PIGLET BEHAVIOR INFLUENCED BY ARTIFICIAL LIGHT DURING NURSERY PERIOD

2015 
ABSTRACT: This study aimed at assessing the behavioral pattern of animals influenced by schedules of light during the nursery period. The experiment was conducted at the Embrapa Swine and Poultry. The treatments were associated with the room light, with a different treatment at each room: Program NL – natural light (control); Program 16L:8D – artificial light for 16 hours and dark for 8 hours a day; Program 23L:1D – artificial light for 23 hours and dark for 1 hour a day. The behavior of the piglets was taped for 24 hours during the first week. The schedules were split into shifts: morning (06:00 to 12:00), afternoon (13:00 to 18:00) and night (19:00 to 05:00), and the behavior was evaluated through an ethogram. The piglets presented different behavior in the distinct schedules of light, but without a clear pattern during the nursery period. Since other studies have pointed out contradictory results, it is required further studies on this subject. KEYWORDS: Ethogram, welfare, light. PADROES DE COMPORTAMENTO DE LEITOES NA FASE DE CRECHE INFLUENCIADOS PELA ILUMINACAO ARTIFICIAL Objetivou-se com este trabalho avaliar o padrao comportamental dos animais influenciados por programas de luz na fase de creche. O experimento foi realizado na Embrapa Suinos e Aves. Os tratamentos foram associados a iluminacao da sala, sendo em cada sala aplicado um tratamento diferente: Programa LN – iluminacao natural (controle); Programa 16L:8E – programa de iluminacao artificial de 16 horas diarias de luz e 8 horas de escuro e Programa 23L:1E – programa de iluminacao artificial de 23 horas diarias de luz e 1 hora de escuro. Os comportamentos dos suinos foram gravados na primeira semana durante 24 horas por dia. Os horarios foram divididos em turnos, sendo: manha (06:00 as 12:00), tarde (13:00 as 18:00) e noite (19:00 as 05:00) e os comportamentos avaliados por meio de etograma.  Os leitoes nos programas de iluminacao avaliados apresentaram comportamentos diferenciados nao tendo um padrao na fase de creche. Como existem resultados contraditorios em outros estudos, e necessario que se realizem outras pesquisas acerca do assunto. PALAVRAS-CHAVE: Etograma, leitoes, luz.
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