SHORT COMMUNICATION
Effects of Cryptomeria japonica bark on circadian
variations in lymphocytes and neutrophils in sheep
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Laboratory of Animal Nutrition and Physiology,
Department of Agro-bioscience, Iwate University,
3-18-8 Ueda, Morioka 020-8550, Japan
Publication date: 2004-08-30
Corresponding author
S. Oda
Laboratory of Animal Nutrition and Physiology,
Department of Agro-bioscience, Iwate University,
3-18-8 Ueda, Morioka 020-8550, Japan
J. Anim. Feed Sci. 2004;13(Suppl. 1):605-608
KEYWORDS
ABSTRACT
The effect of bark from Cryptomeria japonica trees on circadian variations in lymphocyte
and neutrophil counts in sheep was studied. Hay supplemented with bark caused decreased
leukocyte counts in peripheral blood compared with hay alone. Percentages of lymphocytes were
slightly increased, and neutrophils were slightly decreased compared to controls. Plasma NEFA
concentrations with bark and hay were also lower than those with hay alone. These results suggest
that feed supplemented with bark may increase parasympathetic activity in sheep.