Browsing by Author "Montaluisa Herrera, Lisbeth Gissella"

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    Efecto del consumo de bebida fermentada de quinua (Chenopodium quinoa Willd) como probiótico en pollos de engorde
    (Universidad Técnica de Cotopaxi (UTC). Ciencias Agropecuarias y Recursos Naturales. Medicina Veterinaria, 2026-10-20) Montaluisa Herrera, Lisbeth Gissella; Silva Déley, Lucia Monserrath
    The objective of this study was to evaluate the effect of feeding a fermented quinoa (Chenopodium quinoa Willd) beverage as a probiotic to Cobb 500 broiler chickens. A quantitative approach was used, employing a hypothetical-deductive method. The research was conducted using a completely randomized experimental design over a 42-day period, with four treatments: T0 (control), T1 (2%), T2 (4%), and T3 (6%) of the fermented beverage added to the drinking water. A total of 100 birds were used, distributed at 25 per treatment, with five replicates of five birds each, with each replicate considered an experimental unit. The study aimed to determine the physical, chemical, and microbiological composition of the fermented quinoa drink, as well as to evaluate production variables such as body weight, feed and water intake, weight gain, feed conversion ratio, mortality, and cost-benefit ratio. The data obtained were analyzed using analysis of variance (ANOVA) and Tukey’s test for comparing means (p < 0.05) to determine differences between treatments. The fermented drink exhibited adequate quality characteristics, with a pH of 3.80 and a concentration greater than 1.89 × 10⁶ CFU/mL of Lactobacillus spp., the predominant bacterium in the fermentation process. Statistical analysis revealed significant differences (p<0.05) in water intake and feed conversion during one of the evaluated stages, while there were no significant differences (p>0.05) in most of the production parameters. Treatment T3 showed a favorable numerical trend, recording the best feed conversion ratio, with a value of 1.21, while treatment T2 had the lowest mortality rate (4%) and the highest benefit-to-cost ratio, with an index of 1.26. These results indicate that supplementation with fermented quinoa drink is a viable alternative for broiler chicken feed, as it did not show any negative effects on the evaluated production parameters and performed adequately during the experimental period.