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首页> 外文会议>The 3rd Asian-Australasian dairy goat conference >The effects of dietary crude protein levels on nutrient digestibility,nitrogent retention, rumen environment and microbial nitrogen synthesis of growing female Bach Thao goats in Vietnam
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The effects of dietary crude protein levels on nutrient digestibility,nitrogent retention, rumen environment and microbial nitrogen synthesis of growing female Bach Thao goats in Vietnam

机译：日粮粗蛋白水平对越南成年雌巴赫邵山羊的营养消化率，硝态氮保留，瘤胃环境和微生物氮合成的影响

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摘要

An experiment was carried out to evaluate the effects of crude protein (CP) contents on feedrnintake, nutrient digestibility, rumen parameters and estimated nitrogen synthesis of Bach Thaorngoats. Fivefemale goats from 4-5 months of age (16.7 ± 0.92 kg) were used for thisrnexperiment in a Latin square design. Fivetreatments were applied, containing dietary CPrncontents of 5.0, 5.5, 6.0, 6.5 or 7.0g/kgLW/day. The results showed thatdry matter (DM),rnNeutral detergent fiber (NDF) and acid detergent fiber (ADF) intakes and digestibilitieswerernnot significantly differentamong the treatments (P>0.05), and the rumen parameters were alsornsimilar in different treatments. However, the nitrogen retention was significantly differentrn(P<0.05) among the treatments and it was higher for the treatments of 6.0, 6.5 andrn7.0gCP/kgLW. The purine derivatives and estimated microbial nitrogen synthesis werernnumerically higher for the treatments containing 6.0, 6.5 and 7.0gCP/kgLW. Although therernwas a gradual increase of daily weight gain by increasing the amount of dietary CP from5.0 torn7.0gCP, no significant difference was found.Based on the results,the dietary CP from 6.0 torn6.5g/kgLW for growing Bach Thao goats is recommended.
机译：进行了一项实验，以评估粗蛋白（CP）含量对巴赫Thaorngoats摄食，养分消化率，瘤胃参数和估计氮合成的影响。在拉丁方设计中，将4-5个月大的五只雌性山羊（16.7±0.92千克）用于该实验。进行了五种处理，其中饮食CPrn含量为5.0、5.5、6.0、6.5或7.0g / kgLW /天。结果表明，干物质（DM），中性洗涤剂纤维（NDF）和酸性洗涤剂纤维（ADF）的摄入量和消化率在处理之间没有显着差异（P> 0.05），而且瘤胃参数在不同处理下也相似。然而，氮素截留率在各处理之间有显着差异（P <0.05），在6.0、6.5和7.0gCP / kgLW的处理下较高。对于含6.0、6.5和7.0gCP / kgLW的处理，嘌呤衍生物和估计的微生物氮合成在数值上更高。尽管日粮中CP从5.0增​​加到7.0gCP逐渐增加了日增重，但没有显着差异。基于结果，生长的巴赫邵山羊日粮中CP从6.0减少到6.5g / kgLW。推荐的。

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