Effect of Feeding a Reduced Protein, Amino Acid-Supplemented Diet on the Excretion of Urine and Nitrogen, and the Ammonia Emission from Slurry in Growing Pigs.

DOI JASI Web Site 21 Citations 17 References
  • YAMAMOTO Akemi
    Livestock Industry's Environmental Improvement Organization, Institute of Livestock Industry's Environmental Technology
  • TAKAHASHI Eiji
    Livestock Industry's Environmental Improvement Organization, Institute of Livestock Industry's Environmental Technology
  • FURUKAWA Chieko
    Livestock Industry's Environmental Improvement Organization, Institute of Livestock Industry's Environmental Technology
  • ITOH Minoru
    Livestock Industry's Environmental Improvement Organization, Institute of Livestock Industry's Environmental Technology
  • ISHIKAWA Yuji
    Fukushima Prefectural Livestock Experiment Station
  • YAMAUCHI Yoshihiko
    Fukushima Prefectural Agricultural Junior College
  • YAMADA Michi
    Fukushima Prefectural Agricultural Junior College
  • FURUYA Shu
    Livestock Industry's Environmental Improvement Organization, Institute of Livestock Industry's Environmental Technology

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Other Title
  • 肉豚へのアミノ酸添加低タンパク質飼料の給与による尿量，窒素排せつ量およびアンモニア発生量の低減効果
  • 肉豚へのアミノ酸添加低タンパク質飼料の給与による尿量,窒素排泄量およびアンモニア発生量の低減効果
  • ニク ブタ エ ノ アミノサン テンカ テイタンパクシツ シリョウ ノ キュウヨ ニ ヨル ニョウリョウ チッソ ハイセツリョウ オヨビ アンモニア ハッセイリョウ ノ テイゲン コウカ

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Abstract

An experiment was conducted to determine the effect of feeding reduced CP, amino acid-supplemented diet on the excretion of urine and nitrogen, and the ammonia emitted from urine and feces in growing pigs. Twelve pigs (35kg BW) were fed corn-soybean meal diets containing either 16.4% CP (standard CP diet) or 10.9% CP supplemented with amino acids (low CP diet) for 28d. After 8d of feeding of the diets, a 4-d nitrogen balance trial was conducted. Ammonia emitted from urine, feces and the mixture, in which feces were mixed with urine (ratio of 1:2, wt/wt) to form a slurry, was determined by an in vitro system on the feces and urine excreted, on the 28th d. Body weight gain, feed intake and feed efficiency were similar between the pigs fed the standard CP diet and pigs fed the low CP diet. Water intake and excretion of urine tended to be lowered by feeding the low CP diet. Feeding the low CP diet reduced the excretion of fecal nitrogen (P<0.10) and urinary nitrogen (P<0.01), and the total excretion of nitrogen in the urine and feces (P<0.05) by 28, 50 and 38%, respectively. Ammonia emitted from the mixture of urine and feces was reduced (P<0.01) by 64% in the pigs fed the low CP diet compared with pigs fed the standard CP diet. We conclude that reducing the CP content in diets reduces fecal and urinary nitrogen excretion and ammonia emission from the slurry of growing pigs.

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