Dynamics Associated with Prolonged Ensiling and Aerobic Deterioration of Total Mixed Ration Silage Containing Whole Crop XXXX .

@entity3363 @entity4336 @entity375 @entity880
This study investigated the dynamics associated with prolonged ensiling and aerobic deterioration of whole crop @entity4336 (WCC) silages and total mixed ration (TMR) silages containing WCC (C-TMR silages) to clarify the differences that account for the enhanced aerobic stability of TMR silages. Laboratory-scale barrel silos were randomly opened after 7, 14, 28, and 56 d of ensiling and were subjected to analyses of fermentation quality, microbial and temperature dynamics during aerobic exposure. WCC and C-TMR silages were both well preserved and microorganisms were inhibited with prolonged ensiling, including @entity880 bacteria. @entity375 were inhibited to below the detection limit of 500 cfu/g fresh matter within 28 d of ensiling. Aerobic stability of both silages was enhanced with prolonged ensiling, whereas C-TMR silages were more aerobically stable than WCC silages for the same ensiling period. Besides the high moisture content, the weak aerobic stability of WCC silage is likely attributable to the higher @entity880 content and @entity375 count, which result from the high water-soluble @entity3363 content in WCC. After silo opening, @entity375 were the first to propagate and the increase in @entity375 levels is greater than that of other microorganisms in silages before deterioration. Besides, increased levels of aerobic bacteria were also detected before heating of WCC silages. The temperature dynamics also indicated that @entity375 are closely associated with the onset of the aerobic deterioration of C-TMR silage, whereas for WCC silages, besides @entity375 , aerobic bacteria also function in the aerobic deterioration. Therefore, the inclusion of WCC might contribute to the survival of @entity375 during ensiling but not influence the role of @entity375 in deterioration of C-TMR silages.
