Estimation of genetic parameters for production, reproduction, and growth curve of Fars indigenous chicken

Neysi, Saeid; Ghaderi–Zefrehei, Mostafa; Rafeie, Farjad; Dolatabady, Mustafa Muhaghegh; Torshizi, Mahdi Elahi; Zakizadeh, Sonia; Smith, Jacqueline

doi:10.1111/asj.13808

Cited by 2 publications

(2 citation statements)

References 42 publications

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“…For example, Nguyen et al identified Gompertz as the best fitting model for body weight when exploring the optimal growth model for local chickens in Vietnam [30]. Neysi et al used eight models to fit the growth characteristics of Fars indigenous chickens, and ultimately determined that the Gompertz model is more suitable for describing its growth pattern [31]. Manjula et al found that the logistic model was more suitable for fitting the growth of Korean native chickens [32].…”

Section: Discussionmentioning

confidence: 99%

A Study on the Growth and Development Characteristics of Lindian Chickens

Liu,

Jin,

Zhou

et al. 2024

Animals

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As an excellent chicken breed found in a high-altitude zone of northern China, Lindian chickens are characterized by good egg and meat production, strong adaptability, cold tolerance, rough feeding resistance, excellent egg quality, and delicious meat quality. To facilitate the exploitation of the unique qualities of the Lindian chicken, the varying patterns and correlations of various body size and carcass traits of 3–22-week-old Lindian chickens were analyzed in this study. The optimal growth model of these traits was determined by growth curve fitting analysis. The results showed that most traits of Lindian chickens increased steadily with increasing age, and most of them increased rapidly before 10 weeks of age. In addition, the inflection point age of each trait was predicted to be between 4 and 10 weeks. Furthermore, this study revealed that body size traits were closely related to carcass traits in Lindian chickens. In summary, Lindian chickens are in a rapid growth stage before the age of 10 weeks, and better slaughter performance can be achieved through good feeding management during this stage. The reproductive traits and muscles are the main developmental focus after the age of 19 weeks, so it is important to adequately meet their energy requirements for subsequent good breeding performance.

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Section: Discussionmentioning

confidence: 99%

A Study on the Growth and Development Characteristics of Lindian Chickens

Liu,

Jin,

Zhou

et al. 2024

Animals

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“…Maternal environmental effects appear before and after laying, the later may be pre-hatching and post-hatching effects that affect egg quality traits and bird weight at hatching (Prado-Gonzalez et al, 2003). The importance of maternal effects on body weight in chickens has been shown in various ies (Maniatis et al, 2013;Neysi et al, 2023;Rahmanian et al, 2015). However, due to the difference in the genetic structure of different breeds and populations, different models have been selected as optimal models for the genetic evaluation of growth-related traits.…”

Section: Discussionmentioning

confidence: 99%

Sex‐specific genetic parameter estimates of body weight in Mazandaran indigenous chickens

Esmaeili,

Gholizadeh,

Hafezian

et al. 2024

J Animal Breeding Genetics

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Body weight is an economically important trait in poultry that shows sexual dimorphism (SD). In the present study, variation in SD in Mazandaran native chickens was investigated in terms of the (Co) variance components and genetic parameters of body weight between males and females. Studied traits were body weights at hatch (BW1), 8 weeks (BW8) and 12 weeks of age (BW12). Also, for weight at sexual maturity (WSM) covariance components were only estimated in females. Cross‐sex direct and maternal correlations were also estimated for studied traits except for WSM. For this purpose, a deep 21‐generation pedigree and body weight data (57,576 BW1, 72,925 BW8, 62,727 BW12 and, 42,496 WSM) were used. Evaluation of SD of body weight was performed using six bivariate animal models with and without considering the genetic and permanent maternal environmental effects under the restricted maximum likelihood method in WOMBAT software. Model with direct additive genetic effects and maternal genetic effects without covariance between them was identified as the best model for BW1 and BW8. The Model including direct additive genetic effects and permanent maternal environmental effects was the best model for BW12 and WSM. Direct heritability (h2) estimates for BW1, BW8 and, BW12 were, respectively, 0.05 ± 0.013, 0.17 ± 0.02 and, 0.25 ± 0.03 in males and, 0.05 ± 0.012, 0.15 ± 0.01 and 0.21 ± 0.01 in females. Also, the direct heritability of WSM based on univariate analysis in females was estimated to be 0.40 ± 0.01. Maternal heritability () varied from 0.39 ± 0.01 (BW1) to 0.04 ± 0.009 (BW8) in males, and 0.36 ± 0.10 (BW1) to 0.04 ± 0.006 (BW8) in females. The correlation between direct genetic effects between males and females for BW1 was not significantly different from one. The direct genetic correlation between the two sexes for BW8 and BW12 was significantly different from 1 concluding that these traits are dimorphic in terms of direct genetic effects and therefore independent selection in both sexes is possible.

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Estimation of genetic parameters for production, reproduction, and growth curve of Fars indigenous chicken

Cited by 2 publications

References 42 publications

A Study on the Growth and Development Characteristics of Lindian Chickens

A Study on the Growth and Development Characteristics of Lindian Chickens

Sex‐specific genetic parameter estimates of body weight in Mazandaran indigenous chickens

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