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- Title
Nutritional Evaluation of Several Forage in Guangxi, China.
- Authors
Zou Cai-xia; Yang Bing-zhuang; Liang Xian-wei; Liang Kun; Wei Sheng-ju; Xia Zhong-sheng; Liu Jian-xin
- Abstract
The in vitro gas production method (Menke and Steingass ,1988) was used to evaluate the nutritional valuation of elephant grass, cassava pulp, corn silage and corn bract and cob. Rumen fluid used for determination of gas production (GP) was collected from two rumen-fistulated sheep. The gas production on 0, 3, 6, 9, 12, 24, 36, 72, 96 h were recorded. And after incubation 96 h, the fermentation products were used to determine the content of acetate, propionate, butyrate and ammonia-N. The GP in different time of cassava pulp was higher than the other forages. The curve of corn silage and elephant grass was similar. The potential GP of corn bract and cob was the highest, following by cassava pulp, corn silage and elephant grass. The total VFA of the elephant grass was the lowest and the three other were similar. The propionate of cassavas pulp was the highest in 4 forages and the ammonia-N of cassava pulp was the lowest among 4 forages. Based on the relative feed value (RFV) calculation, the RFV of those forage were as follows, cassava pulp (149.5)> corn silage(83.3)> elephant grass(68.3)> corn bract and cob(61.5). The arrange of digestible organic matter (DOM) and metabolizable energy (ME) in those four forages were cassavas pulp (734.7 g/kg, 10.16 MJ/kg DM), corn bract and cob (651.4 g/kg, 8.98 MJ/kg DM), corn silage (578.7 g/kg?7.96 MJ/kg DM), elephant grass (575.6 g/kg?7.92 MJ/kg DM).
- Subjects
NUTRITIONAL assessment; CENCHRUS purpureus; CORN; SILAGE; CORNCOBS; RUMEN fermentation; ANIMAL feeding; ENERGY metabolism; ORGANIC compounds; ANIMAL nutrition
- Publication
Revista Veterinaria, 2010, Vol 21, Issue 1, p678
- ISSN
1668-4834
- Publication type
Article