Molecular Nutrition

Comparative Study on Silage Quality of Ramie and Grassy with Different Ratios

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  • Jiangxi Province Key Laboratory of Animal Nutrition, Engineering Research Center of Feed Development, Jiangxi Agricultural University, Nanchang 330045, China

Received date: 2018-12-10

  Online published: 2019-06-17

Abstract

Effect of different mixing ratios on the quality of ramie and grassy silage was discussed, which provided a theoretical basis for the preparation of high quality ramie silage. Ramie and grassy were used as raw materials for mixed silage according to the dry matter ratio of ramie to grassy:2:8, 3:7, 4:6 and 10:0 (A, B, C and D groups). The results showed as follows:1) individual silage ramie had a high butyric acid content, and the Freund's rating was only "inferior", and mixed silage by adding grassy could significantly improve the fermentation quality; the nutritional value of mixed silage was increased significantly with the increase of the ratio of grass, and the silage quality decreased significantly when the mixed silage ratio was higher than 70% (P<0.05); the quality of silage was the best when ramie to grassy mixed ratio at 2:8, besides the fiber components (neutral detergent fiber and acid detergent fiber) and ammonia nitrogen/total nitrogen were lower and the crude protein and lactic acid contents were higher than other mixing ratios. 2) In the rumen degradation characteristics experiment, the degradation rate of nutrients such as dry matter, organic matter, crude protein, neutral detergent fiber and acid detergent fiber of mixed silage in the rumen of A, B and C groups was gradually increased with the prolongation of the rumen staying time from 6 to 72 h; for dry matter, organic matter and acid detergent fiber, the degradation rate of group A was the highest, followed by group C, the lowest was group B. There was no significant difference in the degradation rate of crude protein and neutral detergent fiber among three groups (P>0.05), but the crude protein and neutral detergent fiber of mixed silage of group A had the highest effective degradation rate. Considering comprehensively, it is recommended that the optimum ratio of ramie to grassy mixed silage is 2:8 in production.

Cite this article

XU Lanjiao, ZHAO Erlong, BAI Jun, WAN Gen, LIANG Huan, QU Mingren, OUYANG Kehui . Comparative Study on Silage Quality of Ramie and Grassy with Different Ratios[J]. Chinese Journal of Animal Nutrition, 2019 , 31(6) : 2830 -2841 . DOI: 10.3969/j.issn.1006-267x.2019.06.044

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