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Author |
Fazio, E.; Medica, P.; Cravana, C.; Giacoppo, E.; Ferlazzo, A. |
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Title |
Effect of Short-Distance Road Transport on Thyroid Function, Rectal Temperature, Body Weight and Heart Rate of Stallions |
Type |
Conference Article |
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Year |
2008 |
Publication |
IESM 2008 |
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Keywords |
horses, iodothyronines, rectal temperature, body weight, heart rate, transport |
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Abstract |
Aim of study was to investigate the effects of transport stress on thyroid response, body weight, rectal temperature and heart rate changes in one hundred twenty-six healthy stallions in basal conditions, before and after short road transport. One hundred twenty-six Thoroughbreds and crossbreds stallions with previous travelling experience, aged 4 to 15 yr, were transported by road in a commercial trailer for a period of 3 h (distance <300 km). Blood samples and physiological parameters were collected at 0800 (basal I) and at 1100 (basal II), in each horse“s box, one week before the loading and transport in basal conditions, and one week later, at 0800 immediately before loading (pre-transport), and after 3 h period of transport and unloading, on their arrival at the breeding stations (post-transport), in each new horse”s box, within 30 min. Increases in circulating T3, T4 and fT4 levels (P < 0.01), but not for fT3 levels, were observed after transport, as compared to before loading values, irrespective of different breed. Lower T4 and fT4 levels were observed in basal II (P < 0.01) than basal I and before loading values (pre-transport). After transport Thoroughbreds showed higher fT3 (P < 0.05) and fT4 (P < 0.01) levels than crossbred stallions. No significant differences for T3 and T4 changes were observed. A significant increase in rectal temperature (P < 0.01) and heart rate (P < 0.05) was observed after transport, as compared to before loading values (pre-transport). No differences between basal I, basal II and before loading values (pre-transport) for physiological parameters were observed.
The highest T3, T4 and fT4 levels recorded after short transport seem to suggest a preferential release from the thyroid gland. The results indicate that short road transport stress contributes significantly to thyroid hormone changes, according to different breed, and to the increase in rectal temperature and heart rate. No differences related to different age were observed. |
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Department of Morphology, Biochemistry, Physiology and Animal Production – Unit of Veterinary Physiology, Faculty of Veterinary Medicine, University of Messina, Polo Universitario Annunziata, 98168 Messina, Italy |
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Corporate Author |
Cravana, C. |
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IESM 2008 |
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Poster IESM 2008 |
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yes |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4494 |
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Author |
Laut, J.E.; Houpt, K.A.; Hintz, H.F.; Houpt, T.R. |
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Title |
The effects of caloric dilution on meal patterns and food intake of ponies |
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Journal Article |
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Year |
1985 |
Publication |
Physiology & behavior |
Abbreviated Journal |
Physiol. Behav. |
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Volume |
35 |
Issue |
4 |
Pages |
549-554 |
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Keywords |
Animals; Body Weight; *Diet; Energy Intake; *Feeding Behavior; Homeostasis; Horses/*physiology; Male |
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Abstract |
In order to determine if horses will increase their intake in response to caloric dilution, four pony geldings were fed ad lib a mixed grain diet either undiluted (3.4 Mcal/kg of digestible energy) or diluted (wt/wt) with 25% sawdust (2.6 Mcal/kg) or with 50% sawdust (1.7 Mcal/kg). The mean daily caloric intake was 17,457 kcal (3.4 Mcal diet), 17,546 kcal (2.6 Mcal diet) and 12,844 kcal (1.7 Mcal). The mean time spent eating was 246 (3.4 Mcal), 351 (2.6 Mcal), and 408 (1.7 Mcal) minutes/day. Meal size increased and meal frequency decreased with increasing dilution. The median long survivorships of intermeal intervals were 6.4 min (3.4 Mcal), 3.95 min (2.6 Mcal) and 4.91 min (1.7 Mcal). Ponies responded to caloric dilution by increasing the volume of intake to maintain caloric intake when the diet had 25% diluent. When the diet was diluted by 50%, intake was increased, but not at a rate adequate to maintain caloric intake. However, the ponies were able to maintain body weight. |
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0031-9384 |
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PMID:4070429 |
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refbase @ user @ |
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52 |
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Hodgson, D.; Howe, S.; Jeffcott, L.; Reid, S.; Mellor, D.; Higgins, A. |
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Title |
Effect of prolonged use of altrenogest on behaviour in mares |
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Year |
2005 |
Publication |
Veterinary journal (London, England : 1997) |
Abbreviated Journal |
Vet J |
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169 |
Issue |
1 |
Pages |
113-115 |
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Keywords |
Administration, Oral; Anabolic Agents/adverse effects/*pharmacology; Animals; Behavior, Animal/*drug effects; Body Constitution/drug effects; Body Weight/drug effects; *Doping in Sports; Female; Horses/*physiology; Social Behavior; Social Dominance; Time Factors; Trenbolone/adverse effects/*analogs & derivatives/*pharmacology |
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Erratum in:
Vet J. 2005 May;169(3):321.
