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Author Spengler M.I.; Rasia M. doi  openurl
  Title Influence of Plasma Proteins on Erythrocyte Aggregation in Three Mammalian Species Type Journal Article
  Year 2001 Publication (down) Veterinary Research Communications Abbreviated Journal Vet.Res.Comm  
  Volume 25 Issue 7 Pages 591-599  
  Keywords albumin – bovine – equine – erythrocyte aggregation – dextran – haemorheology – human – plasma protein – polyvinylpyrrolidone  
  Abstract The aggregation capacity of human erythrocytes lies between that of the non-aggregating bovine erythrocytes and the remarkably aggregating equine ones. As the ability to aggregate is attributed to cell factors and the composition of the plasma proteins, the role that plasma proteins play in the aggregation process in these three species was studied. Washed erythrocytes were suspended in phosphate-buffered saline (PBS; pH 7.4, 300 mOsm/L) plus polyvinylpyrrolidone (PVP) in a suitable concentration to obtain an average intensity of aggregation (control media). The superimposed effect of replacing 80% of the medium by either autologous plasma, serum or albumin solution was studied. The plasma proteins appeared to enhance aggregation by human and equine erythrocytes, but impaired this process in bovine erythrocytes. Some evidence was obtained supporting the existence of serum factors capable of reducing aggregation of erythrocytes in cattle and it was concluded that the non-aggregating behaviour of bovine erythrocytes may be due to the cells interacting particularly with the macromolecules in the serum.  
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  Notes Approved no  
  Call Number refbase @ user @ Serial 2013  
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Author Creel, S. url  doi
openurl 
  Title Social dominance and stress hormones Type Journal Article
  Year 2001 Publication (down) Trends in Ecology & Evolution Abbreviated Journal Trends. Ecol. Evol  
  Volume 16 Issue 9 Pages 491-497  
  Keywords Dominance; rank; stress; glucocorticoids; cooperative breeding; sociality; behavioural endocrinology; mammals  
  Abstract In most cooperatively breeding birds and mammals, reproductive rates are lower for social subordinates than for dominants, and it is common for reproduction in subordinates to be completely suppressed. Early research conducted in captivity showed that losing fights can increase glucocorticoid (GC) secretion, a general response to stress. Because GCs can suppress reproduction, it has been widely argued that chronic stress might underlie reproductive suppression of social subordinates in cooperative breeders. Contradicting this hypothesis, recent studies of cooperative breeders in the wild show that dominant individuals have elevated GCs more often than do subordinates. The findings that elevated GCs can be a consequence of subordination or a cost of dominance complicate the conventional view of social stress, with broad ramifications for the evolution of dominance and reproductive suppression.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 4072  
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Author Bolhuis, J.J.; Macphail, E.M. url  doi
openurl 
  Title A critique of the neuroecology of learning and memory Type Journal Article
  Year 2001 Publication (down) Trends in Cognitive Sciences Abbreviated Journal Trends. Cognit. Sci.  
  Volume 5 Issue 10 Pages 426-433  
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  Abstract Recent years have seen the emergence of neuroecology, the study of the neural mechanisms of behaviour guided by functional and evolutionary principles. This research has been of enormous value for our understanding of the evolution of brain- and species-specific behaviour. However, we question the validity of the neuroecological approach when applied to the analysis of learning and memory, given its arbitrary assumption that different [`]problems' engage different memory mechanisms. Differences in memory-based performance in [`]natural' tasks do not prove differences in memory capacity; similarly, differences in the use of memory in the natural environment do not provide a sound basis for expecting differences in anatomical structures that subserve learning and memory. This critique is illustrated with examples taken from the study of the neurobiology of food storing and song learning in birds.  
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  ISSN 1364-6613 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 4742  
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Author Giulotto, E. openurl 
  Title Will horse genetics create better champions? Type Journal Article
  Year 2001 Publication (down) Trends Genet. Abbreviated Journal  
  Volume 17 Issue Pages 166  
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  Notes Cited By (since 1996): 1; Export Date: 24 October 2008 Approved no  
  Call Number Admin @ knut @ Serial 4589  
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Author McGreevy, P.D.; Webster, A.J.; Nicol, C.J. openurl 
  Title Study of the behaviour, digestive efficiency and gut transit times of crib-biting horses Type Journal Article
  Year 2001 Publication (down) The Veterinary record Abbreviated Journal Vet. Rec.  
