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Santiago Guamàn Rivera
Grupo de Investigación en Rumiantes (G2R), Departamento de Ciencia Animal y de los Alimentos, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain

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Short Biography

Medico veterinario zootenista, máster en producción y sanidad animal, vinculado a procesos de transferencia de técnologia, capacitación y docencia en la Region Amazonia de Ecuador , actualmente desarrollo mi tesis doctoral en rumiantes de leche , en temas de nutrición mediante la valoración de nuevas variedades de cebada .

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Journal article
Published: 02 February 2021 in Agriculture
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Climate change has increased the interannual and seasonal variation in the average temperature and precipitation rate, which determine forage availability globally. Similar patterns of change have occurred in tropical regions, and Ecuador is no exception. This region includes other influencing factors, such as the conversion of tropical forests to extensive pastures. Therefore, this study was carried out to evaluate guinea grass (Panicum maximum) cultivated under silvopastoral systems with different management strategies in both of the seasons of the study region in Ecuador (rainy season and dry season). A randomized complete block design was used for the experiment, with three repetitions and three treatments. Agronomic measures, forage production, chemical composition, animal responses, and soil properties were evaluated. Data were analyzed with the Mixed model of SAS. Differences in all evaluated parameters were observed between treatments, and silvopastoral systems (SPSs) produced better results than conventional grass monoculture. Furthermore, there was a strong seasonal effect on forage production, chemical composition, and soil properties. Therefore, management of Panicum maximum with well-planned grazing can enhance animal responses and help to retain natural resources, lowering the pressure on forests.

ACS Style

Raúl González Marcillo; Walter Castro Guamàn; Angela Guerrero Pincay; Plutarco Vera Zambrano; Nelson Ortiz Naveda; Santiago Guamàn Rivera. Assessment of Guinea Grass Panicum maximum under Silvopastoral Systems in Combination with Two Management Systems in Orellana Province, Ecuador. Agriculture 2021, 11, 117 .

AMA Style

Raúl González Marcillo, Walter Castro Guamàn, Angela Guerrero Pincay, Plutarco Vera Zambrano, Nelson Ortiz Naveda, Santiago Guamàn Rivera. Assessment of Guinea Grass Panicum maximum under Silvopastoral Systems in Combination with Two Management Systems in Orellana Province, Ecuador. Agriculture. 2021; 11 (2):117.

Chicago/Turabian Style

Raúl González Marcillo; Walter Castro Guamàn; Angela Guerrero Pincay; Plutarco Vera Zambrano; Nelson Ortiz Naveda; Santiago Guamàn Rivera. 2021. "Assessment of Guinea Grass Panicum maximum under Silvopastoral Systems in Combination with Two Management Systems in Orellana Province, Ecuador." Agriculture 11, no. 2: 117.

Journal article
Published: 07 November 2020 in Animals
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A study was conducted at the Escuela Superior Politècnica de Chimborazo, Ecuador, to evaluate the influence of litter size of guinea pigs (Cavia porcellus) on their development and to establish the economic profitability of the production system. Forty-eight animals were used, distributed into litters of two, three, and four rodents per litter, with a balanced diet and green fresh alfalfa for the weaning, growth, and fattening stage, the rodents and litters were randomly selected, applying the statistical model completely randomly and evaluating different variables across 120 days. The litters of three guinea pigs obtained the best productive responses and economic profitability. With respect to sex, the males presented better productive behavior, greater economic increase, and less cost, evidencing that mixed feeding influences the number of guinea pigs per birth in terms of growth and development. The results serve to improve guinea pig meat production for the rural population.

ACS Style

Angela Edith Guerrero Pincay; Raúl Lorenzo González Marcillo; Walter Efraín Castro Guamàn; Nelson Rene Ortiz Naveda; Deyvis Angel Grefa Reascos; Santiago Alexander Guamàn Rivera. Influence of Litter Size at Birth on Productive Parameters in Guinea Pigs (Cavia porcellus). Animals 2020, 10, 2059 .

AMA Style

Angela Edith Guerrero Pincay, Raúl Lorenzo González Marcillo, Walter Efraín Castro Guamàn, Nelson Rene Ortiz Naveda, Deyvis Angel Grefa Reascos, Santiago Alexander Guamàn Rivera. Influence of Litter Size at Birth on Productive Parameters in Guinea Pigs (Cavia porcellus). Animals. 2020; 10 (11):2059.

Chicago/Turabian Style

Angela Edith Guerrero Pincay; Raúl Lorenzo González Marcillo; Walter Efraín Castro Guamàn; Nelson Rene Ortiz Naveda; Deyvis Angel Grefa Reascos; Santiago Alexander Guamàn Rivera. 2020. "Influence of Litter Size at Birth on Productive Parameters in Guinea Pigs (Cavia porcellus)." Animals 10, no. 11: 2059.

Journal article
Published: 20 January 2020 in Revista Arbitrada Interdisciplinaria Koinonía
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In Ecuador, a government institution is responsible for applying regulations for official animal control of rabies and reducing to non-dangerous levels. However, in Orellana, no documented bibliography serves as a resource to assess risk. An observational study was carried out of the bovine rabies outbreaks occurrences from 2012 to 2018 period. With the SAS statistical package were obtained; descriptive statistics as well as interquartile values of the cases presented for then build an endemic channel and shows accumulated prevalence rate for each year. We resulted indicated that was presented a total of 44 cases to rabies during all period study. Finally, we can tell the frequency of the disease did not show marked seasonality due to climatic factors.

ACS Style

Santiago Alexander Guamán-Rivera; Walter Efraín Castro-Guamán; Raúl Lorenzo González-Marcillo; Ángela Edith Guerrero-Pincay. Study of the Outbreaks of Bovine Rabies Occurrence in Orellana, Ecuador the 2012-2018 period. Revista Arbitrada Interdisciplinaria Koinonía 2020, 5, 559 -573.

AMA Style

Santiago Alexander Guamán-Rivera, Walter Efraín Castro-Guamán, Raúl Lorenzo González-Marcillo, Ángela Edith Guerrero-Pincay. Study of the Outbreaks of Bovine Rabies Occurrence in Orellana, Ecuador the 2012-2018 period. Revista Arbitrada Interdisciplinaria Koinonía. 2020; 5 (9):559-573.

Chicago/Turabian Style

Santiago Alexander Guamán-Rivera; Walter Efraín Castro-Guamán; Raúl Lorenzo González-Marcillo; Ángela Edith Guerrero-Pincay. 2020. "Study of the Outbreaks of Bovine Rabies Occurrence in Orellana, Ecuador the 2012-2018 period." Revista Arbitrada Interdisciplinaria Koinonía 5, no. 9: 559-573.