Corrected and republished in:
Vet J. 2005 May;169(3):322-5.
Oral administration of altrenogest for oestrus suppression in competition horses is believed to be widespread in some equestrian disciplines, and can be administered continuously for several months during a competition season. To examine whether altrenogest has any anabolic or other potential performance enhancing properties that may give a horse an unfair advantage, we examined the effect of oral altrenogest (0.044 mg/kg), given daily for a period of eight weeks, on social hierarchy, activity budget, body-mass and body condition score of 12 sedentary mares. We concluded that prolonged oral administration of altrenogest at recommended dose rates to sedentary mares resulted in no effect on dominance hierarchies, body mass or condition score. |
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Faculty of Veterinary Science, University of Sydney, Private Mailbag 4, Narellan Delivery Centre, Narellan, NSW 2567, Australia. davidh@camden.usyd.edu.au |
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ISSN |
1090-0233 |
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PMID:15683772 |
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no |
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Call Number |
refbase @ user @ |
Serial |
671 |
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Author |
Houpt, K.A.; Parsons, M.S.; Hintz, H.F. |
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Title |
Learning ability of orphan foals, of normal foals and of their mothers |
Type |
Journal Article |
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Year |
1982 |
Publication |
Journal of animal science |
Abbreviated Journal |
J. Anim Sci. |
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55 |
Issue |
5 |
Pages |
1027-1032 |
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Keywords |
Age Factors; Animals; Body Weight; Dominance-Subordination; Female; Horses/*physiology; *Learning; *Maternal Deprivation; Mothers/*psychology |
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Abstract |
The maze learning ability of six pony foals that had been weaned at birth was compared to that of six foals reared normally. The foals' learning ability was also compared to their mothers' learning ability at the same task; the correct turn in a single choice point maze. The maze learning test was conducted when the foals were 6 to 8 mo old and after the mothered foals had been weaned. There was no significant difference between the ability of orphaned (weaned at birth) and mothered foals in their ability to learn to turn left (6 +/- .7 and 5.1 +/- .1 trials, respectively) or to learn the reversal, to turn right (6.7 +/- .6 and 6.2 +/- .6 trials, respectively). The orphan foals spent significantly more time in the maze in their first exposure to it than the mothered foals (184 +/- 42 vs 55 +/- 15 s. Mann Whitney U = 7, P less than .05). The mothers of the foals (n = 11) learned to turn left as rapidly as the foals (5.9 +/- .7 trials), but they were slower to learn to turn right (9.8 +/- 1.4 vs 6.4 +/- .4 trials, Mann Whitney U = 33, P less than .05), indicating that the younger horses learned more rapidly. There was no correlation between the trials to criteria of the mare and those of her foal, but there was a significant negative correlation between rank in trials to criteria and age (r = -65, P less than .05) when data from the mare and foal trials were combined. The dominance hierarchy of the mares was determined using a paired feeding test in which two horses competed for one bucket of feed. Although there was no correlation between rank in the hierarchy and maze learning ability, there was a correlation between body weight and rank in the hierarchy (r = .7, P less than .05). This may indicate either that heavier horses are likely to be dominant or that horses high in dominance gain more weight. Maternal deprivation did not appear to seriously retard learning of a simple maze by foals, although the orphans moved more slowly initially. The lack of maternal influence on learning is also reflected in the lack of correlation between the mare's learning ability and that of her foal. Young horses appear to learn more rapidly than older horses. |
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0021-8812 |
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PMID:7174546 |
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refbase @ user @ |
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58 |
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Author |
Houpt, T.R.; Houpt, K.A. |
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Title |
Nitrogen conservation by ponies fed a low -protein ration |
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Journal Article |
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Year |
