Genetic evaluation of carcass composition and fat deposition in Japanese quail

Lotfi, E.; Zerehdaran, Saeed; Azari, M Ahani

doi:10.3382/ps.2011-01570

Cited by 33 publications

(44 citation statements)

References 38 publications

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“…Sex differences for carcass traits in Japanese quail have been reported previously (Lotfi et al, 2011). However, the present results contrast with the results of other studies that have reported higher carcass percentage in males compared with females in Japanese quail (Minvielle et al, 2000;Vali et al, 2005;Saatci et al, 2006;Shokoohmand et al, 2007;Khaldari et al, 2010;Narinc et al, 2010).…”

Section: Discussioncontrasting

confidence: 85%

“…Significant hatch effects on carcass traits have been reported by Peebles et al (1999) and Zerehdaran et al (2004) in broilers and Lotfi et al (2011) in Japanese quail. In all of these studies, the mean values of traits in the first hatch were generally lower than later hatches.…”

Section: Discussionmentioning

confidence: 94%

“…The birds originated from a base population of Japanese quail in the Research Center of GUASNR. More details on base population and pedigree structure are available in the study of Lotfi et al (2011). All birds were kept under the same management conditions.…”

Section: Pre-slaughter Measurementsmentioning

confidence: 99%

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Genetic evaluation of carcass traits in Japanese quail using ultrasonic and morphological measurements

Akbarnejad

Zerehdaran

Hassani

et al. 2015

British Poultry Science

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1. A study was conducted to evaluate the carcass composition of 1083 live birds using ultrasonic and morphological measurements and to estimate the genetic relationship between predicted and dissected carcass composition in Japanese quail. 2. Birds were reared for 35 d, and morphological measurements consisting of the length and width of breast muscle were recorded for all birds using a digital caliper. After slaughtering, the weight and percentage of carcass traits were measured on chilled carcasses. The dimensions of breast muscle were measured in 638 birds with an ultrasound scanner before slaughter at 35 d of age. 3. Genetic parameters from univariate and bivariate analyses were obtained by restricted maximum likelihood using ASREML software. 4. Genetic correlations between body weight at 35 d (BW35) and the percentage of carcass traits were low. Therefore, selection for BW35 may not effectively improve the yield of carcass components in Japanese quail. 5. High genetic correlations between carcass traits and ultrasonic measurements compared to morphological measurements suggest that the ultrasonic technique is a better method to improve breast weight and yield in Japanese quail.

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Section: Discussioncontrasting

confidence: 85%

Section: Discussionmentioning

confidence: 94%

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Genetic evaluation of carcass traits in Japanese quail using ultrasonic and morphological measurements

Akbarnejad

Zerehdaran

Hassani

et al. 2015

British Poultry Science

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“…The heritability estimate for AF (0.80±0.08) was also high, indicating that this trait can respond very well to selection. Chen et al (2008) worked with Beijing-You birds and obtained a heritability estimate of 0.62, close to those reported in the present study, whereas Lotfi et al (2011), while studying quails, found heritability estimates of 0.28±0.06 for AF, different from those obtained here.…”

Section: Resultscontrasting

confidence: 50%

Estimates of genetic parameters and cluster analyses for carcass and meat quality traits in birds

Bainy

Savegnago

Freitas

et al. 2017

Pesq. agropec. bras.

