Effects of Rearing Systems on Performance, Egg Characteristics and Immune Response in Two Layer Hen Genotype
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White (Lohmann LSL) and Brown (ATAK-S) laying hens, were reared under organic and conventional cage rearing systems, and the effects of the rearing system on performance parameters, egg production, egg characteristics, and immune response were investigated. For this purpose, a total of 832 laying hens of two commercial hybrids, i.e., 416 white (Lohmann LSL) and 416 Brown (ATAK-S) layers, were used. The experiment lasted between 23 and 70 wk of age. In this study, the white layers yielded more eggs as compared to the brown layers in both organic and conventional production systems. Egg weight exhibited a similar pattern to that of laying performance. However, the total hen-housed egg number for the white birds in the organic system was fewer than that of white birds in the conventional cage facility; conversely, a contradictory tendency was observed for the brown birds. Livability of the white layers in the organic system was remarkably lower (14%) than that of the brown line, whereas the white line survived better (3.42%) than their brown counterparts in conventional cages. The feed conversion ratio of the white hens was markedly inferior in the organic system as compared to that of the white hens in the conventional system, whereas relatively lower deterioration was reported in brown layers when reared in an organic system. The organic production system increased egg albumen height and the Haugh unit in eggs of the brown layers. The yolk color score of organic eggs was lower than that of conventional eggs for both brown and white hens. The egg yolk ratio of eggs from white layers was found to be higher in organic eggs as compared to those obtained in the conventional system. All organic eggs had heavier shells than those produced in the conventional system. Eggs from brown layers had more protein content than eggs from white layers. Neither housing systems nor genotype influenced egg yolk cholesterol concentration. When compared to conventional eggs, n-3 fatty acid content was lower in organic eggs, and the n-6:n-3 ratio was higher in organic eggs. In conclusion, two hen genotypes showed different responses in terms of performance and egg quality to two different rearing systems. A commercial white strain produced more eggs with higher egg quality as compared to a native brown strain. The brown strain was found to have adapted well to organic production conditions when survival and total egg number was taken into consideration.
Abstract
White (Lohmann LSL) and Brown (ATAK-S) laying hens, were reared under organic and conventional cage rearing systems, and the effects of the rearing system on performance parameters, egg production, egg characteristics, and immune response were investigated. For this purpose, a total of 832 laying hens of two commercial hybrids, i.e., 416 white (Lohmann LSL) and 416 Brown (ATAK-S) layers, were used. The experiment lasted between 23 and 70 wk of age. In this study, the white layers yielded more eggs as compared to the brown layers in both organic and conventional production systems. Egg weight exhibited a similar pattern to that of laying performance. However, the total hen-housed egg number for the white birds in the organic system was fewer than that of white birds in the conventional cage facility; conversely, a contradictory tendency was observed for the brown birds. Livability of the white layers in the organic system was remarkably lower (14%) than that of the brown line, whereas the white line survived better (3.42%) than their brown counterparts in conventional cages. The feed conversion ratio of the white hens was markedly inferior in the organic system as compared to that of the white hens in the conventional system, whereas relatively lower deterioration was reported in brown layers when reared in an organic system. The organic production system increased egg albumen height and the Haugh unit in eggs of the brown layers. The yolk color score of organic eggs was lower than that of conventional eggs for both brown and white hens. The egg yolk ratio of eggs from white layers was found to be higher in organic eggs as compared to those obtained in the conventional system. All organic eggs had heavier shells than those produced in the conventional system. Eggs from brown layers had more protein content than eggs from white layers. Neither housing systems nor genotype influenced egg yolk cholesterol concentration. When compared to conventional eggs, n-3 fatty acid content was lower in organic eggs, and the n-6:n-3 ratio was higher in organic eggs. In conclusion, two hen genotypes showed different responses in terms of performance and egg quality to two different rearing systems. A commercial white strain produced more eggs with higher egg quality as compared to a native brown strain. The brown strain was found to have adapted well to organic production conditions when survival and total egg number was taken into consideration.
참고문헌 (33)
- Arbona, V., "A comparison of humoral immune function in response to a killed newcastle’s vaccine challenge in caged vs. free-range Hy-line brown layers", Int. J. Poult. Sci, 10(4), pp.315~319 (2011)
- "Animal feed-determination of metabolizable energy (chemical method)", Turkish Standards Institute, 1~32 (1991)
- AOAC, "Official methods of analysis (16th ed.)" (1995), Association of Official Analytical Chemists, Inc.
