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Developmental Changes in Myofibers and Expression Profiles of Potential Regulatory Genes in Slow- and Fast- Growing Chickens

Developmental Changes in Myofibers and Expression Profiles of Potential Regulatory Genes in Slow- and Fast- Growing Chickens

Jia Liu1, Zhen Wang1, Zifan Ning1, Ali Mujtaba Shah2,3,Qing Zhu1, Yan Wang1, Huadong Yin1, Zhichao Zhang1, Lu Zhang1, Yaofu Tian1, Diyan Li1,Gang Shu2,4, Lin Ye1 and Xiaoling Zhao1,*

1College of Animal Science and Technology, Sichuan Agricultural University, ,611130 Chengdu, China
2Department of Livestock Production, Shaheed Benazir Bhutto University of Veterinary and Animal Science, Sakrand 67210, Sindh, Pakistan
3Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
4Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural
University, ,611130 Chengdu, China
 
Jia Liu and Zhen Wang made equal contributions to this study.

*  Corresponding author: zhaoxiaoling@sicau.edu.cn

Fig. 1.

Body weights of FG and SG from d 7 to 70. Means with “*” differ significantly (P < 0.05).

Fig. 2.

Myofiber characteristics of populations FG and SG on d 1, 7, 28, 49, and 70. (a) Muscle weight, (b) myofiber diameter, (c) myofiber density. Means without a common lowercase differ significantly (P < 0.05).

Fig. 3.

Myofiber characteristics (myofiber diameter) of PM and GM for populations FG and SG. Means without a common lowercase differ significantly (P < 0.05).

Fig. 4.

Myofiber characteristics of PM and GM on d 1, 7, 28, 49, and 70. (a) Muscle weight, (b) myofiber diameter, (c) myofiber density. BW = doubled pectoralis major and minor muscle weights, LW = doubled drum and thigh muscle weights. Means without a common lowercase letter differ significantly (P < 0.05).

Fig. 5.

Myofiber characteristics of two populations for PM and GM on d 1, 7, 28, 49, and 70. (a) Muscle weight, (b) myofiber diameter, (c) myofiber density, FGB = breast of FG, SGB = breast of SG, FGL = leg of FG, SGL = leg of SG, FGP = PM of FG, FGG = GM of FG, SGP = PM of SG, SGG = GM of SG. Means without a common lowercase letter differ significantly (P < 0.05).

Fig. 6.

Effect of population and age on expression of MyoG in the two populations on d 1, 7, 28, 49, and 70. Means without a common letter differ significantly (P < 0.05).

Fig. 7.

Effects of population and tissue on expression of MyoG in PM and GM tissues. Means without a common letter differ significantly (P < 0.05).

Fig. 8.

Effect of age and tissue on gene expression in PM and GM on d 1, 7, 28, 49, and 70. (a) MyoG, (b) IGF-1, (c) Pax7. Means without a common letter differ significantly (P < 0.05).

Fig. 9.

Gene expression in the PM and GM of populations FG and SG on d 1, 7, 28, 49, and 70. (a) MyoD, (b) MyoG; FGP = PM of FG, SGP = PM of SG, FGG = GM of FG, SGG = GM of SG. Means without a common letter differ significantly (P < 0.05).

Pakistan Journal of Zoology

February

Vol. 54, Iss. 1, Pages 1-501

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