Efeito da adição de pepsina na silagem de milho grão reidratado em dieta de novilhos suplementados a pasto

Abstract

Rehydration corn grain silage can be an alternative to increase starch digestibility, considering that fermentation acids or the proteolysis process provided by enzymes can degrade zeine proteins. These proteins are hydrophobic and reduce starch digestion. This study aimed to evaluate the performance of cattle fed corn grain rehydrated and ensiled for 15 days and added or not 0.05 grams per kilo of pepsin. The treatments consisted in replacing dry and ground corn grain in the diet of the animals by corn silage rehydrated grain without the addition of pepsin or corn silage rehydrated grain added pepsin at a dosage of 0.05 grams per kilogram of corn. Corn grain was ensiled for 15 days. When evaluating the data it was observed that there were no significant statistical differences between the treatments for final live weight, hot carcass weight, average daily gain, carcass yield and cost with concentrate per kilogram of gain. The addition of 0.05 grams of pepsin per kilogram of corn in rehydrated and ensiled corn for 15 days did not affect the performance of cattle in finishing supplemented with pasture.