9a Nutrient Requirements of Working Dogs Flashcards Preview

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What are some types of working dogs?

- guide dogs
- service dogs
- livestock herding dogs
- livestock guarding dogs
- protection dogs
- hunting dogs
- racing dogs
- sled dogs


Muscles are adapted to use more of what nutrient?

- most muscle fibres are highly oxidative
- metabolize more free fatty acids; 2x rate of humans
- use beta oxidation


What do working dogs have a higher requirement for?

- energy
- protein
- minerals
- vitamins


What do the nutrient requirements of working dogs depend on?

- environment
- duration
- intensity
- stress level
- dog's body composition and temperament
- requirement = maintenance + exercise


Describe the water requirement of working dogs.

- sled dogs: water increases from 1L/d without exercise to 5L/d during 450km race
- greyhounds: dehydration rather before race than after race; cold water bath and access to water immediately after race


Describe the energy requirement of sled dogs and greyhounds.

- sled dogs: at -20 and open wind chill at rest 215 kcal ME x BW ^0.75
- energy for movement proportional to distance traveled rather than speed


Describe the other nutrient requirements of sled dogs

- require high fat, high protein diet
- less minerals and vitamins per unit energy because of higher food intake (rate of increase less steep than rate of increase for energy)
- higher level of antioxidant vitamins due to free radical production in muscle


Describe the nutrient requirements of racing dogs.

- moderately high fat, moderate protein


What is the metabolic switch?

- muscle cells extract fat directly from blood


Why is it better to feed sled dogs wet food?

- extruded feeds must contain starch to produce kibble, so canned high fat high protein diet might be better