As shown in Table 3 many end products are commonly produced during the fermentation process but many of these end products are associated with less than desirable fermentations. Of the several types of acids produced during, lactic acid is the strongest acid (10 times more strong than the other acids) and preferred end product of silage fermentation. In fact, homolactic acid fermentation that produces only lactic acid would be the desirable fermentation because of the high energy and dry matter recoveries (Table 4). Note that in the undesirable fermentations, large amounts of carbon dioxide (CO2) are produced. Because CO2 is a gas, the carbon (or dry matter) is lost to the environment. This explains why these fermentations have low DM recoveries.