Effect of increased dietary protein and decreased dietary carbohydrate on performance and body composition in racing Greyhounds

R C Hill, D D Lewis, K C Scott, M Omori, M Jackson, D A Sundstrom, G L Jones, J R Speakman, C A Doyle, R F Butterwick

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Objective-To determine effects of increased dietary protein and decreased dietary carbohydrate on hematologic variables, body composition, and racing performance in Greyhounds.

Animals-8 adult Greyhounds.

Procedure-Dogs were fed a high-protein (HP; 37% metabolizable-energy [ME] protein, 33% ME fat. 30% ME carbohydrate) or moderate-protein (MP; 24% ME protein, 33% ME fat, 43% ME carbohydrate) extruded diet for 11 weeks. Dogs subsequently were fed the other diet for 11 weeks (crossover design). Dogs raced a distance of 500 m twice weekly. Rectal temperature, hematologic variables before and after racing, plasma volume, total body water, body weight, average weekly food intake, and race times were measured at the end of each diet period.

Results-When dogs were fed the MP diet, compared with the HP diet, values (mean +/- SD) differed significantly for race time (32.43 +/- 0.48 vs 32.61 +/- 0.50 seconds), body weight (32.8 +/- 2.5 vs 32.2 +/- 2.9 kg), Hct before (56 +/- 4 vs 54 +/- 6%) and after (67 +/- 3 vs 64 +/- 8%) racing, and glucose (131 +/- 16 vs 151 +/- 27 mg/dl) and triglyceride (128 +/- 17 vs 104 +/- 28 mg/dl) concentrations after racing.

Conclusions and Clinical Relevance-Greyhounds were 0.18 seconds slower (equivalent to 0.08 m/s or 2.6 m) over a distance of 500 m when fed a diet with increased protein and decreased carbohydrate. improved performance attributed to feeding meat to racing Greyhounds apparently is not attributable to increased dietary protein and decreased dietary carbohydrate.

Original languageEnglish
Pages (from-to)440-447
Number of pages8
JournalAmerican Journal of Veterinary Research
Volume62
Publication statusPublished - 2001

Keywords

  • PLASMA-VOLUME
  • RUNNING GREYHOUND
  • DOGS
  • EXERCISE
  • BIOCHEMISTRY
  • HEMATOLOGY
  • OXYGEN

Cite this

Hill, R. C., Lewis, D. D., Scott, K. C., Omori, M., Jackson, M., Sundstrom, D. A., ... Butterwick, R. F. (2001). Effect of increased dietary protein and decreased dietary carbohydrate on performance and body composition in racing Greyhounds. American Journal of Veterinary Research, 62, 440-447.

Effect of increased dietary protein and decreased dietary carbohydrate on performance and body composition in racing Greyhounds. / Hill, R C ; Lewis, D D ; Scott, K C ; Omori, M ; Jackson, M ; Sundstrom, D A ; Jones, G L ; Speakman, J R ; Doyle, C A ; Butterwick, R F .

In: American Journal of Veterinary Research, Vol. 62, 2001, p. 440-447.

Research output: Contribution to journalArticle

Hill, RC, Lewis, DD, Scott, KC, Omori, M, Jackson, M, Sundstrom, DA, Jones, GL, Speakman, JR, Doyle, CA & Butterwick, RF 2001, 'Effect of increased dietary protein and decreased dietary carbohydrate on performance and body composition in racing Greyhounds', American Journal of Veterinary Research, vol. 62, pp. 440-447.
Hill, R C ; Lewis, D D ; Scott, K C ; Omori, M ; Jackson, M ; Sundstrom, D A ; Jones, G L ; Speakman, J R ; Doyle, C A ; Butterwick, R F . / Effect of increased dietary protein and decreased dietary carbohydrate on performance and body composition in racing Greyhounds. In: American Journal of Veterinary Research. 2001 ; Vol. 62. pp. 440-447.
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abstract = "Objective-To determine effects of increased dietary protein and decreased dietary carbohydrate on hematologic variables, body composition, and racing performance in Greyhounds.Animals-8 adult Greyhounds.Procedure-Dogs were fed a high-protein (HP; 37{\%} metabolizable-energy [ME] protein, 33{\%} ME fat. 30{\%} ME carbohydrate) or moderate-protein (MP; 24{\%} ME protein, 33{\%} ME fat, 43{\%} ME carbohydrate) extruded diet for 11 weeks. Dogs subsequently were fed the other diet for 11 weeks (crossover design). Dogs raced a distance of 500 m twice weekly. Rectal temperature, hematologic variables before and after racing, plasma volume, total body water, body weight, average weekly food intake, and race times were measured at the end of each diet period.Results-When dogs were fed the MP diet, compared with the HP diet, values (mean +/- SD) differed significantly for race time (32.43 +/- 0.48 vs 32.61 +/- 0.50 seconds), body weight (32.8 +/- 2.5 vs 32.2 +/- 2.9 kg), Hct before (56 +/- 4 vs 54 +/- 6{\%}) and after (67 +/- 3 vs 64 +/- 8{\%}) racing, and glucose (131 +/- 16 vs 151 +/- 27 mg/dl) and triglyceride (128 +/- 17 vs 104 +/- 28 mg/dl) concentrations after racing.Conclusions and Clinical Relevance-Greyhounds were 0.18 seconds slower (equivalent to 0.08 m/s or 2.6 m) over a distance of 500 m when fed a diet with increased protein and decreased carbohydrate. improved performance attributed to feeding meat to racing Greyhounds apparently is not attributable to increased dietary protein and decreased dietary carbohydrate.",
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T1 - Effect of increased dietary protein and decreased dietary carbohydrate on performance and body composition in racing Greyhounds

