Exercise influences different endocrine and metabolic parameters, and information in the literature is sparse for some of these hormones and metabolites in the exercising horse. The aim of the present experiment was to study the metabolic response to exercise when feeding diets with varying carbohydrate composition (fibre and starch) under experimental conditions where diet and exercise were standardised and controlled. The response was investigated in a 4×4 Latin square design experiment using four Norwegian Coldblooded trotter horses. The dietary treatments were two fibre based diets, hay only and hay (85% of dry matter intake (DMI)) supplemented with molassed sugar beet pulp (mSBP) (15% of DMI), or two starch based diets of hay (68% of DMI) and barley (32% of DMI), and hay (68% of DMI), barley (26% of DMI) and mSBP (6% of DMI). Each diet was fed for 28 days; 16 days of adaptation followed by 12 days of data collection. 4 h after the morning feeding at 06:00 the horses performed a standardised exercise test (SET) lasting 45 min. Blood samples were taken before feeding the morning meal at 06:00, before the SET (10:00), after the SET (10:45) and after recovery from exercise (15:00), and plasma samples were analysed for relevant metabolites and hormones. Plasma leptin concentrations increased after exercise but were not affected by diet, whereas diet and exercise had no effect on the plasma concentrations of ghrelin and insulin like growth factor 1 (IGF-1). Furthermore, diet influenced the plasma concentrations of short-chained fatty acids (SCFA) more than exercise. The results provide important comparative information that can be useful in studies where diet and exercise cannot be controlled, e.g. in field studies.
Purchase
Buy instant access (PDF download and unlimited online access):
Institutional Login
Log in with Open Athens, Shibboleth, or your institutional credentials
Personal login
Log in with your brill.com account
Bach Knudsen, K.E., 1997. Carbohydrate and lignin contents of plant materials used in animal feeding. Animal Feed Science and Technology 67: 319-338.
'Carbohydrate and lignin contents of plant materials used in animal feeding ' () 67 Animal Feed Science and Technology : 319 -338 .
Buff, P.R., Dodds, A.C., Morrison, C.D., Whitley, N.C., McFadin, E.L., Daniel, J.A., Djiane, J. and Keisler, D.H., 2002. Leptin in horses: tissue localization and relationship between peripheral concentrations of leptin and body condition. Journal of Animal Science 80: 2942-2948.
'Leptin in horses: tissue localization and relationship between peripheral concentrations of leptin and body condition ' () 80 Journal of Animal Science : 2942 -2948 .
Cartmill, J.A., Thompson Jr., D.L., Storer, W.A., Crowley, J.C., Huff, N.K. and Waller, C.A., 2005. Effect of dexamethasone, feeding time, and insulin infusion on leptin concentrations in stallions. Journal of Animal Science 83: 1875-1881.
'Effect of dexamethasone, feeding time, and insulin infusion on leptin concentrations in stallions ' () 83 Journal of Animal Science : 1875 -1881 .
Coverdale, J.A., Moore, J.A., Tyler, H.D. and Miller-Auwerda, P.A., 2004. Soybean hulls as an alternative feed for horses. Journal of Animal Science 82: 1663-1668.
'Soybean hulls as an alternative feed for horses ' () 82 Journal of Animal Science : 1663 -1668 .
Ford, E.J.H. and Simmons, H.A., 1985. Gluconeogenesis from caecal propionate in the horse. British Journal of Nutrition 53: 55-60.
'Gluconeogenesis from caecal propionate in the horse ' () 53 British Journal of Nutrition : 55 -60 .
Garner, H.E., Coffman, J.R., Hahn, A.W., Hutcheson, D.P. and Tumbleson, M.E., 1975. Equine laminitis of alimentary origin: an experimental model. American Journal of Veterinary Research 36: 441-444.
'Equine laminitis of alimentary origin: an experimental model ' () 36 American Journal of Veterinary Research : 441 -444 .
Gordon, M.E. and McKeever, K.H., 2005. Diurnal variation of ghrelin, leptin, and adiponectin in Standardbred mares. Journal of Animal Science 83: 2365-2371.
'Diurnal variation of ghrelin, leptin, and adiponectin in Standardbred mares ' () 83 Journal of Animal Science : 2365 -2371 .
Gordon, M.E. and McKeever, K.H., 2006. Oral and intravenous carbohydrate challenges decrease active ghrelin concentrations and alter hormones related to control of energy metabolism in horses. Journal of Animal Science 84: 1682-1690.
'Oral and intravenous carbohydrate challenges decrease active ghrelin concentrations and alter hormones related to control of energy metabolism in horses ' () 84 Journal of Animal Science : 1682 -1690 .
