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Previous issue date: 2010 === Objetivou-se com esta pesquisa avaliar a influ?ncia da ilumina??o artificial, na creche, sobre o
desempenho produtivo e estado sanit?rio dos leit?es e caracterizar as condi??es ambientais
dentro das salas dos programas de ilumina??o artificial. O experimento foi realizado no
Centro Nacional de Pesquisa em Su?nos e Aves (CNPSA-Embrapa), no Sistema de Produ??o
de Su?nos, localizado no munic?pio de Conc?rdia, regi?o Oeste do Estado de Santa Catarina.
O experimento foi realizado em dois per?odos, de 19 de junho de 2008 a 24 de julho de 2008 e
de 10 de junho de 2009 a 15 de julho de 2009, com clima t?pico de inverno. Foram alocados
seis animais em cada baia e utilizadas seis baias (blocos) centrais por sala. Os animais foram
resultantes de cruzamento f?meas (Landrace x Large-White) e machos (MS 115),
desmamados com 28,3 ? 2,1 dias de idade e peso de 9 ? 1,2 kg, de acordo com o manejo da
granja. Os tratamentos foram associados ? ilumina??o da sala, sendo em cada uma aplicado
um tratamento diferente: Programa LN - Ilumina??o natural (controle); Programa 16L:8E -
Ilumina??o artificial de 16 horas di?rias de luz e 8 hora de escuro (16L:8E); Programa 23L:1E
- Ilumina??o artificial de 23 horas di?rias de luz e 8 horas de escuro (23L:1E). As vari?veis
analisadas foram: desempenho (ganho de peso di?rio, ganho de peso acumulado, consumo de
ra??o di?rio, consumo de ra??o acumulado, consumo de ?gua di?rio); ocorr?ncia de diarr?ia
nos leit?es; vari?veis meteorol?gicas (temperatura de bulbo seco, umidade e velocidade do ar)
e ilumin?ncia. O planejamento experimental foi em blocos completos casualizados, com tr?s
tratamentos, duas repeti??es e 35 dias de medi??o e as m?dias comparadas pelo teste t. N?o
houve influ?ncia da ilumina??o sobre as vari?veis de desempenho. A frequ?ncia de diarr?ia
n?o foi influenciada pelos programas de ilumina??o. As diferen?as encontradas nas vari?veis
meteorol?gicas n?o influenciaram o desempenho dos su?nos. Os programas de ilumina??o
avaliados n?o apresentaram melhorias no desempenho dos leit?es em fase de creche que
justificassem a sua utiliza??o. === Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, [2010]. === ABSTRACT
The objective of this research was to evaluate the influence of artificial lighting in the nursery,
on performance and sanitary conditions of piglets and characterize the environmental
conditions inside the rooms of the programs of artificial lighting. The experiment was held at
the National Center for research on pigs and poultries (CNPSA-EMBRAPA), the system of
pig production in the city of Concordia, west of the state of Santa Catarina. The experiment
was conducted in two periods, from June, 19 to July, 24 of 2008 and June, 10 to July, 15 of
2009, with typical winter weather. Six animals were allocated in each stall and used six stalls
(blocks) in central room. The animals resulted from a cross between females (Landrace x
Large White) and males (MS 115), weaned at 28.3 ? 2.1 days of age and weight of 9 ? 1.2 kg,
according to the management of the poultry farm. The treatments were associated with the
lighting of the room, being assigned to each one a different treatment: LN Program - natural
lighting (control); Program 16L: 8E - Artificial lighting with 16 hours of light and 8 hours of
dark (16L: 8E). Program 23L: 1E - Artificial lighting with 23 hours of light and 8 hours of
dark (23L: 1D). The analyzed variables were: performance (daily weight gain, total weight
gain, daily feed intake, total feed intake, daily water consumption), diarrhea in piglets;
meteorological variables (dry bulb temperature, humidity and speed air) and illuminance. The
experimental planning was in randomized complete blocks with three treatments, two
repetitions and 35 days of measurement and the averages compared by t test. There was no
influence of illumination on the performance variables. The frequency of diarrhea was not
influenced by lighting programs. The differences in meteorological variables did not influence
the performance of pigs. The evaluated lighting programs did
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