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1989 Fiscal Year Final Research Report Summary

Studies on Regulation of Lipid Metabolism and Egg Production in Laying Hens.

Research Project

Project/Area Number 62480081
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 畜産化学
Research InstitutionGifu University

Principal Investigator

TANAKA Keiichi  Faculty of Agriculture, Gifu University., 農学部, 教授 (30021710)

Co-Investigator(Kenkyū-buntansha) OHTANI Shigeru  Faculty of Agriculture, Gifu University., 農学部, 助教授 (90115395)
Project Period (FY) 1987 – 1989
KeywordsLaying hen / Pantethine / Hepatic lipogenesis / Lipid accumulation / Lipogenic enzyme / Egg production / 17beta-estradiol / isolated hepatocyte
Research Abstract

1) Effects of dietary pantethine supplementation on egg production, hepatic lipogenesis and on lipid accumulation of the liver and the abdominal fat tissue were studied in Single Comb White Leghorn laying hens fed diets containing corn or barley as the carbohydrate source. Lipid content and lipogenic-related enzyme activities in the liver in hens fed the corn basal diet than in those fed the barley basal diet. Lipid contents of the liver and abdominal fat and hepatic lipogenesis were significantly reduced, when the corn. basal diet was supplemented with pantethine. However, pantethine supplementation to the barley basal diet failed to show any significant effect on the lipid content and lipogenesis of the liver. These effects of pantethine supplementation to the corn basal diet manifested itself via depression of the 170-estradiol level, which in turn decreased plasma triglyceride concentration and consequently resulted in reduced fatty acid transport from blood to adipose tissues.
2) Effects of dietary pantethine supplementation on egg production and on lipid accumulation and lipogenesis of the liver were studied laying hens fed diets with corn or barley, under 31゚C of environmental temperature. Pantethine added to experimental diets did not affect daily feed consumption, but improved egg production and egg weight. Thus, based on these results, we are inclined to conclude that the ability of pantethine supplementation to egg production rate and egg weight is evident only when the environmental temperature is high, but not when it is low.
(3)Effects of pantethine on hepatic lipogenesis were studied in vitro by isolated hepatocytes of hens. Lipogenesis of isolated hepatocytes decreased by pantethine addition to incubation medium. Especially, cholesterol biosynthesis showed a marked decrease by added pantethine.

  • Research Products

    (6 results)

All Other

All Publications (6 results)

  • [Publications] Jenn-Chung HSU,Keiichi TANAKA,Shigeru OHTANI and Cristino M.COLLADO: "Effects of Pantethine Supplementation to Diets with Different Energy Cereals on Hepatic Lipogeneses of Laying Hens" Poultry Science. 66. 280-288 (1987)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Jenn-Chung Hsu,Keiichi TANAKA,Shigeru OHTANI and Cristino M.COLLADO: "Effects of Pantethine Supplementation to Diets on Hepatic Lipogenesis of Laying Hens Exposed to a High Environmental Temperature" Japanese Journal of Zootechnical Science. 59. 1059-1072 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Keiichi TANAKA,Jenn-Chung HSU,and Shigeru OHTANI: "Effects of Dietary Pantethine on Plasma Lipid fractions and on Hepatic Lipogenesis of Growing Chicks" JapaneseJournal of Zootechnical Science. 60. 1151-1160 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Jenn-Chung HSU, Keiichi TANAKA, Shigeru OHTANI and Cristino M. collado: "Effects of Pantethine Supplementation to Diets with Different Energy Cereals on Hepatic Lipogenesis of Laying Hens" Poultry Science, 66, 280-288, 1987.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Jenn-Chung HSU, Keiichi TANAKA, Shigeru OHTANI and Cristino M. COLLADO: "Effects of Pantethine Supplementation to Diets on Hepatic Lipogenesis of Laying Hens Exposed to a High Environmental Temperature" Japanese Journal of Zootechnical Science, 59-12, 1059-1072, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Keiichi TANAKA, Jenn-Chung HSU, Shigeru OHTANI: "Effects of Pantethine Supplementation on Plasma Lipid Fractions and on Hepatic Lipogenesis of Growing Chicks." Japanese Journal of Zootechnical Science, 60-12, 1151-1160, 1989.

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1993-03-26  

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