Genetic Parameters of Growth Curve Parameters and Weekly Body Weights in Japanese Quails (Coturnix coturnix japonica)

Narinç, Doğan; Aksoy, Tülin; Karaman, Emre

doi:10.3923/javaa.2010.501.507

Cited by 53 publications

(47 citation statements)

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“…Mean value for LW42 is in good agreement with that reported by Baylan et al (1997) and Narinc et al (2010a), but higher than that of Saatci et al (2003) and Shokoohmand et al (2007). The few studies in Japanese quail have determined absolute and relative growth rates from the growth curve.…”

Section: Discussionsupporting

confidence: 82%

Single-trait bayesian analysis of some growth traits in japanese quail

Karaman

Fırat

Narinç

2014

Rev. Bras. Cienc. Avic.

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Absolute growth rate, Bayesian, heritability, quail, relative growth rate.Submitted: November/2013 Approved: April/2014 ABStRACtThe aim of this study was to estimate the heritability for some growth traits of Japanese quail through the estimation of variance components by Bayesian methodology. For this purpose, 340 progenies of 34 sires were used. Live weight (LW42) and absolute and relative growth rates at 42 days of age (AGR42 and RGR42, respectively) were submitted to single-trait analysis under a sire model. A software (package MCMCglmm) was used for the estimations, and a single chain with 65,000 rounds was run for each trait with a thinning interval of 50. Burn-in was set at 15,000 and inferences were built on posterior samples of 1,000 draws for each trait. All marginal posterior densities were unimodal and marginal posterior distributions of sire variance are slightly skewed to the right. The results of the analyses showed high, moderate, and low heritability of LW42, AGR42, and RGR42, respectively.

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Section: Discussionsupporting

confidence: 82%

Single-trait bayesian analysis of some growth traits in japanese quail

Karaman

Fırat

Narinç

2014

Rev. Bras. Cienc. Avic.

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“…In a few investigations feed conversion ratio, carcass traits and growth curves were studied (Pym et al, 1998;Narinc et al, 2010). In the studies performed on Japanese quail, lines with (Minvielle, 2004).…”

mentioning

confidence: 99%

Estimation of genetic parameters for carcass traits in Japanese quail using Bayesian methods

Narinç¹,

Karaman²,

Aksoy³

2011

SA J. An. Sci.

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The aim of this study was to estimate genetic parameters of some carcass characteristics in the Japanese quail. For this aim, carcass weight (C w ), breast weight (B w ), leg weight (L w ), abdominal fat weight (AF w ), carcass yield (C P ), breast percentage (B P ), leg percentage (L P ) and abdominal fat percentage (AF P ) were measured on approximately 500 quails (offspring of 60 sires and 180 dams). Gibbs sampling (GS) under a multi-trait animal model was applied to estimate heritability and genetic correlations. Genetic analyses were performed using MTGSAM (Multiple Trait Gibbs Sampling) software. Heritability estimates for all the traits were low to moderate. Point estimates (means of marginal posterior densities) of heritabilities for C w , B w , L w , AF w and C P , B P , L P , AF P were 0. 42, 0.36, 0.34, 0.40 and 0.11, 0.18, 0.12, 0.29, respectively. Genetic correlations between the carcass parts (C w , B w , L w , AF w ) were high and positive, ranging from 0.65 to 0.87. Direct selection for total carcass weight would increase its component traits. There were moderate to high negative genetic relationships between AF P and L P (-0.27), AF P and B P (-0.34), and AF P and C P (-0.89). Therefore, a decreasing AF P in quail could be reached by direct selection for higher C P .________________________________________________________________________________

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“…Büyümenin doğrusal olmayan regresyon analizinde aşağıda eşitliği sunulan Gompertz modelinden yararlanılmıştır [22] . y = β 0 .exp(-β 1 .exp(-β 2 .t)) Modelde y; canlı ağırlığı, t; zamanı (gün), β 0 ; asimptotik ağırlığı, β 1 ; integrasyon sabitini, β 2 anlık büyüme hızını ifade etmektedir.…”

Section: İstatistikunclassified

“…Model parametrelerinin tahmini SAS 9.3 NLIN prosedürü kullanılarak Levenberg-Marquardt iterasyon yöntemiyle gerçekleştirilmiştir [23] . Gompertz büyüme modeli kullanılarak her bir bireye ait bağıl büyüme hızı BBH=[β 2 (ln(β 0 )-ln(y t ))] eşitliğiyle hesaplanmıştır [22] .…”

