Effects of different additives on the quality of double low rapeseed straw silage

doi:10.14088/j.cnki.issn0439-8114.2025.07.023

Abstract

Abstract: To investigate the effects of different additives on the quality of double low rapeseed straw silage after fermentation, whole plant double-low high quality rapeseed straw after maturity and seed removal was used as raw material in the experiment,with seven treatments set up: control(CK), silage species + 600 g/t enzymic preparations, silage species + 300 g/t enzymic preparations, silage species + 150 g/t enzymic preparations, silage species+150 g/t enzymic preparations + 3% urea, silage species + 150 g/t enzymic preparations + 4% urea, and silage species+150 g/t enzymic preparations + 5% urea. Samples from each treatment group were taken for detection and analysis after 45 days of fermentation. Then 15 healthy Yichang white goats of appropriate age were selected and randomly divided into five groups with 3 goats in each group. Then, the best quality tested group of rapeseed straw silage was mixed with corn silage at ratios of 10%, 20%, 30%, 40%, and 50% respectively and fed to five groups of goats to observe their feeding situation. The results showed that the organic acid content of rapeseed straw decreased significantly (P<0.05), and the contents of crude protein and crude fat increased significantly (P<0.05) after adding a certain amount of silage bacteria and enzyme preparations, among which the quality of the silage bacteria + 150 g/t enzyme preparation treatment group was the best. The content of butyric acid decreased significantly (P<0.05) and the content of crude protein increased significantly (P<0.05) after urea ammonification of rapeseed straw. The feed intake of white goats was higher after feeding the mixture of rapeseed straw silage and corn silage. It indicated that inoculating silage bacteria to rapeseed straw and adding enzyme preparations and urea for fermentation could effectively improve the nutritional components and the quality of rapeseed straw silage, and the palatability, and promote the feeding of livestock.

Key words: rapeseed （Brassica napus L.） straw, straw silage, silage bacteria, enzyme preparation, urea

CLC Number:

S816.5

PENG Zheng-wen, TONG Yue, JIANG Xian-yu, ZHANG Hong-lun. Effects of different additives on the quality of double low rapeseed straw silage[J]. HUBEI AGRICULTURAL SCIENCES, 2025, 64(7): 133-136.

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