J. Anim Sci.
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J. Anim Sci. 1975. 41:654-658.
© 1975 American Society of Animal Science
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Digestive Responses of Sheep to Auditory Stimuli1

L. H. Harbers, D. R. Ames, A. B. Davis and M. B. Ahmed2

Kansas State University, Manhattan 66506

Abstract

Metabolism and rumen motility studies were conducted using yearling wethers subjected to three types of noise (at 75 and 100-dB intensities): United States of America Standard Institute (USASI) white noise; instrumental music and intermittent miscellaneous sounds (IMS). Animals ate less (P<.05) when subjected to auditory stimuli that exceeded background noise (48 dB). IMS at 75 and 100 dM increased water intake (P<.05) and metabolizable energy of the ration (P<.01) and improved apparent nutrient digestibilities (P<.03). Nitrogen retention was not affected by sound intensity or type. Level (P<.02), type (P<.05), and their interaction (P<.01) affected urinary creatinine output. After the sheep were exposed to auditory stimuli 15 min, their rumen motility was not altered.

Footnotes

1 Contribution No. 485, Department of Animal Science and Industry, Kansas Agricultural Experiment Station.

2 Present address: North East College of Arts and Science, Maidugari, Nigeria.






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