| 不同蛋白质水平条件下氨基酸平衡日粮对生长猪氮、磷及能量代谢的影响 |
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| 引用本文： | 梁福广,何欣,马秋刚,宋春玲,计成.不同蛋白质水平条件下氨基酸平衡日粮对生长猪氮、磷及能量代谢的影响[J].中国畜牧杂志,2006,42(13):23-26. |
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| 作者姓名： | 梁福广 何欣 马秋刚 宋春玲 计成 |
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| 作者单位： | 1. 中国农业大学动物科技学院,北京,100094
2. 北京农学院动物科学系,北京,102206 |
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| 摘 要： | 选用平均体重为(40±2)kg杜长大三元杂交去势公猪3头,按3×3的拉丁方进行试验设计,试验分3期,每期为7 d,采用全收粪法,研究不同蛋白质(CP)水平的氨基酸平衡日粮CP水平分别为14%、16%和18%)对氮、磷及能量代谢的影响。结果表明:不同蛋白质水平日粮处理间的氮表观消化率差异不显(著P>0.05),氮的沉积率以14%CP和16%CP组显著高于18%CP组(P<0.05),而14%CP和16%CP组之间无显著差异(P>0.05)。粪氮排出量14%CP日粮组显著低于16%CP和18%CP日粮组(P<0.05),16%CP日粮组和18%CP日粮组间无显著差异(P>0.05)。随着日粮蛋白质水平下降,生长猪的氮排出量、粪氮和尿氮均减少,总排泄氮中尿氮的比例较大,而粪氮则较少。不同蛋白质水平日粮对磷和能量的消化利用无显著影响(P>0.05)。
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| 关 键 词： | 畜牧学 蛋白质水平 氮 磷 能量代谢 生长猪 |
| 文章编号： | 0258-7033(2006)13-0023-04 |
| 收稿时间： | 2005-07-15 |
| 修稿时间： | 2005-12-23 |
Effect of Different Dietary Protein Level on Metabolism of Nitrogen, Phosphorus and Energy in Growing Pigs Fed Amino Acid Balance Diets |
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| LIANG Fu-guang,HE Xin,MA Qiu-gang,SONG Chun-ling,JI Cheng.Effect of Different Dietary Protein Level on Metabolism of Nitrogen, Phosphorus and Energy in Growing Pigs Fed Amino Acid Balance Diets[J].Chinese Journal of Animal Science,2006,42(13):23-26. |
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| Authors: | LIANG Fu-guang HE Xin MA Qiu-gang SONG Chun-ling JI Cheng |
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| Abstract: | Three growing crossbred castrated male pigsaverage initial BW(40±2)kg] were used in a three-week experiment to evaluate the response to three amino acid balance diets with three CP levels(14%,16%,18%),A 3×3 latin-square arrangement of treatments was employed using a corn-soybean meal diet,nutrients digestibility of nitrogen,phosphorus,and retention of nitrogen,calcium,phosphorus,energy were examined.It was found that urine and fecal N excretion were decreased and the difference of nitrogen digestibility and retention between 14%CP and 18%,16% CP and 18%CP diets were significant(P < 0.05).There was no significant difference between 14%CP and 16%CP in nitrogen digestibility and retention(P > 0.05).There is significant difference among three diets in fecal N excretion,urine N excretion and total N excretion.As dietary CP level decreased,fecal N excretion,urine N excretion and total N excretion decreased.However,there were no significant differences for phosphorus and energy in digestibility and retention among three diets. |
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| Keywords: | animal science protein content nitrogen phosphorus energy metabolism growing pig |
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