TITLE:
Characterization of Finfish Hatchery Waste for Value Added Product
AUTHORS:
Sujjat Al Azad, Mohammad Tamrin Bin Mohamad Lal, Al-Najib Bin Benjamin
KEYWORDS:
Hatchery Waste, Nutrients, Bioprocess, Microbe and Value Added Product
JOURNAL NAME:
Advances in Bioscience and Biotechnology,
Vol.11 No.3,
March
13,
2020
ABSTRACT: Commercial fish hatchery generates waste both
organic and inorganic; the sources are primarily from uneaten food and fish
feces. Conventional methods of treating hatchery wastes will increase the
operating cost and become extra burden in production. It is necessary to
develop a new research application of this nonconventional resource and reduce
the negative impacts of hatchery waste on the environment. The whole project is
to utilize hatchery waste through bioprocess for probiotic fortified live feed
production. In this study, the chemical
composition of hatchery waste was determined to understand the suitability
waste to get value-added
derived products through bioprocess. Composite samples were collected everyday
and dried in an oven at a temperature of 65°C until complete dryness. Dried samples were mixed well and grinded into
fine powder. The analytical parameters like total solids, ammonium nitrogen,
nitrite, nitrate and phosphate were determined from the freshly collected
samples. Total nitrogen, total phosphorus and total potassium were determined
from the dry samples. Total solids, ammonium nitrogen, nitrite, nitrate and
phosphate-phosphorus were observed in the ranged from 75 - 82 mg/L, 0.25 - 8.5 mg/L, 0.05 - 1.9 mg/L, 0.04 - 6.7 mg/L and 4.1 - 16.7 mg/L respectively. On
the other hand, the
mean content of 3.75% total nitrogen, 1.80% total phosphorus and 0.15%
potassium were determined in dry hatchery wastes. The analytical parameters are
useful and demonstrate that the nutrients in both fresh and dry waste will be
supportive for the growth of microbes in the bioprocess system.