Eosinophilia, increased serum cholesterol and lipids, increased adrenal weights in rodents, reduced fertility in rodents, and increased blood pressure in nonhuman primates are effects which have been documented. Some responses to noise are genetically determined. The DBA inbred mouse strain is prone to audiogenic seizures especially when exposed to loud, high-pitched sounds. Deafness has a genetic basis in some dogs and cats, e.g., the Dalmatian and white cats with blue eyes. Animal models such as these can be used to study a particular trait or defect.
Sound exposure has different effects on different animals.
Noise produced by animals and animal care activities is inherent in animal facilities. It is important, however, to minimize the production of unnecessary noise. The facility environment has been designed to reduce the noise exposure. For example, noisy animals such as dogs and swine are housed away from quieter animals. DLAR personnel try to minimize noise exposure when cleaning, feeding and caring for animals.