Genotype × country interaction for weaning weight in the Angus populations of Brazil and Uruguay

Espasandin, A. C.; Urioste, J. I.; Campos, Leonardo Talavera; Alencar, M. M. de

doi:10.1590/s1516-35982011000300014

Cited by 9 publications

(10 citation statements)

References 15 publications

(15 reference statements)

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“…These results are fairly consistent with the present findings. In comparison to present results, relatively less interaction effects were reported by Raidan et al (2015) for final weight with heritability values of 0.44 and 0.50, respectively for feedlot-raised and pasture-raised Nellore bulls while Espasandin et al (2011) reported similar direct heritability (0.35 and 0.34) for weaning weight in Asian J. Anim.…”

Section: Heritability For Growth Traitscontrasting

confidence: 95%

“…Similarly, Bresolin et al (2015) reported that the genetic correlation for adjusted 205 days weight of Nellore bulls varied from 0.52-0.84 among three regions and Bradfield et al (1997) reported that the genetic correlation was 0.63 for weaning weight in Santa Gertrudis cattle between two production environments. Moreover, Espasandin et al (2011) found that the estimated genetic correlation for the direct additive genetic effect for weaning weight between two countries, Brazil and Uruguay, was 0.77. Theses results suggested that the best breeding bulls in one region or production system are not the same as in another region or production system.…”

Section: Estimates Of G×e For Growth Traitsmentioning

confidence: 99%

“…Earlier studies have reported the existence of significant G×E in growth traits between production systems (Bradfield et al, 1997;Amelie, 2007;Assenza et al, 2010;Raidan et al, 2015), among regions (Van Niekerk et al, 2004;Guidolin et al, 2012;Bresolin et al, 2015), between countries (Espasandin et al, 2011) and between seasons of birth (De Alencar et al, 2005;Williams et al, 2012). For example, Assenza et al (2010) found that the genetic correlations between each trait expressed in an intensive fattening system and the same trait expressed in a pasture spanned from 0.31-0.93 while Raidan et al (2015) reported genetic correlation to be 0.75 for final weight between nellore cattle reared in feedlot and on pasture.…”

Section: Introductionmentioning

confidence: 98%

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Genotype×Environment Interactions in Growth Performance of Brahman Crossbred Cattle in Bangladesh

Rashid¹,

Hoque²,

Huque³

et al. 2015

Asian J. of Animal Sciences

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The objective was to evaluate the effects of genotype×environment interaction on growth traits of Brahman crossbred cattle. The animals were reared in two environments viz., Central Cattle Breeding Station (on-station) and farmer's herd (on-farm) where management system was respectively intensive and semi-intensive in nature. Birth weight was very similar across environments. Average body weight at different ages was greater in on-station herd than in on-farm herd (p<0.01). Body weight was 23.0, 25.4, 41.5 and 27.5 kg greater at 6, 9, 12 and 18 month in on-station herd than in the on-farm herd, respectively. Significant interaction between sire×environment in most of the growth traits (p<0.001) was observed. Heritability estimates for growth traits were greater in on-station herd (ranged from 0.29-0.47) than in on-farm herd (ranged from 0.48-0.50). Genetic correlations of the same growth trait between two environments showed a decreasing tendency with the increase in age of animal (from 0.74±0.05 at 3 months to 0.57±0.05 at 24 months). These results demonstrate that effects of G×E in Brahman crossbred cattle are large between two types of management system indicating that breeding bull selection and use should be carried out within environment basis.

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Section: Heritability For Growth Traitscontrasting

confidence: 95%

Section: Estimates Of G×e For Growth Traitsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Genotype×Environment Interactions in Growth Performance of Brahman Crossbred Cattle in Bangladesh

Rashid¹,

Hoque²,

Huque³

et al. 2015

Asian J. of Animal Sciences

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“…As médias das distribuições posteriores das correlações genéticas variaram de 0,54 a 0,78, para P210, e de 0,55 a 0,75 para GND. Da mesma forma que no presente estudo, evidências de interação GxA para características pré-desmama, em diversas raças bovinas, foram relatadas em outros trabalhos (Fridrich et al, 2005;Mascioli et al, 2006;Lopes et al, 2008;Zapata et al, 2010;Espasandin et al, 2011).…”

Section: Resultsunclassified

Interação genótipo x ambiente e características pré-desmama em animais da raça Simental em duas estações de nascimento

