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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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Department of Nutrition, Faculty of Veterinary, Medicine, Utrecht University, The Netherlands |
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ISSN |
0165-2176 |
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Notes |
PMID:11765239 |
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no |
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Call Number |
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Serial |
1807 |
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Author |
Turner, K.K.; Nielsen, B.D.; O'Connor, C.I.; Burton, J.L. |
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Title |
Bee pollen product supplementation to horses in training seems to improve feed intake: A pilot study |
Type |
Journal Article |
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Year |
2006 |
Publication |
Journal of Animal Physiology and Animal Nutrition |
Abbreviated Journal |
J Anim Physiol Anim Nutr (Berl) |
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Volume |
90 |
Issue |
9-10 |
Pages |
414-420 |
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Keywords |
*Animal Nutrition Physiology; Animals; Antibody Formation; Bees; Detergents; Dietary Fiber/metabolism; Dietary Supplements; *Digestion; Eating/*drug effects; Exercise Test/veterinary; Female; Heart Rate/drug effects/physiology; Horses/blood/immunology/*physiology; Leukocyte Count/*veterinary; Male; Oxygen Consumption/drug effects/physiology; Physical Conditioning, Animal/*physiology; Pilot Projects; *Pollen; Random Allocation |
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Abstract |
The objective of this study was to determine the efficacy of supplementation of Dynamic Trio 50/50, a bee pollen-based product, to improve physical fitness, blood leukocyte profiles, and nutritional variables in exercised horses. Ten Arabian horses underwent a standardised exercise test (SET), then were pair-matched by sex and fitness and randomly assigned to BP (receiving 118 g of Dynamic Trio 50/50 daily) or CO (receiving 73 g of a placebo) for a period of 42 days. A total collection was conducted from days 18 to 21 on six geldings to determine nutrient retention and neutral detergent fibre (NDF) and acid detergent fibre (ADF) digestibility. Horses were exercise conditioned and completed another SET on day 42. V160 and V200 were calculated from SET heart rates (HR). Lactate, glucose, haematocrit (HT) and haemoglobin (HB) concentrations were determined from SET blood samples. Total leukocyte count, and circulating numbers of various leukocytes and IgG, IgM and IgA concentrations were determined in rest and recovery blood samples from both SETs. Geldings on BP (n = 3) ate more feed than CO. BP had less phosphorus excretion, and tended to retain more nitrogen. BP tended to digest more NDF and ADF while having lower NDF digestibility and tending to have lower ADF digestibility. No treatment differences existed for V160 and V200, HR, lactate, HT and HB. There was a trend for lymphocyte counts to be lower in BP than CO on day 42. Dynamic Trio 50/50 supplementation may have a positive effect on performance by helping horses in training meet their potentially increased nutrient demands by increasing feed intake and thus nutrient retention. |
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Address |
Department of Animal Science, Michigan State University, East Lansing, MI 48824, USA. kturner@uga.edu |
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ISSN |
0931-2439 |
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Notes |
PMID:16958799 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4237 |
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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 |
Type |
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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Abstract |
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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ISSN |
0026-0495 |
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Notes |
PMID:15375783 |
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no |
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Call Number |
refbase @ user @ |
Serial |
72 |
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Permanent link to this record |
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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 |
Type |
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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English |
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ISSN |
0002-9645 |
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Notes |
PMID:5110116 |
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no |
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Call Number |
refbase @ user @ |
Serial |
62 |
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Permanent link to this record |
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Author |
Nicol, C.J.; Adachi, M.; Akiyama, T.E.; Gonzalez, F.J. |
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Title |
PPARgamma in endothelial cells influences high fat diet-induced hypertension |
Type |
Journal Article |
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Year |
2005 |
Publication |
American journal of hypertension : journal of the American Society of Hypertension |
