A manual for tilapia business management by Ram C. Bhujel

By Ram C. Bhujel

The last word target is to accomplish nutrition protection, create employment and generate profits. This ebook is an try to support enhance the tilapia whereas maintaining these objectives in brain. This guide is written to hide all points of tilapia farming as a enterprise. ranging from the significance of tilapia tradition, it covers unique tools of a confirmed hatchery expertise that has ensured construction and provide of thousands of top of the range monosex tilapia fry, accelerating the expansion of the tilapia globally. moreover, it describes how one can effectively develop tilapia in ponds and cages, and in polyculture and built-in farming platforms. The guide additionally covers a few biosecurity and fish overall healthiness administration facets and likewise postharvest dealing with, meals security, qc and advertising. This guide may be worthy to farmers, farm managers, extension staff, coverage makers, researchers, educators, experts and scholars (undergraduate and postgraduate). to be had In Print

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Size selections for breeders for commercial production of fry. Male Female Fig. 15. Separation of broodstock by sex. Male has pointed and long papilla, and female has round papilla. in ditches, rice fields, ponds, hapas/cages or tanks, depending upon the available facilities and the scale of operation. Males and females are stocked at either 1:1 or 1:2 ratios. Stocking density varies with facilities. Normal stocking density of broodfish is 2 fish/m2 (1 male:1 female) in ponds, 6 fish/m2 (1 male:2 females) in hapas (Fig.

Females of the mouth-brooding tilapia incubate eggs in their mouths until the young can swim independently (swim-ups). These free-swimming fry can be collected from the edges of the pond, hapa or tanks at intervals of 7–21 days using long scoop nets. This system is cheap and easy, but net fry production per unit area of space is very low because it is impossible to collect all the fry from the system. For this reason it is often called the ‘partial harvesting method’. Survival is also low due to predation and adverse environmental conditions.

6 43 Incubation system designs and technique After eggs are collected from the mouths of females they are incubated artificially in simple jars supplied with water filtered by a slow sand filter with or without a biological filter in a water recirculation system. Initially, the use of conical vessels, shaking tables and various containers was tried such as simple coke bottles and white water bottles (Macintosh and Little, 1995). However, locally made semi-transparent fibreglass jars were found to be suitable because their rough walls accelerate the process of removing egg shells and so facilitating egg hatching.

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