This research was carried out at the Santa Inés farm (Faculty of Agricultural Sciences, Universidad Técnica de Machala), El Oro Province, Ecuador. The main objective was to evaluate the effect of Moringa oleifera leaf meal on the productive and economic parameters of Cobb 500 chickens. For the biosecurity and well-being of the birds, a pre-established managemet for open-shed systems in the area was used, applying a basic vaccination schedule to the chickens. For the experiment, a Completely Random Design (CRD) was applied, using 200 Cobb 500, newborn mixed chickens (male and female), distributed in 5 treatments and evaluated for 35 days, each treatment had 4 experimental units of 10 chickens. The disposition of the groups was as follows: control (T1) to which only the basal diet; T2, T3, T4 and T5 in which 1, 2, 3, 4% of M. oleifera leaf meal was administered in the feed, respectively. The variables evaluated were: live body weight, feed consumption and accumulated water, feed conversion ratio, mortality, productive efficiency factor, kilograms of meat per square meters (m2) and economic expenses. To determine the possible differences, the statistical software Statgraphics Centurion XV.I.®, was used. A parametric analysis of one factor (ANOVA), prior to the assumptions of normality and homogeneity was used. In order to discriminate among the means, the Bonferroni multiple comparison procedure was applied with a confidence level of 95%. The results showed that there is an effect on live weight and feed intake, because diets with an inclusion greater than 3% were negatively influenced in the first 3 weeks of life of the animal, while the rest of the variables were not affected.

La investigación analiza mediante la bibliometría, publicaciones relativas a la energía solar fotovoltaica aplicada en el sector agrícola mundial durante el quinquenio 2017- 2021. La metodología utilizada se ajustó a un proceso de búsqueda y revisión literaria en las principales bases de datos: Redalyc, Science Direct, SciELO y Science.gov; con 30 artículos que tratan sobre el tema, y como resultado se concluye que el mayor número de publicaciones se han realizado en China, con incremento de las publicaciones en el 2021 en Science Direct.   The research analyzes through bibliometrics, publications related to solar photovoltaic energy applied in the global agricultural sector during the five-year period 2017-2021. The methodology used was adjusted to a process of search and literature review in the main databases: Redalyc, Science Direct, SciELO and Science.gov; with 30 articles dealing with the topic, and as a result it is concluded that the highest number of publications have been made in China, with increased publications in 2021 in Science Direct.

The research was developed at the Santa Inés Farm, of the Faculty of Agricultural Sciences of the Universidad Técnica de Machala, the objective was to evaluate the effect of the infusion of Ocimum basilicum in Cobb 500 chickens on the productive parameters and bacterial control. For the experiment, a Completely Random Design was applied to evaluate five treatments each with four experimental units of 10 chickens (200 birds). The treatments were: T1, T2, T3, and T4, to which 2 ml of infusion of O. basilicum was added at 10%, 20%, 30% and 40% respectively for each liter of drinking water and T5 normal water. For the welfare of the birds, management was used for open buildings, administering a balanced feed free of Antibiotic Growth Promoters. The variables evaluated were: live weight of the bird, consumption of feed and accumulated water, feed conversion, mortality, total bacterial microbiota and colimetry. For data analysis, the statistical program Statgraphics Centurión XV.I.® was used, subjecting the variables to an ANOVA, prior assumptions of normality and homogeneity, and the Kruskal-Wallis test for those that did not present a normal distribution. To establish the difference between the means, the Bonferroni multiple comparison procedure was used with a 95.0% confidence level. The results conclude that there is no effect on the parameters evaluated, it does not present a health risk and that due to its biopharmaceutical properties it could be used as an alternative to synthetic antibiotics.