Variation in Behavioral Reactivity Is Associated with Cooperative Restraint Training Efficiency

Area of Science:

• Primate behavior and welfare
• Animal training methodologies
• Laboratory animal science

Background:

• Cooperative training enhances laboratory animal well-being and research validity.
• Understanding individual variation in training is crucial for program efficiency.
• Rhesus monkeys are common models in biomedical research, often requiring handling and restraint.

Purpose of the Study:

• To document an updated method for training rhesus monkeys to cooperatively accept restraint.
• To investigate the relationship between pre-training behavioral reactivity and training outcomes.
• To identify factors influencing training success in rhesus macaques.

Main Methods:

• 14 adult male rhesus monkeys were trained to accept restraint in a primate chair.
• Training involved raising the head above a yoke and accepting yoke closure.
• Behavioral reactivity to humans and conspecifics was assessed prior to training.

Main Results:

• Monkeys achieved cooperative restraint acceptance in an average of 6.36 days.
• Individual differences in submissive-affiliative reactivity to humans predicted training success.
• Higher human-directed reactivity correlated with less willingness to train, lower attentiveness, and increased training duration.

Conclusions:

• Rhesus macaques can be rapidly trained to cooperate with restraint.
• Pre-training assessment of individual temperament, specifically human-directed reactivity, can inform tailored training programs.
• Personalized training strategies can optimize efficiency and enhance animal welfare in laboratory settings.