| 摘要: |
| 应用2个4×4拉丁方绵羊消化与氮平衡试验研究发现,随日粮精料水平的提高,绵羊氨化与未氨化麦秸日粮 NDF,ADF 表观消化率均下降,而 DM,OM,CP 表观消化率与 NR 均提高,当日粮精料比例从20%提高到60%时,2种日粮 ADF 表观消化率均没有显著下降(P>0.05),而 DM,OM,CP 表观消化率与 NR 均显著提高(P<0.01,P<0.05)。秸秆氨化提高了日粮 NDF,ADF,DM,OM,CP 表观消化率与 NR,提高日粮精料水平与秸秆氮化,均可提高日粮 DMI。 |
| 关键词: 日粮精料水平 秸秆氨化 消化率 氮存留 进食量 |
| DOI： |
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| 基金项目: |
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| EFFECTS OF DIETARY CONCENTRATE LEVEL AND STRAW AMMONIATION ON DIGESTION,NITROGEN RETENTION AND INTAKE OF DIETS BY SHEEP |
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| Abstract: |
| Two sheep digestion and nitrogen-balance trials(trial A and trial B) were conducted to determine the effect of feeding ammoniated wheat straw at increa- sing concentrate levels of diets on apparent digestibilities of neutral detergent fiber (NDF),acid detergent fiber(ADF),total dry matter(DM),organic matter(OM) and crude protein(CP),nitrogen retention(NR)and total dry matter intake(DMI). As the levels of concentrate increased in the diets the digestibilities of NDF and ADF were decreased,while the digestibi... |
| Key words: dietary concentrate level straw ammoniation digestibility nitrogen retention feed intake |
