Adedeji, T. A., Amao, S. R., Popoola, A. D. and Ogundipe, R. I. (2015). Fertility, hatchability and eggs quality traits of Nigerian locally adapted chickens in the derived savanna environment of Nigeria. Journal of Biology, Agriculture and Healthcare, 5(17), 36-42.
Appleby, M. C. (1984). Factors affecting floor laying by domestic hens: a review. World's Poultry Science Journal, 40(3), 241-249..
Bilcik, B., I. Estevez and E. Russek-Cohen, Reproductive success of broiler breeders in natural mating systems: the effect of male-male competition, sperm quality, and morphological characteristics. Poultry Science, 2005. 84(9): 1453-62.
Bish, C. L., Beane, W. L., Ruszler, P. L. and Cherry, J. A. (1985). Body weight influence on egg production. Poultry Science, 64(12), 2259-2262..
Blanco, A. E. , Icken, W. , Ould-Ali, D. , Cavero, D. and Schmutz, M. . (2014). Genetic parameters of egg quality traits on different pedigree layers with special focus on dynamic stiffness. Poultry Science, 2014. 93(10): 2457-63.
Brillard, J., Natural mating in broiler breeders: present and future concerns. World's Poultry Science Journal, 2004. 60(4): 439-445.
C Hrnčár, E Hanusová, Hanus, A. and Bujko, J. . Effect of genotype on egg quality characteristics of Japanese quail (Coturnix japonica). slovak journal of animal science, 2014.
Chung, S. H. and Lee, K. W. (2014). Effect of hen age, storage duration and temperature on egg quality in laying hens. International Journal of Poultry Science, 13(11), 634.
Cook N J , Smykot A B , Holm D E , et al. Assessing Feather Cover of Laying Hens by Infrared Thermography[J]. Journal of Applied Poultry Research, 2006, 15( 2):274-279.
Cui, X., Gong, J., Han, H., He, L., Teng, Y., Tetley, T. and Zhang, J. J. (2018). Relationship between free and total malondialdehyde, a well-established marker of oxidative stress, in various types of human biospecimens. Journal of thoracic disease, 10(5), 3088.
Dong, X., Li, Z., Shen, Z. and Tang, X. (2018). Nondestructive egg freshness assessment from the equatorial and blunt region based on visible near infrared spectroscopy. Spectroscopy Letters, 51(10), 540-546.
Duman, M. , Ekerolu, A. , Yldrm, A. , Elerolu, H. and Camci, O. . (2016). Relation between egg shape index and egg quality characteristics. Archiv fur Geflugelkunde, 2016. 80: 1-9.
Duru, M. , Duru, A. A. , Karadas, K. , Eyduran, E. and Tariq, M. M. . (2017). Effect of Carrot (Daucus carota) Leaf Powder on External and Internal Egg Characteristics of Hy-Line White Laying Hens. Pakistan journal of zoology, 2017. 49(1).
Eisen, E. J., Bohren, B. B. and McKean, H. E. (1962). The Haugh unit as a measure of egg albumen quality. Poultry Science, 41(5), 1461-1468.
Geng, A. L. , Liu, H. G. , Zhang, Y. , Zhang, J. and Yan, Z. X.. Effects of indoor stocking density on performance, egg quality, and welfare status of a native chicken during 22 to 38 weeks. Poultry science, 2020. 99(1): 163-171.
Grover, R. M., Anderson, D. L., Damon Jr, R. A. and Ruggles, L. H. (1972). The effects of bird density, dietary energy, light intensity, and cage level on the reproductive performance of heavy type chickens in wire cages. Poultry Science, 51(2), 565-575.
Han, X. J., Qin, P., Li, W. X., Ma, Q. G., Ji, C., Zhang, J. Y. and Zhao, L. H. Effect of sodium selenite and selenium yeast on performance, egg quality, antioxidant capacity, and selenium deposition of laying hens. Poultry Science, 2017. 96(11): 3973-3980.
Hassan, M. R., Sultana, S., Choe, H. S. and Ryu, K. S. Effect of monochromatic and combined light colour on performance, blood parameters, ovarian morphology and reproductive hormones in laying hens. Italian Journal of Animal Science, 2013. 12(3): 359-364.
Hurnik, J. F., Piggins, D. J., Reinhart, B. S. and Summers, J. D. The effect of visual pattern complexity of feeders on food consumption of laying hens. British Poultry Science, 1974. 15(1): 97-105.
Jackson, M.E. and Waldroup P.W., Research Note: Effect of Cage Level (Tier) on the Performance of White Leghorn Chickens - ScienceDirect. Poultry Science, 1987. 66(5): 907-909.
