1) The study examined the effect of different amounts of worms (50g, 100g, 150g) on the degradation of organic matter in cattle manure during vermicomposting. 2) Results showed that organic matter degradation occurred faster with 150g of worms compared to lower amounts. 3) Over 45 days, the chemical composition of the vermicompost was altered as organic matter and carbon decreased while nitrogen increased in all treatments.

2. EFFECT OF THE AMOUNT OF WORMS ON
ORGANIC MATTER DEGRADATION IN CATTLE
MANURE
AKIBUR RAHMAN
ID. No.: 18AS-JJ- 12M
Reg. No.: 40313, Session: 2012-2013
Department of Animal Science
Bangladesh Agricultural University,
Mymensingh-2202

3. Supervisor
Dr. Md. Mukhlesur Rahman
Professor
Department of Animal Science
Bangladesh Agricultural University
Co-supervisor
Dr. Md. Abul Hashem
Professor
Department of Animal Science
Bangladesh Agricultural University
SUPERVISORY COMMITTEE

4.  Introduction
 Objectives
 Materials and Methods
 Results
 Conclusion
OUTLINES

5. INTRODUCTION
• Vermicomposting is a process that involves
chemical, physical, and biological
transformation of solid organic materials
(agricultural residues of plant and animal
origin) through the use of worms and
microorganisms.
• There are 1800 species of earthworm present in
the. But the most commonly used is Eisenia
fetida, commonly known as the “compost
worm”, manure worm and red worm.

6. Vermicompost is rich in nitrogen, Phosphorus & potassium.
Nitrogen 2 - 3%
Phosphorus 1.55 - 2.25%
Potassium 1.85 - 2.25% and
Micronutrients, beneficial soil microbes and plant growth
hormones and enzymes.
Figure: Vermicomposting worms
INTRODUCTION (contd.)

7. OBJECTIVES
 To compare the efficiency of OM degradation
among different amounts of worms used for
vermicomposting.
 To know the efficiency of earthworm activity
during decomposition of cow manure with
different amounts of worms used.
 To know the chemical composition of
vermicompost produced from cattle manure.

8. MATERIALS AND METHODS
Experiment
Vermicompost
preparation
Laboratory analysis of
vermicompost
Goat and Sheep Farm of
Animal Science Department,
BAU, Mymensingh.
Laboratory of Animal
Science Department, BAU,
Mymensingh.

9. Experimental design and treatments: The experiment was
conducted following three treatments with 3 replications.
MATERIALS AND METHODS (contd.)

10. Vermicomposting process:
Figure: Addition of worms and final vermicompost
MATERIALS AND METHODS (contd.)
Cattle manure
and earthworm
Final
vermicompost

11. Chemical composition of raw cattle manures:
T1=Vermicomposting of cattle manure with 50 g worms, T2 =
Vermicomposting of cattle manure with 100 g worms, T3 =Vermicomposting
of cattle manure with 150 g worms.
RESULTS
Parameters T1 T2 T3
DM
20.99±0.61 20.79±0.76 21.05±0.51
OM 16.12 ±0.78 16.21 ±0.67 16.19 ±0.66
Ash
2.67 ±0.16 2.81 ±0.24 2.76 ±0.19
OC
11.32 ± 0.30 11.25 ± 0.10 11.28 ± 0.45
TKN
1.26 ± 0.08 1.18 ± 0.09 1.32 ± 0.08
CF
4.43 ±0.05 4.32 ±0.06 4.23 ±0.06
C/N
16.26 ± 0.14 16.33 ± 0.10 16.36 ± 0.19
PH
8.31 ± 0.09 8.45 ± 0.08 8.27± 0.09

12. DM alteration over time (from 0 to 45 days)
T1=Vermicomposting of cattle manure with 50 g worms, T2 = Vermicomposting of
cattle manure with 100 g worms, T3 =Vermicomposting of cattle manure with 150 g
worms.
RESULTS (contd…)
DI Treatments Mean Level of significance
T1 T2 T3 Treat DI T*DI
0 20.99±0.61 20.79±0.76 21.05±0.51 20.94±0.63
<.0001 <.0001 0.0205
15 21.13 ±0.88 22.08±0.06 23.43±0.82 22.21±0.58
30 23.71 ±0.55 24.41±0.56 25.43±0.46 24.51±0.52
45 25.36 ±1.20 26.71±0.21 28.46 0.90 28.84±0.69

13. OM alteration over time (from 0 to 45 days)
T1=Vermicomposting of cattle manure with 50 g worms, T2 = Vermicomposting
of cattle manure with 100 g worms, T3 =Vermicomposting of cattle manure with
150 g worms
RESULTS (contd…)
DI Treatments Mean Level of significance
T1 T2 T3 Treat DI T*DI
0 16.12 ± 0.78 16.21±0.67 16.19±0.66 16.17±0.70
p<.0001 p<.0001 0.0651
15 15.71 ±0.98 15.49±0.95 15.32±0.70 15.50±0.87
30 15.48 ± 0.71 15.23±0.27 15.16±0.40 15.29±0.46
45 14.60 ± 1.29 14.38±0.15 14.11±0.81 14.36±0.75