1971 |
Publication |
American journal of veterinary research |
Abbreviated Journal |
Am J Vet Res |
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Volume |
32 |
Issue |
4 |
Pages |
579-588 |
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Keywords |
Administration, Oral; Amino Acids/biosynthesis; Animals; Anti-Infective Agents/pharmacology; Body Weight/drug effects; Dietary Proteins/*pharmacology; Horses/*metabolism; Nitrogen/*metabolism; Urea/administration & dosage/antagonists & inhibitors/metabolism; Water/metabolism |
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0002-9645 |
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PMID:5110116 |
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refbase @ user @ |
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62 |
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Author |
Jeong, S.; Han, M.; Lee, H.; Kim, M.; Kim, J.; Nicol, C.J.; Kim, B.H.; Choi, J.H.; Nam, K.-H.; Oh, G.T.; Yoon, M. |
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Title |
Effects of fenofibrate on high-fat diet-induced body weight gain and adiposity in female C57BL/6J mice |
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Journal Article |
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Year |
2004 |
Publication |
Metabolism: clinical and experimental |
Abbreviated Journal |
Metabolism |
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Volume |
53 |
Issue |
10 |
Pages |
1284-1289 |
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Keywords |
Adipose Tissue/*anatomy & histology/drug effects; Animals; Antilipemic Agents/*pharmacology; Body Composition/*drug effects; Body Weight/drug effects; Dietary Fats/*pharmacology; Eating/drug effects; Fatty Acids/metabolism; Female; Gene Expression Regulation/drug effects; Leptin/metabolism; Liver/metabolism; Mice; Mice, Inbred C57BL; Ovariectomy; Procetofen/*pharmacology; RNA, Messenger/biosynthesis/genetics; Receptors, Cytoplasmic and Nuclear/biosynthesis/genetics/metabolism; Transcription Factors/biosynthesis/genetics/metabolism; Weight Gain/*drug effects |
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Our previous study suggested that fenofibrate affects obesity and lipid metabolism in a sexually dimorphic manner in part through the differential activation of hepatic peroxisome proliferator-activated receptor alpha (PPARalpha) in male and female C57BL/6J mice. To determine whether fenofibrate reduces body weight gain and adiposity in female sham-operated (Sham) and ovariectomized (OVX) C57BL/6J mice, the effects of fenofibrate on not only body weight, white adipose tissue (WAT) mass, and food intake, but also the expression of both leptin and PPARalpha target genes were measured. Compared to their respective low-fat diet-fed controls, both Sham and OVX mice exhibited increases in body weight and WAT mass when fed a high-fat diet. Fenofibrate treatment decreased body weight gain and WAT mass in OVX, but not in Sham mice. Furthermore, fenofibrate increased the mRNA levels of PPARalpha target genes encoding peroxisomal enzymes involved in fatty acid beta-oxidation, and reduced apolipoprotein C-III (apo C-III) mRNA, all of which were expressed at higher levels in OVX compared to Sham mice. However, leptin mRNA levels were found to positively correlate with WAT mass, and food intake was not changed in either OVX or Sham mice following fenofibrate treatment. These results suggest that fenofibrate differentially regulates body weight and adiposity due in part to differences in PPARalpha activation, but not to differences in leptin production, between female OVX and Sham mice. |
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Department of Life Sciences, Mokwon University, Taejon, Korea |
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0026-0495 |
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PMID:15375783 |
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no |
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Call Number |
refbase @ user @ |
Serial |
72 |
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Author |
Pritchard, J.C.; Barr, A.R.S.; Whay, H.R. |
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Title |
Validity of a behavioural measure of heat stress and a skin tent test for dehydration in working horses and donkeys |
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Year |
2006 |
Publication |
Equine veterinary journal |
Abbreviated Journal |
Equine Vet J |
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Volume |
38 |
Issue |
5 |
Pages |
433-438 |
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Keywords |
