Effect of corn flour on the quality of Urtica cannabinasilage

doi:10.11686/cyxb20150123

Abstract

Abstract: To investigate the effect of corn flour (CF) on the nutritive value ensiled Urtica cannabina or hempleaf nettle (HN),CF was added to fresh HN using a 1∶5 mixture (CF∶HN) silage. Dry matter (DM) was adjusted to approximately 310 g/kg. Silage without CF was used as a control. Silage was packed in plastic bags; each treatment had 18 replicates. The fermentative quality, nutrient component and in vitro digestibility of silages were assessed after 60 days of ensiling at ambient temperature. The pH, NH₃-N and organic acids of silages were measured after 0, 3, 5, 15, 20, and 60 days. The results revealed that CF treatment significantly (P<0.001) accelerated silage fermentation by reducing pH and increasing lactic acid concentration. In the first 15 days of fermentation, the silages with CF treatment tended to have a faster rate of pH decline and lactic acid accumulation than the silage without CF treatment. This study also showed that the CF treatment silage had significantly lower (P<0.05) pH, NH₃-N, acetic and butyric acids, neutral detergent fiber (NDF) and acid detergent fiber (ADF) than silages without CF treatment after 60 days of ensiling. In contrast, CF treated silages contained significantly higher (P<0.05) lactic acid, water-soluble carbohydrate (WSC) and Flieg point values, as well as higher in vitro digestibility of DM, NDF and ADF. There was no difference in crude fat between the CF treatment and the control treatment. In conclusion, CF improved the nutritive value of HN silage, potentially increasing utilization by livestock.

ZHANG Xiaoqing, JIN Yanmei, LI Fadi, WANG Yuqing, LI Peng. Effect of corn flour on the quality of Urtica cannabinasilage[J]. Acta Prataculturae Sinica, 2015, 24(1): 190-195.

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