Effects of Wilted and Additive on Silage Quality and Nutritional Value of King Grass

LI Mao; ZI Xuejuan; ZHANG Ying; ZHOU Hanlin; BAI Changjun; LIU Guodao

doi:10.3969/j.issn.1006-267x.2014.12.027

Chinese Journal of Animal Nutrition >

2014 , Vol. 26 >Issue 12: 3757 - 3764

DOI: https://doi.org/10.3969/j.issn.1006-267x.2014.12.027

Feed Science and Technology

Effects of Wilted and Additive on Silage Quality and Nutritional Value of King Grass

LI Mao ,
ZI Xuejuan ,
ZHANG Ying ,
ZHOU Hanlin ,
BAI Changjun ,
LIU Guodao

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1. Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou 571737, China;
2. College of Applied Science and Technology, Hainan University, Danzhoun 571737, China;
3. College of Agriculture, Hainan University, Haikou 570228, China

Received date: 2014-06-03

Online published: 2014-12-05

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Abstract

This experiment was conducted to study the effects of wilt and additive [pre-fermented juice (PFJ) and cellulose enzyme (C)] on silage quality and nutritional value of king grass. The groups were as follows: control, wilted (W), wilted+PFJ (WP), wilted+C (WP) and wilted+PFJ+C (WPC). The silos of each group were opened and analyzed after 30 days ensilage. The results showed as follows: 1) the pH of all groups were lower than 4.0, the pH in control group was significantly lower than that in W group (P<0.05), and WPC group had lowest pH. The lactic acid content in WPC group was the highest, and significantly higher than that in control group (P<0.05). The acetic acid content in control group was significantly higher than that in other groups (P<0.05), the acetic acid content in W group was significantly lower than that in other groups (P<0.05). All groups had no butyric acid detected. The ammonia-N/total nitrogen (AN/TN) in control group was significantly higher than that in other groups (P<0.05), the AN/TN in WPC group was significantly lower than that in other groups (P<0.05). 2) According to the grade of V-Score, silage quality of all groups were well, the score of control group had lowest score (83.45), and the scores of groups W, WP and WPC were higher than that in control group (more than 95). 3) The WPC group had the highest crude protein content and relative feed value (RFV), also it had the lowest neutral detergent fiber and acid detergent fiber content, all above was significantly higher than that in other groups (P<0.05). It is concluded that the silage quality of king grass silage without treatment is well but nutritional value is low, wilted king grass supplemented with PFJ+C mixed silage can improve the silage quality and nutritional value.

Key words： king grass; wilted; pre-fermented juice; cellulose enzyme; silage quality; nutritional value

Cite this article

LI Mao , ZI Xuejuan , ZHANG Ying , ZHOU Hanlin , BAI Changjun , LIU Guodao . Effects of Wilted and Additive on Silage Quality and Nutritional Value of King Grass[J]. Chinese Journal of Animal Nutrition, 2014 , 26(12) : 3757 -3764 . DOI: 10.3969/j.issn.1006-267x.2014.12.027

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