Organic selenium supplementation in layer hens and its transfer to the egg
Introduction. Selenium is an essential trace mineral for human and animal health, is part of the selenoproteins, that have an antioxidant function, and also prevent and reduce the damage caused by free radicals in the organism. Objective. The objective was to evaluate the effect of the dietary supplementation with organic selenium in layer hens on the productive performance, egg quality and its transfer to the egg for human consumption. Materials and methods. Two trials were performed with flocks of 33 000 ISA Brown hens (of 32 and 40 weeks of age), in Alajuela province, Costa Rica, during the first semester of 2013. After a control period (four weeks), the diet was supplemented with 0.4 ppm of organic selenium (three weeks for adaptation and three weeks for enrichment), with a withdraw period (three weeks). Laying percentage, accumulated eggs, mortality, feed intake, egg weight and mass and feed conversion were monitored weekly; a sample of fifty birds per flock was used to evaluate body weight. Haugh units, shell thickness and yolk color were determined weekly in fifteen fresh eggs, fifteen seven days-old-eggs and fifteen fourteen-days-old eggs. The selenium concentration in eggs was measured in the three periods (six eggs per period). Results. No variations were observed on production performance parameters that can be attributable to the addition of the selenium. The dietary supplementation with organic selenium increased the egg content of this mineral, which varied from not being detected during the control period on both trials, to 0.14 µg/g and 0.39 µg/g during the supplementation period, respectively. The egg storage affected significantly (p<0.05) Haugh units and yolk color in both trials, and in trial 1 also affected egg weight and mass. Conclusion. Dietary supplementation of laying hens with organic selenium can lead to the production of added-value eggs.
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Universidad de Costa Rica
2019
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Rodríguez-Alfaro, Marisol Salas-Durán, Catalina Orozco-Vidaorreta, Carlos |
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Rodríguez-Alfaro, Marisol Salas-Durán, Catalina Orozco-Vidaorreta, Carlos Organic selenium supplementation in layer hens and its transfer to the egg |
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Rodríguez-Alfaro, Marisol Salas-Durán, Catalina Orozco-Vidaorreta, Carlos |
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Rodríguez-Alfaro, Marisol |
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Organic selenium supplementation in layer hens and its transfer to the egg |
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Organic selenium supplementation in layer hens and its transfer to the egg |
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Organic selenium supplementation in layer hens and its transfer to the egg |
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Organic selenium supplementation in layer hens and its transfer to the egg |
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Organic selenium supplementation in layer hens and its transfer to the egg |
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organic selenium supplementation in layer hens and its transfer to the egg |
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Introduction. Selenium is an essential trace mineral for human and animal health, is part of the selenoproteins, that have an antioxidant function, and also prevent and reduce the damage caused by free radicals in the organism. Objective. The objective was to evaluate the effect of the dietary supplementation with organic selenium in layer hens on the productive performance, egg quality and its transfer to the egg for human consumption. Materials and methods. Two trials were performed with flocks of 33 000 ISA Brown hens (of 32 and 40 weeks of age), in Alajuela province, Costa Rica, during the first semester of 2013. After a control period (four weeks), the diet was supplemented with 0.4 ppm of organic selenium (three weeks for adaptation and three weeks for enrichment), with a withdraw period (three weeks). Laying percentage, accumulated eggs, mortality, feed intake, egg weight and mass and feed conversion were monitored weekly; a sample of fifty birds per flock was used to evaluate body weight. Haugh units, shell thickness and yolk color were determined weekly in fifteen fresh eggs, fifteen seven days-old-eggs and fifteen fourteen-days-old eggs. The selenium concentration in eggs was measured in the three periods (six eggs per period). Results. No variations were observed on production performance parameters that can be attributable to the addition of the selenium. The dietary supplementation with organic selenium increased the egg content of this mineral, which varied from not being detected during the control period on both trials, to 0.14 µg/g and 0.39 µg/g during the supplementation period, respectively. The egg storage affected significantly (p<0.05) Haugh units and yolk color in both trials, and in trial 1 also affected egg weight and mass. Conclusion. Dietary supplementation of laying hens with organic selenium can lead to the production of added-value eggs. |
