Control of behaviour

What is there diversity in in sensory capacities

• UV light - species of birds

• Infrared radiation - snakes

• Sonar - bats

• Olfaction - dogs

What are the sensory capacities of sheep

• Wide angle vision

• Dichromats with cones - sensitive to sudden movement

• Excellent distance vision

• Cannot focus on nearby objects

What are the sensory capacities of cows

• Sensitive to high frequencies

• Most disturbed by intermittent high pitched sounds

What does the vomeronasal orgando

Detect chemical signals associated with sexual behaviour, aggression and social interaction

What are the different types of external stimuli

• Physical - light, temperature, humidity, gravity

• Biological - food, predator

• Social - alarm call, social odour, courtship

What external stimuli effect pig feeding

• Food availability

• Predation risk

• Competition

What internal stimuli effect pig feeding

• Gut distension

• Blood nutrient levels

What motivational conflicts are seen in natural environements

• Agonistic encouters

• Courtship

• Predator avoidance

How do animals respond to stress in natural environments

• Increased activity in autonomic nervous system

• Release of adrenaline

• Increased sweat gland activity, heart beat and breathing rate

• Hair erect

• Blood diverted to skeletal muscle

What are different causes of stress in artificial environments

• Social stress

• Handling and isolation

• Driven to weighing scales

• Loaded onto trucks

What are the pathological responses to prolonged stress

• Behavioral exhaustion

• Carbohydrate reserves in blood and muscle become exhausted

• Signs of physical muscle damage