  Volume 148 Issue 19 Pages 592-596  
  Keywords Animals; Behavior, Animal/*physiology; Case-Control Studies; *Digestion; *Gastrointestinal Motility/drug effects; Horse Diseases/*physiopathology; Horses/*physiology/psychology; Male; Stereotyped Behavior/*physiology; Sulfapyridine/blood; Sulfasalazine/diagnostic use/pharmacology  
  Abstract The spontaneous behaviour and the apparent digestibility of dry matter and fibre and transit times of digesta were compared in four normal horses and four crib-biters. A technique was developed for measuring total gut transit times (TGTT) by using single-stool analysis of the passage of radio-opaque polyethylene markers. Longer TGTT were recorded in the crib-biters than in the normal horses but the orocaecal transit times did not differ. The crib-biters rested less than the normal horses.  
  Address Department of Clinical Veterinary Science, University of Bristol, Langford  
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  Language English Summary Language Original Title  
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  Series Volume Series Issue Edition  
  ISSN 0042-4900 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:11386445 Approved no  
  Call Number refbase @ user @ Serial 86  
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Author McBride, S.D.; Long, L. openurl 
  Title Management of horses showing stereotypic behaviour, owner perception and the implications for welfare Type Journal Article
  Year 2001 Publication (down) The Veterinary Record Abbreviated Journal Vet. Rec.  
  Volume 148 Issue 26 Pages 799-802  
  Keywords *Animal Husbandry/methods; *Animal Welfare; Animals; England/epidemiology; Horse Diseases/*epidemiology/*prevention & control/psychology; Horses; Humans; Interviews; *Perception; *Stereotyped Behavior  
  Abstract A telephone survey was conducted of 100 racing stables, 100 riding schools and 100 competition establishments (8,427 horses in total) to determine what management practices were being applied to horses showing stereotypic behaviour, and to determine the underlying reasons for them by assessing the perceptions and opinions of the people working with the horses. The results indicated that horse owners are concerned about stereotypic behaviour, first, because it reduces the performance of the animal (31, 30 and 27 per cent of the owners of racing stables, riding schools and competition establishments respectively), secondly, because it has adverse clinical effects on the horse (52, 55 and 56 per cent), and thirdly, because it reduces the monetary value of the animal (45, 59 and 31 per cent). The belief that these behaviours are learnt or copied also affects the management of affected horses: they are not allowed on to the premises by 4, 32 and 17 per cent of owners of racing stables, riding schools and competition establishments, respectively; attempts are made to remove the causal factors of the stereotypy by 35, 43 and 36 per cent; the behaviours are physically prevented by 77, 67 and 79 per cent, and the affected horses are kept separate from other horses by 39, 30 and 48 per cent.  
  Address Institute of Rural Studies, University of Wales, Aberystwyth  
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  Series Volume Series Issue Edition  
  ISSN 0042-4900 ISBN Medium  
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  Notes PMID:11467606 Approved no  
  Call Number refbase @ user @ Serial 1918  
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Author Jansen, W.L.; van Alphen, M.; Berghout, M.; Everts, H.; Beynen, A.C. url  doi
openurl 
  Title An approach to assessment of the efficiency of dietary energy utilization by horses and ponies kept at riding schools Type Journal Article
  Year 2001 Publication (down) The Veterinary quarterly Abbreviated Journal Vet Q  
  Volume 23 Issue 4 Pages 195-198  
  Keywords *Animal Feed; Animal Husbandry; Animals; Body Weight; Dietary Fats; Dietary Fiber; *Energy Intake; *Energy Metabolism; Female; Horses/*physiology; Male  
  Abstract The ratio of calculated net energy intake (NEi) to calculate net energy requirement (NEr) might serve as an indicator of the efficiency of dietary energy utilization. The ratio was determined for 93 horses and ponies from 10 riding schools. For each animal with an assumed constant body weight, energy intake and energy requirements were assessed. On average, the estimated NEi was 14% greater than NEr. There was a significant, negative association between crude fibre intake and the NEi: NEr ratio. Earlier work indicated that extra fat intake may lead to over estimation of the calculated energy value of the ration due to changes in macronutrient digestibility. Dietary fat concentration was found to range from 32 to 52 g/kg dry matter (5 to 6 g/MJ net energy), but on the basis of digestibility trials this range in fat concentration is too small to significantly influence the NEi: NEr ratio. This study shows that assessment of the efficiency of dietary energy utilization under normal conditions, on the basis of the NEi: NEr ratio is fraught with uncertainty.  
