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Your search for "2417" gave back 184 results.

Genetic parameter and genotype by environment interaction for body weight of Oreochromis shiranus

Genetic and phenotypic parameter estimates for tagging and harvest body weights were obtained from the F1 base (377 offspring of 59 full-sib families), F2 (1241 offspring of 52 full- and 33 half-sib families) and F3 (1052 offspring of 55 full- and 25 half ...

Type: Publication

GIFT technology manual: an aid to tilapia selective breeding

This manual is intended as an aid in the transfer of the selective breeding technology developed by the WorldFish Center and its partners. It was based upon experience and material accumulated during the ‘Genetic Improvement of Farmed Tilapia’ (GIFT) ...

Type: Publication

Investment Appraisal of Genetic Improvement Programs in Nile tilapia (Oreochromis Niloticus)

The economic benefit derived from a genetic improvement program with Nile tilapia (Oreochromis niloticus) was examined from a national perspective. An industry structure was assumed whereby the genetic improvement program is conducted in a nucleus which ...

Type: Publication

Japan's support to research on genetics and aquaculture in Africa

In 2002 Japan's contribution to the WorldFish Center has supported research on genetics and aquaculture in Africa. Two projects have benefited especially from this support. Their activities and achievements in 2002 and plans for 2003 are reported. ...

Type: Publication

Mass spawning of Oreochromis niloticus for fry production: threats and opportunities for small-scale aquaculture and selective breeding

Mass selection based on mass spawning can present a feasible and low-cost selective breeding scheme. In mass spawning, however, mating is not controlled and a small number of breeding individuals may account for a lafgeproportion of the next geperation, ...

Type: Publication

On-farm and on-station comparison of wild and domesticated Cameroonian populations of Oreochromis niloticus

Wild (Sanaga River) and domesticated populations of Oreochromis niloticus were compared onfarm and on-station in the Central Province of Cameroon to determine the degree to which genetic deterioration of stocks may have occurred during the process of ...

Type: Publication

Opportunities and challenges for African aquaculture

Starting from a small base, aquaculture production in Africa registered annual growth rates equal to or above those in other regions. This expansion was due to significant increases in a few African countries. Increasing demand coupled with rapidly ...

Type: Publication

Pawpaw seed as fertility control agent on male Nile tilapia

To find out if pawpaw (Carica papaya) seeds can induce sterility in male Nile tilapia (Oreochromis niloticus) and to determine if sterility so induced is reversible or otherwise, mature male tilapia of mean weight 40 g were treated for 30 days with a low ...

Type: Publication

Pioneering fish genetic resource management and seed dissemination programmes for Africa: adapting principles of selective breeding to the improvement of aquaculture in the Volta Basin and surrounding areas

This document represents the report and contributed papers from a workshop of the same name. The workshop was comprised of a group of 30 international experts and representatives of the environmental, fisheries and policy development agencies of the ...

Type: Publication

Restocking and stock enhancement of coastal fisheries: Potential, problems and progress

The demand for fish is expected to rise substantially by 2020. Although aquaculture must provide much of the additional fish, it remains to be seen whether restored or enhanced capture fisheries can also help fill the projected gap in supply. The key ...

Type: Publication

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