Effect of Substituting Corn with Cobs Treated with Combinations of Urea and Wood Ash on Chemical Composition and Gas Production Substrate

Hayvan Bilimi ve Ürünleri Dergisi Pub Date : 2021-06-11 DOI:10.51970/jasp.914984

A. Abdulazeez, O. Madibela, C. Tsopi̇to

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Abstract

Effect of substituting corn with cobs treated with urea (25%) and wood ash (75%) on chemical composition and gas production substrate was determined. Corn was substituted with graded levels of treated cobs in the dietary ingredients and the treatments were: 100C = 100% corn, 66C34TC = 66% corn with 34% treated cobs, 34C66TC = 34% corn with 66% treated cobs and 100TC = 100% treated cobs. Samples were analyzed for dry matter (DM), organic matter (OM), ash, crude protein (CP), neutral detergent fibre (NDF), acid detergent fibre (ADF) and acid detergent lignin (ADL); they were then incubated in vitro for 6, 12, 24, 48 and 72 hrs. Results indicated that as corn is substituted with treated cobs, NDF, ADF and ADL also increased, however only the NDS for treatment 100C was reduced. The result of the truly degraded substrate (TDS) parameters also indicated that treatment 34C66TC had the highest TDS, gas production (GP), microbial mass production (MMP), efficiency of microbial mass production (EMMP) and partitioning factor (PF). In conclusion, 66% of treated cobs could replace corn in a complete diet without effects on measured parameters.

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尿素与木灰复合处理玉米芯对玉米化学成分及产气基质的影响

测定了尿素(25%)和木灰(75%)处理玉米芯对玉米化学成分和产气基质的影响。用不同处理水平的玉米替代饲粮成分中的玉米，处理为:100C = 100%玉米，66C34TC = 66%玉米+ 34%处理玉米芯，34C66TC = 34%玉米+ 66%处理玉米芯，100TC = 100%处理玉米芯。分析样品的干物质(DM)、有机物(OM)、灰分、粗蛋白质(CP)、中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)和酸性洗涤木质素(ADL);分别体外培养6、12、24、48、72小时。结果表明，用处理过的玉米棒替代玉米，NDF、ADF和ADL均有所增加，而100C处理只降低了NDS。真正降解底物(TDS)参数测定结果也表明，处理34C66TC具有最高的TDS、产气量(GP)、微生物量产(MMP)、微生物量产效率(EMMP)和分配因子(PF)。综上所述，66%处理过的玉米棒可以替代全饲粮中的玉米，而不影响测量参数。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Hayvan Bilimi ve Ürünleri Dergisi

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