Revista Brasileira de Zootecnia | |
Ammonia production from in vitro fermentation of diets with dry yeast, urea or cottonseed meal | |
Vieira, Paulo de Figueiredo1  Brito, Rodolfo Marques de3  Sampaio, Alexandre Amstalden Moraes2  | |
[1] Unesp;Unesp, Jaboticabal;UNESP | |
关键词: ammonia; cottonseed meal; dry yeast; protein sources; ruminal fermentation; urea IntroduçãoO ruminante é dotado de sistema digestivo peculiar que permite a digestão de alimentos fibrosos; transformando-os em princípios nutritivos úteis; a partir do mutualismo existente entre o animal e a microbiota ruminal; | |
DOI : 10.1590/S1516-35982000000200037 | |
学科分类:兽医学 | |
来源: Universidade Federal de Vicosa | |
【 摘 要 】
- The objective of this trial was to evaluate the in vitro ammonia (N-NH3) production in fermentation of diets with different protein sources (dry yeast, urea and cottonseed meal) used for ruminants diets. The data relative to the N-NH3 production measured in the first hour of incubation, showed differences between diets with cottonseed meal and dry yeast, compared with diets with urea, with values of 7.52; 8.66; and 29.84 mg N-NH3/100 mL of ruminal fluid, respectively. The same pattern was observed until 12 hours of fermentation, with values of 1.05; 1.57; and 8.57 mg N-NH3/100 mL. The analysis of data related to the 12 hourly sample of fermentation showed the trend of decreasing N-NH3/100 mL concentration of ruminal fluid, reaching the lower values on 12 hours of fermentation.
【 授权许可】
CC BY-NC
【 预 览 】
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