Browsing Sustainable aquaculture by Author "Mekkawy, W."
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Agonistic behaviour and feed efficiency in juvenile Nile tilapia Oreochromis niloticus
(2019)Type: Journal ArticleThe main hypothesis of the present study was that an aggressive and dominant fish would eat more feed and would be more efficient. To test this hypothesis, estimations of the relationships between agonistic behaviour, ... -
Breeding for robustness: Investigating the genotype-by-environment interaction and micro-environmental sensitivity of Genetically Improved Farmed Tilapia (Oreochromis niloticus)
(2018)Type: Journal ArticleThe objectives of this study were (i) to quantify the degree of G x E by assessing the growth performance of Genetically Improved Farmed Tilapia (GIFT) across three countries (Malaysia, India and China) and (ii) to quantify ... -
Early selection to enhance genetic gain in a rohu (Labeo rohita) genetic improvement program
(2022)Type: Journal ArticleMultiple-stage selection can, in certain circumstances, be adopted to enhance genetic gain in genetic improvement programs while avoiding the cost of assessing and maintaining all individuals for extended periods. The ... -
Fish trait preferences: a review of existing knowledge and implications for breeding programmes
(2019)Type: Journal ArticleContinued growth of the aquaculture sector will rely on the availability of fish with traits that respond to the needs and preferences of these users along the value chain. Such trait responsiveness requires that fish ... -
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 ... -
Gender-differentiated preferences regarding rohu carp (Labeo rohita) in Bangladesh: A case study
(2021)Type: Internal ReportThe focus of this case study is the rohu carp genetic improvement program based in Bangladesh. The work forms part of the Sustainable Aquaculture Program of WorldFish and the CGIAR Research Program on Fish Agri-Food Systems ... -
Genetic evaluation of growth and survival at 6 weeks old fry of Egyptian Nile Tilapia (Oreochromis niloticus) between improved Abbassa and commercial Manzala strains in a diallel crossing
(2016)Type: Journal ArticleThe main objectives of this study were to evaluate growth performance and estimate line crossing parameters of improved Abbassa tilapia strain and a commerciall Manzala strain within a complete diallel cross at 6 weeks old ... -
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 relationships among founders of a silver carp (Hypophthalmichthys molitrix) genetic improvement program in Bangladesh
Type: Journal ArticleSilver carp (Hypophthalmichthys molitrix) is an important aquaculture species in Bangladesh and globally. Multiple introductions have been made of this exotic species to Bangladesh since 1969. Accordingly, the genetic ... -
Genotype by environment interaction and genetic heterogeneity of environmental variance of body weight at harvest in genetically improved farmed tilapia (Oreochromis niloticus) reared in 3 different countries
(2016)Type: Journal ArticleEstablishing breeding programs that improve farmed fish performance across multiple environments is crucial in a globalized aquaculture market. The main objectives of the current study were to assess the growth performance ... -
Genotype-by-culture-system interaction in catla and silver carp: Monoculture and biculture
(2022)Type: Journal ArticleCatla (Catla catla) and silver carp (Hypophthalmichthys molitrix) are globally significant aquaculture species, primarily grown in polyculture. The objectives of the current study were to i) quantify genetic differences ... -
Growth performance of three strains of Nile tilapia (Oreochromis niloticus) on four different feeds in Western and Central Kenya
(2021)Type: Journal ArticleThe growth performance of three commercially available strains of Nile tilapia (Oreochromis niloticus) fed one of four different commercially available feeds during nursery and grow-out was assessed in Kenya. Each of the ... -
Measuring individual feed efficiency and its correlations with performance traits in Nile tilapia, Oreochromis niloticus
(2017)Type: Journal ArticleEstimating individual feed intake of fish held in groups has long been a challenge precluding precise knowledge of the individual variation of feed efficiency (FE) in fish. In this study, counts of the number of feed pellets ... -
On-farm participatory evaluation of feeding approaches used by farmers for tilapia (Oreochromis macrochir) production in northern Zambia
(2021)Type: Journal ArticleThis paper reports the first benchmarking of smallholder tilapia farming practices in rural northern Zambia, measuring fish growth, feed utilization and water quality parameters, using a participatory action research ... -
Preferences for rohu fish (L. rohita) traits of women and men from farming households in Bangladesh and India
(2021)Type: Journal ArticleAs selective breeding programs are time-consuming and expensive, it is critical that clients preferred traits are accurately identified. This is important to achieve value for money and adoption of selectively improved ... -
Quantifying the genetic parameters of feed efficiency in juvenile Nile tilapia Oreochromis niloticus
(2018)Type: Journal ArticleImproving feed efficiency in fish is crucial at the economic, social and environmental levels with respect to developing a more sustainable aquaculture. The important contribution of genetic improvement to achieve this ... -
Sibship assignment to the founders of a Bangladeshi Catla catla breeding population
(2019)Type: Journal ArticleIn terms of quantity produced, Catla catla is the sixth most important finfish aquaculture species produced globally in 2015. It is primarily grown in South Asia, often on a small scale in polyculture with other species. ... -
Single Nucleotide Polymorphisms (SNPs) reveal sibship among founders of a Bangladeshi Rohu (Labeo rohita) breeding population
Type: Journal ArticleRohu (Labeo rohita) is a significant freshwater aquaculture species with approximately 1.8 Mt produced annually. Fin clips obtained from the founders of a newly established Bangladesh-based breeding population (∼140 fish ... -
Strain comparisons in aquaculture species: a manual
(2013)Type: ManualWhen different strains or breeds of a particular species are available, the best choice is seldom immediately obvious for producers. Scientists are also interested in the relative performance of different strains because ...
