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当前位置: 首页 > 文章 > 柑橘渣自然发酵过程中pH及营养物质含量的变化规律研究 中国饲料 2019 (7) 79-81
Position: Home > Articles > Dynamic changes of pH and nutrients content of citrus pulp during natural fermentation China Feed 2019 (7) 79-81

柑橘渣自然发酵过程中pH及营养物质含量的变化规律研究

作  者：
姚焰础;江山;肖融;黄健;宋凡;宋刚
单  位：
重庆市畜牧科学院;农业部养猪科学重点实验室;养猪科学重庆市市级重点实验室
关键词：
柑橘渣;自然发酵;pH;营养物质;变化规律
摘  要：
为研究柑橘渣在自然发酵过程中pH和营养物质含量的动态变化规律,本试验将新鲜柑橘渣密封后自然厌氧发酵,分别在第0、7、14、21、28、56天采集样品,测定pH和营养物质含量。试验结果表明:柑橘渣自然发酵7 d内pH迅速下降,粗蛋白质、粗灰分、钙、磷含量分别提高58.18%、52.38%、57.45%、30.00%,然后保持相对稳定;14 d内干物质、中性洗涤纤维和酸性洗涤纤维含量保持稳定,14 d后逐渐下降,发酵56 d较发酵前分别降低9.20%、19.33%、13.02%。试验结果提示,柑橘渣自然发酵能降低pH和纤维含量,提高营养物质含量,但由于蛋白质和干物质含量低,因此需要与其他低水分、高蛋白质的饲料进行混合发酵,以提高其饲用价值。
译  名：
Dynamic changes of pH and nutrients content of citrus pulp during natural fermentation
作  者：
YAO Yanchu;JIANG Shan;XIAO Rong;HUANG Jian;SONG Fan;SONG Gang;Chongqing Academy of Animal Sciences;Key Laboratory of Pig Industry Sciences of Agriculture Ministry;Chongqing Key Laboratory of Pig Industry Sciences;
关键词：
citrus pulp;;natural fermentation;;pH;;nutrients;;dynamic changes
摘  要：
In order to study the dynamic changes of pH and nutrients content of citrus pulp during natural fermentation,the fresh citrus pulp was sealed and fermented in large silage bag.Samples of fermented citrus pulp were collected in 0,7,14,21,28,56 d respectively,the pH and the content of nutrients were determined.The results showed that the pH decreased rapidly in 7 days,and the content of crude protein,ash,calcium and phosphorus increased by 58.18%,52.38%,57.45%,30.00%,respectively,and then remained relatively stable.The content of dry matter,neutral detergent fiber and acid detergent fiber remained stable in 14 days,and then decreased gradually.During 56 days fermentation they decreased by 9.20%,19.33% and 13.02% respectively.The results suggested that natural fermentation of citrus pulp could reduce pH and fiber content,increase nutrients content,but because of the low content of protein and dry matter,it needed to be mixed with other low moisture and high protein feed in order to improve its feeding value.

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