杂交构树适宜收割高度与青贮加工工艺参数研究

doi:10.12160/j.issn.1672-5190.2023.05.006

摘要/Abstract

摘要：

[目的]确定杂交构树的适宜收割高度以及利用微生物菌种发酵加工构树青贮的工艺参数。[方法]通过分析不同生长高度构树的营养成分和生物产量确定适宜的收割高度；选用植物乳杆菌、乳酸片球菌、布氏乳杆菌作为发酵菌种，以适宜生长高度的构树为原料制作构树青贮；采用正交试验设计优化菌种组合、糖蜜添加量、纤维素酶添加量、青贮时间等加工参数，以现场感官指标、化学成分指标、有氧稳定性指标以及营养成分指标作为判定青贮质量的依据，确定最优的构树青贮加工工艺参数组合。[结果]构树收割高度为1.2 m时，其生物产量和营养价值最高；经正交试验设计优化得到的构树青贮最佳工艺参数：菌种组合植物乳杆菌∶乳酸片球菌∶布氏乳杆菌比例为4∶1∶1，糖蜜添加量为3%，纤维素酶添加量为9×10³ U/kg、青贮时间60 d。[结论]研究确定了杂交构树的适宜收割高度及青贮加工工艺参数，为构树饲料化利用提供了参考。

关键词: 杂交构树, 收割高度, 青贮饲料, 工艺参数

Abstract:

[Objective] The purpose of this study was to determine the optimal harvesting height for hybrid Broussonetia papyrifera and the processing parameters for preparation of hybrid Broussonetia papyrifera silage fermented with microbial agents. [Method] The optimal harvesting height was determined by analyzing the nutritional component and biological yield of hybrid Broussonetia papyrifera at different growth heights. Using hybrid Broussonetia papyrifera at the optimal growth height as raw materials, and Lactobacillus plantarum, Pediococcus acidilactici, and Lactobacillus buchneri as fermentative strains, the silage processing parameters such as combinative ratio of bacterial strains, molasses addition amount, cellulase addition amount, and fermentation duration were screened by orthogonal experimental design. The optimal combination of processing parameters for preparation of hybrid Broussonetia papyrifera silage were determined based on indicators of sensory evaluation, chemical composition, aerobic stability, and nutritional component. [Result] The highest biological yield and nutritional value of hybrid Broussonetia papyrifera were obtained when harvested at the height of 1.2 meters. The optimal processing parameters for preparation of hybrid Broussonetia papyrifera silage obtained through orthogonal experimental design were as follows: the ratio of Lactobacillus plantarum, Pediococcus acidilactici, and Lactobacillus buchneri was 4∶1∶1, the molasses addition amount was 3%, the cellulase addition amount was 9×10³ U/kg, and the silage duration was 60 d. [Conclusion] This study determines the optimal harvesting height and the processing parameters for preparation of hybrid Broussonetia papyrifera silage, providing references for the feed utilization of Broussonetia papyrifera.

Key words: hybrid Broussonetia papyrifera, harvesting height, silage, processing parameter

中图分类号:

S816.53

宫斌, 李帅宏, 范彩云, 武欣燕, 王典, 兰儒冰, 陆兴伟, 卓钊, 王菊花, 程建波. 杂交构树适宜收割高度与青贮加工工艺参数研究[J]. 畜牧与饲料科学, 2023, 44(5): 39-47.

GONG Bin, LI Shuaihong, FAN Caiyun, WU Xinyan, WANG Dian, LAN Rubing, LU Xingwei, ZHUO Zhao, WANG Juhua, CHENG Jianbo. Determination of Optimal Harvesting Height and Silage Processing Parameters of Hybrid Broussonetia papyrifera[J]. Animal Husbandry and Feed Science, 2023, 44(5): 39-47.

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