Effect of ensiling wheat straw with molasses, lucerne and bacterial culture on fermentation pattern and chemical changes

Singh, K.; Zimmer, E.; Honig, H.

Indian Journal of Animal Sciences 63(2): 167-173

1993


ISSN/ISBN: 0367-8318
Accession: 002355377

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Abstract
Three mixtures in 8 replicates of wheat straw with bacterial culture (T-1), culture + CaCO-3 (T-2) and lucerne (1:4) (T-3) having 3 levels of water soluble carbohydrates (WSC) (1, 2 and 3%) were ensiled in laboratory glass silos. The silos were opened in duplicate at 10, 35, 60 and 90 days of ensiling. All the silages in treatment T-3 had very good odour and texture while silages at all days of unloading in T-2 had foul odour and some silages in treatment T-1 had foul odour at day 10. Addition of bacterial culture increased the intensity of fermentation and at day 10 almost all the WSC was used. In spite of similar lactic acid production in all the treatments at day 10, in treatments T-1 and T-2, lower values of lactic acid, higher butyric acid, higher ammonia-N, reversal of pH and very low values of Flieg index were observed after day 10 till final unloading at day 90 due to secondary fermentation. The silages in treatment T-3 had desirable fermentation. To contents of ADF, hemicellulose and lignin were not affected while the production of acids during fermentation partly solubilized hemicellulose and increased the cell contents. The dry matter and digestible organic matter losses were significantly lower in T-3. The production of more acids than the quantity of WSC during ensiling was as a result of hydrolysis of hemicellulose. The magnitude of these chemical changes was more pronounced in treatment T-3. The silages in treatment T-3 were aerobically stable at all days of unloading than T-1 and T-2. It may thus be inferred that wheat straw can be successfully ensiled with lucerne in a ratio of 1.:4 with 3% WSC level.