It became one of the first opponents of the Medical Chamber when, in 1857, after a contest, replaced Prof. Antonio Alves de Lima. On that occasion defended a thesis entitled "Climates".
Two years later, in 1859, also by competition, was appointed assistant professor, Section of Medicine, when he defended the thesis "Every albuminuria is symptomatic of a disease of the kidneys?".
The Imperial Government, by decree of November 9, 1861, appointed Dr. Joaquim Antonio de Oliveira Botelho to govern the chair of Materia Medica and Therapeutics, a position he held until 1869 (the year of his death).
During the War of Paraguay, with prof. Francisco Rodrigues da Silva (his successor in the chair of Materia Medica) and more than 40 students in fourth, fifth and sixth years, participated as a Navy doctor, assistance to soldiers wounded and sick, being awarded the Order of the Rose (2 ).
In the teaching of high school, the Lyceum was Professor and Director of the College Bahia International Airport.
Regarding headed, Caio Moura said: "Joaquim Botelho, ingenious talent of unique initiatives, unyielding courage, activity rare and out who conceived and promoted the creation of floating hospitals, which were of inestimable value in this Campaign Paraguay had the theater a huge territory and cut off by torrential rivers, was one of the pioneers of regenerative movement that freed Brazil's oppressive shame of slavery "(1).
Completed Sá de Oliveira, saying: "Professor. Joaquim Botelho has provided extraordinary service during the cholera epidemic in morbo Falls in 1855 and received a grateful population gold medal.
1. Caio Moura, Augusto de-Historical Memory of the Faculty of Medicine of Bahia, for the year 1914. Bahia, 1914.
2. Freire de Carvalho Filho, José Eduardo-News History About the Faculty of Medicine of Bahia. Bahia, 1909.
3. Sá de Oliveira, Eduardo - Historical Memory of the Faculty of Medicine of Bahia, concerning the year 1942. Bahia, 1992.