The effect of starch, inulin, and degradable protein on ruminal fermentation and microbial growth in rumen simulation technique
| Autor: | Shan Zhou, Ming R. Qu, Xiang H. Zhao, Chan J. Liu, Jian M. Gong |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
0301 basic medicine
chemistry.chemical_classification Microbial growth Non-fibre carbohydrate Rumen degradable protein Ruminal fermentation Rusitec Fibrobacter succinogenes Starch Inulin 0402 animal and dairy science 04 agricultural and veterinary sciences Carbohydrate Biology 040201 dairy & animal science 03 medical and health sciences chemistry.chemical_compound Rumen 030104 developmental biology chemistry Biochemistry Propionate Animal Science and Zoology Fermentation Food science lcsh:Animal culture Digestion lcsh:SF1-1100 |
| Zdroj: | Italian Journal of Animal Science, Vol 13, Iss 1 (2014) |
| ISSN: | 1594-4077 |
| Popis: | A rumen simulation technique apparatus with eight 800 mL fermentation vessels was used to investigate the effects of rumen degradable protein (RDP) level and non-fibre carbohydrate (NFC) type on ruminal fermentation, microbial growth, and populations of ruminal cellulolytic bacteria. Treatments consisted of two NFC types (starch and inulin) supplemented with 0 g/d (low RDP) or 1.56 g/d (high RDP) sodium caseinate. No significant differences existed among dietary treatments in the apparent disappearance of dietary nutrients except for dietary N, which increased with increased dietary RDP (PRuminococcus flavefaciens (P≤0.010). Non-fibre carbohydrate source did not affect daily microbial N flow regardless of dietary RDP, but ammonia N production was lower for inulin than for starch treatments under high RDP conditions (PFibrobacter succinogenes in solid fraction (P=0.023) and R. flavefaciens in liquid (P=0.017) and solid fractions (P=0.007), but it increased the carboxymethylcellulase activity in solid fraction (P=0.045). Current results suggest that starch and inulin differ in ruminal volatile fatty acid fermentation but have similar effects on ruminal digestion and microbial synthesis in vitro, although inulin suppressed the growth of partial ruminal cellulolytic bacteria. |
| Databáze: | OpenAIRE |
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