  Address Department of Nutrition, Faculty of Veterinary, Medicine, Utrecht University, The Netherlands  
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  Series Volume Series Issue Edition  
  ISSN 0165-2176 ISBN Medium  
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  Notes PMID:11765239 Approved no  
  Call Number Serial 1807  
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Author Miller, R.M. openurl 
  Title Behavior and misbehavior of the horse Type Journal Article
  Year 2001 Publication (down) The Veterinary Clinics of North America. Equine Practice Abbreviated Journal Vet Clin North Am Equine Pract  
  Volume 17 Issue 2 Pages 379-87, ix  
  Keywords Animals; Behavior, Animal/*physiology; Curriculum; Education, Veterinary; Horses/*physiology/*psychology; United States  
  Abstract For decades after the discipline of psychiatry had been established as an accepted specialty, many medical schools continued to fail to train their students in the fundamentals of this discipline. Medical students all have at least cursory exposure to psychiatric principles and basic psychology. Unfortunately, the veterinary profession has lagged behind human medicine in this regard. Until recently, veterinary students received no training in animal behavior, and there were no available residencies within our schools for developing board-certified behavioral specialists.  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0749-0739 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:15658182 Approved no  
  Call Number Serial 1894  
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Author Gröschl, M.; Wagner, R.; Rauh, M.; Dörr, H.G. url  doi
openurl 
  Title Stability of salivary steroids: the influences of storage, food and dental care Type Journal Article
  Year 2001 Publication (down) Steroids Abbreviated Journal  
  Volume 66 Issue 10 Pages 737-741  
  Keywords Cortisol; 17OH-Progesterone; Progesterone; Saliva; Stability  
  Abstract We studied influences of dental care, food and storage on the reproducibility of salivary steroid levels. Cortisol (F), 17OH-progesterone (17OHP) and Progesterone (P) were measured using adapted commercial radioimmunoassays. Saliva samples of healthy adults (n = 15; m:8; f:7) were collected directly before and after dental care, and directly before and after breakfast with various foodstuffs. A second experiment investigated stability of steroids under different storage conditions. Four series of identical saliva portions (I: Native saliva; II: Centrifuged saliva; III: Saliva with trifluor acetate (TFA); IV: Saliva with 0.5% NaN3) were stored at room temperature and at 4°C for up to three weeks. To demonstrate influences of repeated thawing and re-freezing of saliva on steroid values, saliva samples (n = 15) were divided into identical portions. These portions were frozen and re-thawed up to 5 times before measurement. Neither dental care nor intake of bread or milk effected the reproducibility of F, 170HP, and P. Steroid levels decreased significantly in the course of three weeks under different storage conditions (P < 0.001). This decrease was clinically relevant from the second week onward, with exception of NaN3 treated samples. After repeated freezing and re-thawing 17OHP and P decreased slightly (about 5%). Only F decreased significantly after the third thawing (P < 0.001). The results show the usefulness of standardized handling of saliva samples for improving reproducibility and reliability of salivary steroid measurements.  
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  ISSN 0039-128x ISBN Medium  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5561  
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Author Billat, L.V. url  openurl
  Title Interval Training for Performance: A Scientific and Empirical Practice: Special Recommendations for Middle- and Long-Distance Running. Part I: Aerobic Interval Training Type Journal Article
  Year 2001 Publication (down) Sports Medicine Abbreviated Journal Sports Med  
  Volume 31 Issue 1 Pages 13-31  
  Keywords Aerobic exercise; Exercise performance; Training  
  Abstract This article traces the history of scientific and empirical interval training. Scientific research has shed some light on the choice of intensity, work duration and rest periods in so-called 'interval training'. Interval training involves repeated short to long bouts of rather high intensity exercise (equal or superior to maximal lactate steady-state velocity) interspersed with recovery periods (light exercise or rest). Interval training was first described by Reindell and Roskamm and was popularised in the 1950s by the Olympic champion, Emil Zatopek. Since then middle- and long- distance runners have used this technique to train at velocities close to their own specific competition velocity. In fact, trainers have used specific velocities from 800 to 5000m to calibrate interval training without taking into account physiological markers. However, outside of the competition season it seems better to refer to the velocities associated with particular physiological responses in the range from maximal lactate steady state to the absolute maximal velocity. The range of velocities used in a race must be taken into consideration, since even world records are not run at a constant pace. Copyright 2001 Adis International  
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  ISSN 0112-1642 ISBN Medium  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ 00007256-200131010-00002 Serial 5002  
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