Tesis Medicina Veterinaria

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    Evaluación del forraje verde hidropónico de cebada (Hordeum vulgare) y concentrado sobre los índices productivos en etapas de crecimiento y engorde en cuyes (Cavia porcellus)
    (2024-08) Villalba Chulco, Ambar Cristina; Núñez Torres, Oscar Patricio
    The study evaluated the effects of different proportions of hydroponic barley green fodder (FVHC) and feed concentrate in the feeding of guinea pigs in the growth and fattening stages. The treatments were distributed in five groups: 100% FVHC + 0% feed concentrate (T0), 75% FVHC + 25% feed concentrate (T1), 50% FVHC + 50% feed concentrate (T2), 25% FVHC + 75% feed concentrate (T3) and 0% FVHC + 100% feed concentrate (T4). The results showed that T2 (50% FVHC + 50% feed concentrate) was the most balanced and effective as it obtained significant weight gain and adequate feed conversion in the growth and fattening stage. On the contrary, T0 (100% FVHC + 0% feed concentrate) and T4 (0% FVHC + 100% feed concentrate) had limitations in which the former obtained higher feed intake and higher feed conversion, demonstrating that it was not sufficient to satisfy the guinea pig's nutritional requirements. On the other hand, T4 presented lower feed efficiency throughout the study because the insufficient amount of fiber negatively affected its performance. Finally, the study emphasizes the importance of a mixed diet to ensure optimal performance and welfare of the guinea pigs.
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    Evaluación del efecto de la semilla de linaza (Linum usitatissimum) sobre los niveles de testosterona y parámetros productivos en conejos mestizos (Oryctolagus cuniculus) durante la fase de engorde
    (2024-08) Sánchez Díaz, Leonela Mileidy; Aragadvay Yungan, Ramon Gonzalo
    This study investigated the effect of including flaxseed (Linum usitatissimum) in diets of rabbits during the fattening phase, evaluating testosterone levels and productive parameters. Four treatments were used: T0 as control, and T1, T2, and T3 with additions of flaxseed at 3%, 6%, and 9%, respectively, all supplemented with alfalfa. Treatments (T0, T1, T2, and T3) were assigned using a randomized block design. The research was conducted over 30 days. Significant differences were observed, such as in the final weight of the rabbits, which was higher in T2 (2235.11 g) and T3 (2239.89 g) compared to T0 (1822.11 g) and T1 (2030.56 g). Food consumption varied significantly between treatments, with higher values in T2 (2187.88 g) and T3 (2282.68 g). Daily weight gain was highest in T3 (33.42 g/day), followed by T2, suggesting a potential positive effect of flaxseed on feed efficiency. There were no significant differences in feed conversion (P = 0.2583), indicating that efficiency was not affected by flaxseed addition. Mortality was low in all groups (1.23% in T0 and T1; no mortality in T2 and T3). Testosterone levels showed numerical increases with flaxseed supplementation, though without significant statistical differences. The study also evaluated carcass quality and internal organs, highlighting potential beneficial effects of flaxseed on basal metabolism and overall rabbit health.
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    Evaluación del butirato de sodio sobre los índices productivos y morfometría de las vellosidades intestinales en pollos de engorde
    (2024-08) Izurieta Buenaño, Sofía Anahí; Guerrero López, Jorge Ricardo
    The present research project evaluated the effects of sodium butyrate (SB) on productive indices and intestinal (duodenal) villi morphometry in broilers. A total of 400 one-day-old Cobb 500 male chickens were divided into 5 treatment groups, each with 4 replicates, in a completely randomized design; The diets were formulated as follows: T0 (-) (control), T1 (0.05% BS), T2 (0.10% BS), T3 (0.15% BS) and T4 (+) (0.05% flavomycin). During the entire experimental period (42 days), inclusive, in the 4 evaluation phases (pre-initial, initial, fattening and finishing), the chickens did not show statistically significant differences between treatments (p>0.05) on the productive indices (final weight, weight gain, feed consumption and feed conversion ratio); Similarly, no statistically significant differences (p>0.05) were found for the variables crypt depth, duodenal villus length and width on days 21 and 35. However, according to the cost: benefit (C/B) ratio, T1 and T3 showed a higher profit (9 cents per dollar invested), followed by T0 (6 cents), T4 (3 cents) and T2 (2 cents). In conclusion, the addition of BS does not improve the productive indices and duodenal villus morphometry of Cobb 500 chickens, although it is estimated that it shows a greater economic benefit.
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    Efecto del ajo (Allium Sativum) sobre los índices de producción y Eimeria spp en pollos de engorde
    (2024-02) Rojas Chunio, Nataly Tatiana; Guerrero López, Jorge Ricardo
    The aim of this study was to analyze different percentages of addition garlic (A. Sativum) in different doses on the productive indexes and the oocyst count of Eimeria spp, for which four treatments were used: T0: control without addition of (A. Sativum); T1: with 0.15% of (A. Sativum); T2: with 0.25% of (A. Sativum) and T3: with 0.3% of (A sativum). It was evaluated in 160 broilers of the cobb 500 line, one day old. By means of an experimental design with 4 replicates by treatment and 10 animals by replicate, the data obtained were evaluated with Tukey’s statistical test with a significance level of 95% using InfoStat as the statistical program. The productive period was divided into three stages: Initial (8-12 days); Growth (13-28 days) and Fattening (29-49 days) while samples were taken to count oocyts of Eimeria spp on days 35 and 49, for which 10 animals by treatment were sacrificed to obtain fecal samples directly from the intestine, which were evaluated in the laboratory with the floatation technique an the McMaster chamber. The best results were obtained with the T3 treatment with the addition of (3%) of (A. Sativum), finding better results in productive indexes with a weight gain of (2411.98 g) and a feed conversion of (2.08). It also showed a lower quantity of oocysts by g/feces and a good cost/benefit of 1.20. Key words: broilers, A. Sativum, productive indexes, Eimeria spp.