Authors :
Agbogunleri, B.; Deekae, S.N.; Ngah, S.A.; Otene, B. B.; Ogan, H. I.
Volume/Issue :
Volume 8 - 2023, Issue 12 - December
Google Scholar :
http://tinyurl.com/bdd66r3d
Scribd :
http://tinyurl.com/mtedrzb7
DOI :
https://doi.org/10.5281/zenodo.10939973
Abstract :
This study used one control group i.e. BSFL
fed with spent grain from the hatching to prepupa stage
while the experimental group were BSFL fed with pig
manure only, chicken manure only, fruit wastes only
with other combinations. The objectives of this study
were to establish a small pilot facility for testing the
various organic wastes streams at a farm level,
determine the waste reduction efficiency from different
wastes streams tested at the farm with spoilt fruit
sourced from fruit market, determine efficiency of
digestion of wastes by BSFL. The results revealed larvae
grown on spent grain (SG) grew from 80mg on day4 to
118mg on day7 and by day13 it achieved a weight of
225mg. The larvae raised on pig manure (PM1) grew
from 82mg on day4 to 124mg on day7 and to 243mg on
day13.Those raised on (CM1) grew from 77mg on day4
to 249mg on day13. Those raised on FV1 grew from
75mg on day4 to 268mg on day16, while those raised on
PM2 grew from 82mg on day4 to 262mg on day16. The
larvae raised on CM2 grew from 77mg on day4 to 249mg
on day16 and those raised on FV2 grew from 78mg to
251mg on day16. Bioconversion rate (BCR) of BSFL fed
with SG recorded was 3.65, PM1 was 4.02, CM1 4.47,
FV1 was 4.36 while PM2 was 4.31. The CM2 was 4.44
while FV2 was 4.09. Feed conversion rate (FCR) for
BSFL fed with SG recorded was 22.37, PM1 was 24.85,
CM1 22.36, FV1 was 22.92 and PM2 was 23.22. The
FCR for CM2 was 22.51 while FV2 was 24.47. The best-
fit equation for SG showed an exponential growth with
R
2
equal to 0.9971. For PM1, the best-fit equation
showed an exponential growth with R2
equal to 0.9971
while the best fit equation for CM1 showed an
exponential growth with R2
equal to 0.9954. For FV1,
growth rate had the best-line of fit as polynomial with R2
equal 0.9724 while for PM2, growth rate had the best-
line of fit as linear function with R2
equal 0.9785. For
CM2, this growth rate revealed a polynomial function
with R2 equal to 0.9661 while FV2 revealed best-line of
fit as polynomial with R2
equal 0.981. Waste reduction
rate (WR) ranged from 55.2% to 62.58%. Results
showed BSFL grown on SG had performed better
(62.58%) followed by PM1 (59.6%) and CM1 (58.8%).
The waste reduction index (WRI) revealed BSFL fed
with SG recorded better waste reduction index (4.81)
followed by PM1 (4.58) and CM1 (4.52). The WRI from
CM2 was (3.45).Further studies on the quality of the
BSFL raised with these agricultural wastes and the
safety is required to enable NESREA consider BSFL as
an option for managing organic wastes in Nigeria.
This study used one control group i.e. BSFL
fed with spent grain from the hatching to prepupa stage
while the experimental group were BSFL fed with pig
manure only, chicken manure only, fruit wastes only
with other combinations. The objectives of this study
were to establish a small pilot facility for testing the
various organic wastes streams at a farm level,
determine the waste reduction efficiency from different
wastes streams tested at the farm with spoilt fruit
sourced from fruit market, determine efficiency of
digestion of wastes by BSFL. The results revealed larvae
grown on spent grain (SG) grew from 80mg on day4 to
118mg on day7 and by day13 it achieved a weight of
225mg. The larvae raised on pig manure (PM1) grew
from 82mg on day4 to 124mg on day7 and to 243mg on
day13.Those raised on (CM1) grew from 77mg on day4
to 249mg on day13. Those raised on FV1 grew from
75mg on day4 to 268mg on day16, while those raised on
PM2 grew from 82mg on day4 to 262mg on day16. The
larvae raised on CM2 grew from 77mg on day4 to 249mg
on day16 and those raised on FV2 grew from 78mg to
251mg on day16. Bioconversion rate (BCR) of BSFL fed
with SG recorded was 3.65, PM1 was 4.02, CM1 4.47,
FV1 was 4.36 while PM2 was 4.31. The CM2 was 4.44
while FV2 was 4.09. Feed conversion rate (FCR) for
BSFL fed with SG recorded was 22.37, PM1 was 24.85,
CM1 22.36, FV1 was 22.92 and PM2 was 23.22. The
FCR for CM2 was 22.51 while FV2 was 24.47. The best-
fit equation for SG showed an exponential growth with
R
2
equal to 0.9971. For PM1, the best-fit equation
showed an exponential growth with R2
equal to 0.9971
while the best fit equation for CM1 showed an
exponential growth with R2
equal to 0.9954. For FV1,
growth rate had the best-line of fit as polynomial with R2
equal 0.9724 while for PM2, growth rate had the best-
line of fit as linear function with R2
equal 0.9785. For
CM2, this growth rate revealed a polynomial function
with R2 equal to 0.9661 while FV2 revealed best-line of
fit as polynomial with R2
equal 0.981. Waste reduction
rate (WR) ranged from 55.2% to 62.58%. Results
showed BSFL grown on SG had performed better
(62.58%) followed by PM1 (59.6%) and CM1 (58.8%).
The waste reduction index (WRI) revealed BSFL fed
with SG recorded better waste reduction index (4.81)
followed by PM1 (4.58) and CM1 (4.52). The WRI from
CM2 was (3.45).Further studies on the quality of the
BSFL raised with these agricultural wastes and the
safety is required to enable NESREA consider BSFL as
an option for managing organic wastes in Nigeria.