碩士 / 國立宜蘭大學 / 生物技術與動物科學系動物科學碩士班 / 102 / Abstract
The pig farming industry is the fourth largest livestock industry in Taiwan, however its value and manure production is the greatest. It not only generates a considerable amount of waste, but also contains a wealth of nutrients, which can be utilized as compost by mixing with the provision of agricultural production and possibly be used as a food source for earthworms. This study aims to evaluate if the largest amount of animal waste in Taiwan i.e pig manure (PM) mixed with sawdust (spent mushroom substrate/SMS) in different proportions, can be used for the culture medium of earthworms. Their growth efficiency was also analyzed. In the present study, 0% to 70% of the pig manure (PM0-PM7) was respectively mixed with 100% to 30% sawdust as the experimental groups (groups at every 10% interval) for vermiculture at the density 2.5g earthworm /100g substrate (dry weight)lasted for 8 -12 weeks in Trials 1 and 2. The results showed that the group PM7 (70% pig manure : 30% sawdust ) was significantly higher than other groups either in the final biomass or the growth rate. The performance of earthworms from the stratified experiments in Trial 3 showed that the earthworms not being able to adapt well with the treatment of 100% pig manure (PM10) but adapt well with the stratified substrate. Hence based on the preliminary results from Trial 3 the following experiment PM0, PM5, PM7 respectively mixed and placing PM in the upper or lower layers of SMS in Trial 4. For the treatment of pig manure placing underneath the sawust, its performance is worse than that of the upper and mixed treatments. Both PM5 and PM7 treatments with density 10g earthworm/100g (dry weight) achieved the greatest biomass in the eighth week and growth rate in the sixth week respectively, and aftetrwards both slowly decreased with the passing weeks. The commercial pig feed generally administered Cu, Zn to promote the growth and health of the animal will often lead to its manure containing high level of heavy metals. In the present study, the concentration of heavy metals in either earthworms or vermicomposting for 8 weeks both meet the safety requirements from the regulations of compost and fish meal. Therefore this study can be applied to the practical promotion of waste (pig manure) recycling and utilization.
| Identifer | oai:union.ndltd.org:TW/101NIU00289009 |
| Date | January 2014 |
| Creators | Chang Po-Chin, 張博欽 |
| Contributors | Chen Yung-Song, 陳永松 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 176 |
Page generated in 0.0079 seconds