Heritability estimates and response to selection for growth of Nile tilapia (Oreochromis niloticus) in low-input earthen ponds

Charo‐Karisa, Harrison; Komen, Hans; Rezk, Mahmoud; Ponzoni, R. W.; Arendonk, J.A.M. van; Bovenhuis, H.

doi:10.1016/j.aquaculture.2006.07.007

Cited by 95 publications

(57 citation statements)

References 36 publications

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“…The correct identification of genetically superior individuals is, therefore, crucial and requires knowledge about the genetic control of the traits under selection. Parameters, such as heritability, have been widely investigated for production traits in tilapia (Eknath & Acosta, 1998;Ponzoni et al, 2005;Rutten et al, 2005;Charo-Karisa et al, 2006;Khaw et al, 2008). Mortality rate is also an important trait, and it can have direct implications on farm productivity.…”

Section: Introductionmentioning

confidence: 99%

“…The survival of tilapia is affected by a great variety of factors, such as age (Wagner et al, 2004), cultivation density and water quality (Yi & Lin, 2001), and temperature and diet (Atwood et al, 2003). Few experiments have been carried out to study the genetic control of survival in tilapia (Chiayvareesajja et al, 1999;Charo-Karisa et al, 2006;Rezk et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Bayesian genetic parameters for body weight and survival of Nile tilapia farmed in Brazil

Santos

Ribeiro

Vargas

et al. 2011

Pesq. agropec. bras.

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-The objective of this study was to estimate genetic parameters for survival and weight of Nile tilapia (Oreochromis niloticus), farmed in cages and ponds in Brazil, and to predict genetic gain under different scenarios. Survival was recorded as a binary response (dead or alive), during harvest time in the 2008 grow-out period. Genetic parameters were estimated using a Bayesian mixed linear-threshold animal model via Gibbs sampling. The breeding population consisted of 2,912 individual fish, which were analyzed together with the pedigree of 5,394 fish. The heritabilities estimates, with 95% posterior credible intervals, for tagging weight, harvest weight and survival were 0.17 (0.09-0.27), 0.21 (0.12-0.32) and 0.32 (0.22-0.44), respectively. Credible intervals show a 95% probability that the true genetic correlations were in a favourable direction. The selection for weight has a positive impact on survival. Estimated genetic gain was high when selecting for harvest weight (5.07%), and indirect gain for tagging weight (2.17%) and survival (2.03%) were also considerable.Index terms: Oreochromis niloticus, correlation, fish genetic improvement, Gibbs sampling, GIFT strain, heritability. Parâmetros genéticos bayesianos para peso corporal e sobrevivência de tilápias-do-nilo cultivadas no BrasilResumo -O objetivo deste trabalho foi estimar parâmetros genéticos para a sobrevivência e peso de tilápias-do-nilo (Oreochromis niloticus), cultivadas em tanques-rede e viveiro de terra no Brasil, e predizer o ganho genético sob diferentes cenários. Mediu-se a sobrevivência como uma característica binária (peixe vivo ou morto), no período de crescimento de 2008 até a despesca. Os paramêtros genéticos foram estimados pelo modelo animal limiar-linear em análise bayesiana, pela amostragem de Gibbs. A população avaliada foi de 2.912 peixes individuais, que foram analisados juntamente com o pedigree de 5.394 peixes. As herdabilidades, com intervalos de credibilidade de 95%, obtidas para peso à identificação, peso à despesca e sobrevivência foram 0,17 (0,09-0,27), 0,21 (0,12-0,32) e 0,32 (0,22-0,44), respectivamente. Intervalos de credibilidade mostram 95% de probabilidade de que as verdadeiras correlações genéticas estejam em uma direção favorável. A seleção para peso tem impacto positivo na sobrevivência. O ganho genético estimado foi alto para a seleção quanto ao peso à despesca (5,07%), e o ganho indireto para o peso à identificação (2,17%) e à sobrevivência (2,03%) também foram consideráveis.Termos para indexação: Oreochromis niloticus, correlação, melhoramento genético de peixes, amostragem de Gibbs, linhagem GIFT, herdabilidade.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bayesian genetic parameters for body weight and survival of Nile tilapia farmed in Brazil

Santos

Ribeiro

Vargas

et al. 2011

Pesq. agropec. bras.