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-The objective of this work was to estimate genetic parameters for bird carcass and meat quality traits, as well as to explore the genetic patterns of the breeding values of this population using cluster analyses. Data from 1,846 birds were used to estimate the genetic parameters of production and quality traits using the multiple-trait animal model, and cluster analyses were performed. The heritability estimates ranged from 0.08±0.03 for meat pH measured 24 hours after slaughter to 0.85±0.09 for body weight. The genetic correlations between production traits were high and positive. The genetic correlations between meat quality traits were low and were not informative due to the high standard errors (same magnitudes as those of the genetic correlations). The genetic correlations between meat production and quality traits were negative, except between production traits and meat lightness intensity. Based on breeding values (EBVs), the evaluated population can be divided into four groups through cluster analyses, and one group is suitable for selection because the birds presented EBVs above and around the average of the population, respectively, for production and quality traits. Therefore, it is possible to obtain genetic gains for production-related traits without decreasing meat quality.Index terms: genetic correlation, heritability, meat color, White Leghorn. Estimativa de parâmetros genéticos e análises de agrupamento para características de carcaça e qualidade da carne em avesResumo -O objetivo deste trabalho foi estimar os parâmetros genéticos para características de carcaça e qualidade da carne de aves, bem como explorar o perfil dos valores genéticos desta população, com uso de análises de agrupamento. Foram utilizados dados de 1.846 aves para estimar os parâmetros genéticos de características de produção e qualidade por meio do modelo animal multicaracterística, e foram realizadas análises de agrupamento. As estimativas de herdabilidade variaram de 0,08±0,03 para o pH da carne medido 24 horas após o abate a 0,85±0,09 para o peso corporal. As correlações genéticas entre as características de produção foram altas e positivas. Já as correlações genéticas entre as características de qualidade da carne foram baixas e não foram informativas devido aos altos erros-padrão (mesmas magnitudes que as das correlações genéticas). As correlações genéticas entre as características de produção e de qualidade da carne foram negativas, exceto entre as características de produção e o teor de luminosidade da carne. Com base nos valores genéticos (VGs), a população avaliada pode ser dividida em quatro grupos por meio da análise de agrupamento, e um dos grupos é mais adequado para seleção, uma vez que as aves apresentaram VGs acima e em torno da média da população, respectivamente, para as características de produção e de qualidade da carne. Assim, é possível obter ganhos genéticos para características relacionadas à produção sem diminuir a qualidade da carne.Termos para indexação: correlação genética, herdabilidade,...

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“…Abdominal and subcutaneous fat are regarded as the main sources of waste in the slaughterhouse. In poultry, high genetic correlations were observed between abdominal fat weight and subcutaneous fat, while there were almost no genetic correlations between abdominal fat weight and intramuscular fat percentage (Zerehdaran et al 2004;Lotfi et al 2011). Selection for reduced abdominal fatness and/or increased breast muscle yield should be effective as both traits were found to be highly heritable and favourably correlated (Ikeobi et al 2002;Jennen et al 2004;Chabault et al 2012).…”

Section: Introductionmentioning

confidence: 99%

VLDLR gene polymorphism associated with abdominal fat in Gaoyou domestic duck breed

Zhao¹,

Lin²,

Wang³

et al. 2015

CZECH J ANIM SCI

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VLDLR gene was chosen as a candidate gene infl uencing abdominal fat trait and body weight due to previous studies in human and mouse. Herein, the objectives of this study were to identify genetic polymorphisms of duck VLDLR gene, and to analyze association between combined haplotypes and abdominal fat trait in Gaoyou domestic duck. A total of 207 individuals, including the elite reservation farm Gaoyou duck (FG, n = 50), the newly formed Gaoyou duck (NG, n = 54), the reserve area Gaoyou duck (AG, n = 50), and Hybrid duck (HY, n = 53) were used for study. In this paper, one genomic fragment was sequenced in all ducks encompassing a region from exon 14 to exon 16. Five single nucleotide polymorphisms (SNPs) and three insertions/deletions (indels) were identifi ed. Based on the above eight SNPs, 11 haplotypes were identifi ed. Th e H1 was the most common haplotype in AG, FG, and HY populations, which occurred at a frequency of more than 41%. Statistical analysis indicated that four combined haplotypes were associated with body weight at 10 weeks (BW10) (P < 0.05) and abdominal fat percentage (AFP) (P < 0.01) in Gaoyou FG and AG joint population. Th is result suggested that the VLDLR gene could be a potential gene infl uencing abdominal fat trait and body weight and may be used in marker-assisted selection (MAS).

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Genetic evaluation of carcass composition and fat deposition in Japanese quail

Cited by 33 publications

References 38 publications

Genetic evaluation of carcass traits in Japanese quail using ultrasonic and morphological measurements

Genetic evaluation of carcass traits in Japanese quail using ultrasonic and morphological measurements

Estimates of genetic parameters and cluster analyses for carcass and meat quality traits in birds

VLDLR gene polymorphism associated with abdominal fat in Gaoyou domestic duck breed

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