Abbreviated Journal |
Am J Hypertens |
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Volume |
18 |
Issue |
4 Pt 1 |
Pages |
549-556 |
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Keywords |
Administration, Oral; Animals; Antihypertensive Agents/pharmacology; Blood Pressure/drug effects; Diabetes Mellitus, Type 2/physiopathology; Dietary Fats/*administration & dosage/pharmacology; Dose-Response Relationship, Drug; Endothelial Cells/*metabolism; Female; Heart Rate/drug effects; Hypertension/*etiology; Ligands; Male; Mice; Mice, Knockout; PPAR gamma/*metabolism; Sodium Chloride/administration & dosage/pharmacology; Thiazolidinediones/pharmacology |
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Abstract |
BACKGROUND: Peroxisome proliferator-activated receptor gamma (PPARgamma) ligands improve human hypertension. However, the mechanism and site of this effect remains unknown, confounded by PPARgamma expression in many cell types, including endothelial cells (ECs). METHODS: To evaluate the vascular role of PPARgamma we used a conditional null mouse model. Specific disruption of PPARgamma in ECs was created by crossing Tie2-Cre+ transgenic (T2T+) and PPARgamma-floxed (fl/fl) mice to generate PPARgamma (fl/fl)T2T+ (PPARgamma E-null) mice. Conscious 8- to 12-week-old congenic PPARgamma (fl/fl)Cre- (wild type) and PPARgamma E-null mice were examined for changes in systolic blood pressure (BP) and heart rate (HR), untreated, after 2 months of salt-loading (drinking water), and after treatment for 3 months with high fat (HF) diet alone or supplemented during the last 2 weeks with rosiglitazone (3 mg/kg/d). RESULTS: Untreated PPARgamma E-nulls were phenotypically indistinguishable from wild-type littermates. However, compared to similarly treated wild types, HF-treated PPARgamma E-nulls had significantly elevated systolic BP not seen after normal diet or salt-loading. Despite sex-dependent baseline differences, salt-loaded and HF-treated PPARgamma E-nulls of either sex had significantly elevated HR versus wild types. Interestingly, rosiglitazone improved serum insulin levels, but not HF diet-induced hypertension, in PPARgamma E-null mice. CONCLUSIONS: These results suggest that PPARgamma in ECs not only is an important regulator of hypertension and HR under stressed conditions mimicking those arising in type 2 diabetics, but also mediates the antihypertensive effects of rosiglitazone. These data add evidence supporting a beneficial role for PPARgamma-specific ligands in the treatment of hypertension, and suggest therapeutic strategies targeting ECs may prove useful. |
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Address |
Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA |
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ISSN |
0895-7061 |
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Notes |
PMID:15831367 |
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no |
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Call Number |
refbase @ user @ |
Serial |
69 |
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Permanent link to this record |
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Author |
Nelson, G.S. |
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Title |
Onchocerciasis |
Type |
Journal Article |
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Year |
1970 |
Publication |
Advances in Parasitology |
Abbreviated Journal |
Adv Parasitol |
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Volume |
8 |
Issue |
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Pages |
173-224 |
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Keywords |
Africa; Animals; Anthelmintics/therapeutic use; Artiodactyla; Blindness/etiology; Cattle; Circadian Rhythm; Ddt; Diethylcarbamazine/therapeutic use; Diptera/anatomy & histology/growth & development; Dwarfism/etiology; Ecology; Eye/pathology; Feeding Behavior; Female; Geography; Haplorhini; Hernia, Femoral/etiology; Horses; Humans; Insect Vectors/growth & development; Larva/growth & development; Male; Onchocerca/classification/growth & development; *Onchocerciasis/diagnosis/drug therapy/epidemiology/immunology/pathology/prevention & control/veterinary; Primates; Serologic Tests; Skin/pathology; Skin Tests; Suramin/therapeutic use |
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ISSN |
0065-308X |
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Notes |
PMID:4997515 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2738 |
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Permanent link to this record |
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Author |
Milgram, N.W.; Head, E.; Muggenburg, B.; Holowachuk, D.; Murphey, H.; Estrada, J.; Ikeda-Douglas, C.J.; Zicker, S.C.; Cotman, C.W. |
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Title |
Landmark discrimination learning in the dog: effects of age, an antioxidant fortified food, and cognitive strategy |
Type |
Journal Article |
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Year |
2002 |
Publication |
Neuroscience and Biobehavioral Reviews |
Abbreviated Journal |
Neurosci Biobehav Rev |
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Volume |
26 |
Issue |
6 |
Pages |
679-695 |
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Keywords |
