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Author |
Houpt, K.A. |
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Title |
Intelligence of the horse |
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Journal Article |
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Year |
1979 |
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Equine Pract. |
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1 |
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20-26 |
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Cited By (since 1996): 5; Export Date: 24 October 2008 |
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Call Number  |
Admin @ knut @ |
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4597 |
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Author |
Asa, C.S.; Goldfoot, D.A.; Ginther, O.J. |
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Title |
Sociosexual behavior and the ovulatory cycle of ponies (Equus caballus) observed in harem groups |
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Journal Article |
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Year |
1979 |
Publication |
Hormones and Behavior |
Abbreviated Journal |
Horm Behav |
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Volume |
13 |
Issue |
1 |
Pages |
49-65 |
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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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Call Number |
Equine Behaviour @ team @ |
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5363 |
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Author |
Keiper, R.R. |
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Title |
The behaviour, ecology and social organization of the feral ponies of Assateague Island |
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Journal Article |
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Year |
1979 |
Publication |
Proc. I. Conf. Sci. Res. Nat. Parks |
Abbreviated Journal |
Proc. I. Conf. Sci. Res. Nat. Parks, |
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University of Wyoming |
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Laramie |
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Equine Behaviour @ team @ |
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2309 |
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Author |
Sinclair, A.R.E. |
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Title |
Serengeti: Dynamics of an Ecosystem |
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Book Whole |
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Year |
1979 |
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Equine Behaviour @ team @ |
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2346 |
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Author |
Miller, R. |
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Title |
Band organisation and stability in Red Desert feral horses |
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Book Chapter |
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Year |
1979 |
Publication |
Proceedings of a Conference on the Ecology and Behavior of Feral Equids |
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113-123 |
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University of Wyoming. |
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Laramie |
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R.H. Denniston |
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Notes |
from Professor Hans Klingels Equine Reference List |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2361 |
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Author |
Ribeiro, H.S.; Larangeira, N.L.; Paiva, F. |
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Title |
[Prevalence of Dictyocaulus arnfieldi (Cobbald, 1884) Railiet & Henry 1907, in Pantaneira breed horses of the region of Pocone, MT] |
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Journal Article |
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Year |
1979 |
Publication |
Arquivos do Instituto Biologico |
Abbreviated Journal |
Arq Inst Biol (Sao Paulo) |
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Volume |
46 |
Issue |
3-4 |
Pages |
107-110 |
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Keywords |
Animals; Brazil; Dictyocaulus/*isolation & purification; Ecology; Female; Horses/*parasitology; Male; Metastrongyloidea/*isolation & purification; Seasons |
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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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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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Notes |
PMID:554599 |
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Equine Behaviour @ team @ |
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2693 |
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Author |
[No authors listed] |
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Title |
International Conference on Environmental Cadmium: an overview |
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Conference Article |
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Year |
1979 |
Publication |
Environmental Health Perspectives |
Abbreviated Journal |
Environ Health Perspect |
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28 |
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Pages |
297-30 |
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Animals; Cadmium/*toxicity; Cadmium Poisoning/metabolism; Congresses; Ecology; Environmental Exposure; Environmental Pollutants/*toxicity; Female; Forecasting; Haplorhini; Horses; Humans; Rats; Waste Disposal, Fluid |
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English |
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0091-6765 |
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PMID:39745 |
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Equine Behaviour @ team @ |
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2694 |
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Author |
Fiske, J.C. |
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Title |
Behavior and learning in horses Applications in management and training |
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Year |
1979 |
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Southwestern Veterinarian |
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Southwestern Veterinarian |
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32 |
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37-44 |
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Equine Behaviour @ team @ |
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3568 |
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Author |
Czerlinski, G.H.; Erickson, J.O.; Theorell, H. |
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Title |
Chemical relaxation studies on the horse liver alcohol dehydrogenase system |
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Journal Article |
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Year |
1979 |
Publication |
Physiological Chemistry and Physics |
Abbreviated Journal |
Physiol Chem Phys |
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11 |
Issue |
6 |
Pages |
537-569 |
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Alcohol Oxidoreductases/*metabolism; Animals; Buffers; Electron Transport; Ethanol/metabolism; Horses; Hydrogen-Ion Concentration; Liver/*enzymology; Mathematics; NAD/metabolism; Oscillometry; Osmolar Concentration; Temperature; Time Factors |
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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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0031-9325 |
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PMID:44918 |
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Equine Behaviour @ team @ |
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3813 |
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Author |
Graham, M.; Letz, R. |
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Title |
Within-species variation in the development of ultrasonic signaling of preweanling rats |
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Journal Article |
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Year |
1979 |
Publication |
Developmental Psychobiology |
Abbreviated Journal |
Dev Psychobiol |
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12 |
Issue |
2 |
Pages |
129-136 |
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Keywords |
Animals; *Animals, Newborn; Animals, Suckling; Body Weight; Cold/adverse effects; Environment; Genotype; Individuality; Object Attachment; Rats; Stress/*physiopathology; Ultrasonics; *Vocalization, Animal |
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The development of litter and individual differences in the rate of ultrasonic signaling of neonatal rats was studied. Systematic variations among litters and individuals emerged, without differential treatment. These differences were not correlated with variations in general development as indexed by body weight. Two experiments using a cross-fostering design showed that litter differences developed independently of variations in postnatal environment. These results indicate that the variations among litters in ultrasound rate have a prenatal, possibly genetic, etiology and may represent reliable indicants of response to environmental stress. |
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0012-1630 |
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PMID:456751 |
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Equine Behaviour @ team @ |
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4172 |
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