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      Influencia del hidrolizado de proteínas en el comportamiento bioproductivo en gallinas de la línea L1 White Leghorn Translated title: Influence of protein hydrolysates on bioproduction performance in L1 line White Leghorn hens

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          Abstract

          RESUMEN El objetivo de la presente investigación fue evaluar la influencia del hidrolizado de proteínas (HP) como suplemento nutricional en el comportamiento bioproductivo en gallinas White Leghorn. Se utilizaron gallinas de reproductores ligeros con 39 semanas de edad, durante seis semanas. Se realizó un diseño completamente aleatorizado con dos tratamientos de 320 gallinas cada uno (tres réplicas de 40 gallinas). El T1, recibió diariamente 2 mL de HP por ave y al T2, no se le ofertó el producto. Se controlaron las variables bioproductivas (producción total de huevos, porcentaje de postura, consumo total de pienso, conversión, viabilidad y la mortalidad por causas), los indicadores de la incubación (huevos a planta, los porcentajes de incubación, incubabilidad y pollitos de primera) y los de calidad (consumo de pienso por pollito de primera y pollitos de primera por gallina). Se observaron diferencias significativas en el porcentaje de postura y significativa para la conversión masal y en los huevos a planta, porcentaje de incubación y porcentaje de incubabilidad y con mejor comportamiento en los indicadores de calidad en las gallinas que recibieron HP. Se concluye que el empleo de HP mejora el porcentaje de postura y la conversión masal y los indicadores relativos a la incubación, porcentaje de huevos aptos a planta, porcentaje de incubación y de incubabilidad de gallinas de la línea ligera, adicionalmente, su uso reduce aproximadamente en 100 gramos el consumo de pienso necesario para obtener un pollito de primera.

          Translated abstract

          ABSTRACT The objective of this study was to evaluate the influence of protein hydrolysates (PH), as a nutritional supplement, in the bioproduction performance of White Leghorn hens. Thirty-nine-week old light line hens were assessed during six weeks. Two treatments (T) were designed involving 320 hens each (three replications of 40 hens each). In T1, each bird received 2 ml of PH daily; the birds in T2 were not offered the product. The following variables were controlled: bioproduction (total egg production, egg-laying percentage, total feed intake, mass conversion, viability, and caused mortality); incubation indicators (eggs to plant, incubation percentage, hatchability, and top quality chicks) and; quality (feed intake by top quality chicks, and top quality chicks per hen). The hens that received the PH showed significant differences in the laying, incubation, and hatchability percentage, as well as mass conversion, and the egg to plant ratio. They showed better performance in quality indicators. It is concluded that the use of PH in light line hens improves their bioproduction performance, as well as the indicators of to incubation, egg to plant ratio, and hatchability; its use also reduces by approximately 100 grams the necessary food intake to obtain top quality chicks.

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          Effect of dietary organic versus inorganic selenium in laying hens on the productivity, selenium distribution in egg and selenium content in blood, liver and kidney

          We investigated the effect of organic versus inorganic dietary selenium in laying hens on the productivity, selenium distribution in egg and selenium content in blood, liver and kidney. Sixty Leghorn laying hens were fed a basic diet containing 0.23mg Se/kg DM (dry matter) for 2 weeks and then were allocated randomly into three groups. Thereafter, the hens were given the same basic diet without supplementation, or with 0.51 mg Se/kg DM as sodium selenite (SS) or Se-malt (SM). During the experiment, egg rate and dietary intake were recorded, blood was sampled on days 10 and 20, and six eggs were sampled on days 8, 16 and 24 from each treatment group for Se content determination. At the end of the experiment, 10 hens from each treatment were slaughtered, and liver and kidney were sampled for the determination of Se content. The result showed that with the increase of dietary Se level, the Se content in egg, blood, liver and kidney was elevated (P < 0.05), but the hens' productivity was not affected. SS increased liver Se content more than SM (P < 0.05), while the Se content both in blood and kidney did not differ significantly between the SS and SM treatments. Se from SM and SS mainly deposited in the egg yolk. This suggests that the metabolic route of Se from SM is similar to that of Se from SS in laying hens.
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            Utilización del plasma sanguíneo de bovino como fuente proteica en la formulación de un medio de cultivo para lactobacilos

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              Scientific progress in the production of monogastric in the first decade of the twenty-first century

              Significant progress in the area of animal production is due to the development of researches on genetics, environment, health, management and nutrition. The search for better management conditions that benefit animal welfare resulted in changes to the installation. The genetic improvement more productive animals has encouraged the number of searches to reduce the incidence of diseases, mainly of metabolic origin. The incorporation in products with higher bioavailability as industrial amino acid and organic minerals, the inclusion of products modifiers enteric of microflora as probiotic, prebiotic, symbiotic, nucleotides and exogenous enzymes, has benefited the use of nutrients are not well absorbed and often unavailable in the diet. Biotechnology latest as nutrition in egg and molecular biology has been used for the benefit of the increase animal productivity.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                rfmvz
                Revista de la Facultad de Medicina Veterinaria y de Zootecnia
                Rev. Med. Vet. Zoot.
                Facultad de Medicina Veterinaria y de Zootecnia Universidad Nacional de Colombia (Bogotá, Distrito Capital, Colombia )
                0120-2952
                August 2018
                : 65
                : 2
                : 140-153
                Affiliations
                [1] La Habana orgnameUniversidad Agraria de La Habana orgdiv1Facultad de Medicina Veterinaria Cuba
                [2] La Habana La Habana orgnameCentro de Ingeniería Genética y Biotecnología Cuba
                Article
                S0120-29522018000200140
                10.15446/rfmvz.v65n2.75635
                7210e861-f255-40fd-877e-015be4fc1d67

                This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

                History
                : 23 May 2017
                : 18 March 2018
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 42, Pages: 14
                Product

                SciELO Colombia

                Categories
                Artículos de investigación

                hidrolizado de proteínas,indicadores bioproductivos,indicadores de la incubación,indicadores de calidad del huevo,protein hydrolysates,bioproduction indicators,egg quality indicators,incubation indicators

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