Effects of genotype × environment interaction on the estimation of genetic parameters and gains in Nile tilapia

Araújo, Filipe Chagas Teodózio de; Oliveira, Carlos Antônio Lopes de; Campos, Eric Costa; Yoshida, Grazyella Massako; Lewandowski, Vanessa; Todesco, Humberto; Nguyen, Nguyen Hong; Ribeiro, Ricardo Pereira

doi:10.1007/s13353-020-00576-2

Cited by 5 publications

(3 citation statements)

References 25 publications

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“…This, however, is contrary to findings by de Araújo et al. (2020), where there was a strong G*E effects on three generations of tilapia cultured in ponds and cages. Other studies where improved Nile tilapia has demonstrated superior performance include (Dee et al., 2022; Ridha Mohamed, 2006).…”

Section: Introductioncontrasting

confidence: 99%

On‐farm growth performance of different strains of tilapia, Oreochromis niloticus reared in earthen ponds

Abwao

Kyule

Jung'a

et al. 2023

Aquaculture Fish & Fisheries

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The growth of aquaculture sector in Kenya has been anchored on farmed Nile tilapia Oreochromis niloticus. Different strains of the species exist in Kenya with unknown quality due to lack of stock improvement programmes coupled by variations in breeding and management practices in different hatcheries. The seeds supplied to farmers have not exhibited good performance and resilience to changing climate. There is need to validate the quality of strains supplied to fish farmers in Kenya. This study sought to compare the growth performance of three strains of farmed Nile tilapia; Sagana strain (SAG‐F8) produced through selective breeding, super YY strain (KAM‐YY) from Kamuthanga fish farm and the local strain (LOC‐T) obtained from Siaya County. The fish were stocked in fertilised earthen ponds measuring 300 m2 in triplicates at 3 fish/m2. The fish were fed on 35% crude protein diet for 180 days at Bukani Aquapark located in Busia County, Kenya. There was no significant difference in mean weight gain (MWG) between SAG‐F8 and LOC‐T strain exhibiting 159.786 ± 6.76 g and 158.623 ± 4.67 g, respectively. However, under similar conditions, the KAM‐YY strain had a significantly lower MWG (131.74 ± 4.75 g) compared to the two strains. Food conversion ratio (FCR), specific growth rate (SGR) did not demonstrate any significant difference among the different strains. The body protein content in the SAG‐F8 fish strain was higher (65.40 ± 0.20%) followed by LOC‐T strain (61.23 ± 2.34%) and lastly KAM‐YY strain had the lowest (60.37 ± 0.89%). In this study, the impact of genetic improvement has been demonstrated to influence growth and feed efficiency as well as body composition. These improved strains will substantially increase fish production and productivity, hence, a positive impact on the fish farmers' livelihoods when supplied to the farmers and seed multipliers.

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Section: Introductioncontrasting

confidence: 99%

On‐farm growth performance of different strains of tilapia, Oreochromis niloticus reared in earthen ponds

Abwao

Kyule

Jung'a

et al. 2023

Aquaculture Fish & Fisheries

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“…These environmental factors can impact on heritability estimates of economically important traits. Generally, the genotype by environment interaction is evidenced in fish farming (Araujo et al 2020), increasing genetic distance and variability, especially in species such as Nile tilapia (Oreochromis niloticus), which survive in challenging environments (Miao and Wang 2020).…”

Section: Ul Sementioning

confidence: 99%

Meta-analysis of genetic parameters for productive traits in Nile tilapia (Oreochromis niloticus)

D'suze,

Lima,

Paiva

et al. 2024

CZECH J ANIM SCI

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The advances in the production traits of Oreochromis niloticus are due to the development of genetically superior broodstock animals. Understanding the genetic variability of fish stocks is crucial to any animal breeding program. The aim of this study was to perform a meta-analysis of genetic parameters that considers the variability between studies for economically important traits in the Nile tilapia (Oreochromis niloticus) production. The final dataset from literature review contained 226 estimates of heritability and 53 estimates of genetic correlation across 37 peer-reviewed articles published between 2002 and 2022. Weighted genetic parameter estimates were obtained by fitting a random effect model for all traits studied. Heterogeneity across studies were assessed using the Q statistic and I 2 index. Heritability estimates ranged from low to moderate magnitude, indicating that a greater response to selection is expected for body length (0.37), body weight (0.29), body width (0.28), and daily weight gain (0.28), compared to the other traits, body height (0.25) and fillet yield (0.19). Genetic correlations ranged from moderate to high magnitude (0.47 to 0.94), which suggests that part of expression of traits is regulated by the same gene groups. The meta-analysis study provided reliable genetic parameter estimates and these findings may be served as the baseline reference for new Nile tilapia (Oreochromis niloticus) breeding programs.

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“…Reproductive potential, uniformity of harvest weight, feed efficiency, body shape and predicted fillet yield by two-and threedimensional image analysis (Cardoso et al, 2021), meat quality, skin quality for biological dressings use, behaviour, and welfare are the target traits for the present breeding program. In addition, studies exploring the genetic variation in sexual dimorphism may be important for the commercial value of the animals, in addition to the genotype and environmental interactions in different production systems (Araújo et al, 2020).…”

Section: Future Directionsmentioning

confidence: 99%

A breeding program for Nile tilapia in Brazil: Results from nine generations of selection to increase the growth rate in cages

Yoshida

Oliveira

Campos

et al. 2021

J Animal Breeding Genetics

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Genetic improvement has the potential to improve the productivity of a trait under selection; furthermore, the benefits are permanent, sustainable, and cumulative over generations (Gjedrem, 2012). Quantitative genetics and selective breeding are powerful tools to increase commercial production and have achieved substantial productivity improvements for fishes and shellfishes (Gjedrem & Rye, 2018). Genetic improvement in the animals can suggest an increase in the farm profit, and when breeding is highly specialized, the genetic progress is not necessarily reflected in the market price (Janssen et al., 2018). In this context, based on a simulated Nile

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Effects of genotype × environment interaction on the estimation of genetic parameters and gains in Nile tilapia

Cited by 5 publications

References 25 publications

On‐farm growth performance of different strains of tilapia, Oreochromis niloticus reared in earthen ponds

On‐farm growth performance of different strains of tilapia, Oreochromis niloticus reared in earthen ponds

Meta-analysis of genetic parameters for productive traits in Nile tilapia (Oreochromis niloticus)

A breeding program for Nile tilapia in Brazil: Results from nine generations of selection to increase the growth rate in cages

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