How do rats respond to playing radio in the animal facility?

In the animal facility, a range of different sounds are present. On the one hand, rats and humans will regard sound and noise differently even within the audible range, but on the other hand mice and rats being very adaptable to the environment may adapt to living in a noisy facility with e.g. a radio playing. It was the aim of the present study to investigate whether two different strains of rats had different preferences for different kinds of sound patterns, including radio, and to get an indication of whether they are able to distinguish between different sound patterns. The present preference study revealed that rats were able to distinguish between different sound patterns. They showed a clear preference for silence to anything else, which may be taken as an indication that they feel disturbed by the sound from the speaker.

[1]  M. Villanúa,et al.  Acute noise stress, ACTH administration, and blood pressure alteration , 1992, Physiology & Behavior.

[2]  Noise stress and airway toxicity: a prospect for experimental analysis. , 1996, Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association.

[3]  HARALD KREBS,et al.  Effects of Stressful Noise on Eating and Non-eating Behavior in Rats , 1996, Appetite.

[4]  A. K. Hansen,et al.  The impact of cage ventilation on rats housed in IVC systems , 2003, Laboratory animals.

[5]  S. Mollenauer,et al.  Noise avoidance in the C57BL/6J mouse , 1992 .

[6]  Helmut Prior,et al.  Effects of predictable and unpredictable intermittent noise on spatial learning in rats , 2002, Behavioural Brain Research.

[7]  M. Murata,et al.  Teratogenic effects of noise in mice , 1989 .

[8]  E Björk,et al.  R-weighting provides better estimation for rat hearing sensitivity , 2000, Laboratory animals.

[9]  A. K. Hansen,et al.  Telemetry as a Method for Measuring the Impact of Housing Conditions on Rats' Welfare , 2003, Animal Welfare.

[10]  Music for Relactation , 2001, Science.

[11]  Henry E. Heffner,et al.  Audiogram of the hooded Norway rat , 1994, Hearing Research.

[12]  J. Daun,et al.  The effects of noise stress on leukocyte function in rats. , 1992, Research in nursing & health.

[13]  D. Men,et al.  Effect of prenatal stress on plasma corticosterone and catecholamines in response to footshock in rats , 1998, Physiology & Behavior.

[14]  G. Sales,et al.  Environmental ultrasound in laboratories and animal houses: a possible cause for concern in the welfare and use of laboratory animals , 1988, Laboratory animals.

[15]  F. Fornai,et al.  Brief and repeated noise exposure produces different morphological and biochemical effects in noradrenaline and adrenaline cells of adrenal medulla , 2002, Journal of anatomy.

[16]  G. Sales,et al.  Sound levels in rooms housing laboratory animals: An uncontrolled daily variable , 1993, Physiology & Behavior.

[17]  E. Borg.  Auditory thresholds in rats of different age and strain. A behavioral and electrophysiological study , 1982, Hearing Research.

[18]  G. D. Sales,et al.  Sources of Sound in the Laboratory Animal Environment: A Survey of the Sounds Produced by Procedures and Equipment , 1999, Animal Welfare.

[19]  P. Mañá,et al.  Music, immunity and cancer. , 2002, Life sciences.

[20]  A. K. Hansen,et al.  The impact of low levels of carbon dioxide on rats , 2003, Laboratory animals.

[21]  G. Keshet,et al.  Role of experimental conditions in determining differences in exploratory behavior of prenatally stressed rats. , 1996, Developmental psychobiology.

[22]  A. Anthony.  Criteria for acoustics in animal housing. , 1963, Laboratory animal care.

[23]  A. K. Hansen,et al.  Consequences of enhancing environmental complexity for laboratory rodents — a review with emphasis on the rat , 2004, Animal Welfare.

[24]  V. Baumans,et al.  Preferences of mice and rats for types of bedding material , 1996, Laboratory animals.

[25]  J. Slangen,et al.  Plasma catecholamine and corticosterone responses to predictable and unpredictable noise stress in rats , 1989, Physiology & Behavior.