Egg production and quality under three housing systems in the tropics |
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Authors: | Grissly Varguez-Montero Luis Sarmiento-Franco Ronald Santos-Ricalde Jose Segura-Correa |
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Institution: | (1) Faculty of Veterinary Medicine and Animal Science, Universidad Aut?noma de Yucat?n, Km 15.5 carretera M?rida-Xmatkuil, Apdo. Itzimna, Postal 4–116, M?rida, Yucat?n, Mexico; |
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Abstract: | The aim of this study was to evaluate egg production and quality of Rhode Island Red (RIR) laying hens in an outdoor system
in the subhumid tropic. Eighty RIR laying hens were measured in two periods and housed randomly under three treatments: outdoor
(O), indoor (I) and in conventional cages (C). Egg weight (55.88, 53.76 and 57.16 g, for O, I and C, respectively), food intake/hen/day
(138.94, 129.74 and 162.90 g, for O, I and C, respectively) and food efficiency (3.13, 3.22 and 3.96 for O, I and C, respectively)
were significantly (P < 0.05) influenced by housing system; however, both egg production and final body weight were not different (P > 0.05). Yolk colour (10.76, 9.94 and 10.08 colour scale, for O, I and C, respectively), albumen weight (92.63, 92.28 and
90.08 g, for O, I and C, respectively) and yolk weight (15.19, 14.61, 15.48 g for O, I and C, respectively) were significantly
(P < 0.05) influenced by housing system, but albumen height, Haugh units and egg shell weight remained similar (P > 0.05). Under the conditions of this study, outdoor egg production seems to be a sustainable system comparable to the commercial
type based on wired cages. |
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