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Asian Journal of Animal Sciences
Year: 2012  |  Volume: 6  |  Issue: 4  |  Page No.: 196 - 202

Effects of Drying and Ensiling on In situ Cell Wall Degradation Kinetics of Tomato Pomace in Ruminant

Naser Maheri-Sis, Mohammad Chamani, Ali Asghar Sadeghi, Ali Mirzaaghazadeh, Kambiz Nazeradl and Abolfazl Aghajanzadeh-Golshani    

Abstract: This study was carried out to evaluate effects of drying and ensiling on ruminal cell wall (neutral detergent fibre; NDF) degradation of tomato pomace using in situ technique. Nylon bags filled with 5 g (on dry matter basis) of each wet, dried and ensiled tomato pomace were suspended in the rumen of three fistulated Ghezel rams for 0, 2, 4, 8, 12, 24, 48 and 72 h and obtained data were fitted to a non-linear degradation model to calculate ruminal degradation characteristics. Results showed that drying and ensiling, cause significant decrease in cell wall degradation of tomato pomace at all incubation times. Cell wall water soluble fraction (a) was decreased and potentially degradable fraction (b) was increased, while rate of degradation (c) and potential degradability (a+b) were not significantly affected by drying and ensiling of tomato pomace. Effective rumen degradability of cell wall was significantly reduced by the processing. In an overall conclusion, cell wall degradability of fresh tomato pomace was higher than that of dried and ensiled form. In other word, ensiling and drying can exert negative effects on cell wall degradation of tomato pomace in the rumen.

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