- Basmacıoğlu, H., "Research on the factors affecting cholesterol content and some other characteristics of eggs in laying hens", Turk. J. Vet. Anim. Sci, 29, pp.157~164 (2005)
- Bestman, M. W. P., "Farm level factors associated with feather pecking in organic laying hens", Livest. Prod. Sci, 80, pp.133~140 (2003)
- Castellini, C., "Aspetti comportamentali, prestazioni produttive e qualita dell’uovo in galinle allevate con il metodo biologico", Riv. Avicolt, 3(5-6), pp.41~44 (2004)
- Cerolini, S., "Lipid characteristics in eggs produced in different housing systems", Ital. J. Anim. Sci, 4, pp.520~ (2005)
- Cherian, G., "Fatty acid composition and egg components of specialty eggs", Poult. Sci, 81, pp.30~33 (2002)
- Clerici, F., "Evaluation of eggshell quality characteristics in relation to the housing system of laying hens", XII. Eur. Poult. Conf (2006)
- Annual report. The Danish Poultry Council, "Danish Poultry Council", 228~ (2000)
- Dohms, J. M., "Stress-mechanisms of immunosuppression", Vet. Immunol. Immunophysiol, 30, pp.89~109 (1991)
- Council, "Laying down minimum standards for the protection of laying hens", Official Journal of the European Communities, L203, pp.53~57 (1999)
- Council., "Organic production and labelling of organic products", Official Journal of the European Communities, L189, pp.1~23 (2007)
- IUPAC, "Standard methods for the analysis of oils, fats and Derivatives. 7 th edition" (1987), Prepared for publication by A. Dieffenbacher and W. D. Pooklington. International Union of Pure and Applied Chemistry. Oxford Blackwell Scientific Publications
- Kouba, M., "Quality of organic animal products", Livest. Prod. Sci, 80, pp.33~40 (2003)
- Organic poultry production, "Lampkin, N.", University of Wales, ~, pp.Final report to MAFF. CSA 3699 (1997)
- Lopez-Bote, C. J., "Effect of free range feeding on n-3 fatty acid and alpha-tocopherol content and oxidative stability of eggs", Anim. Feed. Sci. Technol, 72, pp.33~40 (1998)
- Minelli, G., "Egg quality traits of laying hens reared in organic and conventional systems", Ital. J. Anim. Sci, 6, pp.728~730 (2007)
- Moller, A. P., "Carotenoid-dependent-signals: indicator of foraging efficiency, immunocompetence or detoxification ability?", Avian Poult. Biol. Rev, 11, pp.137~159 (2000)
- Mugnai, C., "Effects of rearing system and season on the performance and egg charasteristics of Ancona laying hens", Ital. J. Anim. Sci, 8, pp.175~188 (2009)
- Novak, C., "The combined effects of dietary lysine and total sulfur amino acid level on egg production parameters and egg components in Dekalb Delta laying hens", Poult. Sci, 83, pp.977~984 (2004)
- Rizzi, C., "Organic farming production. Effect of age on the productive yield and egg quality of hens of two commercial hybrid lines and two local breeds", Ital. J. Anim. Sci, 4(Suppl. 3), pp.160~162 (2005)
- Rizzi, L., "Effects of organic farming on egg quality and welfare of laying hens", XII. Eur. Poult. Conf (2006)
- Regnier, J. A., "Acute thermal stressors and synthesis of antibodies in chickens", Poult. Sci, 59, pp.985~990 (1980)
- Rossi, M., "Influence of the laying hen housing systems on table egg characteristics", Proceedings of the XVIIITM Eur. Symp. Quality Poult. Meat. XIIth Eur. Symp. Quality Eggs and Egg Prod (2007)
- Roush, W. B., "T 159 calculator program for Haugh unit calculation", Poult. Sci, 60, pp.1086~1088 (1981)
- Samman, S., "Fatty acid composition of certified organic, conventional and omega-3 eggs", Food Chem, 116, pp.911~914 (2009)
- "SAS user’s guide, statistics edition" (1995), SAS Institute Inc.
- Shashidhara, R. G., "Effect of dietary mannan oligosaccharide on broiler breeder production traits and immunity", Poult. Sci, 82, pp.1319~1325 (2003)
- Şekeroğlu, A., "The effects of free range system on egg productions and egg quality of brown and white layer genotypes", J. Poult. Res, 6(1), pp.10~16 (2005)
- Tengerdy, R. P., "Effects of β-carotene on disease protection and humoral immunity in chickens", Avian Dis, 34, pp.848~854 (1990)
- Van Den Brand, H., "Effect of housing system (outdoor vs. cages) and age of laying hens on egg characteristics", Br. Poult. Sci, 45, pp.745~752 (2004)
- Zemkova, L., "The effects of housing systems and age of hens on the weight and cholesterol concentration of the egg", Czech. J. Anim. Sci, 52, pp.110~115 (2007)