus lasting 7-8 days (5.5 days preovulatory; 2.3 days postovulatory). Estrous females typically showed increased frequencies of approaching and following the stallion, urinating, presenting, clitoral winking, and tail raising. Approaching and following the stallion appeared earlier and persisted longer than other estrous responses. Deviations from the modal estrous pattern included cycles with subestrus, continual estrus, behavioral estrus in the absence of ovulation, and displays of female mounting. Dominance tests revealed that a mare's status was unaffected by the phases of the estrous cycle. The presence of more than one estrous female affected the copulatory performance of both stallions, most notably in reduced latencies to first mount, intromission, and ejaculation, in spite of differences between the stallions in sexual vigor. Each stallion usually selected the dominant mare for copulation when there were multiple estrous females present, but mounts were not displayed exclusively to one female per test. The social testing situation made apparent the importance of use of space in sociosexual communication in this species, particularly in avoidance of the stallion by diestrous mares and standing alone or in proximity to him by estrous mares. |
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0018-506x |
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Equine Behaviour @ team @ |
Serial |
5363 |
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Author |
Ribeiro, H.S.; Larangeira, N.L.; Paiva, F. |
Title |
[Prevalence of Dictyocaulus arnfieldi (Cobbald, 1884) Railiet & Henry 1907, in Pantaneira breed horses of the region of Pocone, MT] |
Type |
Journal Article |
Year |
1979 |
Publication |
Arquivos do Instituto Biologico |
Abbreviated Journal |
Arq Inst Biol (Sao Paulo) |
Volume |
46 |
Issue |
3-4 |
Pages |
107-110 |
Keywords |
Animals; Brazil; Dictyocaulus/*isolation & purification; Ecology; Female; Horses/*parasitology; Male; Metastrongyloidea/*isolation & purification; Seasons |
Abstract |
The authors sacrificed fifty-five horses originated from the “Pantanal”, lowlands in the State of Mato Grosso in two different periods, droughty period and flooded and they described for the first time the Dictyocaulus arnfieldi in Mato Grosso. Relationship between droughty and flooded periods proved not to occur. |
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Portuguese |
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Original Title |
Prevalencia de Dictyocaulus arnfieldi (Cobbald, 1884) Railiet & Henry 1907, em cavalos de raca pantaneira da regiao de Pocone, MT |
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0020-3653 |
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PMID:554599 |
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Equine Behaviour @ team @ |
Serial |
2693 |
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