Karaman, S., Sekeroglu, A. and Duman, M.. Physical Characteristics and Performance of Laying Hens Caged in Different Tiers and Environmental Parameters of Each Tier. Transactions of the Asabe, 2013. 56(1): 321-328.
Kumar, A., Pant, P., Basu, S., Rao, G. R. K. and Khanna, H. D. (2007). Oxidative stress in neonatal hyperbilirubinemia. Journal of tropical pediatrics, 53(1), 69-71.
Labrash L F , Scheideler S E . Farm Feather Condition Score Survey of Commercial Laying Hens[J]. The Journal of Applied Poultry Research, 2005, 14(4):740-744.
Li, C., Wang, W., Lee, J., Zeng, L., Yang, Y., Yin, S. J. and Qian, G. Y. (2020). Comparative studies of the expression of creatine kinase isoforms under immune stress in Pelodiscus sinensis. International journal of biological macromolecules, 162, 11-23.
Li, S. W., Sun, X., He, Y., Guo, Y., Zhao, H. J., Hou, Z. J. and Xing, M. W. (2017). Assessment of arsenic trioxide in the heart of Gallus gallus: alterations of oxidative damage parameters, inflammatory cytokines, and cardiac enzymes. Environmental Science and Pollution Research, 24(6), 5781-5790.
Li, Y., Zhan, K., Li, J., Liu, W., Ma, R., Liu, S. and Hu, Y. (2018). Comparison of natural mating and artificial insemination on laying performance, egg quality and welfare of fast feathering huainan partridge chickens. Pakistan Journal of Zoology, 50(3), 1131-1135.
Onbaşılar, E. E. and Aksoy, F. T. (2005). Stress parameters and immune response of layers under different cage floor and density conditions. Livestock Production Science, 95(3), 255-263.
Roberts, J. R. (2004). Factors affecting egg internal quality and egg shell quality in laying hens. The Journal of Poultry Science, 41(3), 161-177.
Roy, B., Ali, M. A., Sarkar, P. K., Sarker, P. K., Kawsar, M. H. and Shah, M. (2014). Laying behaviour of egg and meat type chicken as influenced by nest tier. Wayamba Journal Of Animal Science, 6, 839-844.
Saraiva S , Saraiva C , Stilwell G . Feather conditions and clinical scores as indicators of broilers welfare at the slaughterhouse[J]. Research in Veterinary Science, 2016:75-79.
Sefton E. A., The Interactions of Cage Size, Cage Level, Social Density, Fearfulness and Production of Single Comb White Leghorns. Poultry Science, 1976. 55(5): 1922-1926.
Şekeroğlu, A, Duman, M. , Y Tahtalı, A Yıldırım and H Eleroğlu.Effect of cage tier and age on performance, egg quality and stress parameters of laying hens. South African Journal of Animal Science, 2014. 44(3).
Sun, L., Yuan, L. M., Cai, J. R., Lin, H. and Zhao, J. W. (2015). Egg freshness on-line estimation using machine vision and dynamic weighing. Food Analytical Methods, 8(4), 922-928.
Suresh, D. R., Annam, V., Pratibha, K. and Prasad, B. M. (2009). Total antioxidant capacity–a novel early bio-chemical marker of oxidative stress in HIV infected individuals. Journal of biomedical science, 16(1), 1-4.
Tauson, R. Avoiding Excessive Growth of Claws in Caged Laying Hens. Acta Agriculturae Scandinavica, 1986. 36(1): 95-105.
Yildiz, A., Lacin, E., Hayirli, A. and Macit, M, Effects of cage location and tier level with respect to light intensity in semiconfined housing on egg production and quality during the late laying period. Journal of applied poultry research, 2006. 15(3): 355-361.
Zaheer, K., An Updated Review on Chicken Eggs: Production, Consumption, Management Aspects and Nutritional Benefits to Human Health. Food and Nutrition Sciences, 2015. 6(13): 1208-1220.
Zhao, S., Zhang, K., Ding, X., Celi, P., Yan, L., Bai, S. and Wang, J.The impact of dietary supplementation of different feed additives on performances of broiler breeders characterized by different egg-laying rate. Poultry science, 2019. 98(11): 6091-6099.
Zhao, Y., Li, X., Sun, S., Chen, L., Jin, J., Liu, S. and Lu, L. Protective role of dryland rearing on netting floors against mortality through gut microbiota-associated immune performance in Shaoxing ducks. Poultry science, 2019. 98(10): 4530-4538.