Week 1
Nutrients |
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Energy
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Text Transcript
Follow along with the audio...
- Not a nutrient; product of oxidation of organic compounds
- Most biological processes require energy
- Greatest of animal requirements
- Dietary primary source of energy - CHO
- Units
- Calorie (cal)
- Amount of heat required to increase the temperature of one gram of water by one degree Celsius
- Kilocalorie (kcal)
- Equals one thousand calories
- Megacalorie (Mcal)
- Equals one million calories
- Joule
- One calorie equals 4.184 joules
- Effects of energy deficiencies
- Decreased production level
- Decreased performance level
- Decreased reproduction efficiency
- Increased incidence of metabolic disorders
- Metabolic body weight (MBW)
- Compare interspecies energy requirements
- MBW = BW^(0.75)
- Additional factors influencing energy requirements
- Activity level
- Production level
- Environmental conditions
- Nutritional deficiencies
- Health
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