Gordon, M.E., McKeever, K.H., Bertos, C.L. and Manso Filho, H.C., 2007. Exercise-induced alterations in plasma concentrations of ghrelin, adiponectin, leptin, glucose, insulin, and cortisol in horses. Veterinary Journal 173: 532-540.
'Exercise-induced alterations in plasma concentrations of ghrelin, adiponectin, leptin, glucose, insulin, and cortisol in horses ' () 173 Veterinary Journal : 532 -540 .
Gordon, M.E., McKeever, K.H., Bokman, S., Betros, C.L., Manso-Filho, H., Liburt, N. and Streltsova, J., 2006. Interval exercise alters feed intake as well as leptin and ghrelin concentrations in Standardbred mares. Equine Veterinary Journal 38: 596-605.
'Interval exercise alters feed intake as well as leptin and ghrelin concentrations in Standardbred mares ' () 38 Equine Veterinary Journal : 596 -605 .
Hudson, J.M., Cohen, N.D., Gibbs, P.G. and Thompson, J.A., 2001. Feeding practices associated with colic in horses. Journal of American Veterinary Medical Association 219: 1419-1425.
'Feeding practices associated with colic in horses ' () 219 Journal of American Veterinary Medical Association : 1419 -1425 .
Ingerslev, A.K., Theil, P.K., Hedemann, M.S., Lærke, H.N. and Bach Knudsen, K.E., 2014. Resistant starch and arabinoxylan augment SCFA absorption, but affect postprandial glucose and insulin responses differently. British Journal of Nutrition 111: 1564-1576.
'Resistant starch and arabinoxylan augment SCFA absorption, but affect postprandial glucose and insulin responses differently ' () 111 British Journal of Nutrition : 1564 -1576 .
Jansson, A. and Lindberg, J.E., 2012. A forage-only diet alters the metabolic response of horses in training. Animal 6: 1939-1946.
'A forage-only diet alters the metabolic response of horses in training ' () 6 Animal : 1939 -1946 .
Jensen, R.B., Austbø, D., Bach Knudsen, K.E. and Tauson, A.H., 2014. The effect of dietary carbohydrate composition on apparent total tract digestibility, feed mean retention time, nitrogen and water balance in horses. Animal 8: 1788-1796.
'The effect of dietary carbohydrate composition on apparent total tract digestibility, feed mean retention time, nitrogen and water balance in horses ' () 8 Animal : 1788 -1796 .
Jensen, R.B., Austbø, D., Blache, D., Bach Knudsen, K.E. and Tauson, A.H., 2016. The effect of feeding barley or hay alone or in combination with molassed sugar beet pulp on the metabolic responses in plasma and caecum of horses. Animal Feed Science and Technology 214: 53-65.
'The effect of feeding barley or hay alone or in combination with molassed sugar beet pulp on the metabolic responses in plasma and caecum of horses ' () 214 Animal Feed Science and Technology : 53 -65 .
Jose-Cunilleras, E., Hinchcliff, K.W., Sams, R.A., Devor, S.T. and Linderman, J.K., 2002. Glycemic index of a meal fed before exercise alters substrate use and glucose flux in exercising horses. Journal of Applied Physiology 92: 117-128.
'Glycemic index of a meal fed before exercise alters substrate use and glucose flux in exercising horses ' () 92 Journal of Applied Physiology : 117 -128 .
Karlsson, C.P., Jansson, A., Essèn-Gustavsson, B. and Lindberg, J.E., 2002. Effect of molassed sugar beet pulp on nutrient utilisation and metabolic parameters during exercise. Equine Veterinary Journal 34: 44-49.
'Effect of molassed sugar beet pulp on nutrient utilisation and metabolic parameters during exercise ' () 34 Equine Veterinary Journal : 44 -49 .
Larsson, K. and Bengtsson, S., 1983. Bestämning av lättilgängeliga kolhydrater i växtmaterial (Determination of readily available carbohydrates in plant material). Chemistry Methods Report No. 22. National Laboratory of Agricultural Chemistry, Uppsala, Sweden.
'Bestämning av lättilgängeliga kolhydrater i växtmaterial (Determination of readily available carbohydrates in plant material) ', ().
Luthersson, N., Nielsen, K.H., Harris, P. and Parkin, T.D.H., 2009. Risk factors associated with equine gastric ulceration syndrome (EGUS) in 201 horses in Denmark. Equine Veterinary Journal 41: 625-630.
'Risk factors associated with equine gastric ulceration syndrome (EGUS) in 201 horses in Denmark ' () 41 Equine Veterinary Journal : 625 -630 .
McKeever, K.H., 2011. Endocrine alterations in the equine athlete: an update. Veterinary Clinics of North America: Equine Practice 27: 197-218.
