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【答案】应助回帖
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wrathqust: 金币+5, 翻译EPI+1, ★★★★★最佳答案 2014-01-03 10:03:44
The aim of this experiment was to study the effects of cereals and cereal by-products supplemented with non-starch polysaccharides (NSP) enzyme on nutrient utilization rates of meat ducks. A total of 56 healthy adult male meat Ma ducks with the body weight about 2.0 kg were randomly divided into 7 groups and 8 replicates in each group. Metabolic test was carried out by 'hunger strike-gavage method' to determine apparent and true utilization rates of dry matter (DM), crude protein (CP), ether extract (EE) and crude fiber (CF) of 14 kinds of cereals and cereal by-products before and after adding NSP enzyme. The results showed that most of the 14 kinds of cereals and cereal by-products adding with NSP enzyme could improve the apparent and true utilization rates of DM, CP, EE and CF. Among them, the apparent utilization rates of DM, CP, EE and CF of corn were increased by 6.69% (P<0.01), 24.73% (P<0.05), 7.40% (P>0.05) and 9.95% (P<0.05), respectively; the apparent utilization rates of CP and CF of rice bran were increased by 14.20% and 4.55% (P>0.05), respectively; the apparent utilization rates of EE and CF of DDGS were increased by 12.57% and 4.99% (P>0.05), respectively; the apparent utilization rates of DM and CP of secondary flour were increased by 1.26% and 13.87% (P>0.05), respectively. NSP enzyme addition could make most of the cereals and cereal by-products release additional effective nutrients.
The effective nutrient improvement value (ENIV) range
of DM was 0.09 to 46.92 g/kg, the ENIV range of CP was 0.49 to 9.55 g/kg, the ENIV range of EE was 0.13 to 8.85 g/kg and the ENIV range of CF was 0.31 to 7.78 g/kg. The results indicate that cereals and cereal by-products adding with NSP enzyme can improve the nutrient utilization rates of meat ducks in different extent.
有效营养改进值(effective nutrient improvement value,ENIV)为加酶后与加酶前的表观可利用养分值之差
根据7楼的 （还有另外一种考虑，就是指某改进仅限于单一变量，而不是改进多个。）
认为译为单（一）变量改进值∆RW，与原文更符合。为何用改进不用增加，实际应为变化，不一定是增加，减少也是可能的。物理学中improvement value 也有这种用法的！ |
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