Lecture 11 - Freedom from Hunger and Thirst Flashcards
What does severe vs mild nutrient/water deprivation lead to
Severe: illness, poor performance, inability to function, poor welfare, death
Mild: effects heath and vigor
What does ad libitum feeding lead to
Increased incidence of disease and poor reproductive performance, poor welfare
What is malnutrition?
NOT starvation
inappropriate balance or quality of feed
How do you measure water consumption
Water disappearance
What happens when the number of cows per feeder increases?
Time spent feeding decreases, increased eating rate
Briefly describe the requirements in place for food and water according to the codes of practice for Canadian kennel operations
Fed: once every 24h (mature). Spoiled food not fed. Storage bins, appropriate ration, cleanliness
Water: always available, potable, unfrozen, clean
What does quantitative restriction of food lead to. When does this occur?
Leads to modified behaviour/frequency
Develops to stereotypie
Might occur before then stop after or increase after (species dependent)
Rate depends on level restricted
What does qualitative restriction of food lead to
Lower quality fed ad libitum led to preferred patterns of eating being seen (ruminants. No signs of hunger/stress. Reduced stereotypies
What is leptin. What happens when can’t produce it
Regulates appetite by signaling brain
Food intake would be uncontrolled
What psychologically regulates hunger
Stress, palatability, boredom
Variations in feed/feeding=
Physical type (pellets, meal)
Feeder design (competition?)
Access (#, free or work for it?)
What does undernourished mean?
Insufficient amount of nutrients
When is malnourishment intentional?
Qualitative restriction (veal calves deficient in iron)
Quantitative restriction (25% broiler breeders)
Undernutrition and malnutrition lead to
Use of reserves, competition, impacted immune system, increased uptake/foraging, offspring affected
What leads to thirst
Reduction of fluid content in body compartments