Age Factors; Animal Welfare; Animals; Behavior, Animal/physiology; Body Temperature/*physiology; Body Weight/physiology; Case-Control Studies; Dehydration/diagnosis/pathology/*veterinary; Drinking; *Equidae; Female; Heat Stress Disorders/diagnosis/physiopathology/*veterinary; Horse Diseases/*diagnosis/pathology; Horses; Hypovolemia/diagnosis/physiopathology/veterinary; Male; Osmolar Concentration; Pakistan; Respiration; Skin/*pathology; Species Specificity; Work |
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Abstract |
REASONS FOR PERFORMING STUDY: Dehydration and heat stress are serious welfare issues for equids working in developing countries. There is a lack of any standardised method or validated interpretation of the skin tent test in horses and donkeys. Owners of dehydrated and heat-stressed animals often depend on veterinary examination for identification of these conditions, leading to delays in treatment and unnecessary reliance on external sources to effect welfare improvement. OBJECTIVES: To validate a standardised skin tent test for dehydration and a behavioural measure of heat stress in working equids; and to examine the effect of heat stress and dehydration on tripping and staggering behaviour. METHODS: The study was carried out on 130 working horses and donkeys in Pakistan. Associations between skin tent and blood parameters (packed cell volume [PCV], serum total protein [TP], serum osmolality), clinical parameters, resting and drinking behaviour were examined. Heat stress behaviour (increased respiratory rate and depth, head nodding, flared nostrils, apathy) was observed in conjunction with rectal temperature. Tripping and staggering were assessed using a simple obstacle course. RESULTS: In both species, heat stress behaviour was significantly associated with increased rectal temperature (P<0.001). A positive skin tent test was not significantly associated with PCV or TP, although in donkeys it was significantly associated with lower serum osmolality (P<0.001). More animals age >15 years had a positive skin tent than those in younger age groups (P = 0.037). Very thin horses were more likely to have a positive skin tent than those in thin or moderate condition (P = 0.028). There was no significant correlation between skin tent and tripping or staggering in either species. CONCLUSIONS AND POTENTIAL RELEVANCE: Heat stress behaviour is related to increased body temperature in working horses and donkeys. Owners may use this to make judgements regarding rest and cooling, precluding the need to seek veterinary attention. The skin tent test for dehydration used in this study did not show a significant relationship with PCV or TP. However, the use of blood parameters to validate the skin tent test may be confounded by anaemia, hypoproteinaemia or electrolyte depletion. Alternative methods are needed to confirm or refute the validity of the skin tent test in working equids. |
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Department of Clinical Veterinary Science, University of Bristol, Langford, UK |
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0425-1644 |
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PMID:16986604 |
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Call Number |
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Serial |
1784 |
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Author |
Staniar, W.B.; Kronfeld, D.S.; Hoffman, R.M.; Wilson, J.A.; Harris, P.A. |
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Title |
Weight prediction from linear measures of growing Thoroughbreds |
Type |
Journal Article |
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Year |
2004 |
Publication |
Equine veterinary journal |
Abbreviated Journal |
Equine Vet J |
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Volume |
36 |
Issue |
2 |
Pages |
149-154 |
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Keywords |
Animal Nutrition Physiology; Animals; Biometry; Body Weight/*physiology; Female; Horses/*anatomy & histology/*growth & development; Male; Mathematics; Predictive Value of Tests; Reproducibility of Results; Sensitivity and Specificity |
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Abstract |
REASON FOR PERFORMING STUDY: Monitoring weight of foals is a useful management practice to aid in maximising athletic potential while minimising risks associated with deviations from normal growth. OBJECTIVE: To develop predictive equations for weight, based on linear measurements of growing Thoroughbreds (TBs). METHODS: Morphometric equations predicting weight from measurements of the trunk and legs were developed from data of 153 foals. The accuracy, precision and bias of the best fitting equation were compared to published equations using a naive data set of 22 foals. RESULTS: Accuracy and precision were maximised with a broken line relating calculated volumes (V(t + l)) to measured weights. Use of the broken line is a 2 step process. V(t + l) is calculated from linear measures (m) of