14. Ash alteration over time (from 0 to 45 days)
T1=Vermicomposting of cattle manure with 50 g worms, T2 = Vermicomposting
of cattle manure with 100 g worms, T3 =Vermicomposting of cattle manure with
150 g worms
RESULTS (contd…)
DI Treatments Mean Level of significance
T1 T2 T3 Treat DI T*DI
0 2.67±0.16 2.81 ±0.24 2.76 ±0.19 2.74±0.19
P<.0001 P<.0001 P<.0011
15 2.52 ±0.11 2.48 ±0.04 2.31±0.11 2.43±0.08
30 2.43 ±0.15 2.10±0.04 2.16 ±0.07 2.23±0.09
45 1.95 ±0.08 2.03 ±0.06 1.84 ±0.09 1.97±0.07

15. RESULTS (contd…)
DI Treatments Mean Level of significance
T1 T2 T3 Treat DI T*DI
0 11.32±0.31 11.25±0.10 11.28 ±0.45 11.28±0.28
P<.0001 P<.0001 0.0006
15 11.06±0.11 11.03±0.05 10.96±0.41 10.68±0.18
30 10.63±0.16 10.53±0.15 10.17±0.22 10.44±17
45 10.44±0.11 10.41±0.09 9.91 ±0.47 10.25±0.22
T1=Vermicomposting of cattle manure with 50 g worms, T2 = Vermicomposting
of cattle manure with 100 g worms, T3 =Vermicomposting of cattle manure with
150 g worms
OC alteration over time (from 0 to 45 days)

16. TKN alteration over time (from 0 to 45 days):
T1=Vermicomposting of cattle manure with 50 g worms, T2 = Vermicomposting
of cattle manure with 100 g worms, T3 =Vermicomposting of cattle manure with
150 g worms
RESULTS (contd…)
DI Treatments Mean Level of significance
T1 T2 T3 Treat DI T*DI
0 1.26 ±08 1.18 ± 0.09 1.32 ± 0.08 1.25 ±08
0.0001 P<.0001 P<.0001
15 1.61 ±0.04 1.34 ±0.05 1.40 ±0.08 1.45±0.05
30 1.82 ±0.08 1.56 ±0.06 1.85 ±0.09 1.74±0.07
45 1.98 ±0.06 2.38 ±0.81 2.95 ±0.07 1.77±0.31

17. CF alteration over time (from 0 to 45 days)
T1=Vermicomposting of cattle manure with 50 g worms, T2 = Vermicomposting
of cattle manure with 100 g worms, T3 =Vermicomposting of cattle manure with
150 g worms
RESULTS (contd…)
DI Treatments Mean Level of significance
T1 T2 T3 Treat DI T*DI
0 4.43 ±0.04 4.32 ±0.06 4.23 ±0.06 4.32 ±0.05
P<.0001 P<.0001 P<.0001
15 3.16 ±0.05 2.94 ±0.06 2.86 ±0.16 2.98±0.09
30 2.99 ±0.07 1.82 ±0.07 1.56 ±0.12 2.12±0.08
45 2.38 ±0.10 0.72 ±0.08 0.66 ±0.06 1.25±0.08

18. C/N alteration over time (from 0 to 45 days)
T1=Vermicomposting of cattle manure with 50 g worms, T2 = Vermicomposting
of cattle manure with 100 g worms, T3 =Vermicomposting of cattle manure
with 150 g worms
RESULTS (contd…)
DI Treatments Mean Level of significance
T1 T2 T3 Treat DI T*DI
0 16.26±0.13 16.33±0.10 16.36±0.19 16.31±0.14
P<.0001 P<.0001 P<.0001
15 15.98±0.24 15.87±0.45 15.69±0.25 15.84±0.23
30 14.40±0.13 13.81±0.47 13.23±0.21 13.81±0.27
45 13.26±0.13 12.97±0.28 11.91±0.15 12.71±0.18

19. pH alteration over time (from 0 to 45 days)
T1=Vermicomposting of cattle manure with 50 g worms, T2 = Vermicomposting
of cattle manure with 100 g worms, T3 =Vermicomposting of cattle manure with
150 g worms
RESULTS (contd…)
DI Treatments Mean Level of significance
T1 T2 T3 Treat DI T*DI
0 8.31±0.09 8.45 ± 0.08 8.27± 0.09 8.34±0.08
0.0450 P<.0001 0.5711
15 8.14 ± 0.05 8.76 ±0.05 8.72 ±0.03 8.70±0.04
30 9.07 ±0.11 9.17 ±0.07 8.23 ±0.05 8.82±0.7
45 9.01 ±0.05 9.10 ±0.05 8.47 ±0.20 8.76±0.10

20. CONCLUSION
Organic matter degradation rate is faster in
vermicomposting of cattle manure which
treated with 150 gm of worms than the
vermicomposting of cattle manure which
treated with 100 gm and 50 gm of worms
respectively.
45 days is enough for vermicomposting of cattle
manure.