Examinando por Autor "Coaquira Yucra, Martha Adela"

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Costos de producción del ovino criollo en el sur del Perú
(Consejo Departamental de La Libertad Colegio de Ingenieros del Perú, 2024-06-26) Mamani Cato, Rubén Herberht; Calsin Cari, Maribel; Galvez Ilazaca, Nora Luz; Coaquira Yucra, Martha Adela; Mamani Paredes, Javier
El objetivo de este estudio fue determinar los costos de producción del ovino criollo. La investigación se realizó en el Centro Experimental Chuquibambilla de la Universidad Nacional del Altiplano, en Puno, Perú, al sur del Perú, a una altitud de 3970 msnm. Para calcular los costos de producción, se aplicaron los principios de costos directos e indirectos, obteniendo los datos de los registros contables del centro. En el proceso de cálculo de los costos de producción, se utilizaron precios de mercado para asegurar su fidelidad a la realidad económica. En algunos casos, también se consideraron los precios internos de ventas en el centro, utilizando la moneda local, el Sol (S/), como unidad monetaria. Los resultados revelan que, en la estructura global de costos, la mano de obra directa constituye el 77,2%, seguida de la alimentación con un 5,89%, y el personal administrativo representa el 5,65%, entre otros. Se observó una rentabilidad negativa del -3,70%. Para alcanzar el punto de equilibrio, se calculó que se necesitarían en promedio 2218 ovinos. Este estudio detalla los costos de criar ovinos criollos, ofreciendo información valiosa para la toma de decisiones en la gestión ganadera en regiones de altura como en el sur del Perú.
Influence of thermal comfort in housing facilities on the increase in live weight of guinea pigs (Cavia porcellus) in the high Andean region of Puno, Peru
(Malque Publishing, 2026-08-03) Calatayud Mendoza, Alfredo Pelayo; Belisario Quispe, German; Huaquisto Ramos, Edilberto; Mamani Cato, Ruben Herberht; Coaquira Yucra, Martha Adela; Zeballos Cabana, Julio Cesar; Mamani Flores, Adderly
The high-altitude region of Puno is characterized by a pronounced daily thermal oscillation, which poses a challenge for the production of guinea pigs (Cavia porcellus), a species that is highly sensitive to microclimatic variability. This study analyzed the association between the thermal conditions of the houses and the weight gain of guinea pigs, considering both the mean level of the Temperature-Humidity Index (THI) and its intraday stability, measured by the thermal amplitude THI. The research followed a quantitative, non-experimental and longitudinal design, using productive and environmental data from INIA's Illpa Experimental Center. A total of 36 Peru breed guinea pigs housed in three pre-existing and independent facilities were evaluated, with weight records collected every 14 days between November 2023 and February 2024 (216 observations). The climatic variables were monitored by digital sensors that recorded measurements every 15 minutes. The results show that a higher intraday thermal amplitude of the Temperature and Humidity Index (THI) is negatively and statistically significantly associated with weight gain. On the other hand, no statistically significant association was detected between the mean level of the THI and weight gain under the observed conditions. This result does not imply the absence of a possible biological effect of the average THI, but rather that this effect could not be statistically identified within the thermal range and the period analyzed. Likewise, males showed greater weight gains than females, while the estimated coefficient for age was negative, although it did not reach statistical significance in the linear mixed model. Overall, the results suggest that intraday thermal stability may be related to productive performance; however, they do not allow us to conclude that it is more important than the average level of the THI or that it constitutes the only determining factor of weight gain (p<0.001).