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“…Nilai rataan ini termasuk kategori tinggi bila dibandingkan dengan penelitian Luan et al (2008) pada ikan nila (Oreochromis niloticus) yang menunjukkan estimasi nilai heritabilitas pada karakter bobot yang dipelihara di perairan payau sebesar 0,19±0,06 namun masih lebih kecil bila dibandingkan dengan pada air tawar sebesar 0,24±0,04. Menurut Charo-Karisa et al (2006), tidak banyak informasi mengenai estimasi heritabilitas bobot ikan nila di air payau yang bisa digunakan sebagai referensi pembanding meskipun sejumlah penelitian budidaya ikan nila di lingkungan air payau dan laut telah dilakukan. Oleh karena itu, diskusi mengenai heritabilitas ikan nila terutama didasarkan pada informasi yang tersedia di lingkungan air tawar.…”

Section: Rat Aan ( Avera Ge )unclassified

“…Charo- Karisa et al (2006) menyatakan bahwa ikan nila yang berumur 289-318 hari mempunyai nilai heritabilitas bobot yang mencapai 0,38-0,6 dan 0,34 untuk ikan nila yang berumur tujuh bulan (Ponzoni et al, 2005). Adapun Yuniarti et al (2009) Nilai heritabilitas yang tinggi sangat berperan dalam meningkatkan efektivitas seleksi.…”

Section: Rat Aan ( Avera Ge )unclassified

ESTIMASI HERITABILITAS DAN RESPONS SELEKSI IKAN NILA MERAH (Oreochromis spp.) PADA TAMBAK BERSALINITAS

Robisalmi

Dewi

2014

Jurnal Riset Akuakultur

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ABSTRAKSalah satu jenis ikan nila yang memiliki potensi nilai ekonomis yang tinggi dan dapat dibudidayakan di air tawar maupun di air payau adalah ikan nila merah. Dalam rangka pengembangannya diperlukan upaya untuk meningkatkan kualitas genetik di antaranya dengan cara seleksi. Kegiatan ini bertujuan untuk mengetahui estimasi nilai heritabilitas dan respons seleksi populasi jantan dan betina F-0 ikan nila merah hasil seleksi. Pemijahan dilakukan secara full-sib dengan perbandingan jantan dan betina 1:1 dan menghasilkan 10 famili dari 50 famili yang dibentuk. Pembesaran benih dilakukan di tambak bersalinitas 30 ppt menggunakan waring berukuran 3 m x 5 m x 1,5 m dengan padat tebar 10 ekor/m 2 . Seleksi calon induk pada populasi jantan dan betina ikan nila merah dilakukan setelah mencapai bobot 200-300 g. Cut off seleksi ditentukan pada bobot berkisar 225-354 g (jantan) dan 201-258 g (betina). Parameter yang diamati meliputi koefisien keragaman panjang dan bobot, diferensial seleksi, estimasi nilai heritabilitas, dan respons seleksi. Hasil penelitian menunjukkan koefisien keragaman karakter panjang pada populasi jantan berkisar dari 7,89%-11,18% dan bobot 21,22%-34,12% dengan diferensial seleksi 45,87-115,18 g; sedangkan populasi betina sebesar 6,08%-13,22% dan 16,39%-31,55%; serta 46,12-71,67 g. Hasil analisis estimasi nilai heritabilitas (dalam arti luas) pada karakter bobot ikan nila merah jantan 0,47±0,19 dan betina 0,19±0,11. Adapun prediksi respons seleksi yang akan diperoleh adalah 33,06 g (jantan) dan 11,65 g (betina). KATA KUNCI: heritabilitas, respons seleksi, ikan nila merah, payau ABSTRACT:Heritability estimates and response to selection of red tilapia in brackishwater pond.