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AT rodriguezalfaromarisol organicseleniumsupplementationinlayerhensanditstransfertotheegg AT salasdurancatalina organicseleniumsupplementationinlayerhensanditstransfertotheegg AT orozcovidaorretacarlos organicseleniumsupplementationinlayerhensanditstransfertotheegg AT rodriguezalfaromarisol suplementaciondegallinasponedorasconselenioorganicoysutransferenciaalhuevo AT salasdurancatalina suplementaciondegallinasponedorasconselenioorganicoysutransferenciaalhuevo AT orozcovidaorretacarlos suplementaciondegallinasponedorasconselenioorganicoysutransferenciaalhuevo |
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oai:portal.ucr.ac.cr:article321062023-06-16T13:46:54Z Organic selenium supplementation in layer hens and its transfer to the egg Suplementación de gallinas ponedoras con selenio orgánico y su transferencia al huevo Rodríguez-Alfaro, Marisol Salas-Durán, Catalina Orozco-Vidaorreta, Carlos minerals animal nutrition food enrichment quality minerales nutrición animal enriquecimiento calidad Introduction. Selenium is an essential trace mineral for human and animal health, is part of the selenoproteins, that have an antioxidant function, and also prevent and reduce the damage caused by free radicals in the organism. Objective. The objective was to evaluate the effect of the dietary supplementation with organic selenium in layer hens on the productive performance, egg quality and its transfer to the egg for human consumption. Materials and methods. Two trials were performed with flocks of 33 000 ISA Brown hens (of 32 and 40 weeks of age), in Alajuela province, Costa Rica, during the first semester of 2013. After a control period (four weeks), the diet was supplemented with 0.4 ppm of organic selenium (three weeks for adaptation and three weeks for enrichment), with a withdraw period (three weeks). Laying percentage, accumulated eggs, mortality, feed intake, egg weight and mass and feed conversion were monitored weekly; a sample of fifty birds per flock was used to evaluate body weight. Haugh units, shell thickness and yolk color were determined weekly in fifteen fresh eggs, fifteen seven days-old-eggs and fifteen fourteen-days-old eggs. The selenium concentration in eggs was measured in the three periods (six eggs per period). Results. No variations were observed on production performance parameters that can be attributable to the addition of the selenium. The dietary supplementation with organic selenium increased the egg content of this mineral, which varied from not being detected during the control period on both trials, to 0.14 µg/g and 0.39 µg/g during the supplementation period, respectively. The egg storage affected significantly (p<0.05) Haugh units and yolk color in both trials, and in trial 1 also affected egg weight and mass. Conclusion. Dietary supplementation of laying hens with organic selenium can lead to the production of added-value eggs. Introducción. El selenio es un mineral traza esencial para la salud humana y animal, forma parte de las selenoproteínas, que tienen función antioxidante, previenen y reducen el daño que causan los radicales libres en el organismo. Objetivo. El objetivo fue evaluar el efecto de la suplementación dietaria con selenio orgánico en gallinas ponedoras sobre los rendimientos zootécnicos, la calidad de huevo y su transferencia al huevo de consumo humano. Materiales y métodos. Se realizaron dos ensayos con lotes de 33 000 gallinas ISA Brown (de 32 y 40 semanas de edad) en la provincia de Alajuela, Costa Rica, durante el primer semestre del 2013. Después de un periodo control (cuatro semanas), se suplementó el alimento con 0,4 ppm de selenio orgánico (tres semanas adaptación y tres semanas enriquecimiento), y se tuvo un periodo de retiro (tres semanas). El porcentaje de postura, huevos acumulados, mortalidad, consumo de alimento, peso y masa de huevo y conversión alimenticia fueron monitoreados semanalmente; se tomó una muestra de cincuenta aves por lote para evaluar peso corporal. Se determinaron semanalmente las variables unidades Haugh, grosor de cáscara y color de yema en quince huevos frescos, quince huevos de siete días y quince huevos de catorce días de puestos. La concentración de selenio en huevo se midió en los tres periodos (seis huevos por periodo). Resultados. No se observaron variaciones en los parámetros zootécnicos atribuibles a la adición del selenio. La suplementación dietaria con selenio orgánico de gallinas ponedoras aumentó el contenido de este mineral en los huevos, el cual varió, de no ser detectado en los periodos control de ambos ensayos, a 0,14 µg/g y 0,39 µg/g, durante el periodo de suplementación de cada ensayo. El almacenamiento del huevo afectó significativamente (p<0,05) las unidades Haugh y el color de la yema en ambos ensayos; y en el ensayo 1 también afectó el peso y la masa del huevo. Conclusión. La suplementación dietaria de gallinas ponedoras con selenio orgánico puede llevar a producir huevos con valor agregado. Universidad de Costa Rica 2019-01-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article application/pdf text/html application/zip text/xml https://revistas.ucr.ac.cr/index.php/agromeso/article/view/32106 10.15517/am.v30i1.32106 Agronomía Mesoamericana; 2019: Agronomía Mesoamericana: Vol. 30, Issue 1 (January-April); 239-253 Agronomía Mesoamericana; 2019: Agronomía Mesoamericana: Vol. 30, Nº 1 (Enero-abril); 239-253 Agronomía Mesoamericana; 2019: Agronomía Mesoamericana: Vol. 30, Issue 1 (January-April); 239-253 2215-3608 1021-7444 spa https://revistas.ucr.ac.cr/index.php/agromeso/article/view/32106/36555 https://revistas.ucr.ac.cr/index.php/agromeso/article/view/32106/36556 https://revistas.ucr.ac.cr/index.php/agromeso/article/view/32106/36752 https://revistas.ucr.ac.cr/index.php/agromeso/article/view/32106/37010 |