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Title: Development of a microbial silage inoculant
Author: Cunningham, Michelle
Awarding Body: University of Edinburgh
Current Institution: University of Edinburgh
Date of Award: 1990
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The use of silage additives can improve the reliability of the ensilage process. The fact that chemical additives are both highly corrosive to expensive farm machinery and hazardous to handle has prompted the development of alternative silage additives. Bacterial inoculants were developed to provide a source of homofermentative lactic acid bacteria. The objective of this study was to develop a bacterial silage inoculant that would improve the efficiency of ensilage of a crop. An inoculant termed SilCare II was developed. SilCare II, comprising a ratio of three L.plantarum L71 cells to every one P.pentosaceus P826, was always applied in the presence of molasses at the rate of 9 ml kg-1 herbage. The freeze-drying of SilCare II in the presence of rehydrated skimmed milk was found to be the most successful protectant for preserving the cultures, both during the freeze-drying process and over a long storage period. Freeze-dried SilCare II preserved herbage more successfully than a commercially available inoculant, Lactomol, or an untreated control. Improvements in the efficiency of the ensilage process were achieved by increasing the application rate of the inoculant to the herbage. However, large scale ensilage experiments indicated that the inoculant had little effect on the fermentation of herbage in bunker silos. Animals trials using grey-faced wether lambs indicated that SilCare II did not significantly improve the nutritional quality of the silage.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available