Seasonal Effects of a Reduced Protein, Amino Acid-Supplemented Diet on Reduction of Urine and Nitrogen Excretion in Finishing Pigs

ONOUE Takeshi, TACHIBANA Fumio, SAMEGAI Yasuo, KOYAMA Futoshi, TESHIMA Nobutaka, YAMAGUCHI Shoichiro, ASADA Kenichi

doi:10.5938/youton.47.1

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Other Title

アミノ酸添加低タンパク質飼料の肥育豚への給与が季節別の尿量および窒素排せつ量に与える低減効果
アミノサンテンカテイタンパクシツシリョウノヒイクブタエノキュウヨガキセツベツノニョウリョウオヨビチッソハイセツリョウニアタエルテイゲンコウカ

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Abstract

These experiments were conducted to determine the seasonal effects of feeding finishing pigs a reduced crude protein (CP) diet on the excretion of urine and nitrogen. The experimental diets prepared were a standard CP diet (CP 14.5%) and a low CP, amino acid-supplemented diet (CP 11.5%). Three to 8 pigs (60kgBW) were fed these diets for 10 to 14 days. The experiments were conducted twice in winter and once in summer and autumn.<BR>In winter, the low CP diets reduced water intake and urine excretion by 17% and 25%, respectively. In summer, there was no difference in water intake and urine excretion, however the nitrogen content ratio in urine tended to decrease with a low CP diet. Although there was no difference in fecal nitrogen excretion,the low CP diets reduced urine nitrogen excretion and total nitrogen excretion by 30.5 to 40.1% and 18.6 to 24.9% in all seasons. Reduction in dietary CP had only a slight impact on DG, GF, feed conversion ratio, feces excretion, and moisture contents.

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Nihon Yoton Gakkaishi

Nihon Yoton Gakkaishi 47 (1), 1-7, 2010

The Japanese Society of Swine Science

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