Age Factors; Aging/*physiology; Analysis of Variance; Animals; Antioxidants/*pharmacology; Blood Chemical Analysis/methods; Cognition/*physiology; *Diet; Discrimination Learning/*drug effects/*physiology; Distance Perception/drug effects/physiology; Dogs/physiology; Female; Male; Psychomotor Performance/physiology; Retention (Psychology)/drug effects/physiology; Spatial Behavior/*drug effects/*physiology; Task Performance and Analysis; Time Factors; Vitamin E/blood |
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Abstract |
The landmark discrimination learning test can be used to assess the ability to utilize allocentric spatial information to locate targets. The present experiments examined the role of various factors on performance of a landmark discrimination learning task in beagle dogs. Experiments 1 and 2 looked at the effects of age and food composition. Experiments 3 and 4 were aimed at characterizing the cognitive strategies used in performance on this task and in long-term retention. Cognitively equivalent groups of old and young dogs were placed into either a test group maintained on food enriched with a broad-spectrum of antioxidants and mitochondrial cofactors, or a control group maintained on a complete and balanced food formulated for adult dogs. Following a wash-in period, the dogs were tested on a series of problems, in which reward was obtained when the animal responded selectively to the object closest to a thin wooden block, which served as a landmark. In Experiment 1, dogs were first trained to respond to a landmark placed directly on top of coaster, landmark 0 (L0). In the next phase of testing, the landmark was moved at successively greater distances (1, 4 or 10 cm) away from the reward object. Learning varied as a function of age group, food group, and task. The young dogs learned all of the tasks more quickly than the old dogs. The aged dogs on the enriched food learned L0 significantly more rapidly than aged dogs on control food. A higher proportion of dogs on the enriched food learned the task, when the distance was increased to 1cm. Experiment 2 showed that accuracy decreased with increased distance between the reward object and landmark, and this effect was greater in old animals. Experiment 3 showed stability of performance, despite using a novel landmark, and new locations, indicating that dogs learned the landmark concept. Experiment 4 found age impaired long-term retention of the landmark task. These results indicate that allocentric spatial learning is impaired in an age-dependent manner in dogs, and that age also affects performance when the distance between the landmark and target is increased. In addition, these results both support a role of oxidative damage in the development of age-associated cognitive dysfunction and indicate that short-term administration of a food enriched with supplemental antioxidants and mitochondrial cofactors can partially reverse the deleterious effects of aging on cognition. |
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Address |
Life Science Division, University of Toronto at Scarborough, 1265 Military Trail, Scarborough, Ont., Canada M1C 1A4. milgram@psych.utoronto.ca |
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ISSN |
0149-7634 |
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Notes |
PMID:12479842 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2806 |
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Permanent link to this record |
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Author |
Brown, R.F.; Houpt, K.A.; Schryver, H.F. |
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Title |
Stimulation of food intake in horses by diazepam and promazine |
Type |
Journal Article |
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Year |
1976 |
Publication |
Pharmacology, biochemistry, and behavior |
Abbreviated Journal |
Pharmacol Biochem Behav |
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Volume |
5 |
Issue |
4 |
Pages |
495-497 |
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Keywords |
Age Factors; Animals; Diazepam/*pharmacology; Diet; Feeding Behavior/*drug effects; Female; Horses/*physiology; Male; Promazine/*pharmacology; Stimulation, Chemical |
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Abstract |
In two adult horses doses of 0.02-0.03 mg/kg diazepam, intravenously, increased 1 hr intake 54-75% above control levels. Intake was stimulated when the diet was a high grain, calorically dense one and also when the diet was a high fiber, calorically dilute one. Two young rapidly growing weanling horses showed an even more pronounced stimulation of intake. Following diazepam 1 hr intake was increased 105-240% above control lelvels. Promazine at a dose of 0.5 mg/kg also stimulated intake in adult horses, but not as markedly as did diazepam. A transquilizer and a neuroleptic appear to have a stimulatory eff upon short-term intake in horses. |
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ISSN |
0091-3057 |
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Notes |
PMID:1005496 |
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no |
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Call Number |
refbase @ user @ |
Serial |
60 |
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Permanent link to this record |
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Author |
Ordakowski-Burk, A.L.; Quinn, R.W.; Shellem, T.A.; Vough, L.R. |
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Title |
Voluntary intake and digestibility of reed canarygrass and timothy hay fed to horses |
Type |
Journal Article |
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Year |
2006 |
Publication |
Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci. |
