Browsing by Author "Ponzoni, R.W."
Now showing items 41-60 of 70
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Genetic variance for uniformity of harvest weight in Nile tilapia (Oreochromis niloticus)
(2016)Type: Journal ArticleCompetition for resources is common in aquaculture, which inflates the variability of fish body weight. Selective breeding is one of the effective approaches that may enable a reduction of size variability (or increase in ... -
Genetics of flesh quality in fish
(2010)Type: Conference PaperFlesh quality has gained importance among consumers and in the aquaculture industry because it is directly related to human health and nutrition. Flesh quality comprises several different (freshness, appearance, smell, ... -
Genotype by environmental interaction for live weight between two production environments in the GIFT strain (Nile tilapia, Oreochromis niloticus)
(2009)Type: Conference PaperA genotype by environmental interaction study was conducted using the live weight data collected from three discrete spawning seasons of Genetically Improved Farmed Tilapia selective breeding program in Malaysia. Two ... -
Genotype by production environment interaction in the GIFT strain of Nile tilapia (Oreochromis niloticus)
(2012)Type: Journal ArticleThree discrete generations of GIFT fish (Nile tilapia strain, Oreochromis niloticus; a total of 10,065 fish with pedigree and phenotypic information) were tested in pond and cage culture environments to determine genotype ... -
GIFT tilapia raise culture efficiency in Sri Lanka
(2011)Type: Journal ArticleThe wide distribution and ongoing improvement of GIFT tilapia in Sri Lanka is raising the living standards of poor people and contributing to gender equality through employment for women in rural areas. So far, the GIFT ... -
GIFT: the story since leaving ICLARM (now known as the WorldFish Center): socioeconomic, access and benefit sharing and dissemination aspects
(2010)Type: ReportThe aim of the overall project of which this report is part is to identify possible solutions for regulating access to aquatic genetic resources and legal protection of the results of research and development in aquaculture ... -
Growth and survival rate of three genetic groups fed 28% and 34% protein diets
(2012)Type: Journal ArticleThe strain by nutrition interaction in body weight and survival rate was examined by testing three genetic groups (Selection and Control lines of the GIFT strain, and Red tilapia) at two levels of protein in the diet (28% ... -
Growth performance of mixed sex, hormonally sex reversed and progeny of YY male tilapia of the GIFT strain, Orechromis niloticus
(2009)Type: Journal ArticleThe growth performance of three experimental groups consisting of mixed sex fish (control), hormone-treated fish and progeny of YY male tilapia, all originated from the genetically improved farmed tilapia (GIFT) strain was ... -
Heritability estimates and response to selection for growth of Nile tilapia (Oreochromis niloticus) in low-input earthen ponds
(2006)Type: Journal ArticleThis study presents results of two generations of selection (G1 and G2) for growth of Nile tilapia. The selection environment consisted of earthen ponds which were fertilized daily with 50 kg dry matter (dm)/ha chicken ... -
Heterosis, direct and maternal genetic effects on body traits in a complete diallel cross involving four strains of red tilapia Oreochromis spp
(2009)Type: Conference PaperHeterosis, direct additive genetic and general reciprocal effects were estimated from a complete diallel cross involving four strains of red tilapia Oreochromis spp from Malaysia, Stirling, Taiwan and Thailand. The mating ... -
Importance and implementation of simple and advance selective breeding programs for aquaculture species in developing countries
(2006)Type: Conference PaperAquaculture is predicted to play a major and ever increasing role in meeting human needs for protein. In terrestrial animal and plant species genetic improvement programs have made a substantial contribution to productivity ... -
Inbreeding and effective population size in a coho salmon (Oncorhynchus kisutch) breeding nucleus in Chile
(2013)Type: Journal ArticleA commercial breeding nucleus of coho salmon (Oncorhynchus kisutch) was established in Chile in 1997. This nucleus consists of two independent populations corresponding to different year-classes (even and odd, depending ... -
Indirect genetic effects and inbreeding: Consequences of BLUP selection for socially affected traits on rate of inbreeding
(2014)Type: Journal ArticleSocial interactions often occur among living organisms, including aquatic animals. There is empirical evidence showing that social interactions may genetically affect phenotypes of individuals and their group mates. In ... -
Investment Appraisal of Genetic Improvement Programs in Nile tilapia (Oreochromis Niloticus)
(2007)Type: Journal ArticleThe 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 ... -
Mass selection for increased body weight at harvest over five generations in silver barb, Puntius gonionotus
(2006)Type: Conference PaperSilver barb (Puntius gonionotus Bleeker 1850) is an Asian carp that is popular as a food fish. It is distributed throughout Thailand in rivers, canals, reservoirs and swamps. It is also cultured in ponds and paddy fields. ... -
Performance of the Genetically Improved Farmed Tilapia (GIFT) strain over ten generations of selection in Malaysia
(2014)Type: Journal ArticleA selection programme using Best Linear Unbiased Prediction (BLUP) method for the estimation of genetic merit was implemented by the Department of Fisheries Malaysia (DOF) in collaboration with the WorldFish Centre. This ... -
Performances of Nile Tilapia (Oreochromis niloticus) selected for high growth rate after three generations
(2007)Type: Journal ArticleA selective breeding study for live weight based on a fully pedigreed population of GIFT (Genetically Improved Farmed Tilapia) strain was carried out at the Aquaculture Extension Centre, Department of Fisheries, Jitra, ... -
Perspectives from Agriculture: Advances in livestock breeding-Implications for aquaculture genetics
(2006)Type: Journal ArticleIn this paper we present livestock breeding developments that could be taken into consideration in the genetic improvement of farmed aquaculture species, especially in freshwater fish. Firstly, the current breeding objective ... -
Phenotypic and genetic parameters for body measurements, reproductive traits and gut length of Nile tilapia (Oreochromis niloticus) selected for growth in low-input earthen ponds
(2007)Type: Journal ArticleIn this study we present estimates of phenotypic and genetic parameters for body size measurements, reproductive traits, and gut length for Nile tilapia (Oreochromis niloticus) selected for growth in fertilized earthen ... -
Potential applications of reproductive and molecular genetic technologies in the selective breeding of aquaculture species
(2006)Type: Conference PaperThe use of reproductive and genetic technologies can increase the efficiency of selective breeding programs for aquaculture species. Four technologies are considered, namely: marker-assisted selection, DNA fingerprinting, ...
