Effects of Cyclic High Ambient Temperature on Muscle Imidazole Dipeptide Content in Broiler Chickens

DOI Web Site 参考文献43件
  • Katafuchi Ayumi
    Graduate School of Agriculture, Forestry and Fisheries, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan
  • Kamegawa Mizuki
    Graduate School of Agriculture, Forestry and Fisheries, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan
  • Goto Serina
    Department of Agricultural Sciences and Natural Resources, Kagoshima University, Korimoto, Kagoshima 890-0065, Japan
  • Kuwahara Daichi
    Biotechnology Group, Innovation Technology Center, Central Technical Research Laboratory, ENEOS Corporation, Chidori-Cho 8, Naka-ku, Yokohama 231-0815, Japan
  • Osawa Yukiko
    Biotechnology Group, Innovation Technology Center, Central Technical Research Laboratory, ENEOS Corporation, Chidori-Cho 8, Naka-ku, Yokohama 231-0815, Japan
  • Shimamoto Saki
    Graduate School of Science and Technology, Niigata University, 8050 Ikarashi 2-no-cho, Nishi-ku, Niigata 950-2181, Japan
  • Ishihara Shinya
    Graduate School of Applied Life Science, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo 180-8602, Japan
  • Ohtsuka Akira
    Graduate School of Agriculture, Forestry and Fisheries, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan Department of Agricultural Sciences and Natural Resources, Kagoshima University, Korimoto, Kagoshima 890-0065, Japan
  • Ijiri Daichi
    Graduate School of Agriculture, Forestry and Fisheries, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan Department of Agricultural Sciences and Natural Resources, Kagoshima University, Korimoto, Kagoshima 890-0065, Japan

抄録

<p>Imidazole dipeptides possess important bioregulatory properties in animals. This study aimed to evaluate the effect of high ambient temperature on muscle imidazole dipeptides (carnosine, anserine, and balenine) in broiler chickens. Sixteen 14-day-old male broiler chickens were divided into two groups, which were reared under thermoneutral (25 ± 1 °C) or cyclic high ambient temperature (35 ± 1 °C for 8 h/day) for 4 weeks. Chickens exposed to cyclic high ambient temperatures displayed lower skeletal muscle anserine and carnosine content than control chickens. Balenine could not be detected in the pectoral muscle of either group. The pectoral muscles of broiler chickens kept under cyclic high-temperature exhibited significantly lower mRNA expression of carnosine synthase 1, which synthesizes carnosine and anserine; but a significantly higher mRNA expression of carnosinase 2, which degrades carnosine and anserine. Our results suggest that heat exposure decreases pectoral imidazole dipeptide content in broiler chickens. This may be attributed to a lower expression of imidazole dipeptide-synthesizing genes, but higher levels of genes involved in their degradation.</p>

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