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“…Tilapias are among the most important species of freshwater fish in tropical climate used for the production (Charo-Karisa et al, 2006). The intensification of production systems has resulted in a rapid expansion in the cultivation of tilapia and new strains have been introduced in Brazil and worldwide.…”

Section: Introductionmentioning

confidence: 99%

<b>Influence of rearing temperature on muscle growth and adipose tissue in Nile tilapia (<i>Oreochromis niloticus</i>) strains

Salomão

Santos

Mareco

2017

Acta Sci. Anim. Sci.

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ABSTRACT. This study aimed to evaluate the effect of temperature on the tissue growth of Red, GIFT and Supreme tilapia strains. Fingerlings of approximately 1.4 g from male populations were reared for a period of 60 days, in three recirculating systems, each system containing 6 water tanks of 0.5 m³, at three temperatures (22, 28 and 30ºC). Ten fish of each recirculation system and each temperature studied were sampled. Fishes have been anesthetized, euthanized and weighed. The samplings have been done from the dorsal musculature, caudal, visceral and ventral subcutaneous adipose tissue. Histological sections were prepared and evaluated to determine the diameter of the cells. The experimental design was completely randomized factorial 3 X 3 (strain X temperature). Analysis of variance was performed and means were compared. Higher weights were found for fish reared at 30°C (56.23 g) compared to those grown at 28 (42.12 g) or 22°C (10.52 g). The cooled water temperature (22°C) may have contributed to the hypertrophy of white muscle fibers and visceral adipocytes from tilapia, compared to 28 or 30ºC. Red Tilapia, GIFT and Supreme strains show differences in muscle growth and adipose tissues in response to temperature of cultivation.Keywords: adipocytes, white fibers, red fibers, GIFT strain, red strain, supreme strain.Influência da temperatura de cultivo no crescimento muscular e do tecido adiposo em linhagens de tilápia do Nilo (Oreochromis niloticus) RESUMO. Objetivou-se avaliar o efeito da temperatura no crescimento dos tecidos de tilápias do Nilo das linhagens Vermelha, GIFT e Supreme. Alevinos de aproximadamente 1,4 g, oriundos de populações de machos revertidos, foram mantidos em três sistemas de recirculação. Cada sistema contendo contém seis caixas d'água de 0,5 m³, em três temperaturas (22, 28 e 30ºC). Foram coletados dez peixes de cada tratamento. Os peixes foram insensibilizados, eutanasiados e pesados. Foram realizadas amostragens das regiões da musculatura dorsal, do pedúnculo caudal, do tecido adiposo subcutâneo ventral e visceral. Lâminas histológicas foram confeccionadas e avaliadas para determinar o diâmetro das células. O delineamento experimental foi inteiramente casualizado em esquema fatorial 3 X 3 (linhagem X temperatura). A análise de variância foi realizada e as médias foram comparadas. Maiores pesos foram encontrados para os peixes cultivados a 30ºC (56,23 g), quando comparados àqueles cultivados a 28 (42,12 g) ou 22ºC (10,52 g). A temperatura resfriada da água (22ºC) pode ter contribuído para a hipertrofia das fibras musculares brancas e dos adipócitos viscerais das tilápias, quando comparada a 28 ou 30ºC. As linhagens de tilápia Vermelha, GIFT e Supreme apresentam diferenças de crescimento do tecido muscular e adiposo em resposta à temperatura de cultivo.Palavras-chave: adipócitos, fibras brancas, fibras vermelhas, linhagem GIFT, linhagem vermelha, linhagem supreme.

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Heritability estimates and response to selection for growth of Nile tilapia (Oreochromis niloticus) in low-input earthen ponds

Cited by 95 publications

References 36 publications

Bayesian genetic parameters for body weight and survival of Nile tilapia farmed in Brazil

Bayesian genetic parameters for body weight and survival of Nile tilapia farmed in Brazil

ESTIMASI HERITABILITAS DAN RESPONS SELEKSI IKAN NILA MERAH (Oreochromis spp.) PADA TAMBAK BERSALINITAS

<b>Influence of rearing temperature on muscle growth and adipose tissue in Nile tilapia (<i>Oreochromis niloticus</i>) strains

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