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EFFECTS OF ALTERNATING 6-HOUR LIGHT/DARK CYCLES ON THE RUMINATING BEHAVIOR OF FASTED GOATS

  • Oshiro, S. (College of Agriculture, University of the Ryukyus) ;
  • Nakamae, H. (College of Agriculture, University of the Ryukyus) ;
  • Furuta, K. (College of Agriculture, University of the Ryukyus) ;
  • Hirakawa, M. (College of Agriculture, University of the Ryukyus) ;
  • Higoshi, H. (College of Agriculture, University of the Ryukyus)
  • Received : 1995.08.02
  • Accepted : 1995.11.08
  • Published : 1996.06.01

Abstract

Experiments were conducted to study the effects of a dark (06:00-12:00), light (12:00-18:00), dark (18:00-24:00), and light (00:00-06:00) cycle on the ruminating behavior of five fasting female goats. Rumination time and number of boli were not different in the dark and light periods of the fed state or in the second and third days of fasting. Ruminating time and number of boli increased in the dark (06:00-12:00) period compared to the light (12:00-18:00) period during the first day of fasting. Ruminating time was higher after the first day of fasting than the fed state, and decreased substantially after the first day of fasting than the fed state, and decreased substantially after the second and third days of fasting compared to the fed state or the first day of fasting. Number of boli/day was not different among the fed state, the second and third days of fasting but was higher after the first day fasting compared to the fed state.

Keywords

Dark;Light;Ruminating;Feeding;Fasting;Boli