The effect of models on body weight traits in two Japanese quail populations

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SERAJ ABOLGHASEM; FARZIN NEDA; JAFARI FARNAZ

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Journal: Animal Science Journal Year:2020 | Volume:33 | Issue:128 Page(s): 97-108

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Title

The effect of models on body weight traits in two Japanese quail populations

Author(s)

SERAJ ABOLGHASEM | FARZIN NEDA | JAFARI FARNAZ | Issue Writer Certificate

Keywords

Genetic ParametersQ2

Animal modelQ2

Body weightQ1

Japanese quailQ1

Abstract

In this study, the Genetic Parameters of Body weight traits including Body weights at birth, 7, 14, 21, 28 and 35 days were investigated in Japanese quail. For this aim, two Japanese white and wild quail populations and two types of pure and cross mating methods were used. The data were analysed with different Animal models and restricted maximum likelihood (REML) procedures, using ASREML software. Six different Animal models were implemented and were compared by likelihood ratio test. All models consisted of the direct additive genetic effect, but differed in combinations of maternal additive genetic, maternal environmental and covariance between direct and maternal additive genetic effects. Body weights of female quails were higher than male quail from birth to 35 days of age. The effect of mating method on Body weight traits was significant and the highest and lowest weights of all ages was observed in offspring of wild male and female quails and offspring of male and female white quails, respectively. Also, the hatch had a significant effect on Body weights. The model including direct additive genetic, maternal additive genetic and environmental maternal effects was considered as the most appropriate model for genetic evaluation of birth weight. Based on this model, the direct heritability (h 2 a), maternal heritability (h 2 m), and the ratio of maternal environmental variance to phenotypic variance (c 2 ) of birth weight were estimated 0. 13± 0. 01, 0. 48± 0. 01 and 0. 06± 0. 01, respectively. For other Body weight traits, a simple model that included the direct additive genetic effect was selected as the appropriate model. Direct heritability for Body weight traits from 7 to 35 days was ranged from 0. 29 to 0. 39. The results of this study showed that maternal effects were significant only on birth weight of Japanese quails, and at older ages, the bird's genes play a major role to determine the weight traits.

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APA: Copy

SERAJ, ABOLGHASEM, FARZIN, NEDA, & JAFARI, FARNAZ. (2020). The effect of models on body weight traits in two Japanese quail populations. ANIMAL SCIENCES JOURNAL (PAJOUHESH & SAZANDEGI), 33(128 ), 97-108. SID. https://sid.ir/paper/375030/en

Vancouver: Copy

SERAJ ABOLGHASEM, FARZIN NEDA, JAFARI FARNAZ. The effect of models on body weight traits in two Japanese quail populations. ANIMAL SCIENCES JOURNAL (PAJOUHESH & SAZANDEGI)[Internet]. 2020;33(128 ):97-108. Available from: https://sid.ir/paper/375030/en

IEEE: Copy

ABOLGHASEM SERAJ, NEDA FARZIN, and FARNAZ JAFARI, “The effect of models on body weight traits in two Japanese quail populations,” ANIMAL SCIENCES JOURNAL (PAJOUHESH & SAZANDEGI), vol. 33, no. 128 , pp. 97–108, 2020, [Online]. Available: https://sid.ir/paper/375030/en

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