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Brian Tainika, Ahmet Şekeroğlu, Ahmet Akyol & Zacharia Waithaka Ng’ang’a. (2023) Welfare issues in broiler chickens: overview. World's Poultry Science Journal 79:2, pages 285-329.
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B. Grafl, S. Polster, T. Sulejmanovic, B. Pürrer, B. Guggenberger & M. Hess. (2017) Assessment of health and welfare of Austrian laying hens at slaughter demonstrates influence of husbandry system and season. British Poultry Science 58:3, pages 209-215.
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J.B. Kjaer, H. Glawatz, B. Scholz, S. Rettenbacher & R. Tauson. (2011) Reducing stress during welfare inspection: validation of a non-intrusive version of the LayWel plumage scoring system for laying hens. British Poultry Science 52:2, pages 149-154.
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L. Hegelund, J.T. Sørensen & J.E. Hermansen. (2006) Welfare and productivity of laying hens in commercial organic egg production systems in Denmark. NJAS: Wageningen Journal of Life Sciences 54:2, pages 147-155.
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Zuhair Al Bustany & Klas Elwinger. (1987) Response of Laying Hens to Different Dietary Lysine Intakes. Acta Agriculturae Scandinavica 37:1, pages 27-40.
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Zuhair Al Bustany & Klas Elwinger. (1986) Effect of Dietary Protein Concentration on Performance of Hens Selected on Low Protein Diet and Grouped According to Their Early Production. Acta Agriculturae Scandinavica 36:3, pages 264-274.
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