Early experience in the application and operation of the pig-on-litter systems in Hong Kong
1989
Lau, D.C.W. | Wu, M.M.W. (Environmental Protection Dept. (Hong Kong). Livestock Waste Control Group)
Three pig farms were selected for study on the application of the pig-on-litter system as a waste management method in controlling waste arising from pig keeping operations in Hong Kong. The system relies on the use of a special bedding material comprising a mixture of sawdust and bacterial product to rapidly decompose and stabilize the pig waste within the pig pen as and when such waste is produced. During the early stage, a few operational problems ranging from symptoms of respiratory discomfort and heat stress to pigs, to excessive wetting of the litter bed were encountered. However, such problems were satisfactorily resolved after remedial and preventive measures had been taken in controlling the moisture content of the litter bed, and provision of extraction fan to improve ventilation and air movement above the litter bed. Both of the two types of bacterial product tested were effective, and the additional operating cost ranged from HK$13/pig/month to HK$23/pig/month
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