7Hinz T, Linke S A. Comprehensive experimental study of aer- ial pollutants in and emissions from livestock buildings. Part2 : Results [J]. Journal of Agricultural Engineering Research, 1998, 70(1) :119-129.
8Donham K J, Cumro D. Setting maximum dust exposure levels for people and animals in livestock facilities[C]// Proceedings of the International Symposium on Dust Control in Animal Production Facilities, 1999:93-109.
9Egbowon B, Osinowo O. Determination of heat stress index in three breeds of goat: Tool to a good management practice in goats, with reference to tropical goat breeds in NigeriaFM. Saarbrtieken, Germany : VDM Verlag Dr. Mtiller, 2010.
10Franc J, Franc O C, Philippe O X, et al. Gaseous emissions from weaned pigs raised on different floor systems[J]. Agri- culture, Ecosystems and Environment,2009,130(3-4) :86-92.