Abstract:

Deep-litter System as an agricultural rearing technique, can help to reduce animal manure egesta and pollution in which selection and management of raw materials for litter are of great importance. For the same total mass of each treatment, 5 treatments were carried out: traditional litter(CK), 70% traditional litter+30% corn straw(30% S), 40% traditional litter+60% corn straw(60% S), 10% traditional litter+90% corn straw(90% S), 20% traditional litter+60% corn straw +20% zeolite(60% S+20% Z), to research on the characteristics of litter pre-fermentation before breeding. The results showed that the temperature of different litters could reach 45℃ after stacking 2~4 d and maintain 1~3 d, the moisture content, total nitrogen, organic matter of all treatments reduced gradually with composting process, the pH values rose gradually, no significant change in EC was found during litter pre-fermentation. 30% S can be helpful for fermentation for its highest temperature during high temperature period and cooling period, which can also reduce moisture content, total nitrogen, organic matter of the mixed litter by 16.23%, 26.31%, 37.06% at the end of pre-fermentation, and increased pH by 7.13%.