AU - Hill, R C

AU - Lewis, D D

AU - Scott, K C

AU - Omori, M

AU - Jackson, M

AU - Sundstrom, D A

AU - Jones, G L

AU - Speakman, J R

AU - Doyle, C A

AU - Butterwick, R F

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N2 - Objective-To determine effects of increased dietary protein and decreased dietary carbohydrate on hematologic variables, body composition, and racing performance in Greyhounds.Animals-8 adult Greyhounds.Procedure-Dogs were fed a high-protein (HP; 37% metabolizable-energy [ME] protein, 33% ME fat. 30% ME carbohydrate) or moderate-protein (MP; 24% ME protein, 33% ME fat, 43% ME carbohydrate) extruded diet for 11 weeks. Dogs subsequently were fed the other diet for 11 weeks (crossover design). Dogs raced a distance of 500 m twice weekly. Rectal temperature, hematologic variables before and after racing, plasma volume, total body water, body weight, average weekly food intake, and race times were measured at the end of each diet period.Results-When dogs were fed the MP diet, compared with the HP diet, values (mean +/- SD) differed significantly for race time (32.43 +/- 0.48 vs 32.61 +/- 0.50 seconds), body weight (32.8 +/- 2.5 vs 32.2 +/- 2.9 kg), Hct before (56 +/- 4 vs 54 +/- 6%) and after (67 +/- 3 vs 64 +/- 8%) racing, and glucose (131 +/- 16 vs 151 +/- 27 mg/dl) and triglyceride (128 +/- 17 vs 104 +/- 28 mg/dl) concentrations after racing.Conclusions and Clinical Relevance-Greyhounds were 0.18 seconds slower (equivalent to 0.08 m/s or 2.6 m) over a distance of 500 m when fed a diet with increased protein and decreased carbohydrate. improved performance attributed to feeding meat to racing Greyhounds apparently is not attributable to increased dietary protein and decreased dietary carbohydrate.

AB - Objective-To determine effects of increased dietary protein and decreased dietary carbohydrate on hematologic variables, body composition, and racing performance in Greyhounds.Animals-8 adult Greyhounds.Procedure-Dogs were fed a high-protein (HP; 37% metabolizable-energy [ME] protein, 33% ME fat. 30% ME carbohydrate) or moderate-protein (MP; 24% ME protein, 33% ME fat, 43% ME carbohydrate) extruded diet for 11 weeks. Dogs subsequently were fed the other diet for 11 weeks (crossover design). Dogs raced a distance of 500 m twice weekly. Rectal temperature, hematologic variables before and after racing, plasma volume, total body water, body weight, average weekly food intake, and race times were measured at the end of each diet period.Results-When dogs were fed the MP diet, compared with the HP diet, values (mean +/- SD) differed significantly for race time (32.43 +/- 0.48 vs 32.61 +/- 0.50 seconds), body weight (32.8 +/- 2.5 vs 32.2 +/- 2.9 kg), Hct before (56 +/- 4 vs 54 +/- 6%) and after (67 +/- 3 vs 64 +/- 8%) racing, and glucose (131 +/- 16 vs 151 +/- 27 mg/dl) and triglyceride (128 +/- 17 vs 104 +/- 28 mg/dl) concentrations after racing.Conclusions and Clinical Relevance-Greyhounds were 0.18 seconds slower (equivalent to 0.08 m/s or 2.6 m) over a distance of 500 m when fed a diet with increased protein and decreased carbohydrate. improved performance attributed to feeding meat to racing Greyhounds apparently is not attributable to increased dietary protein and decreased dietary carbohydrate.

KW - PLASMA-VOLUME

KW - RUNNING GREYHOUND

KW - DOGS

KW - EXERCISE

KW - BIOCHEMISTRY

KW - HEMATOLOGY

KW - OXYGEN

M3 - Article

VL - 62

SP - 440

EP - 447

JO - American Journal of Veterinary Research

JF - American Journal of Veterinary Research

SN - 0002-9645

ER -