Browsing Sustainable aquaculture by Author "Khaw, H.L."
Now showing items 1-20 of 38
-
Breeding program requirements in developing countries may differ depending on circumstances
(2007)Type: Book ChapterAquaculture in developing countries is largely based on unimproved fish strains. There is ample evidence indicating the potential of genetic improvement programs and a range of selection methods may be used. Examples of ... -
Can sexual dimorphism and body shape be altered in Nile tilapia (Oreochromis niloticus) by genetic means?
(2007)Type: Journal ArticleThe objective of this study was to estimate genetic parameters in GIFT (Genetically Improved Farmed Tilapia), especially focusing on the genetic correlation between trait expressions in both sexes and among measurements ... -
Considerations about effective dissemination of improved fish strains
(2012)Type: Working PaperAquaculture production systems in developing countries are largely based on the use of unimproved species and strains. As knowledge and experience are accumulated in relation to the management, feeding and animal health ... -
Considerations about effective dissemination of improved fish strains (in Arabic)
(2014)Type: Working PaperAquaculture production systems in developing countries are largely based on the use of unimproved species and strains. As knowledge and experience are accumulated in relation to the management, feeding and animal health ... -
Correlated response in fillet weight and yield to selection for increased harvest weight in genetically improved farmed tilapia (GIFT strain), Oreochromis niloticus
(2010)Type: Journal ArticleA data set consisting of 5532 slaughter records collected over three generations from a selection program for increased harvest body weight in the GIFT strain of Nile tilapia (Oreochromis niloticus) was used to estimate ... -
Estimation of genetic change in the GIFT strain by comparing contemporary progeny produced by males born in 1991 or 2003
(2007)Type: Conference PaperDuring the development of the GIFT (Genetically Improved Farmed Tilapia) strain in Philippines sperm was frozen from a sample of males from founder stocks and subsequent generations. In this paper a comparison of progeny ... -
Estimation of genetic change in the GIFT strain of Nile tilapia (Oreochromis niloticus) by comparing contemporary progeny produced by males born in 1991 or in 2003
(2008)Type: Journal ArticleGenetic change in the Genetically Improved Farmed Tilapia (GIFT) Nile tilapia (Oreochromis niloticus) was estimated by comparing the performance of the progeny produced from cryopreserved spermatozoa from the base population ... -
Flesh characteristics: estimation of genetic parameters and correlated responses to selection for growth rate in the GIFT strain
(2014)Type: Journal ArticleGenetically improved farmed tilapia (GIFT) has undergone ten generations of selection for harvest body weight in Malaysia, but there have been no reports on genetic parameters for flesh characteristics for this strain. In ... -
Fundamental considerations about design and sample size in strain comparisons and their implications
(2011)Type: Journal ArticleWell-known formulae for the calculation of the necessary number of animals in strain comparisons are presented. Their use is illustrated with an example with fish. Use of the formulae in the planning and design of strain ... -
Genetic analysis of Nile tilapia (Oreochromis niloticus) selection line reared in two input environments
(2009)Type: Journal ArticleAscertaining the appropriate selection environment for Nile tilapia (Oreochromis niloticus) in Africa is a critical issue. Two data sets derived from two selection lines originating from a common base population were ... -
Genetic analysis of the GIFT strain (Nile Tilapia, Oreochromis niloticus) in Malaysia
(2010)Type: Conference PaperThe Genetically Improved Farmed Tilapia (GIFT) strain is well known worldwide because of its high performance. A first phase of the project ended in 1997 after five generations of selection. In 2002, the GIFT population ... -
Genetic and non-genetic indirect effects for harvest weight in the GIFT strain of Nile tilapia (Oreochromis niloticus)
(2016)Type: Journal ArticleThe main objective of this study was to quantify the heritable variation for growth rate of GIFT, and the contribution of IGEs to this heritable variation. Here we describe the experiment conducted for this purpose, and ... -
Genetic evaluation of a complete diallel cross involving three populations of freshwater prawn (Macrobrachium rosenbergii) from different geographical regions of India
(2011)Type: Journal ArticleEstimates of additive genetic, reciprocal and average heterosis effects were obtained from a three by three complete diallelcross experiment for giant freshwater prawn Macrobrachium rosenbergii. The data were generated in ... -
Genetic improvement and dissemination of rohu (labeo rohita, Ham.) in India
(2007)Type: Book ChapterExperts carried out selective breeding of Rohu carp for greater harvest weight and yielded an average of 17% genetic gain per generation in 5 generations of selection. -
Genetic improvement of Nile tilapia (Oreochromis niloticus) with special reference to the work conducted by the WorldFish Center with the GIFT strain
(2011)Type: Journal ArticleWe mainly (but not exclusively) draw on research and development work carried out by The WorldFish Center (WorldFish). We review in detail the current state of development of a selection program that has had a main focus ... -
Genetic improvement of Nile tilapia (Oreochromis Niloticus): present and future
(2008)Type: Conference PaperWe mainly (but not exclusively) draw upon research and development work carried out by The WorldFish Center (WorldFish). We review the current state of development of selection programs that have had a main focus on growth ... -
Genetic improvement programs for aquaculture species in developing countries: prospects and challenges
(2009)Type: Conference PaperAquaculture in developing countries is largely based on unimproved fish strains. There is ample evidence indicating the potential of genetic improvement programs and a range of selection methods may be used. Examples of ... -
Genetic parameters and correlated responses in female reproductive traits in the GIFT strain
(2016)Type: Journal ArticleThe aim of this study was to examine genetic variation in reproductive traits and to estimate correlated responses in such traits to selection for high growth rate in the GIFT strain of Nile tilapia (Oreochromis niloticus). -
Genetic parameters for survival during the grow-out period in the GIFT strain of Nile tilapia (Oreochromis niloticus) and correlated response to selection for harvest weight
(2015)Type: Journal ArticleThe aims of this study were the estimation of genetic parameters for survival rate from tagging until harvest and the evaluation of the correlated response in survival rate to selection for harvest weight in the genetically ... -
Genetic parameters for uniformity of harvest weight and body size traits in the GIFT strain of Nile tilapia
(2016)Type: Journal ArticleAnimal breeding programs have been very successful in improving the mean levels of traits through selection. However, in recent decades, reducing the variability of trait levels between individuals has become a highly ...