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Volume |
84 |
Issue |
11 |
Pages |
3104-3109 |
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Keywords |
Animal Feed/*analysis; Animal Nutrition Physiology; Animals; Diet/*veterinary; Digestion/*physiology; Feeding Behavior/*physiology; Horses/*physiology; Male; Poaceae/*metabolism |
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Abstract |
Thousands of hectares of timothy (Phleum pretense L.) grown in the Mid-Atlantic region are infected by cereal rust mite (Abacarus hysterix) that causes discoloration and curling of leaves, decreased nutritional quality, and substantial decreases in yield. A decline in production of timothy hay can lower income for hay producers and cause horse owners to search for alternative hays. Low alkaloid reed canarygrass (Phalaris arundinacea L.) hay has potential as an alternative to timothy hay because it grows well in the Mid-Atlantic region, is believed to have a similar nutrient quality to timothy, and is not as susceptible to cereal rust mite. Eleven mature, stalled Thoroughbred geldings (549 +/- 12.1 kg) that were exercised daily were used to compare voluntary DMI and apparent nutrient DM digestibility of timothy and low-alkaloid Chiefton variety reed canarygrass hay. Horses were paired by age and BW and randomly assigned to timothy or reed canarygrass hay during a 14-d period to measure voluntary DMI followed by a 4-d period to measure apparent DM digestibility. Both hays met the minimum requirements for DE, CP, Ca, P, K, Fe, and Mn, but they did not meet the minimum requirements for Cu, Zn, and Na for horses at maintenance and averaging 550 kg of BW. Timothy hay seemed to have a lower CP concentration (14.4%) compared with reed canarygrass hay (17.1%) and a more desirable Ca:P ratio at 1.6:1 compared with 0.8:1 for reed canarygrass hay. Horses fed timothy consumed more hay (P <0.001) during the voluntary DMI period compared with horses fed reed canarygrass. Greater voluntary DMI of timothy occurred on d 1, 3, and 5 (P <0.05), but DMI was similar for other days. Apparent DM digestibility was greater in horses fed timothy hay by 9.6% compared with horses fed reed canarygrass hay (P <0.05). Horses fed timothy had greater DM digestibility of ADF (P = 0.001), NDF (P = 0.001), sugar (P = 0.05), and Ca (P = 0.001) but lower apparent DM digestibility of CP (P = 0.012) and crude fat (P = 0.004). Timothy hay was superior in voluntary DMI and apparent DM digestibility compared with low-alkaloid reed canarygrass hay fed to horses. |
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Address |
Department of Animal and Avian Sciences, University of Maryland, College Park 20742, USA. amyburk@umd.edu |
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1525-3163 |
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Notes |
PMID:17032805 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4236 |
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Permanent link to this record |
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Author |
Nicol, C.J.; Davidson, H.P.D.; Harris, P.A.; Waters, A.J.; Wilson, A.D. |
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Title |
Study of crib-biting and gastric inflammation and ulceration in young horses |
Type |
Journal Article |
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Year |
2002 |
Publication |
The Veterinary record |
Abbreviated Journal |
Vet. Rec. |
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Volume |
151 |
Issue |
22 |
Pages |
658-662 |
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Keywords |
Animal Husbandry/methods; Animals; Antacids/therapeutic use; *Behavior, Animal; Diet/veterinary; Endoscopy, Gastrointestinal/veterinary; Feces/chemistry; Female; Gastritis/diet therapy/physiopathology/*veterinary; Horse Diseases/diet therapy/*physiopathology/psychology; Horses; Hydrogen-Ion Concentration; Male; Random Allocation; Stereotyped Behavior/*physiology; Stomach Ulcer/diet therapy/physiopathology/*veterinary; Treatment Outcome; Weaning |
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Abstract |
Nineteen young horses that had recently started to perform the stereotypy of crib-biting were compared with 16 non-stereotypic horses for 14 weeks. After initial observations of their behaviour and an endoscopic examination of the condition of their stomachs, the horses were randomly allocated to a control or an antacid diet At the start of the trial, the stomachs of the crib-biting foals were significantly more ulcerated and inflamed than the stomachs of the normal foals. In addition, the faecal pH of the crib-biting foals (6.05) was significantly lower than that of the normal foals (6.58). The antacid diet resulted in a significant improvement in the condition of the horses' stomachs. The crib-biting behaviour declined in most of the foals, regardless of their diet, but tended to decline to a greater extent in the foals on the antacid diet. |
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Department of Clinical Veterinary Science, University of Bristol, Langford House, Bristol BS40 5DU |
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English |
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0042-4900 |
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PMID:12498408 |
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refbase @ user @ |
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83 |
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