Animal Behaviour, handling & wellbeing
Course Structure and Pracs
The presenter mentioned the importance of practicums (pracs).
Students were encouraged to work on their assigned videos at their own pace.
The videos are each approximately ten minutes long and cover different behaviors, highlighting that re-watching may be necessary for data collection.
The thorough completion of the tutorial might take about 30 minutes to an hour.
Confirmation was made that all students received their group assignments for the practicals, and resources are available on the course's Blackboard site.
Learning Outcomes from Previous Week
A recap of the previous lecture emphasized the interconnectedness of three key elements: the animal, the environment, and human influence.
Discussions included:
Types of learning: innate vs. learned, non-associative vs. associative.
Key learning types:
Habituation
Sensitization
Operant Conditioning
Classical Conditioning
The importance of understanding these concepts was highlighted as they frequently appear on exams.
The focus is on recognizing behaviors and applying core concepts to specific examples.
Upcoming Topics
The current session was set to cover:
Biological basis of behavior
Touching upon genetics, neuroscience, and endocrinology.
Stress response and its implications.
Spatial and social behaviors in animals, crucial for management practices.
The role of domestication, including candidate species for domestication.
Genetics
Genetic variation influences behavioral traits among individuals.
Heritability, denoted by the symbol h^2, was explained:
High heritability indicates strong genetic influence on traits over generations.
An estimated heritability of 30% indicates that 30% of behavioral differences among individuals can be attributed to genetics, not that 30% of an individual's behavior is genetic.
Example of horse temperament showed heritability between 0.25 and 0.35 through specific behavioral testing.
Reactions of horses to novel stimuli and factors that might cause variability were discussed.
The implications of heritability on traits like aggression in dogs were examined, emphasizing the importance of training and socialization over natural genetics in some cases.
Neuroscience Overview
The core components of the brain were outlined as critical for understanding animal behavior, including:
Brain stem: controls vital functions such as breathing and heartbeat.
Cerebellum: responsible for coordination and balance.
Limbic system: an emotional center managing responses to fear and memory.
Cerebral cortex: involved in higher order processing and decision-making.
The comparative brain structure in animals was discussed, emphasizing differences in behavior caused by brain size and complexity.
The significance of emotional responses in prey animals, like horses, was highlighted through mention of the limbic system's role in fear responses.
Stress Responses
A brief overview of physiological responses caused by stressors:
Acute stress response is characterized by immediate reactions like adrenaline release via the sympathetic nervous system.
Chronic stress activates the HPA axis, increasing cortisol levels, which can have long-term effects on behavior and health.
The relationship between stress management and animal welfare was emphasized, stating that inadequate handling can lead to significant welfare concerns.
Endocrinology
Hormones were defined as messengers affecting behavior through action on various organs and systems within the body.
Examples included:
Insulin, ghrelin (hunger signaling), leptin (satiety signaling).
The intricate relationship between hormonal fluctuations and behavior was noted, particularly in reproductive cycles.
Ingestive Behavior
Ingestive behavior was designated as a complex and vital aspect of animal management.
Factors influencing feed intake:
Physiological states (e.g. pregnancy or lactation).
Environmental conditions (e.g. temperature impacts).
The metabolic signals from hormones like ghrelin and leptin play crucial roles in this behavior.
Domestication
Domestication involves genetic changes due to selective breeding across generations, promoting traits for easier management.
Important distinctions were made between domesticated and tamed animals, defining domestication as a long-term genetic transformation.
This discussion emphasized characteristics that favor domestication:
Domestic animals must be herbivores, grow fast, have a friendly disposition, and breed readily.
Examples of failed domestication were provided (e.g., zebras and pandas).
Notable historical contexts regarding how animals become domesticated were covered, including following pathways like commensal relationships (e.g., cats) and direct management for productivity (e.g., cattle).
Behavioral Considerations
Spacing Behavior
Importance of understanding spacing behavior included:
Animals require space for food, mating, avoiding conflicts, and disease avoidance.
Three key types of space:
Home range: an area known and used for resource gathering, varies by species.
Territory: a space defended from others, typically involving agonistic behavior.
Personal space: the most intensely defended area around an individual.
The management implications of spacing behavior were discussed, including housing design and stocking density in production contexts.
Social Behavior
Dominance was explained as a context-dependent relationship influenced by past interactions centered around resource access.
Discussion of various dominance hierarchies emphasized that it is not an inherent trait but situational.
The complexities of social facilitation were explored, illustrating both benefits (e.g. safety in numbers) and potential risks (e.g. spreading fear among a group).
Examples of varying behavioral displays across species were provided, reinforcing the importance of understanding social interactions in animal management for welfare and efficiency.
Conclusion
The session concluded with acknowledgments for audience patience during technical difficulties and a summary of key points for review.
Encouragement was extended for further discussion and questions amongst peers regarding practical applications of these concepts in animal management.
Explain the biological basis of animal behaviour - including genetics, brain structure, and hormones
Genetic variation influences behavioral traits among individuals.
Heritability, denoted by the symbol h^2, was explained:
High heritability indicates strong genetic influence on traits over generations.
Core components of the brain critical for understanding animal behavior include:
Brain stem: controls vital functions such as breathing and heartbeat.
Cerebellum: responsible for coordination and balance.
Limbic system: an emotional center managing responses to fear and memory.
Cerebral cortex: involved in higher order processing and decision-making.
Recognise stress responses - and their impact on animal welfare and productivity
Acute stress response is characterized by immediate reactions like adrenaline release via the sympathetic nervous system.
Chronic stress activates the HPA axis, increasing cortisol levels, which can have long-term effects on behavior and health.
The relationship between stress management and animal welfare was emphasized, stating that inadequate handling can lead to significant welfare concerns.
Describe the three types of spatial behaviour - home range, territory, and personal space
Importance of understanding spacing behavior includes:
Animals require space for food, mating, avoiding conflicts, and disease avoidance.
Three key types of space:
Home range: an area known and used for resource gathering, varies by species.
Territory: a space defended from others, typically involving agonistic behavior.
Personal space: the most intensely defended area around an individual.
Analyse how dominance hierarchies function - and their management implications
Dominance was explained as a context-dependent relationship influenced by past interactions centered around resource access.
Discussion of various dominance hierarchies emphasized that it is not an inherent trait but situational.
Understand social facilitation - and how animals copy behaviours from group members
The complexities of social facilitation were explored, illustrating both benefits (e.g. safety in numbers) and potential risks (e.g. spreading fear among a group).
Apply behavioural knowledge to animal management - including housing design, stocking densities, and handling practices
The management implications of spacing behavior were discussed, including housing design and stocking density in production contexts.
Evaluate the role of domestication - in shaping modern animal behaviour and management needs
Domestication involves genetic changes due to selective breeding across generations, promoting traits for easier management.
Important distinctions were made between domesticated and tamed animals, defining domestication as a long-term genetic transformation.
Notable historical contexts regarding how animals become domesticated were covered, including following pathways like commensal relationships (e.g., cats) and direct management for productivity (e.g., cattle).