Section: İstatistikunclassified

Et Tipi Ana Hattı Japon Bıldırcın Sürüsünde Çok Özellikli Seleksiyonun Fenotipik ve Genetik İlerlemelere Etkisi

Narinç¹,

Aksoy²

2014

Kafkas Univ Vet Fak Derg

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Bu çalışmada, et tipi bıldırcın ana hattı geliştirmek için karışık model eşitliklerinden yararlanarak çok özellikli seleksiyon programı uygulamanın fenotipik ve genetik ilerlemelere etkisi incelenmiştir. Araştırmada pedigri kaydı bulunan yaklaşık 2.000 birey kullanılmış olup, bıldırcın türünde çok özellikli birey modeli ile seleksiyon Türkiye'de ilk kez uygulanmıştır. Bir başlangıç sürüsünden (AHBS: ana hattı başlangıç sürüsü) şansa bağlı çiftleşmelerle 160 aileden oluşan (160 erkek -480 dişi) ana hattı seleksiyon sürüsü (AHSS-1) elde edilmiştir. Sürüde ilk seleksiyon kriteri olarak 5 haftalık yaştaki canlı ağırlık (CA) seçilmiştir. Bunun yanında, ana hattında 20 haftalık yaşa kadar olan toplam yumurta verimi (YV), Gompertz büyüme eğrisinden tahmin edilen 5 haftalık yaştaki bağıl büyüme hızı (BBH) ve 10-11, 14-15 ve 17-18 haftalık yaşlarda toplanan yumurtalardan elde edilen döllülük oranı (DO) özellikleri seleksiyon kriterleri olarak kullanılmıştır. Çok özellikli BLUP değerleri elde edilmiş ve damızlık değerlerine göre en iyi %25 erkek ve dişi bıldırcın bir sonraki sürünün (AHSS-2) ebeveynleri olacak şekilde seçilmiştir. Seleksiyon sonrasında genetik parametre tahminleri, gerçekleşen genetik parametreler, seleksiyonla sağlanan genetik ilerlemeler ve genetik yönelimler elde edilmiştir. Kuşaklarda CA, BBH ve YV özellikleri bakımından istatistiksel olarak önemli genetik ilerlemeler sağlanmıştır. Çalışma sonuçları, negatif genetik ilişkili özelliklerin çok özellikli BLUP yöntemiyle seleksiyonda bir arada değerlendirilebileceğini ortaya koymuştur. Anahtar sözcükler: Karışık model eşitlikleri, BLUP birey modeli, Genetik ilerleme, Çok özellikli seleksiyon Effects of Multi-Trait Selection on Phenotypic and Genetic Changes in a Meat Type Dam Line of Japanese Quail SummaryThe present study in Japanese quail was aimed to develop multi-trait genetic selection program for meat type dam line utilizing the mixed-model methodology. In total, 2000 pedigreed quail were formed the basis of the research where a multi-trait animal model was performed for the first time in a selection study of quail in Turkey. A flock consisting of a total of 160 families (160 male-480 female) was developed from the initial flock (AHBS: initial flock of dam line), so as to obtain a selection flock dam line (AHSS-1). Body weight at 5 weeks of age (CA) was chosen as a primary selection criterion in flock. The total egg number (YV) from the day of first lay to the 20 weeks of age, relative growth rate (BBH) at 5 weeks of age derived from Gompertz equation, and fertility rate (DO) were used as selection criteria in AHSS. Multi-trait BLUP methodology was carried out for genetic improvement of birds. In flock, 25 percent of males and females with highest breeding value were selected to produce next generations (AHSS-2). Genetic parameter estimates, realized genetic parameters, selection responses, and genetic trends were obtained. Significant (P<0.01) selection responses for CA, BBH and YV traits on generations were observed. The results of the study revea...

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Genetic Parameters of Growth Curve Parameters and Weekly Body Weights in Japanese Quails (Coturnix coturnix japonica)

Cited by 53 publications

References 1 publication

Single-trait bayesian analysis of some growth traits in japanese quail

Single-trait bayesian analysis of some growth traits in japanese quail

Estimation of genetic parameters for carcass traits in Japanese quail using Bayesian methods

Et Tipi Ana Hattı Japon Bıldırcın Sürüsünde Çok Özellikli Seleksiyonun Fenotipik ve Genetik İlerlemelere Etkisi

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