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Ruminal microbial responses in fermentation characteristics and dry matter degradability to TDN level of total mixed ration
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 Title & Authors
Ruminal microbial responses in fermentation characteristics and dry matter degradability to TDN level of total mixed ration
Lee, Seung-Uk; Jo, Jin-Ho; Park, Sung-Kwon; Choi, Chang-Weon; Jeong, Jun; Chung, Ki-Young; Chang, Sun-Sik; Li, Xiang Zi; Choi, Seong-Ho;
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 Abstract
An in vitro trial was conducted to examine the effects of total mixed rations (TMR) on fermentation characteristics and effective degradability (ED) by rumen microbes. Three TMR diets were growing period TMR (GR-TMR, 67% TDN), early fattening period TMR (EF-TMR, 75.4% TDN) and late fattening TMR (LF-TMR, 80% TDN). Three TMR diets (3 g of TMRs in each incubation bottles) was added to the mixed culture solution of stained rumen fluid with artificial saliva (1:1, v/v) and incubated anaerobically for 48 hours at . The pH in all incubation solutions tended to decrease up to 48h, but the opposite results were found in concentration of total gas production, ammonia-N and total VFA in all incubations.The total gas production (p<0.05) in LF-TMR was highest compared with those of other diets. Also, concentration of total VFA was tended to increase in LF-TMR compared with other TMR diets in all incubations. The EDDM in both EF-TMR and LF-TMR was tended to high compared with GR-TMR (p
 Keywords
fermentation;rumen microbes;ruminal degradation;TDN;TMR;
 Language
English
 Cited by
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