Change Over and Switchback for Experimentation on Large Animals
Fagton de Mattos Negrão *
Instituto Federal de Rondônia - Campus Colorado do Oeste, Colorado do Oeste, Rondônia, Brazil.
Emerson Silva Miranda
Universidade Federal de Mato Grosso, Campus Cuiabá, Cuiabá, Mato Grosso, Brazil.
Luciano da Silva Cabral
Universidade Federal de Mato Grosso, Campus Cuiabá, Cuiabá, Mato Grosso, Brazil.
Alan Andrade Mesquita
Instituto Federal de Rondônia - Campus Colorado do Oeste, Colorado do Oeste, Rondônia, Brazil.
Amanda Rodrigues da Fonseca
Instituto Federal de Rondônia - Campus Colorado do Oeste, Colorado do Oeste, Rondônia, Brazil.
Ellen Cristina Silva Marques
Instituto Federal de Rondônia - Campus Colorado do Oeste, Colorado do Oeste, Rondônia, Brazil.
Mateus Ferreira Lucas
Instituto Federal de Rondônia - Campus Colorado do Oeste, Colorado do Oeste, Rondônia, Brazil.
Luan Rafael Assunção dos Santos
Instituto Federal de Rondônia - Campus Colorado do Oeste, Colorado do Oeste, Rondônia, Brazil.
Tayane Barbosa Pereira
Instituto Federal de Rondônia - Campus Colorado do Oeste, Colorado do Oeste, Rondônia, Brazil.
*Author to whom correspondence should be addressed.
Abstract
Among the most common designs, the very randomized design, in randomized blocks and in Latin squares, stands out, however, approaches to alternative designs are not as common in basic books that cover experimental statistics, especially in the approach that was given in this article. The study of Change Over and Switchback designs is a separate chapter within statistics. For experimentation on large animals, alternative tests are widely used, that is, obtaining a sequence of treatments that can make the final cost of this operation viable. There are two types of experimental tests: rotational (Changeover) and reversal (Switchback). The objective of this work was to present the Changeover and Switchback designs.
Keywords: Rotational experiments, experiments, ruminants