发酵床养殖模式对猪生长性能和猪舍空气质量的影响

total of 120 crossbred (Duroc×Landrace×Yorkshire), healthy and half male and female weaned pigs with 6.4kg body weight were selected randomly divided into three groups, pigs of the first group, experimental group, were kept in deep-litter system, bacteria additives provided by Hunan Institute of Microbiology, while the second group, experimental group, were kept in deep-litter system, bacteria additives provided by Hunan Tai-gu Biotechnology Co.,Ltd.. The third group, control group, was kept in a conventional system. When compared to pigs kept conventionally, pigs kept in the first group and the second had higher average daily gain and better food conversion from weaning to marketing(P<0.05), but there was no significant effect between the first group and the second. Ammonia concerntration from pigs raised on the deep litter was very significantly lower than that on conventional floor(P<0.01), while hydrogen sulfide in the two way was less than 0.5mg/m3, the deep-litter system and conventional system had no difference in carbon dioxide content. Deep litter housing system improved growth performance of commercial pigs and provided better environmental results than the conventional housing systems.