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PEMBANGUNAN AMALAN PENANAMAN BUAH GAC (Momordica cochinchinensis) BAGI MENGGALAKKAN PERTUMBUHAN DAN PRODUKTIVITI
No full textInnovation in the Norwegian aquaculture industry
No full textGlobal aquaculture production has grown very rapidly in recent decades. This is
largely due to a number of innovations that has increased the control with the production
process and competitiveness. These innovations come in a number of
forms from radical new concepts to knowledge adaption from the terrestrial food
production system. While there exist a number of studies investigating the impact
of specific innovations, there are few studies that take a larger perspective on how
innovations over time impacts an aquaculture industry or the innovation system
that support these innovations. In this paper we review the innovation process in
Norwegian salmon aquaculture industry from its infancy in 1970 until present. Of
particular interest is the increasing complexity of the industry, and how most innovations
are conducted by suppliers and not the aquaculture producers themselves.
The insights are also of general interest in global aquaculture as salmon is among
the species with the most advanced production technologies, but also a species
where innovations are adapted to other species also in very different production
systems
Assessment of heavy metal pollution in water and its effect on Nile tilapia (Oreochromis niloticus) in Mediterranean Lakes: a case study at Mariout Lake
No full textMariout Lake is one of the Northern Nile-Delta Lakes in Egypt that receives agricultural, industrial and domestic effluents
through several drains. The present study aims to evaluate the levels of some heavy metals (HMs) in water and edible parts
of Oreochromis niloticus in Mariout Lake, in addition to studying several pollution indices and potential human health risks.
The levels of the studied HMs in water were in the order of Fe > Zn > Mn > Pb > Cu > Ni > Cd. However, results of the pollution
index, that concerns the effect of individual metal, concluded that Cd and Pb in water had serious pollution effects for
aquatic life, while Cu, Fe, Mn, Ni, and Zn had not any pollution effects at different locations in the lake. The indices of the
composite effects of all HMs (Metal Index and Heavy Metal Pollution Index) indicated the high pollution of Mariout Lake
water, which may cause adverse effects on fish and different aquatic organisms. On the other side, the bioaccumulation factors
of HMs in edible parts of O. niloticus were in the order of Zn > Cd > Cu > Ni > Pb > Mn > Fe. Although the target hazard
quotient for all metals was less than the non-hazardous limit (THQ < 1), the non-carcinogenic hazard index (HI = 1.24) was
classified in the moderate hazard risk level (1 < HI < 10) indicating low potential adverse effects on the exposed population
due to consumption of O. niloticus caught from Mariout Lake