Vegetable by-product disposal and animal manures as a feed source to raise earth worm (Perionyx excavatus)

Luu Huu Manh, Nguyen Nhut Xuan Dung , Ngo Ngoc Hung and Lam Kim Ngan*
 

 Cantho University
*Tay Do University

SUMMARY

A study on using vegetable by-product disposal (VBD) in combination with animal manures at different levels to raise earth worm (Perionyx excavatus) was designed into five treatments in a randomized completely design with 3 replicates. Pig, cattle and chicken manures were decomposed in 3-4 weeks before mixing with vegetable by-product disposal. 70% of VBD was composed with 30% of manure of cattle, pig, chicken for treatment 1, 2 and 3, respectively; 40% of it plus 20% of pig, cattle and chicken manure (treatment 4), and 100% VBD only (treatment 5). The results showed that blue worm is well growth on pig and cattle manure based VBD.  Protein content of Perionyx excavatus (43-51%) was not affected by formula of feeds, but dry and protein biomass were closely related to the dry matter or protein input (R² = 0,82 and 0,92, respectively). After decomposing, Salmonella and parasitic eggs were totally absent, Coliform was low in pig and cattle manure (93 and 7 x 10² MNP/g), but they were slightly higher in treatment 5 (460 x 10² MNP/g).

Except for chicken manure, the VBD blended with pig or cattle can be used as source of feed to raise earth worm. Decomposed pig manure is the best compared with cattle manure.

Key words: decomposed manure, biomass production, organic disposal, Entero-bacteria counts, parasitic eggs