Effects of synchronization of carbohydrate and protein supply in total mixed ration with korean rice wine residue on ruminal fermentation, nitrogen metabolism and microbial protein synthesis in holstein steers

Three Holstein steers in the growing phase, each with a ruminal cannula, were used to test the hypothesis that the synchronization of the hourly rate of carbohydrate and nitrogen (N) released in the rumen would increase the amount of retained nitrogen for growth and thus improve the efficiency of mi...

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Veröffentlicht in:Asian-Australasian journal of animal sciences. - 1998. - 25(2012), 11 vom: 24. Nov., Seite 1568-74
1. Verfasser: Piao, Min Yu (VerfasserIn)
Weitere Verfasser: Kim, Hyun J, Seo, J K, Park, T S, Yoon, J S, Kim, K H, Ha, Jong K
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2012
Zugriff auf das übergeordnete Werk:Asian-Australasian journal of animal sciences
Schlagworte:Journal Article By-product Dairy Steer Microbial Protein Synthesis Purine Derivative Rice Wine Residue Synchronization)
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245 1 0 |a Effects of synchronization of carbohydrate and protein supply in total mixed ration with korean rice wine residue on ruminal fermentation, nitrogen metabolism and microbial protein synthesis in holstein steers 
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520 |a Three Holstein steers in the growing phase, each with a ruminal cannula, were used to test the hypothesis that the synchronization of the hourly rate of carbohydrate and nitrogen (N) released in the rumen would increase the amount of retained nitrogen for growth and thus improve the efficiency of microbial protein synthesis (EMPS). In Experiment 1, in situ degradability coefficients of carbohydrate and N in feeds including Korean rice wine residue (RWR) were determined. In Experiment 2, three total mixed ration (TMR) diets having different rates of carbohydrate and N release in the rumen were formulated using the in situ degradability of the feeds. All diets were made to contain similar contents of crude protein (CP) and neutral detergent fiber (NDF) but varied in their hourly pattern of nutrient release. The synchrony index of the three TMRs was 0.51 (LS), 0.77 (MS) and 0.95 (HS), respectively. The diets were fed at a restricted level (2% of the animal's body weight) in a 3×3 Latin-square design. Synchronizing the hourly supply of energy and N in the rumen did not significantly alter the digestibility of dry matter, organic matter, crude protein, NDF or acid detergent fiber (ADF) (p>0.05). The ruminal NH3-N content of the LS group at three hours after feeding was significantly higher (p<0.05) than that of the other groups; however, the mean values of ruminal NH3-N, pH and VFA concentration among the three groups were not significantly different (p>0.05). In addition, the purine derivative (PD) excretion in urine and microbial-N production (MN) among the three groups were not significantly different (p>0.05). In conclusion, synchronizing dietary energy and N supply to the rumen did not have a major effect on nutrient digestion or microbial protein synthesis (MPS) in Holstein steers 
650 4 |a Journal Article 
650 4 |a By-product 
650 4 |a Dairy Steer 
650 4 |a Microbial Protein Synthesis 
650 4 |a Purine Derivative 
650 4 |a Rice Wine Residue 
650 4 |a Synchronization) 
700 1 |a Kim, Hyun J  |e verfasserin  |4 aut 
700 1 |a Seo, J K  |e verfasserin  |4 aut 
700 1 |a Park, T S  |e verfasserin  |4 aut 
700 1 |a Yoon, J S  |e verfasserin  |4 aut 
700 1 |a Kim, K H  |e verfasserin  |4 aut 
700 1 |a Ha, Jong K  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Asian-Australasian journal of animal sciences  |d 1998  |g 25(2012), 11 vom: 24. Nov., Seite 1568-74  |w (DE-627)NLM098195883  |x 1011-2367  |7 nnns 
773 1 8 |g volume:25  |g year:2012  |g number:11  |g day:24  |g month:11  |g pages:1568-74 
856 4 0 |u http://dx.doi.org/10.5713/ajas.2012.12379  |3 Volltext 
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