Effects of supplementation with calcium salts of medium-chain fatty acids on the plasma metabolic hormone concentrations in weaning beef calves

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  • MASUDA Yoji
    University Farm, Department of Agriculture, Utsunomiya University United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology Marubeni Nisshin Feed Co., Ltd
  • FUKUMORI Rika
    University Farm, Department of Agriculture, Utsunomiya University United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology School of Veterinary Medicine, Rakuno Gakuen University
  • YANAI Rina
    University Farm, Department of Agriculture, Utsunomiya University
  • TAKEUCHI Ayaka
    University Farm, Department of Agriculture, Utsunomiya University
  • SARENTONGLAGA Borjigin
    University Farm, Department of Agriculture, Utsunomiya University
  • SUGINO Toshihisa
    Graduate School of Biosphere Science, Hiroshima University
  • NAGAO Yoshikazu
    University Farm, Department of Agriculture, Utsunomiya University United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology

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Other Title
  • 肉用交雑種子ウシにおける離乳期の中鎖脂肪酸カルシウム給与が血中代謝性ホルモン濃度に及ぼす影響

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Abstract

<p>This study aimed to investigate the effects of feeding calcium salts of medium-chain fatty acids (MCFA-Ca) on the growth and metabolism of weaning beef calves. Sixteen Holstein-Japanese Black crossbred bull calves were assigned randomly to two dietary treatments (MCFA-Ca and control). All the calves were completely weaned at the age of 121 days. From 10 days before weaning (Day − 10) to 84 days after weaning (Day 84), the MCFA-Ca calves were fed with concentrate and supplement including MCFA-Ca (27g/day as MCFA-Ca), while the control calves were fed with concentrate and supplement without MCFA-Ca. Timothy hay was provided ad libitum. At Day − 10, 0, 13, 22, 50, and 84, the body weight was measured, and blood samples were withdrawn to analyze the plasma metabolite and hormone concentrations. The plasma insulin concentrations in the MCFA-Ca calves were significantly lower than those in the control calves after weaning. The plasma insulin-like growth factor-1 concentrations in the MCFA-Ca calves were significantly higher than those in the control calves. Our results suggest that feeding MCFA-Ca to weaning beef calves could change their metabolic hormone secretions.</p>

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