girth (G), carpus circumference (C), and length of body (B) and left forelimb (F). V(t + I) = ([G2 x B] + 4[C2 x F]) 4pi. If V(t + l) < 0.27 m3, weight is estimated: Weight (kg) = V(t + l) x 1093. If V(t + l) > or = 0.27 m3: Weight (kg) = V(t + l) x 984 + 24. The broken line was more accurate and precise than 3 published equations predicting the weight of young TBs. CONCLUSIONS: Estimation of weight using morphometric equations requires attention to temporal changes in body shape and density; hence, a broken line is needed. Including calculated leg volume in the broken line model is another contributing factor to improvement in predictive capability. POTENTIAL RELEVANCE: The broken line maximises its value to equine professionals through its accuracy, precision and convenience. |
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Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061-0306, USA |
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0425-1644 |
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PMID:15038438 |
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Call Number |
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Serial |
1806 |
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Author |
Jansen, W.L.; van Alphen, M.; Berghout, M.; Everts, H.; Beynen, A.C. |
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Title |
An approach to assessment of the efficiency of dietary energy utilization by horses and ponies kept at riding schools |
Type |
Journal Article |
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Year |
2001 |
Publication |
The Veterinary quarterly |
Abbreviated Journal |
Vet Q |
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Volume |
23 |
Issue |
4 |
Pages |
195-198 |
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Keywords |
*Animal Feed; Animal Husbandry; Animals; Body Weight; Dietary Fats; Dietary Fiber; *Energy Intake; *Energy Metabolism; Female; Horses/*physiology; Male |
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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. |
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Address |
Department of Nutrition, Faculty of Veterinary, Medicine, Utrecht University, The Netherlands |
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English |
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ISSN |
0165-2176 |
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PMID:11765239 |
Approved |
no |
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Call Number |
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Serial |
1807 |
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Author |
Carroll, C.L.; Huntington, P.J. |
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Title |
Body condition scoring and weight estimation of horses |
Type |
Journal Article |
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Year |
1988 |
Publication |
Equine veterinary journal |
Abbreviated Journal |
Equine Vet J |
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Volume |
20 |
Issue |
1 |
Pages |
41-45 |
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Keywords |
Animals; Biometry; *Body Weight; Female; Horses/*anatomy & histology; Male; Physical Examination/*veterinary |
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Abstract |
Three hundred and seventy two horses of varying breeds, height and fatness were weighed and measured for height at the withers. They were assessed for condition score by adaptation of a previously published method. The heart girth and length of 281 of the horses were also measured. Weight of horses was highly correlated (P less than 0.001) with height (r2 = 0.62), condition score (r2 = 0.22) and girth2 x length (r2 = 0.90). Nomograms were constructed to predict weight from height and condition score, and girth and length measurements. Weight can also be accurately estimated from the formula: (formula, see text) The average value of 'Y' in this experiment was 11900 and this estimated weight with more accuracy than some previously published values of 'Y'. Racing Thoroughbred horses were found to be significantly lighter than non-racing Thoroughbreds of the same height and condition score. The method of assessment of condition score was shown to be repeatable between different operators with varying degrees of experience. |
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Address |
Department of Agriculture and Rural Affairs, Attwood Veterinary Research Laboratory, Westmeadows, Victoria, Australia |
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English |
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0425-1644 |
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Notes |
PMID:3366105 |
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1808 |
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