Effects of Water Content, Lactic Acid Bacteria and Sucrose on Alfalfa Silage Quality
Author(s): WU Cai-xia, TANG Qian, HAN Zhi-sen, ZHAO Guo-qi
Pages: 22-26
Year: 2015 Issue: 18
Journal: China Dairy Cattle
Keyword: Alfalfa; Orthogonal design; Moisture; Sucrose; Lactic acid bacteria; Silage quality;
Abstract: Alfalfa was harvested at early lfowering stage. After 0, 4 and 8 h of exposure to the sun, the water content of alfalfa, lactic acid bacteria and sugar were arranged in an Orthogonal Design to evaluate the effect of these 3 factors on alfalfa silage quality. The results showed that after 4 and 8 h of exposure to the sun, the water content of alfalfal was decreased from 80.82% to 72.54% and 68.63%, respectively. The value of pH and Ammonia-N/TN of the alfalfa silage was not significantly affected by the water content (P>0.05). In the treatments of water content of 72.54% and 68.63%, lactic acid (LA) content of alfalfa silage was signiifcantly higher than the treatment of water content of 80.82%(P<0.05). In addition, crude protein (CP) and dry matter (DM) of alfalaf silage of the treatments of water content of 72.54% and 68.63% were signiifcantly increased than the treatment of water content of 80.82% (P<0.05), but NDF and ADF were signiifcantly decreased (P<0.05). At addition level of 107cfu/g of lactic acid bacteria, alfalfa silage had the highest DM, CP and LA content, but the lowest NDF, ADF and AN/TN, which all showed signiifcant differences with the treatments of lactic acid bacteria addition level of 105 and 106cfu/g (P<0.05). At the sucrose addition of 20g/kg, alfalfa silage had the highest LA content, and had lowest pH value, NDF and ADF content, that all showed signiifcant differences with the treatment of 0g/kg of sucrose addition level (P<0.05). These results indicated that alfalfa at the water content of 68.63%, added 107cfu/g lactic acid bacteria and 20g/kg sucrose had the best silage quality.
Pages: 22-26
Year: 2015 Issue: 18
Journal: China Dairy Cattle
Keyword: Alfalfa; Orthogonal design; Moisture; Sucrose; Lactic acid bacteria; Silage quality;
Abstract: Alfalfa was harvested at early lfowering stage. After 0, 4 and 8 h of exposure to the sun, the water content of alfalfa, lactic acid bacteria and sugar were arranged in an Orthogonal Design to evaluate the effect of these 3 factors on alfalfa silage quality. The results showed that after 4 and 8 h of exposure to the sun, the water content of alfalfal was decreased from 80.82% to 72.54% and 68.63%, respectively. The value of pH and Ammonia-N/TN of the alfalfa silage was not significantly affected by the water content (P>0.05). In the treatments of water content of 72.54% and 68.63%, lactic acid (LA) content of alfalfa silage was signiifcantly higher than the treatment of water content of 80.82%(P<0.05). In addition, crude protein (CP) and dry matter (DM) of alfalaf silage of the treatments of water content of 72.54% and 68.63% were signiifcantly increased than the treatment of water content of 80.82% (P<0.05), but NDF and ADF were signiifcantly decreased (P<0.05). At addition level of 107cfu/g of lactic acid bacteria, alfalfa silage had the highest DM, CP and LA content, but the lowest NDF, ADF and AN/TN, which all showed signiifcant differences with the treatments of lactic acid bacteria addition level of 105 and 106cfu/g (P<0.05). At the sucrose addition of 20g/kg, alfalfa silage had the highest LA content, and had lowest pH value, NDF and ADF content, that all showed signiifcant differences with the treatment of 0g/kg of sucrose addition level (P<0.05). These results indicated that alfalfa at the water content of 68.63%, added 107cfu/g lactic acid bacteria and 20g/kg sucrose had the best silage quality.
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