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Effect of protein intake during training on biochemical and performance variables in sled dogs.
Am J Vet Res 1999; 60(7):789-95AJ

Abstract

OBJECTIVE

To determine effects of protein intake on blood variables, plasma volume, and maximal oxygen uptake (VO2max) in sled dogs undergoing rigorous training.

ANIMALS

32 Alaskan sled dogs, between 2 and 6 years old.

PROCEDURE

Dogs were assigned to 1 of 4 groups on the basis of age, sex, and ability. Isocaloric diets containing 18% (diet A), 23% (diet B), 29% (diet C), or 35% (diet D) of energy as protein were assigned randomly to each group and fed 1 month before and during a 12-week training period. Maximal oxygen uptake was measured at 0 (before training) and 12 weeks. Body weight, protein and energy intake, plasma volume, PCV, hemoglobin concentration, and serum biochemical variables were measured at 0, 8, and 12 weeks.

RESULTS

Serum biochemical variables, PCV, and hemoglobin concentration remained within reference ranges for all dogs. Dogs fed diet A had a decrease in VO2max and a greater rate of soft tissue injury throughout training, compared with dogs fed the other diets. At 12 weeks, dogs fed diets C and D had greater serum sodium concentration and hemoglobin concentration than did dogs fed diet A. Dogs fed diet D also had more plasma volume at 12 weeks than did dogs of any other group.

CONCLUSIONS AND CLINICAL RELEVANCE

Consumption of a diet with 18% dietary protein on an energy basis (3.0 g of protein/kg of body weight) is insufficient to meet the metabolic requirements of sled dogs in training. For intense interval work, a diet with 35% dietary protein as energy (6.0 g of protein/kg) may provide a performance advantage by promoting an increase in plasma volume.

Authors+Show Affiliations

Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853-6401, USA.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

10407468

Citation

Reynolds, A J., et al. "Effect of Protein Intake During Training On Biochemical and Performance Variables in Sled Dogs." American Journal of Veterinary Research, vol. 60, no. 7, 1999, pp. 789-95.
Reynolds AJ, Reinhart GA, Carey DP, et al. Effect of protein intake during training on biochemical and performance variables in sled dogs. Am J Vet Res. 1999;60(7):789-95.
Reynolds, A. J., Reinhart, G. A., Carey, D. P., Simmerman, D. A., Frank, D. A., & Kallfelz, F. A. (1999). Effect of protein intake during training on biochemical and performance variables in sled dogs. American Journal of Veterinary Research, 60(7), pp. 789-95.
Reynolds AJ, et al. Effect of Protein Intake During Training On Biochemical and Performance Variables in Sled Dogs. Am J Vet Res. 1999;60(7):789-95. PubMed PMID: 10407468.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of protein intake during training on biochemical and performance variables in sled dogs. AU - Reynolds,A J, AU - Reinhart,G A, AU - Carey,D P, AU - Simmerman,D A, AU - Frank,D A, AU - Kallfelz,F A, PY - 1999/7/17/pubmed PY - 1999/7/17/medline PY - 1999/7/17/entrez SP - 789 EP - 95 JF - American journal of veterinary research JO - Am. J. Vet. Res. VL - 60 IS - 7 N2 - OBJECTIVE: To determine effects of protein intake on blood variables, plasma volume, and maximal oxygen uptake (VO2max) in sled dogs undergoing rigorous training. ANIMALS: 32 Alaskan sled dogs, between 2 and 6 years old. PROCEDURE: Dogs were assigned to 1 of 4 groups on the basis of age, sex, and ability. Isocaloric diets containing 18% (diet A), 23% (diet B), 29% (diet C), or 35% (diet D) of energy as protein were assigned randomly to each group and fed 1 month before and during a 12-week training period. Maximal oxygen uptake was measured at 0 (before training) and 12 weeks. Body weight, protein and energy intake, plasma volume, PCV, hemoglobin concentration, and serum biochemical variables were measured at 0, 8, and 12 weeks. RESULTS: Serum biochemical variables, PCV, and hemoglobin concentration remained within reference ranges for all dogs. Dogs fed diet A had a decrease in VO2max and a greater rate of soft tissue injury throughout training, compared with dogs fed the other diets. At 12 weeks, dogs fed diets C and D had greater serum sodium concentration and hemoglobin concentration than did dogs fed diet A. Dogs fed diet D also had more plasma volume at 12 weeks than did dogs of any other group. CONCLUSIONS AND CLINICAL RELEVANCE: Consumption of a diet with 18% dietary protein on an energy basis (3.0 g of protein/kg of body weight) is insufficient to meet the metabolic requirements of sled dogs in training. For intense interval work, a diet with 35% dietary protein as energy (6.0 g of protein/kg) may provide a performance advantage by promoting an increase in plasma volume. SN - 0002-9645 UR - https://www.unboundmedicine.com/medline/citation/10407468/Effect_of_protein_intake_during_training_on_biochemical_and_performance_variables_in_sled_dogs_ DB - PRIME DP - Unbound Medicine ER -