Diaz

Neto

Marques

et al. 2011

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o efeito da interação genótipo x ambiente (GxA), nas características peso à desmama e ganho de peso do nascimento à desmama, em machos e fêmeas da raça Simental, nascidos nas estações chuvosa e seca. Foram avaliados 20 mil animais, aos 210 dias de idade. Realizou-se uma análise multicaracterística, que considerou como distinta a mesma característica nos diferentes grupos ambientais, e uma análise unicaracterística, que considerou cada característica como a mesma em todos os grupos ambientais. A interação GxA foi avaliada por meio da correlação genética (r g ). As interações foram consideradas importantes quando os valores de r g ficaram abaixo de 0,80. As distribuições posteriores das estimativas de herdabilidades mostraram ausência de heterogeneidade de variâncias entre os sexos, entretanto houve interação GxA entre os grupos ambientais. Observaram-se valores de correlação genética de 0,54 a 0,78 e 0,55 a 0,75 para peso à desmama e ganho de peso do nascimento à desmama, respectivamente. As seleções, baseadas tanto na análise unicaracterística quanto na multicaracterística, não mostraram diferenças significativas quanto ao ganho genético dos animais. Há efeito das estações de nascimento nas características avaliadas, em todos os grupos ambientais, e a interação GxA é mais evidente em fêmeas do que em machos.Termos para indexação: correlações genéticas, fêmeas, inferência bayesiana, machos, plasticidade fenotípica. Genotype x environment interaction and pre-weaning traits in Simmental animals in two birth seasonsAbstract -The objective of this study was to evaluate the effect of the genotype x environment (GxE) interaction on weaning weight and weight gain from birth to weaning, in Simmental males and females born in the rainy and dry seasons. Twenty thousand animals were evaluated at 210 days of age. A multitrait analysis was performed, in which the same feature was considered distinct for the different environmental groups; and a single trait analysis was done, in which each trait was considered as the same in all environmental groups. The GxE interaction was assessed by genetic correlation (r g ). The interactions were considered important when r g values were below 0.80. The posterior distributions of heritability estimates showed the absence of heterogeneity of the variances between sexes, although there was GxE interaction between the environmental groups. The observed values of genetic correlation were 0.54 to 0.78 and 0.55 to 0.75 for weight at weaning and weight gain from birth to weaning, respectively. The selection based both on the single trait and on the multitrait analysis showed no significant differences for genetic gain of the animals. Birth seasons have effect on the evaluated traits in all environmental groups, and the GxE interaction is more evident in females than males.

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“…Concepts of stability, efficiency, and performance have been reported repeatedly in the debate concerning genetic improvement strategies and the success of breeding programs in diversifying environments (16,21) . However, the debate still stands on the fact that most breeding programs aim for improvements in productivity (15) , apparently disregarding the fact that the success of these programs require also the consideration of environmental traits (3) .…”

Section: Discussionmentioning

confidence: 99%

Climate Spatialization and Genotype-Environment Interaction Effects on Weaning Weights of Nellore Cattle in Extensive Systems in Tropical Regions of Brazil

Ferreira

Lopes²,

Garcia

et al. 2017

Ciênc. anim. bras.

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Depending on the environmental differences among the regions, the phenotypic expression in beef cattle may significantly vary between the progenies of the same sire, and this is an important rule to identify the best animal. Thus, this study was carried out to spatialize environmental factors that may help to compare and discriminate the states of Maranhão, Pará, and Tocantins and also to check for genotype x environment interaction (G x E interaction) in these regions. The environmental variables analyzed were: maximum temperature; minimum temperature; mean temperature; precipitation; normalized difference vegetation index; relative humidity; altitude; and index of temperature and humidity. Records of weaning weight of Nellore cattle raised on pasture were collected between the years of 1997 and 2007. The dataset was constituted of 21.117 animals, progenies of 161 sires. (Co)variance components and breeding values were estimated using the multiple-trait derivative-free restricted maximum likelihood method. Multivariate spatialization revealed clear distinction among the States of Maranhão, Pará, and Tocantins and allowed the identification of important environmental variables for discrimination. The estimate for direct heritability showed moderate magnitudes and were 0.22±0013, 0.26±0.021, and 0.29±0023, for the 2 Cienc. anim. bras., Goiânia, v.18, 1-13, e-39597, 2017Climate espatialization and genotype-environment interaction effects… States of Maranhão, Pará, and Tocantins, respectively. The estimates of correlation between the breeding values, predicted in different States, as well as the genetic correlation for weaning weight showed that sire ranks changed among the States, indicating G x E interaction. There was a variation of the genetic response of the progeny, depending on the sire and on the State. Thus, the G x E interaction should be accounted for in the genetic evaluation of sires and the performance of Nellore cattle under extensive breeding systems in tropical regions of Brazil.Keywords: animal breeding; canonical correlation; cluster; heritability; Zebu. ResumoA expressão fenotípica pode variar significativamente sob diferenças climáticas e deve ser um motivo de preocupação na identificação e seleção de animais superiores no Brasil. Dessa forma, no presente estudo objetivou-se espacializar fatores ambientais para discriminar os estados do Maranhão (MA), Pará (PA) e Tocantins (TO) e verificar presença de interação genótipo-ambiente (IGA) para peso ao desmame em rebanhos bovinos da raça Nelore localizados nestes Estados. As variáveis ambientais analisadas foram: temperatura máxima; temperatura mínima; temperatura média; precipitação; índice vegetativo normalizado; umidade relativa; altitude e índice de temperatura e umidade. Os registros de peso a desmama de bovinos da raça Nelore criados à pasto foram coletados entre os anos de 1997 e 2007 e o conjunto de dados constituído por 21.117 animais, filhos de 161 touros comuns aos Estados do MA, PA e TO. As estimativas para herdabilidades direta ...

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Genotype × country interaction for weaning weight in the Angus populations of Brazil and Uruguay

Cited by 9 publications

References 15 publications

Genotype×Environment Interactions in Growth Performance of Brahman Crossbred Cattle in Bangladesh

Genotype×Environment Interactions in Growth Performance of Brahman Crossbred Cattle in Bangladesh

Interação genótipo x ambiente e características pré-desmama em animais da raça Simental em duas estações de nascimento

Climate Spatialization and Genotype-Environment Interaction Effects on Weaning Weights of Nellore Cattle in Extensive Systems in Tropical Regions of Brazil

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