6Gadd J. Tunnel housing of pigs in Livestock Environment Ⅳ. Fourth International Symposium. Michigan[J] . American society of Agricultural Enginneers, 1993,5: 1 040-1 048. 被引量:1
7Philippe F X, Laitat M, Wavreille J, et al. Ammonia and green- house gas emission form group-housed gestating sows depends on floor type[J]. Agr Eco Env, 2011,140(3-4): 498-505. 被引量:1
8De Jong I C, Ekkel E D, Van De Burgwal, et al. Effects of strawbedding on physiological responses to stressors and behav- ior in growing pigs[J]. Physiol Behav,1998, 64(3): 303-310. 被引量:1
9Turner S P, Ewen M, Rooke J A, et al. The effect of space al- lowance on performance, aggression and immune competence of growing pigs housed on straw deep-litter at different group sizes [J]. Livest Prod, 2000, 66(1): 47-55. 被引量:1
10Tam N F Y, Vrijmoed L L P. Effects of the inoculum size of a commercial bacterial product and the age of sawdust bedding on pig waste decomposition in a pig-On-litter system[J]. Waste Man R, 1993, 11(2): 107-115. 被引量:1