'Endocrine alterations in the equine athlete: an update ' () 27 Veterinary Clinics of North America: Equine Practice : 197 -218 .
Moore-Colyer, M.J.S., Hyslop, J.J., Longland, A.C. and Cuddeford, D., 2002. The mobile bag technique as a method for determining the degradation of four botanically diverse fibrous feedstuffs in the small intestine and total digestive tract of ponies. British Journal of Nutrition 88: 729-740.
'The mobile bag technique as a method for determining the degradation of four botanically diverse fibrous feedstuffs in the small intestine and total digestive tract of ponies ' () 88 British Journal of Nutrition : 729 -740 .
National Research Council (NRC), 2007. Nutrient requirements of horses, 6th ed. National Academies Press, Washington, DC, USA.
Spiegelman, B.M. and Flier, J.S., 2001. Obesity and the regulation of energy balance. Cell 104: 531-543.
'Obesity and the regulation of energy balance ' () 104 Cell : 531 -543 .
Van der Kolk, J.H., 2014. Endocrine function during exercise and response to training. In: Hinchcliff, K.W., Kaneps, A.J. and Geor, R.J. (eds.) Equine sports medicine and surgery. Saunders, London, UK, pp. 769-785.
'Endocrine function during exercise and response to training ', in Equine sports medicine and surgery , () 769 -785 .
Von Engelhardt, W., Rönnau, K., Rechkemmer, G. and Sakata, T., 1989. Absorption of short-chain fatty acids and their role in the hindgut of monogastric animals. Animal Feed Science and Technology 23: 43-53.
'Absorption of short-chain fatty acids and their role in the hindgut of monogastric animals ' () 23 Animal Feed Science and Technology : 43 -53 .
Willing, B., Vörös, A., Roos, S., Jones, C., Jansson, A. and Lindberg, J.E., 2009. Changes in faecal bacteria associated with concentrate and forage-only diets fed to horses in training. Equine Veterinary Journal 41: 908-914.
'Changes in faecal bacteria associated with concentrate and forage-only diets fed to horses in training ' () 41 Equine Veterinary Journal : 908 -914 .
Wren, A.M., Seal, L.J., Cohen, M.A., Brynes, A.E., Frost, G.S., Murphy, K.G., Dhillo, W.S., Ghatei, M.A. and Bloom, S.R., 2001. Ghrelin enhances appetite and increases food intake in humans. Journal of Clinical Endocrinology and Metabolism 86: 5992-5997.
'Ghrelin enhances appetite and increases food intake in humans ' () 86 Journal of Clinical Endocrinology and Metabolism : 5992 -5997 .
| All Time | Past 365 days | Past 30 Days | |
|---|---|---|---|
| Abstract Views | 678 | 147 | 16 |
| Full Text Views | 19 | 0 | 0 |
| PDF Views & Downloads | 20 | 0 | 0 |
Exercise influences different endocrine and metabolic parameters, and information in the literature is sparse for some of these hormones and metabolites in the exercising horse. The aim of the present experiment was to study the metabolic response to exercise when feeding diets with varying carbohydrate composition (fibre and starch) under experimental conditions where diet and exercise were standardised and controlled. The response was investigated in a 4×4 Latin square design experiment using four Norwegian Coldblooded trotter horses. The dietary treatments were two fibre based diets, hay only and hay (85% of dry matter intake (DMI)) supplemented with molassed sugar beet pulp (mSBP) (15% of DMI), or two starch based diets of hay (68% of DMI) and barley (32% of DMI), and hay (68% of DMI), barley (26% of DMI) and mSBP (6% of DMI). Each diet was fed for 28 days; 16 days of adaptation followed by 12 days of data collection. 4 h after the morning feeding at 06:00 the horses performed a standardised exercise test (SET) lasting 45 min. Blood samples were taken before feeding the morning meal at 06:00, before the SET (10:00), after the SET (10:45) and after recovery from exercise (15:00), and plasma samples were analysed for relevant metabolites and hormones. Plasma leptin concentrations increased after exercise but were not affected by diet, whereas diet and exercise had no effect on the plasma concentrations of ghrelin and insulin like growth factor 1 (IGF-1). Furthermore, diet influenced the plasma concentrations of short-chained fatty acids (SCFA) more than exercise. The results provide important comparative information that can be useful in studies where diet and exercise cannot be controlled, e.g. in field studies.
| All Time | Past 365 days | Past 30 Days | |
|---|---|---|---|
| Abstract Views | 678 | 147 | 16 |
| Full Text Views | 19 | 0 | 0 |
| PDF Views & Downloads | 20 | 0 | 0 |