Ortega Colon, Orlando

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    Efectos de la adicion de pigmentos a la dieta de gallinas ponedoras sobre su desempeño productivo y calidad del huevo
    (2014) Ortega Colon, Orlando; Latorre Acevedo, José R.; College of Agricultural Sciences; Arcelay, Enid; Riquelme, Ernesto O.; Rivera, Aixa; Department of Animal Science; Acosta, Jaime
    This study was conducted in order to determine the quantity of pigment required to obtain the egg-yolk tonality that appeals to the puertorrican consumer and to determine if the pigments added had an effect on production and egg quality. Data were collected during 37 production days on 120 NOVOgen Brown layer hens. During the egg analysis period, eggs were collected daily while the hens had between 20 and 26 weeks of age. For a 14 day period, all hens were given a pre-experimental diet which had no additional pigments. Once this pre-experimental stage was concluded, birds where distributed randomly into five treatments, with four replicates for each treatment. Each experimental treatment consisted of providing a basal diet with no additional pigment or to provide the same diet with two pigments (canthaxanthin or OroGlo), individually or in combination. The experimental treatments were: Treatment 1 (T): basal diet (no pigment added). Treatment 2 (A): basal diet with yellow pigment (OroGlo, 11 mg/kg) added; Treatment 3 (R): basal diet with red pigment (Canthaxanthin, 11 mg/kg) added; Treatment 4 (AR1): basal diet with both yellow and red pigments (11 mg/kg); and Treatment 5 (AR2): basal diet with both yellow and red (22 mg/kg) pigments added. Hen weights and feed intake were recorded weekly. Egg production was recorded daily and the eggs were kept under refrigeration for yolk color and albumin height measurements. At the end of the trial, a sensory panel analysis was conducted with 117 panelists, to evaluate yolk color and color preferences. All data obtained was statistically evaluated by analysis of variance and treatment means were compared with Tukey’s Multiple Range Test. Pigment addition to the diets had no effect on hen weight, feed intake, egg weight, albumin height or internal quality indicators. Yolk color was significantly affected, especially with the addition of the red pigment. The results of the sensory panel evaluation showed that the Puerto Rican prefers intermediate yolk colors (yellow- redish).