Tesis Medicina Veterinaria y Zootecnia

Permanent URI for this collectionhttp://repositorio.uta.edu.ec/handle/123456789/872

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Subject: search.filters.subject.HUEVOS

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    Evaluación del peso y tiempo de almacenamiento en huevos de gallina criolla (Gallus gallus) sobre los índices de incubación
    (2023-03) Tubon Achachi, Darwin Saul; Avilés Esquivel, Diana Fernanda
    The aim of this investigation was to evaluate the weight and storage time in Creole hen eggs (Gallus gallus) on incubation indices. For this objective, 810 eggs were collected from a batch of 54-week-old Creole breeding hens. In the study, 9 treatments resulting from the combination of three weight ranges (40-50 g, 51 -60 g and 61-70 g) and three storage times (5, 9 and 13 days) were evaluated using a Random Block Design (D.B.C.A) with a 3x3 factorial arrangement, with 3 repetitions per treatment, giving a total of 27 experimental units and integrating 30 eggs in each experimental unit. The eggs were collected in the morning and afternoon to later be weighed and distributed in the previously mentioned treatments. The best results with the same level of statistical significance for hatchability were T1 (40-50 g eggs, stored for 5 days) and T2 (40-50 g eggs, stored for 9 days), presenting values of 84, 44% and 82.22% respectively. With respect to viability, the best result was obtained with T1 (96%) and in the same way for late embryonic mortality a reduced value was registered with said treatment. Regarding the birth weight of all birds, a higher weight was obtained with T7 (61-70 g eggs stored for 5 days). Regarding the percentage of first class birds, better results were obtained with T1 (83.33%); while, in second-class birds, there were no significant differences between the means of the treatments.
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    Caracterización de salmonella (salmonella spp) en huevos frescos de gallinas mediante la utilización del sistema microgen gn a en la parroquia Cotaló
    (2016) Acosta Vargas, Rodrigo Fabían; Montero Recalde, Mayra Andrea
    In this research entitled " CHARACTERIZATION OF SALMONELLA (Salmonella spp) IN FRESH EGGS POULTRY By using Microgen GN A IN THE Cotaló PARISH " , aimed to establish serovars of Salmonella using System Microgen GN A eggs fresh chicken and thus provide very relevant data on the level of pollution caused by eggs. A total of 229 eggs total farms belonging to the Cotaló Parish of the province of Tungurahua were analyzed , samples were collected randomly and by a percentage ratio between sample units ( daily production of each farm ) vs the universe the sample ( daily production of Cotaló ) , after microbiological processes using qualitative tests of biochemical confirmation for Salmonella ( lysine, ornithine , H2S , glucose, mannitol , xylose , ONPG , indole, urease , Voges Proskauer , citrate , tryptophan deaminase . ) , the presence of six positive samples detected Salmonella spp . , Which represents 7.9% of the sampling rate and using the system Microgen GN A were identified two serotypes of Salmonella were the same as Salmonella pullorum with a presence of 6.58 % and Salmonella species with the presence of 1,32 % Keywords: Pollution, Eggs, Microbiology, Salmonella, Serovars.